From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/arch/arm/mach-lpc32xx/Makefile | 8 + kernel/arch/arm/mach-lpc32xx/Makefile.boot | 3 + kernel/arch/arm/mach-lpc32xx/clock.c | 1287 ++++++++++++++++++++ kernel/arch/arm/mach-lpc32xx/clock.h | 38 + kernel/arch/arm/mach-lpc32xx/common.c | 228 ++++ kernel/arch/arm/mach-lpc32xx/common.h | 66 + kernel/arch/arm/mach-lpc32xx/include/mach/board.h | 24 + .../arm/mach-lpc32xx/include/mach/entry-macro.S | 37 + .../arch/arm/mach-lpc32xx/include/mach/hardware.h | 34 + kernel/arch/arm/mach-lpc32xx/include/mach/irqs.h | 117 ++ .../arch/arm/mach-lpc32xx/include/mach/platform.h | 712 +++++++++++ .../arm/mach-lpc32xx/include/mach/uncompress.h | 59 + kernel/arch/arm/mach-lpc32xx/irq.c | 477 ++++++++ kernel/arch/arm/mach-lpc32xx/phy3250.c | 267 ++++ kernel/arch/arm/mach-lpc32xx/pm.c | 146 +++ kernel/arch/arm/mach-lpc32xx/serial.c | 130 ++ kernel/arch/arm/mach-lpc32xx/suspend.S | 151 +++ kernel/arch/arm/mach-lpc32xx/timer.c | 156 +++ 18 files changed, 3940 insertions(+) create mode 100644 kernel/arch/arm/mach-lpc32xx/Makefile create mode 100644 kernel/arch/arm/mach-lpc32xx/Makefile.boot create mode 100644 kernel/arch/arm/mach-lpc32xx/clock.c create mode 100644 kernel/arch/arm/mach-lpc32xx/clock.h create mode 100644 kernel/arch/arm/mach-lpc32xx/common.c create mode 100644 kernel/arch/arm/mach-lpc32xx/common.h create mode 100644 kernel/arch/arm/mach-lpc32xx/include/mach/board.h create mode 100644 kernel/arch/arm/mach-lpc32xx/include/mach/entry-macro.S create mode 100644 kernel/arch/arm/mach-lpc32xx/include/mach/hardware.h create mode 100644 kernel/arch/arm/mach-lpc32xx/include/mach/irqs.h create mode 100644 kernel/arch/arm/mach-lpc32xx/include/mach/platform.h create mode 100644 kernel/arch/arm/mach-lpc32xx/include/mach/uncompress.h create mode 100644 kernel/arch/arm/mach-lpc32xx/irq.c create mode 100644 kernel/arch/arm/mach-lpc32xx/phy3250.c create mode 100644 kernel/arch/arm/mach-lpc32xx/pm.c create mode 100644 kernel/arch/arm/mach-lpc32xx/serial.c create mode 100644 kernel/arch/arm/mach-lpc32xx/suspend.S create mode 100644 kernel/arch/arm/mach-lpc32xx/timer.c (limited to 'kernel/arch/arm/mach-lpc32xx') diff --git a/kernel/arch/arm/mach-lpc32xx/Makefile b/kernel/arch/arm/mach-lpc32xx/Makefile new file mode 100644 index 000000000..f5db805ab --- /dev/null +++ b/kernel/arch/arm/mach-lpc32xx/Makefile @@ -0,0 +1,8 @@ +# +# Makefile for the linux kernel. +# + +obj-y := timer.o irq.o common.o serial.o clock.o +obj-y += pm.o suspend.o +obj-y += phy3250.o + diff --git a/kernel/arch/arm/mach-lpc32xx/Makefile.boot b/kernel/arch/arm/mach-lpc32xx/Makefile.boot new file mode 100644 index 000000000..d7392a475 --- /dev/null +++ b/kernel/arch/arm/mach-lpc32xx/Makefile.boot @@ -0,0 +1,3 @@ + zreladdr-y += 0x80008000 +params_phys-y := 0x80000100 +initrd_phys-y := 0x82000000 diff --git a/kernel/arch/arm/mach-lpc32xx/clock.c b/kernel/arch/arm/mach-lpc32xx/clock.c new file mode 100644 index 000000000..dd5d6f532 --- /dev/null +++ b/kernel/arch/arm/mach-lpc32xx/clock.c @@ -0,0 +1,1287 @@ +/* + * arch/arm/mach-lpc32xx/clock.c + * + * Author: Kevin Wells + * + * Copyright (C) 2010 NXP Semiconductors + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +/* + * LPC32xx clock management driver overview + * + * The LPC32XX contains a number of high level system clocks that can be + * generated from different sources. These system clocks are used to + * generate the CPU and bus rates and the individual peripheral clocks in + * the system. When Linux is started by the boot loader, the system + * clocks are already running. Stopping a system clock during normal + * Linux operation should never be attempted, as peripherals that require + * those clocks will quit working (ie, DRAM). + * + * The LPC32xx high level clock tree looks as follows. Clocks marked with + * an asterisk are always on and cannot be disabled. Clocks marked with + * an ampersand can only be disabled in CPU suspend mode. Clocks marked + * with a caret are always on if it is the selected clock for the SYSCLK + * source. The clock that isn't used for SYSCLK can be enabled and + * disabled normally. + * 32KHz oscillator* + * / | \ + * RTC* PLL397^ TOUCH + * / + * Main oscillator^ / + * | \ / + * | SYSCLK& + * | \ + * | \ + * USB_PLL HCLK_PLL& + * | | | + * USB host/device PCLK& | + * | | + * Peripherals + * + * The CPU and chip bus rates are derived from the HCLK PLL, which can + * generate various clock rates up to 266MHz and beyond. The internal bus + * rates (PCLK and HCLK) are generated from dividers based on the HCLK + * PLL rate. HCLK can be a ratio of 1:1, 1:2, or 1:4 or HCLK PLL rate, + * while PCLK can be 1:1 to 1:32 of HCLK PLL rate. Most peripherals high + * level clocks are based on either HCLK or PCLK, but have their own + * dividers as part of the IP itself. Because of this, the system clock + * rates should not be changed. + * + * The HCLK PLL is clocked from SYSCLK, which can be derived from the + * main oscillator or PLL397. PLL397 generates a rate that is 397 times + * the 32KHz oscillator rate. The main oscillator runs at the selected + * oscillator/crystal rate on the mosc_in pin of the LPC32xx. This rate + * is normally 13MHz, but depends on the selection of external crystals + * or oscillators. If USB operation is required, the main oscillator must + * be used in the system. + * + * Switching SYSCLK between sources during normal Linux operation is not + * supported. SYSCLK is preset in the bootloader. Because of the + * complexities of clock management during clock frequency changes, + * there are some limitations to the clock driver explained below: + * - The PLL397 and main oscillator can be enabled and disabled by the + * clk_enable() and clk_disable() functions unless SYSCLK is based + * on that clock. This allows the other oscillator that isn't driving + * the HCLK PLL to be used as another system clock that can be routed + * to an external pin. + * - The muxed SYSCLK input and HCLK_PLL rate cannot be changed with + * this driver. + * - HCLK and PCLK rates cannot be changed as part of this driver. + * - Most peripherals have their own dividers are part of the peripheral + * block. Changing SYSCLK, HCLK PLL, HCLK, or PCLK sources or rates + * will also impact the individual peripheral rates. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include "clock.h" +#include "common.h" + +static DEFINE_SPINLOCK(global_clkregs_lock); + +static int usb_pll_enable, usb_pll_valid; + +static struct clk clk_armpll; +static struct clk clk_usbpll; + +/* + * Post divider values for PLLs based on selected register value + */ +static const u32 pll_postdivs[4] = {1, 2, 4, 8}; + +static unsigned long local_return_parent_rate(struct clk *clk) +{ + /* + * If a clock has a rate of 0, then it inherits it's parent + * clock rate + */ + while (clk->rate == 0) + clk = clk->parent; + + return clk->rate; +} + +/* 32KHz clock has a fixed rate and is not stoppable */ +static struct clk osc_32KHz = { + .rate = LPC32XX_CLOCK_OSC_FREQ, + .get_rate = local_return_parent_rate, +}; + +static int local_pll397_enable(struct clk *clk, int enable) +{ + u32 reg; + unsigned long timeout = jiffies + msecs_to_jiffies(10); + + reg = __raw_readl(LPC32XX_CLKPWR_PLL397_CTRL); + + if (enable == 0) { + reg |= LPC32XX_CLKPWR_SYSCTRL_PLL397_DIS; + __raw_writel(reg, LPC32XX_CLKPWR_PLL397_CTRL); + } else { + /* Enable PLL397 */ + reg &= ~LPC32XX_CLKPWR_SYSCTRL_PLL397_DIS; + __raw_writel(reg, LPC32XX_CLKPWR_PLL397_CTRL); + + /* Wait for PLL397 lock */ + while (((__raw_readl(LPC32XX_CLKPWR_PLL397_CTRL) & + LPC32XX_CLKPWR_SYSCTRL_PLL397_STS) == 0) && + time_before(jiffies, timeout)) + cpu_relax(); + + if ((__raw_readl(LPC32XX_CLKPWR_PLL397_CTRL) & + LPC32XX_CLKPWR_SYSCTRL_PLL397_STS) == 0) + return -ENODEV; + } + + return 0; +} + +static int local_oscmain_enable(struct clk *clk, int enable) +{ + u32 reg; + unsigned long timeout = jiffies + msecs_to_jiffies(10); + + reg = __raw_readl(LPC32XX_CLKPWR_MAIN_OSC_CTRL); + + if (enable == 0) { + reg |= LPC32XX_CLKPWR_MOSC_DISABLE; + __raw_writel(reg, LPC32XX_CLKPWR_MAIN_OSC_CTRL); + } else { + /* Enable main oscillator */ + reg &= ~LPC32XX_CLKPWR_MOSC_DISABLE; + __raw_writel(reg, LPC32XX_CLKPWR_MAIN_OSC_CTRL); + + /* Wait for main oscillator to start */ + while (((__raw_readl(LPC32XX_CLKPWR_MAIN_OSC_CTRL) & + LPC32XX_CLKPWR_MOSC_DISABLE) != 0) && + time_before(jiffies, timeout)) + cpu_relax(); + + if ((__raw_readl(LPC32XX_CLKPWR_MAIN_OSC_CTRL) & + LPC32XX_CLKPWR_MOSC_DISABLE) != 0) + return -ENODEV; + } + + return 0; +} + +static struct clk osc_pll397 = { + .parent = &osc_32KHz, + .enable = local_pll397_enable, + .rate = LPC32XX_CLOCK_OSC_FREQ * 397, + .get_rate = local_return_parent_rate, +}; + +static struct clk osc_main = { + .enable = local_oscmain_enable, + .rate = LPC32XX_MAIN_OSC_FREQ, + .get_rate = local_return_parent_rate, +}; + +static struct clk clk_sys; + +/* + * Convert a PLL register value to a PLL output frequency + */ +u32 clk_get_pllrate_from_reg(u32 inputclk, u32 regval) +{ + struct clk_pll_setup pllcfg; + + pllcfg.cco_bypass_b15 = 0; + pllcfg.direct_output_b14 = 0; + pllcfg.fdbk_div_ctrl_b13 = 0; + if ((regval & LPC32XX_CLKPWR_HCLKPLL_CCO_BYPASS) != 0) + pllcfg.cco_bypass_b15 = 1; + if ((regval & LPC32XX_CLKPWR_HCLKPLL_POSTDIV_BYPASS) != 0) + pllcfg.direct_output_b14 = 1; + if ((regval & LPC32XX_CLKPWR_HCLKPLL_FDBK_SEL_FCLK) != 0) + pllcfg.fdbk_div_ctrl_b13 = 1; + pllcfg.pll_m = 1 + ((regval >> 1) & 0xFF); + pllcfg.pll_n = 1 + ((regval >> 9) & 0x3); + pllcfg.pll_p = pll_postdivs[((regval >> 11) & 0x3)]; + + return clk_check_pll_setup(inputclk, &pllcfg); +} + +/* + * Setup the HCLK PLL with a PLL structure + */ +static u32 local_clk_pll_setup(struct clk_pll_setup *PllSetup) +{ + u32 tv, tmp = 0; + + if (PllSetup->analog_on != 0) + tmp |= LPC32XX_CLKPWR_HCLKPLL_POWER_UP; + if (PllSetup->cco_bypass_b15 != 0) + tmp |= LPC32XX_CLKPWR_HCLKPLL_CCO_BYPASS; + if (PllSetup->direct_output_b14 != 0) + tmp |= LPC32XX_CLKPWR_HCLKPLL_POSTDIV_BYPASS; + if (PllSetup->fdbk_div_ctrl_b13 != 0) + tmp |= LPC32XX_CLKPWR_HCLKPLL_FDBK_SEL_FCLK; + + tv = ffs(PllSetup->pll_p) - 1; + if ((!is_power_of_2(PllSetup->pll_p)) || (tv > 3)) + return 0; + + tmp |= LPC32XX_CLKPWR_HCLKPLL_POSTDIV_2POW(tv); + tmp |= LPC32XX_CLKPWR_HCLKPLL_PREDIV_PLUS1(PllSetup->pll_n - 1); + tmp |= LPC32XX_CLKPWR_HCLKPLL_PLLM(PllSetup->pll_m - 1); + + return tmp; +} + +/* + * Update the ARM core PLL frequency rate variable from the actual PLL setting + */ +static void local_update_armpll_rate(void) +{ + u32 clkin, pllreg; + + clkin = clk_armpll.parent->rate; + pllreg = __raw_readl(LPC32XX_CLKPWR_HCLKPLL_CTRL) & 0x1FFFF; + + clk_armpll.rate = clk_get_pllrate_from_reg(clkin, pllreg); +} + +/* + * Find a PLL configuration for the selected input frequency + */ +static u32 local_clk_find_pll_cfg(u32 pllin_freq, u32 target_freq, + struct clk_pll_setup *pllsetup) +{ + u32 ifreq, freqtol, m, n, p, fclkout; + + /* Determine frequency tolerance limits */ + freqtol = target_freq / 250; + ifreq = pllin_freq; + + /* Is direct bypass mode possible? */ + if (abs(pllin_freq - target_freq) <= freqtol) { + pllsetup->analog_on = 0; + pllsetup->cco_bypass_b15 = 1; + pllsetup->direct_output_b14 = 1; + pllsetup->fdbk_div_ctrl_b13 = 1; + pllsetup->pll_p = pll_postdivs[0]; + pllsetup->pll_n = 1; + pllsetup->pll_m = 1; + return clk_check_pll_setup(ifreq, pllsetup); + } else if (target_freq <= ifreq) { + pllsetup->analog_on = 0; + pllsetup->cco_bypass_b15 = 1; + pllsetup->direct_output_b14 = 0; + pllsetup->fdbk_div_ctrl_b13 = 1; + pllsetup->pll_n = 1; + pllsetup->pll_m = 1; + for (p = 0; p <= 3; p++) { + pllsetup->pll_p = pll_postdivs[p]; + fclkout = clk_check_pll_setup(ifreq, pllsetup); + if (abs(target_freq - fclkout) <= freqtol) + return fclkout; + } + } + + /* Is direct mode possible? */ + pllsetup->analog_on = 1; + pllsetup->cco_bypass_b15 = 0; + pllsetup->direct_output_b14 = 1; + pllsetup->fdbk_div_ctrl_b13 = 0; + pllsetup->pll_p = pll_postdivs[0]; + for (m = 1; m <= 256; m++) { + for (n = 1; n <= 4; n++) { + /* Compute output frequency for this value */ + pllsetup->pll_n = n; + pllsetup->pll_m = m; + fclkout = clk_check_pll_setup(ifreq, + pllsetup); + if (abs(target_freq - fclkout) <= + freqtol) + return fclkout; + } + } + + /* Is integer mode possible? */ + pllsetup->analog_on = 1; + pllsetup->cco_bypass_b15 = 0; + pllsetup->direct_output_b14 = 0; + pllsetup->fdbk_div_ctrl_b13 = 1; + for (m = 1; m <= 256; m++) { + for (n = 1; n <= 4; n++) { + for (p = 0; p < 4; p++) { + /* Compute output frequency */ + pllsetup->pll_p = pll_postdivs[p]; + pllsetup->pll_n = n; + pllsetup->pll_m = m; + fclkout = clk_check_pll_setup( + ifreq, pllsetup); + if (abs(target_freq - fclkout) <= freqtol) + return fclkout; + } + } + } + + /* Try non-integer mode */ + pllsetup->analog_on = 1; + pllsetup->cco_bypass_b15 = 0; + pllsetup->direct_output_b14 = 0; + pllsetup->fdbk_div_ctrl_b13 = 0; + for (m = 1; m <= 256; m++) { + for (n = 1; n <= 4; n++) { + for (p = 0; p < 4; p++) { + /* Compute output frequency */ + pllsetup->pll_p = pll_postdivs[p]; + pllsetup->pll_n = n; + pllsetup->pll_m = m; + fclkout = clk_check_pll_setup( + ifreq, pllsetup); + if (abs(target_freq - fclkout) <= freqtol) + return fclkout; + } + } + } + + return 0; +} + +static struct clk clk_armpll = { + .parent = &clk_sys, + .get_rate = local_return_parent_rate, +}; + +/* + * Setup the USB PLL with a PLL structure + */ +static u32 local_clk_usbpll_setup(struct clk_pll_setup *pHCLKPllSetup) +{ + u32 reg, tmp = local_clk_pll_setup(pHCLKPllSetup); + + reg = __raw_readl(LPC32XX_CLKPWR_USB_CTRL) & ~0x1FFFF; + reg |= tmp; + __raw_writel(reg, LPC32XX_CLKPWR_USB_CTRL); + + return clk_check_pll_setup(clk_usbpll.parent->rate, + pHCLKPllSetup); +} + +static int local_usbpll_enable(struct clk *clk, int enable) +{ + u32 reg; + int ret = 0; + unsigned long timeout = jiffies + msecs_to_jiffies(20); + + reg = __raw_readl(LPC32XX_CLKPWR_USB_CTRL); + + __raw_writel(reg & ~(LPC32XX_CLKPWR_USBCTRL_CLK_EN2 | + LPC32XX_CLKPWR_USBCTRL_PLL_PWRUP), + LPC32XX_CLKPWR_USB_CTRL); + __raw_writel(reg & ~LPC32XX_CLKPWR_USBCTRL_CLK_EN1, + LPC32XX_CLKPWR_USB_CTRL); + + if (enable && usb_pll_valid && usb_pll_enable) { + ret = -ENODEV; + /* + * If the PLL rate has been previously set, then the rate + * in the PLL register is valid and can be enabled here. + * Otherwise, it needs to be enabled as part of setrate. + */ + + /* + * Gate clock into PLL + */ + reg |= LPC32XX_CLKPWR_USBCTRL_CLK_EN1; + __raw_writel(reg, LPC32XX_CLKPWR_USB_CTRL); + + /* + * Enable PLL + */ + reg |= LPC32XX_CLKPWR_USBCTRL_PLL_PWRUP; + __raw_writel(reg, LPC32XX_CLKPWR_USB_CTRL); + + /* + * Wait for PLL to lock + */ + while (time_before(jiffies, timeout) && (ret == -ENODEV)) { + reg = __raw_readl(LPC32XX_CLKPWR_USB_CTRL); + if (reg & LPC32XX_CLKPWR_USBCTRL_PLL_STS) + ret = 0; + else + udelay(10); + } + + /* + * Gate clock from PLL if PLL is locked + */ + if (ret == 0) { + __raw_writel(reg | LPC32XX_CLKPWR_USBCTRL_CLK_EN2, + LPC32XX_CLKPWR_USB_CTRL); + } else { + __raw_writel(reg & ~(LPC32XX_CLKPWR_USBCTRL_CLK_EN1 | + LPC32XX_CLKPWR_USBCTRL_PLL_PWRUP), + LPC32XX_CLKPWR_USB_CTRL); + } + } else if ((enable == 0) && usb_pll_valid && usb_pll_enable) { + usb_pll_valid = 0; + usb_pll_enable = 0; + } + + return ret; +} + +static unsigned long local_usbpll_round_rate(struct clk *clk, + unsigned long rate) +{ + u32 clkin, usbdiv; + struct clk_pll_setup pllsetup; + + /* + * Unlike other clocks, this clock has a KHz input rate, so bump + * it up to work with the PLL function + */ + rate = rate * 1000; + + clkin = clk->get_rate(clk); + usbdiv = (__raw_readl(LPC32XX_CLKPWR_USBCLK_PDIV) & + LPC32XX_CLKPWR_USBPDIV_PLL_MASK) + 1; + clkin = clkin / usbdiv; + + /* Try to find a good rate setup */ + if (local_clk_find_pll_cfg(clkin, rate, &pllsetup) == 0) + return 0; + + return clk_check_pll_setup(clkin, &pllsetup); +} + +static int local_usbpll_set_rate(struct clk *clk, unsigned long rate) +{ + int ret = -ENODEV; + u32 clkin, usbdiv; + struct clk_pll_setup pllsetup; + + /* + * Unlike other clocks, this clock has a KHz input rate, so bump + * it up to work with the PLL function + */ + rate = rate * 1000; + + clkin = clk->get_rate(clk->parent); + usbdiv = (__raw_readl(LPC32XX_CLKPWR_USBCLK_PDIV) & + LPC32XX_CLKPWR_USBPDIV_PLL_MASK) + 1; + clkin = clkin / usbdiv; + + /* Try to find a good rate setup */ + if (local_clk_find_pll_cfg(clkin, rate, &pllsetup) == 0) + return -EINVAL; + + /* + * Disable PLL clocks during PLL change + */ + local_usbpll_enable(clk, 0); + pllsetup.analog_on = 0; + local_clk_usbpll_setup(&pllsetup); + + /* + * Start USB PLL and check PLL status + */ + + usb_pll_valid = 1; + usb_pll_enable = 1; + + ret = local_usbpll_enable(clk, 1); + if (ret >= 0) + clk->rate = clk_check_pll_setup(clkin, &pllsetup); + + return ret; +} + +static struct clk clk_usbpll = { + .parent = &osc_main, + .set_rate = local_usbpll_set_rate, + .enable = local_usbpll_enable, + .rate = 48000, /* In KHz */ + .get_rate = local_return_parent_rate, + .round_rate = local_usbpll_round_rate, +}; + +static u32 clk_get_hclk_div(void) +{ + static const u32 hclkdivs[4] = {1, 2, 4, 4}; + return hclkdivs[LPC32XX_CLKPWR_HCLKDIV_DIV_2POW( + __raw_readl(LPC32XX_CLKPWR_HCLK_DIV))]; +} + +static struct clk clk_hclk = { + .parent = &clk_armpll, + .get_rate = local_return_parent_rate, +}; + +static struct clk clk_pclk = { + .parent = &clk_armpll, + .get_rate = local_return_parent_rate, +}; + +static int local_onoff_enable(struct clk *clk, int enable) +{ + u32 tmp; + + tmp = __raw_readl(clk->enable_reg); + + if (enable == 0) + tmp &= ~clk->enable_mask; + else + tmp |= clk->enable_mask; + + __raw_writel(tmp, clk->enable_reg); + + return 0; +} + +/* Peripheral clock sources */ +static struct clk clk_timer0 = { + .parent = &clk_pclk, + .enable = local_onoff_enable, + .enable_reg = LPC32XX_CLKPWR_TIMERS_PWMS_CLK_CTRL_1, + .enable_mask = LPC32XX_CLKPWR_TMRPWMCLK_TIMER0_EN, + .get_rate = local_return_parent_rate, +}; +static struct clk clk_timer1 = { + .parent = &clk_pclk, + .enable = local_onoff_enable, + .enable_reg = LPC32XX_CLKPWR_TIMERS_PWMS_CLK_CTRL_1, + .enable_mask = LPC32XX_CLKPWR_TMRPWMCLK_TIMER1_EN, + .get_rate = local_return_parent_rate, +}; +static struct clk clk_timer2 = { + .parent = &clk_pclk, + .enable = local_onoff_enable, + .enable_reg = LPC32XX_CLKPWR_TIMERS_PWMS_CLK_CTRL_1, + .enable_mask = LPC32XX_CLKPWR_TMRPWMCLK_TIMER2_EN, + .get_rate = local_return_parent_rate, +}; +static struct clk clk_timer3 = { + .parent = &clk_pclk, + .enable = local_onoff_enable, + .enable_reg = LPC32XX_CLKPWR_TIMERS_PWMS_CLK_CTRL_1, + .enable_mask = LPC32XX_CLKPWR_TMRPWMCLK_TIMER3_EN, + .get_rate = local_return_parent_rate, +}; +static struct clk clk_mpwm = { + .parent = &clk_pclk, + .enable = local_onoff_enable, + .enable_reg = LPC32XX_CLKPWR_TIMERS_PWMS_CLK_CTRL_1, + .enable_mask = LPC32XX_CLKPWR_TMRPWMCLK_MPWM_EN, + .get_rate = local_return_parent_rate, +}; +static struct clk clk_wdt = { + .parent = &clk_pclk, + .enable = local_onoff_enable, + .enable_reg = LPC32XX_CLKPWR_TIMER_CLK_CTRL, + .enable_mask = LPC32XX_CLKPWR_PWMCLK_WDOG_EN, + .get_rate = local_return_parent_rate, +}; +static struct clk clk_vfp9 = { + .parent = &clk_pclk, + .enable = local_onoff_enable, + .enable_reg = LPC32XX_CLKPWR_DEBUG_CTRL, + .enable_mask = LPC32XX_CLKPWR_VFP_CLOCK_ENABLE_BIT, + .get_rate = local_return_parent_rate, +}; +static struct clk clk_dma = { + .parent = &clk_hclk, + .enable = local_onoff_enable, + .enable_reg = LPC32XX_CLKPWR_DMA_CLK_CTRL, + .enable_mask = LPC32XX_CLKPWR_DMACLKCTRL_CLK_EN, + .get_rate = local_return_parent_rate, +}; + +static struct clk clk_pwm = { + .parent = &clk_pclk, + .enable = local_onoff_enable, + .enable_reg = LPC32XX_CLKPWR_PWM_CLK_CTRL, + .enable_mask = LPC32XX_CLKPWR_PWMCLK_PWM1CLK_EN | + LPC32XX_CLKPWR_PWMCLK_PWM1SEL_PCLK | + LPC32XX_CLKPWR_PWMCLK_PWM1_DIV(1) | + LPC32XX_CLKPWR_PWMCLK_PWM2CLK_EN | + LPC32XX_CLKPWR_PWMCLK_PWM2SEL_PCLK | + LPC32XX_CLKPWR_PWMCLK_PWM2_DIV(1), + .get_rate = local_return_parent_rate, +}; + +static struct clk clk_uart3 = { + .parent = &clk_pclk, + .enable = local_onoff_enable, + .enable_reg = LPC32XX_CLKPWR_UART_CLK_CTRL, + .enable_mask = LPC32XX_CLKPWR_UARTCLKCTRL_UART3_EN, + .get_rate = local_return_parent_rate, +}; + +static struct clk clk_uart4 = { + .parent = &clk_pclk, + .enable = local_onoff_enable, + .enable_reg = LPC32XX_CLKPWR_UART_CLK_CTRL, + .enable_mask = LPC32XX_CLKPWR_UARTCLKCTRL_UART4_EN, + .get_rate = local_return_parent_rate, +}; + +static struct clk clk_uart5 = { + .parent = &clk_pclk, + .enable = local_onoff_enable, + .enable_reg = LPC32XX_CLKPWR_UART_CLK_CTRL, + .enable_mask = LPC32XX_CLKPWR_UARTCLKCTRL_UART5_EN, + .get_rate = local_return_parent_rate, +}; + +static struct clk clk_uart6 = { + .parent = &clk_pclk, + .enable = local_onoff_enable, + .enable_reg = LPC32XX_CLKPWR_UART_CLK_CTRL, + .enable_mask = LPC32XX_CLKPWR_UARTCLKCTRL_UART6_EN, + .get_rate = local_return_parent_rate, +}; + +static struct clk clk_i2c0 = { + .parent = &clk_hclk, + .enable = local_onoff_enable, + .enable_reg = LPC32XX_CLKPWR_I2C_CLK_CTRL, + .enable_mask = LPC32XX_CLKPWR_I2CCLK_I2C1CLK_EN, + .get_rate = local_return_parent_rate, +}; + +static struct clk clk_i2c1 = { + .parent = &clk_hclk, + .enable = local_onoff_enable, + .enable_reg = LPC32XX_CLKPWR_I2C_CLK_CTRL, + .enable_mask = LPC32XX_CLKPWR_I2CCLK_I2C2CLK_EN, + .get_rate = local_return_parent_rate, +}; + +static struct clk clk_i2c2 = { + .parent = &clk_pclk, + .enable = local_onoff_enable, + .enable_reg = io_p2v(LPC32XX_USB_BASE + 0xFF4), + .enable_mask = 0x4, + .get_rate = local_return_parent_rate, +}; + +static struct clk clk_ssp0 = { + .parent = &clk_hclk, + .enable = local_onoff_enable, + .enable_reg = LPC32XX_CLKPWR_SSP_CLK_CTRL, + .enable_mask = LPC32XX_CLKPWR_SSPCTRL_SSPCLK0_EN, + .get_rate = local_return_parent_rate, +}; + +static struct clk clk_ssp1 = { + .parent = &clk_hclk, + .enable = local_onoff_enable, + .enable_reg = LPC32XX_CLKPWR_SSP_CLK_CTRL, + .enable_mask = LPC32XX_CLKPWR_SSPCTRL_SSPCLK1_EN, + .get_rate = local_return_parent_rate, +}; + +static struct clk clk_kscan = { + .parent = &osc_32KHz, + .enable = local_onoff_enable, + .enable_reg = LPC32XX_CLKPWR_KEY_CLK_CTRL, + .enable_mask = LPC32XX_CLKPWR_KEYCLKCTRL_CLK_EN, + .get_rate = local_return_parent_rate, +}; + +static struct clk clk_nand = { + .parent = &clk_hclk, + .enable = local_onoff_enable, + .enable_reg = LPC32XX_CLKPWR_NAND_CLK_CTRL, + .enable_mask = LPC32XX_CLKPWR_NANDCLK_SLCCLK_EN | + LPC32XX_CLKPWR_NANDCLK_SEL_SLC, + .get_rate = local_return_parent_rate, +}; + +static struct clk clk_nand_mlc = { + .parent = &clk_hclk, + .enable = local_onoff_enable, + .enable_reg = LPC32XX_CLKPWR_NAND_CLK_CTRL, + .enable_mask = LPC32XX_CLKPWR_NANDCLK_MLCCLK_EN | + LPC32XX_CLKPWR_NANDCLK_DMA_INT | + LPC32XX_CLKPWR_NANDCLK_INTSEL_MLC, + .get_rate = local_return_parent_rate, +}; + +static struct clk clk_i2s0 = { + .parent = &clk_hclk, + .enable = local_onoff_enable, + .enable_reg = LPC32XX_CLKPWR_I2S_CLK_CTRL, + .enable_mask = LPC32XX_CLKPWR_I2SCTRL_I2SCLK0_EN, + .get_rate = local_return_parent_rate, +}; + +static struct clk clk_i2s1 = { + .parent = &clk_hclk, + .enable = local_onoff_enable, + .enable_reg = LPC32XX_CLKPWR_I2S_CLK_CTRL, + .enable_mask = LPC32XX_CLKPWR_I2SCTRL_I2SCLK1_EN | + LPC32XX_CLKPWR_I2SCTRL_I2S1_USE_DMA, + .get_rate = local_return_parent_rate, +}; + +static struct clk clk_net = { + .parent = &clk_hclk, + .enable = local_onoff_enable, + .enable_reg = LPC32XX_CLKPWR_MACCLK_CTRL, + .enable_mask = (LPC32XX_CLKPWR_MACCTRL_DMACLK_EN | + LPC32XX_CLKPWR_MACCTRL_MMIOCLK_EN | + LPC32XX_CLKPWR_MACCTRL_HRCCLK_EN), + .get_rate = local_return_parent_rate, +}; + +static struct clk clk_rtc = { + .parent = &osc_32KHz, + .rate = 1, /* 1 Hz */ + .get_rate = local_return_parent_rate, +}; + +static int local_usb_enable(struct clk *clk, int enable) +{ + u32 tmp; + + if (enable) { + /* Set up I2C pull levels */ + tmp = __raw_readl(LPC32XX_CLKPWR_I2C_CLK_CTRL); + tmp |= LPC32XX_CLKPWR_I2CCLK_USBI2CHI_DRIVE; + __raw_writel(tmp, LPC32XX_CLKPWR_I2C_CLK_CTRL); + } + + return local_onoff_enable(clk, enable); +} + +static struct clk clk_usbd = { + .parent = &clk_usbpll, + .enable = local_usb_enable, + .enable_reg = LPC32XX_CLKPWR_USB_CTRL, + .enable_mask = LPC32XX_CLKPWR_USBCTRL_HCLK_EN, + .get_rate = local_return_parent_rate, +}; + +#define OTG_ALWAYS_MASK (LPC32XX_USB_OTG_OTG_CLOCK_ON | \ + LPC32XX_USB_OTG_I2C_CLOCK_ON) + +static int local_usb_otg_enable(struct clk *clk, int enable) +{ + int to = 1000; + + if (enable) { + __raw_writel(clk->enable_mask, clk->enable_reg); + + while (((__raw_readl(LPC32XX_USB_OTG_CLK_STAT) & + clk->enable_mask) != clk->enable_mask) && (to > 0)) + to--; + } else { + __raw_writel(OTG_ALWAYS_MASK, clk->enable_reg); + + while (((__raw_readl(LPC32XX_USB_OTG_CLK_STAT) & + OTG_ALWAYS_MASK) != OTG_ALWAYS_MASK) && (to > 0)) + to--; + } + + if (to) + return 0; + else + return -1; +} + +static struct clk clk_usb_otg_dev = { + .parent = &clk_usbpll, + .enable = local_usb_otg_enable, + .enable_reg = LPC32XX_USB_OTG_CLK_CTRL, + .enable_mask = LPC32XX_USB_OTG_AHB_M_CLOCK_ON | + LPC32XX_USB_OTG_OTG_CLOCK_ON | + LPC32XX_USB_OTG_DEV_CLOCK_ON | + LPC32XX_USB_OTG_I2C_CLOCK_ON, + .get_rate = local_return_parent_rate, +}; + +static struct clk clk_usb_otg_host = { + .parent = &clk_usbpll, + .enable = local_usb_otg_enable, + .enable_reg = LPC32XX_USB_OTG_CLK_CTRL, + .enable_mask = LPC32XX_USB_OTG_AHB_M_CLOCK_ON | + LPC32XX_USB_OTG_OTG_CLOCK_ON | + LPC32XX_USB_OTG_HOST_CLOCK_ON | + LPC32XX_USB_OTG_I2C_CLOCK_ON, + .get_rate = local_return_parent_rate, +}; + +static int tsc_onoff_enable(struct clk *clk, int enable) +{ + u32 tmp; + + /* Make sure 32KHz clock is the selected clock */ + tmp = __raw_readl(LPC32XX_CLKPWR_ADC_CLK_CTRL_1); + tmp &= ~LPC32XX_CLKPWR_ADCCTRL1_PCLK_SEL; + __raw_writel(tmp, LPC32XX_CLKPWR_ADC_CLK_CTRL_1); + + if (enable == 0) + __raw_writel(0, clk->enable_reg); + else + __raw_writel(clk->enable_mask, clk->enable_reg); + + return 0; +} + +static struct clk clk_tsc = { + .parent = &osc_32KHz, + .enable = tsc_onoff_enable, + .enable_reg = LPC32XX_CLKPWR_ADC_CLK_CTRL, + .enable_mask = LPC32XX_CLKPWR_ADC32CLKCTRL_CLK_EN, + .get_rate = local_return_parent_rate, +}; + +static int adc_onoff_enable(struct clk *clk, int enable) +{ + u32 tmp; + u32 divider; + + /* Use PERIPH_CLOCK */ + tmp = __raw_readl(LPC32XX_CLKPWR_ADC_CLK_CTRL_1); + tmp |= LPC32XX_CLKPWR_ADCCTRL1_PCLK_SEL; + /* + * Set clock divider so that we have equal to or less than + * 4.5MHz clock at ADC + */ + divider = clk->get_rate(clk) / 4500000 + 1; + tmp |= divider; + __raw_writel(tmp, LPC32XX_CLKPWR_ADC_CLK_CTRL_1); + + /* synchronize rate of this clock w/ actual HW setting */ + clk->rate = clk->get_rate(clk->parent) / divider; + + if (enable == 0) + __raw_writel(0, clk->enable_reg); + else + __raw_writel(clk->enable_mask, clk->enable_reg); + + return 0; +} + +static struct clk clk_adc = { + .parent = &clk_pclk, + .enable = adc_onoff_enable, + .enable_reg = LPC32XX_CLKPWR_ADC_CLK_CTRL, + .enable_mask = LPC32XX_CLKPWR_ADC32CLKCTRL_CLK_EN, + .get_rate = local_return_parent_rate, +}; + +static int mmc_onoff_enable(struct clk *clk, int enable) +{ + u32 tmp; + + tmp = __raw_readl(LPC32XX_CLKPWR_MS_CTRL) & + ~(LPC32XX_CLKPWR_MSCARD_SDCARD_EN | + LPC32XX_CLKPWR_MSCARD_MSDIO_PU_EN | + LPC32XX_CLKPWR_MSCARD_MSDIO_PIN_DIS | + LPC32XX_CLKPWR_MSCARD_MSDIO0_DIS | + LPC32XX_CLKPWR_MSCARD_MSDIO1_DIS | + LPC32XX_CLKPWR_MSCARD_MSDIO23_DIS); + + /* If rate is 0, disable clock */ + if (enable != 0) + tmp |= LPC32XX_CLKPWR_MSCARD_SDCARD_EN | + LPC32XX_CLKPWR_MSCARD_MSDIO_PU_EN; + + __raw_writel(tmp, LPC32XX_CLKPWR_MS_CTRL); + + return 0; +} + +static unsigned long mmc_get_rate(struct clk *clk) +{ + u32 div, rate, oldclk; + + /* The MMC clock must be on when accessing an MMC register */ + oldclk = __raw_readl(LPC32XX_CLKPWR_MS_CTRL); + __raw_writel(oldclk | LPC32XX_CLKPWR_MSCARD_SDCARD_EN, + LPC32XX_CLKPWR_MS_CTRL); + div = __raw_readl(LPC32XX_CLKPWR_MS_CTRL); + __raw_writel(oldclk, LPC32XX_CLKPWR_MS_CTRL); + + /* Get the parent clock rate */ + rate = clk->parent->get_rate(clk->parent); + + /* Get the MMC controller clock divider value */ + div = div & LPC32XX_CLKPWR_MSCARD_SDCARD_DIV(0xf); + + if (!div) + div = 1; + + return rate / div; +} + +static unsigned long mmc_round_rate(struct clk *clk, unsigned long rate) +{ + unsigned long div, prate; + + /* Get the parent clock rate */ + prate = clk->parent->get_rate(clk->parent); + + if (rate >= prate) + return prate; + + div = prate / rate; + if (div > 0xf) + div = 0xf; + + return prate / div; +} + +static int mmc_set_rate(struct clk *clk, unsigned long rate) +{ + u32 tmp; + unsigned long prate, div, crate = mmc_round_rate(clk, rate); + + prate = clk->parent->get_rate(clk->parent); + + div = prate / crate; + + /* The MMC clock must be on when accessing an MMC register */ + tmp = __raw_readl(LPC32XX_CLKPWR_MS_CTRL) & + ~LPC32XX_CLKPWR_MSCARD_SDCARD_DIV(0xf); + tmp |= LPC32XX_CLKPWR_MSCARD_SDCARD_DIV(div) | + LPC32XX_CLKPWR_MSCARD_SDCARD_EN; + __raw_writel(tmp, LPC32XX_CLKPWR_MS_CTRL); + + return 0; +} + +static struct clk clk_mmc = { + .parent = &clk_armpll, + .set_rate = mmc_set_rate, + .get_rate = mmc_get_rate, + .round_rate = mmc_round_rate, + .enable = mmc_onoff_enable, + .enable_reg = LPC32XX_CLKPWR_MS_CTRL, + .enable_mask = LPC32XX_CLKPWR_MSCARD_SDCARD_EN, +}; + +static unsigned long clcd_get_rate(struct clk *clk) +{ + u32 tmp, div, rate, oldclk; + + /* The LCD clock must be on when accessing an LCD register */ + oldclk = __raw_readl(LPC32XX_CLKPWR_LCDCLK_CTRL); + __raw_writel(oldclk | LPC32XX_CLKPWR_LCDCTRL_CLK_EN, + LPC32XX_CLKPWR_LCDCLK_CTRL); + tmp = __raw_readl(io_p2v(LPC32XX_LCD_BASE + CLCD_TIM2)); + __raw_writel(oldclk, LPC32XX_CLKPWR_LCDCLK_CTRL); + + rate = clk->parent->get_rate(clk->parent); + + /* Only supports internal clocking */ + if (tmp & TIM2_BCD) + return rate; + + div = (tmp & 0x1F) | ((tmp & 0xF8) >> 22); + tmp = rate / (2 + div); + + return tmp; +} + +static int clcd_set_rate(struct clk *clk, unsigned long rate) +{ + u32 tmp, prate, div, oldclk; + + /* The LCD clock must be on when accessing an LCD register */ + oldclk = __raw_readl(LPC32XX_CLKPWR_LCDCLK_CTRL); + __raw_writel(oldclk | LPC32XX_CLKPWR_LCDCTRL_CLK_EN, + LPC32XX_CLKPWR_LCDCLK_CTRL); + + tmp = __raw_readl(io_p2v(LPC32XX_LCD_BASE + CLCD_TIM2)) | TIM2_BCD; + prate = clk->parent->get_rate(clk->parent); + + if (rate < prate) { + /* Find closest divider */ + div = prate / rate; + if (div >= 2) { + div -= 2; + tmp &= ~TIM2_BCD; + } + + tmp &= ~(0xF800001F); + tmp |= (div & 0x1F); + tmp |= (((div >> 5) & 0x1F) << 27); + } + + __raw_writel(tmp, io_p2v(LPC32XX_LCD_BASE + CLCD_TIM2)); + __raw_writel(oldclk, LPC32XX_CLKPWR_LCDCLK_CTRL); + + return 0; +} + +static unsigned long clcd_round_rate(struct clk *clk, unsigned long rate) +{ + u32 prate, div; + + prate = clk->parent->get_rate(clk->parent); + + if (rate >= prate) + rate = prate; + else { + div = prate / rate; + if (div > 0x3ff) + div = 0x3ff; + + rate = prate / div; + } + + return rate; +} + +static struct clk clk_lcd = { + .parent = &clk_hclk, + .set_rate = clcd_set_rate, + .get_rate = clcd_get_rate, + .round_rate = clcd_round_rate, + .enable = local_onoff_enable, + .enable_reg = LPC32XX_CLKPWR_LCDCLK_CTRL, + .enable_mask = LPC32XX_CLKPWR_LCDCTRL_CLK_EN, +}; + +static void local_clk_disable(struct clk *clk) +{ + /* Don't attempt to disable clock if it has no users */ + if (clk->usecount > 0) { + clk->usecount--; + + /* Only disable clock when it has no more users */ + if ((clk->usecount == 0) && (clk->enable)) + clk->enable(clk, 0); + + /* Check parent clocks, they may need to be disabled too */ + if (clk->parent) + local_clk_disable(clk->parent); + } +} + +static int local_clk_enable(struct clk *clk) +{ + int ret = 0; + + /* Enable parent clocks first and update use counts */ + if (clk->parent) + ret = local_clk_enable(clk->parent); + + if (!ret) { + /* Only enable clock if it's currently disabled */ + if ((clk->usecount == 0) && (clk->enable)) + ret = clk->enable(clk, 1); + + if (!ret) + clk->usecount++; + else if (clk->parent) + local_clk_disable(clk->parent); + } + + return ret; +} + +/* + * clk_enable - inform the system when the clock source should be running. + */ +int clk_enable(struct clk *clk) +{ + int ret; + unsigned long flags; + + spin_lock_irqsave(&global_clkregs_lock, flags); + ret = local_clk_enable(clk); + spin_unlock_irqrestore(&global_clkregs_lock, flags); + + return ret; +} +EXPORT_SYMBOL(clk_enable); + +/* + * clk_disable - inform the system when the clock source is no longer required + */ +void clk_disable(struct clk *clk) +{ + unsigned long flags; + + spin_lock_irqsave(&global_clkregs_lock, flags); + local_clk_disable(clk); + spin_unlock_irqrestore(&global_clkregs_lock, flags); +} +EXPORT_SYMBOL(clk_disable); + +/* + * clk_get_rate - obtain the current clock rate (in Hz) for a clock source + */ +unsigned long clk_get_rate(struct clk *clk) +{ + return clk->get_rate(clk); +} +EXPORT_SYMBOL(clk_get_rate); + +/* + * clk_set_rate - set the clock rate for a clock source + */ +int clk_set_rate(struct clk *clk, unsigned long rate) +{ + int ret = -EINVAL; + + /* + * Most system clocks can only be enabled or disabled, with + * the actual rate set as part of the peripheral dividers + * instead of high level clock control + */ + if (clk->set_rate) + ret = clk->set_rate(clk, rate); + + return ret; +} +EXPORT_SYMBOL(clk_set_rate); + +/* + * clk_round_rate - adjust a rate to the exact rate a clock can provide + */ +long clk_round_rate(struct clk *clk, unsigned long rate) +{ + if (clk->round_rate) + rate = clk->round_rate(clk, rate); + else + rate = clk->get_rate(clk); + + return rate; +} +EXPORT_SYMBOL(clk_round_rate); + +/* + * clk_set_parent - set the parent clock source for this clock + */ +int clk_set_parent(struct clk *clk, struct clk *parent) +{ + /* Clock re-parenting is not supported */ + return -EINVAL; +} +EXPORT_SYMBOL(clk_set_parent); + +/* + * clk_get_parent - get the parent clock source for this clock + */ +struct clk *clk_get_parent(struct clk *clk) +{ + return clk->parent; +} +EXPORT_SYMBOL(clk_get_parent); + +static struct clk_lookup lookups[] = { + CLKDEV_INIT(NULL, "osc_32KHz", &osc_32KHz), + CLKDEV_INIT(NULL, "osc_pll397", &osc_pll397), + CLKDEV_INIT(NULL, "osc_main", &osc_main), + CLKDEV_INIT(NULL, "sys_ck", &clk_sys), + CLKDEV_INIT(NULL, "arm_pll_ck", &clk_armpll), + CLKDEV_INIT(NULL, "ck_pll5", &clk_usbpll), + CLKDEV_INIT(NULL, "hclk_ck", &clk_hclk), + CLKDEV_INIT(NULL, "pclk_ck", &clk_pclk), + CLKDEV_INIT(NULL, "timer0_ck", &clk_timer0), + CLKDEV_INIT(NULL, "timer1_ck", &clk_timer1), + CLKDEV_INIT(NULL, "timer2_ck", &clk_timer2), + CLKDEV_INIT(NULL, "timer3_ck", &clk_timer3), + CLKDEV_INIT(NULL, "vfp9_ck", &clk_vfp9), + CLKDEV_INIT("pl08xdmac", NULL, &clk_dma), + CLKDEV_INIT("4003c000.watchdog", NULL, &clk_wdt), + CLKDEV_INIT("4005c000.pwm", NULL, &clk_pwm), + CLKDEV_INIT("400e8000.mpwm", NULL, &clk_mpwm), + CLKDEV_INIT(NULL, "uart3_ck", &clk_uart3), + CLKDEV_INIT(NULL, "uart4_ck", &clk_uart4), + CLKDEV_INIT(NULL, "uart5_ck", &clk_uart5), + CLKDEV_INIT(NULL, "uart6_ck", &clk_uart6), + CLKDEV_INIT("400a0000.i2c", NULL, &clk_i2c0), + CLKDEV_INIT("400a8000.i2c", NULL, &clk_i2c1), + CLKDEV_INIT("31020300.i2c", NULL, &clk_i2c2), + CLKDEV_INIT("dev:ssp0", NULL, &clk_ssp0), + CLKDEV_INIT("dev:ssp1", NULL, &clk_ssp1), + CLKDEV_INIT("40050000.key", NULL, &clk_kscan), + CLKDEV_INIT("20020000.flash", NULL, &clk_nand), + CLKDEV_INIT("200a8000.flash", NULL, &clk_nand_mlc), + CLKDEV_INIT("40048000.adc", NULL, &clk_adc), + CLKDEV_INIT(NULL, "i2s0_ck", &clk_i2s0), + CLKDEV_INIT(NULL, "i2s1_ck", &clk_i2s1), + CLKDEV_INIT("40048000.tsc", NULL, &clk_tsc), + CLKDEV_INIT("20098000.sd", NULL, &clk_mmc), + CLKDEV_INIT("31060000.ethernet", NULL, &clk_net), + CLKDEV_INIT("dev:clcd", NULL, &clk_lcd), + CLKDEV_INIT("31020000.usbd", "ck_usbd", &clk_usbd), + CLKDEV_INIT("31020000.ohci", "ck_usbd", &clk_usbd), + CLKDEV_INIT("31020000.usbd", "ck_usb_otg", &clk_usb_otg_dev), + CLKDEV_INIT("31020000.ohci", "ck_usb_otg", &clk_usb_otg_host), + CLKDEV_INIT("lpc32xx_rtc", NULL, &clk_rtc), +}; + +static int __init clk_init(void) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(lookups); i++) + clkdev_add(&lookups[i]); + + /* + * Setup muxed SYSCLK for HCLK PLL base -this selects the + * parent clock used for the ARM PLL and is used to derive + * the many system clock rates in the device. + */ + if (clk_is_sysclk_mainosc() != 0) + clk_sys.parent = &osc_main; + else + clk_sys.parent = &osc_pll397; + + clk_sys.rate = clk_sys.parent->rate; + + /* Compute the current ARM PLL and USB PLL frequencies */ + local_update_armpll_rate(); + + /* Compute HCLK and PCLK bus rates */ + clk_hclk.rate = clk_hclk.parent->rate / clk_get_hclk_div(); + clk_pclk.rate = clk_pclk.parent->rate / clk_get_pclk_div(); + + /* + * Enable system clocks - this step is somewhat formal, as the + * clocks are already running, but it does get the clock data + * inline with the actual system state. Never disable these + * clocks as they will only stop if the system is going to sleep. + * In that case, the chip/system power management functions will + * handle clock gating. + */ + if (clk_enable(&clk_hclk) || clk_enable(&clk_pclk)) + printk(KERN_ERR "Error enabling system HCLK and PCLK\n"); + + /* + * Timers 0 and 1 were enabled and are being used by the high + * resolution tick function prior to this driver being initialized. + * Tag them now as used. + */ + if (clk_enable(&clk_timer0) || clk_enable(&clk_timer1)) + printk(KERN_ERR "Error enabling timer tick clocks\n"); + + return 0; +} +core_initcall(clk_init); + diff --git a/kernel/arch/arm/mach-lpc32xx/clock.h b/kernel/arch/arm/mach-lpc32xx/clock.h new file mode 100644 index 000000000..c0a843430 --- /dev/null +++ b/kernel/arch/arm/mach-lpc32xx/clock.h @@ -0,0 +1,38 @@ +/* + * arch/arm/mach-lpc32xx/clock.h + * + * Author: Kevin Wells + * + * Copyright (C) 2010 NXP Semiconductors + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __LPC32XX_CLOCK_H +#define __LPC32XX_CLOCK_H + +struct clk { + struct list_head node; + struct clk *parent; + u32 rate; + u32 usecount; + + int (*set_rate) (struct clk *, unsigned long); + unsigned long (*round_rate) (struct clk *, unsigned long); + unsigned long (*get_rate) (struct clk *clk); + int (*enable) (struct clk *, int); + + /* Register address and bit mask for simple clocks */ + void __iomem *enable_reg; + u32 enable_mask; +}; + +#endif diff --git a/kernel/arch/arm/mach-lpc32xx/common.c b/kernel/arch/arm/mach-lpc32xx/common.c new file mode 100644 index 000000000..716e83eb1 --- /dev/null +++ b/kernel/arch/arm/mach-lpc32xx/common.c @@ -0,0 +1,228 @@ +/* + * arch/arm/mach-lpc32xx/common.c + * + * Author: Kevin Wells + * + * Copyright (C) 2010 NXP Semiconductors + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include +#include +#include "common.h" + +/* + * Returns the unique ID for the device + */ +void lpc32xx_get_uid(u32 devid[4]) +{ + int i; + + for (i = 0; i < 4; i++) + devid[i] = __raw_readl(LPC32XX_CLKPWR_DEVID(i << 2)); +} + +/* + * Returns SYSCLK source + * 0 = PLL397, 1 = main oscillator + */ +int clk_is_sysclk_mainosc(void) +{ + if ((__raw_readl(LPC32XX_CLKPWR_SYSCLK_CTRL) & + LPC32XX_CLKPWR_SYSCTRL_SYSCLKMUX) == 0) + return 1; + + return 0; +} + +/* + * Detects and returns IRAM size for the device variation + */ +#define LPC32XX_IRAM_BANK_SIZE SZ_128K +static u32 iram_size; +u32 lpc32xx_return_iram_size(void) +{ + if (iram_size == 0) { + u32 savedval1, savedval2; + void __iomem *iramptr1, *iramptr2; + + iramptr1 = io_p2v(LPC32XX_IRAM_BASE); + iramptr2 = io_p2v(LPC32XX_IRAM_BASE + LPC32XX_IRAM_BANK_SIZE); + savedval1 = __raw_readl(iramptr1); + savedval2 = __raw_readl(iramptr2); + + if (savedval1 == savedval2) { + __raw_writel(savedval2 + 1, iramptr2); + if (__raw_readl(iramptr1) == savedval2 + 1) + iram_size = LPC32XX_IRAM_BANK_SIZE; + else + iram_size = LPC32XX_IRAM_BANK_SIZE * 2; + __raw_writel(savedval2, iramptr2); + } else + iram_size = LPC32XX_IRAM_BANK_SIZE * 2; + } + + return iram_size; +} +EXPORT_SYMBOL_GPL(lpc32xx_return_iram_size); + +/* + * Computes PLL rate from PLL register and input clock + */ +u32 clk_check_pll_setup(u32 ifreq, struct clk_pll_setup *pllsetup) +{ + u32 ilfreq, p, m, n, fcco, fref, cfreq; + int mode; + + /* + * PLL requirements + * ifreq must be >= 1MHz and <= 20MHz + * FCCO must be >= 156MHz and <= 320MHz + * FREF must be >= 1MHz and <= 27MHz + * Assume the passed input data is not valid + */ + + ilfreq = ifreq; + m = pllsetup->pll_m; + n = pllsetup->pll_n; + p = pllsetup->pll_p; + + mode = (pllsetup->cco_bypass_b15 << 2) | + (pllsetup->direct_output_b14 << 1) | + pllsetup->fdbk_div_ctrl_b13; + + switch (mode) { + case 0x0: /* Non-integer mode */ + cfreq = (m * ilfreq) / (2 * p * n); + fcco = (m * ilfreq) / n; + fref = ilfreq / n; + break; + + case 0x1: /* integer mode */ + cfreq = (m * ilfreq) / n; + fcco = (m * ilfreq) / (n * 2 * p); + fref = ilfreq / n; + break; + + case 0x2: + case 0x3: /* Direct mode */ + cfreq = (m * ilfreq) / n; + fcco = cfreq; + fref = ilfreq / n; + break; + + case 0x4: + case 0x5: /* Bypass mode */ + cfreq = ilfreq / (2 * p); + fcco = 156000000; + fref = 1000000; + break; + + case 0x6: + case 0x7: /* Direct bypass mode */ + default: + cfreq = ilfreq; + fcco = 156000000; + fref = 1000000; + break; + } + + if (fcco < 156000000 || fcco > 320000000) + cfreq = 0; + + if (fref < 1000000 || fref > 27000000) + cfreq = 0; + + return (u32) cfreq; +} + +u32 clk_get_pclk_div(void) +{ + return 1 + ((__raw_readl(LPC32XX_CLKPWR_HCLK_DIV) >> 2) & 0x1F); +} + +static struct map_desc lpc32xx_io_desc[] __initdata = { + { + .virtual = (unsigned long)IO_ADDRESS(LPC32XX_AHB0_START), + .pfn = __phys_to_pfn(LPC32XX_AHB0_START), + .length = LPC32XX_AHB0_SIZE, + .type = MT_DEVICE + }, + { + .virtual = (unsigned long)IO_ADDRESS(LPC32XX_AHB1_START), + .pfn = __phys_to_pfn(LPC32XX_AHB1_START), + .length = LPC32XX_AHB1_SIZE, + .type = MT_DEVICE + }, + { + .virtual = (unsigned long)IO_ADDRESS(LPC32XX_FABAPB_START), + .pfn = __phys_to_pfn(LPC32XX_FABAPB_START), + .length = LPC32XX_FABAPB_SIZE, + .type = MT_DEVICE + }, + { + .virtual = (unsigned long)IO_ADDRESS(LPC32XX_IRAM_BASE), + .pfn = __phys_to_pfn(LPC32XX_IRAM_BASE), + .length = (LPC32XX_IRAM_BANK_SIZE * 2), + .type = MT_DEVICE + }, +}; + +void __init lpc32xx_map_io(void) +{ + iotable_init(lpc32xx_io_desc, ARRAY_SIZE(lpc32xx_io_desc)); +} + +void lpc23xx_restart(enum reboot_mode mode, const char *cmd) +{ + /* Make sure WDT clocks are enabled */ + __raw_writel(LPC32XX_CLKPWR_PWMCLK_WDOG_EN, + LPC32XX_CLKPWR_TIMER_CLK_CTRL); + + /* Instant assert of RESETOUT_N with pulse length 1mS */ + __raw_writel(13000, io_p2v(LPC32XX_WDTIM_BASE + 0x18)); + __raw_writel(0x70, io_p2v(LPC32XX_WDTIM_BASE + 0xC)); + + /* Wait for watchdog to reset system */ + while (1) + ; +} + +static int __init lpc32xx_check_uid(void) +{ + u32 uid[4]; + + lpc32xx_get_uid(uid); + + printk(KERN_INFO "LPC32XX unique ID: %08x%08x%08x%08x\n", + uid[3], uid[2], uid[1], uid[0]); + + if (!system_serial_low && !system_serial_high) { + system_serial_low = uid[0]; + system_serial_high = uid[1]; + } + + return 1; +} +arch_initcall(lpc32xx_check_uid); diff --git a/kernel/arch/arm/mach-lpc32xx/common.h b/kernel/arch/arm/mach-lpc32xx/common.h new file mode 100644 index 000000000..1cd8853b2 --- /dev/null +++ b/kernel/arch/arm/mach-lpc32xx/common.h @@ -0,0 +1,66 @@ +/* + * arch/arm/mach-lpc32xx/common.h + * + * Author: Kevin Wells + * + * Copyright (C) 2009-2010 NXP Semiconductors + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __LPC32XX_COMMON_H +#define __LPC32XX_COMMON_H + +#include +#include +#include + +/* + * Other arch specific structures and functions + */ +extern void lpc32xx_timer_init(void); +extern void __init lpc32xx_init_irq(void); +extern void __init lpc32xx_map_io(void); +extern void __init lpc32xx_serial_init(void); +extern void lpc23xx_restart(enum reboot_mode, const char *); + + +/* + * Structure used for setting up and querying the PLLS + */ +struct clk_pll_setup { + int analog_on; + int cco_bypass_b15; + int direct_output_b14; + int fdbk_div_ctrl_b13; + int pll_p; + int pll_n; + u32 pll_m; +}; + +extern int clk_is_sysclk_mainosc(void); +extern u32 clk_check_pll_setup(u32 ifreq, struct clk_pll_setup *pllsetup); +extern u32 clk_get_pllrate_from_reg(u32 inputclk, u32 regval); +extern u32 clk_get_pclk_div(void); + +/* + * Returns the LPC32xx unique 128-bit chip ID + */ +extern void lpc32xx_get_uid(u32 devid[4]); + +extern u32 lpc32xx_return_iram_size(void); +/* + * Pointers used for sizing and copying suspend function data + */ +extern int lpc32xx_sys_suspend(void); +extern int lpc32xx_sys_suspend_sz; + +#endif diff --git a/kernel/arch/arm/mach-lpc32xx/include/mach/board.h b/kernel/arch/arm/mach-lpc32xx/include/mach/board.h new file mode 100644 index 000000000..52531ca7b --- /dev/null +++ b/kernel/arch/arm/mach-lpc32xx/include/mach/board.h @@ -0,0 +1,24 @@ +/* + * arm/arch/mach-lpc32xx/include/mach/board.h + * + * Author: Kevin Wells + * + * Copyright (C) 2010 NXP Semiconductors + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __ASM_ARCH_BOARD_H +#define __ASM_ARCH_BOARD_H + +extern u32 lpc32xx_return_iram_size(void); + +#endif /* __ASM_ARCH_BOARD_H */ diff --git a/kernel/arch/arm/mach-lpc32xx/include/mach/entry-macro.S b/kernel/arch/arm/mach-lpc32xx/include/mach/entry-macro.S new file mode 100644 index 000000000..24ca11b37 --- /dev/null +++ b/kernel/arch/arm/mach-lpc32xx/include/mach/entry-macro.S @@ -0,0 +1,37 @@ +/* + * arch/arm/mach-lpc32xx/include/mach/entry-macro.S + * + * Author: Kevin Wells + * + * Copyright (C) 2010 NXP Semiconductors + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include + +#define LPC32XX_INTC_MASKED_STATUS_OFS 0x8 + + .macro get_irqnr_preamble, base, tmp + ldr \base, =IO_ADDRESS(LPC32XX_MIC_BASE) + .endm + +/* + * Return IRQ number in irqnr. Also return processor Z flag status in CPSR + * as set if an interrupt is pending. + */ + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + ldr \irqstat, [\base, #LPC32XX_INTC_MASKED_STATUS_OFS] + clz \irqnr, \irqstat + rsb \irqnr, \irqnr, #31 + teq \irqstat, #0 + .endm diff --git a/kernel/arch/arm/mach-lpc32xx/include/mach/hardware.h b/kernel/arch/arm/mach-lpc32xx/include/mach/hardware.h new file mode 100644 index 000000000..69065de97 --- /dev/null +++ b/kernel/arch/arm/mach-lpc32xx/include/mach/hardware.h @@ -0,0 +1,34 @@ +/* + * arch/arm/mach-lpc32xx/include/mach/hardware.h + * + * Copyright (c) 2005 MontaVista Software, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __ASM_ARCH_HARDWARE_H +#define __ASM_ARCH_HARDWARE_H + +/* + * Start of virtual addresses for IO devices + */ +#define IO_BASE 0xF0000000 + +/* + * This macro relies on fact that for all HW i/o addresses bits 20-23 are 0 + */ +#define IO_ADDRESS(x) IOMEM(((((x) & 0xff000000) >> 4) | ((x) & 0xfffff)) |\ + IO_BASE) + +#define io_p2v(x) ((void __iomem *) (unsigned long) IO_ADDRESS(x)) +#define io_v2p(x) ((((x) & 0x0ff00000) << 4) | ((x) & 0x000fffff)) + +#endif diff --git a/kernel/arch/arm/mach-lpc32xx/include/mach/irqs.h b/kernel/arch/arm/mach-lpc32xx/include/mach/irqs.h new file mode 100644 index 000000000..9e3b90df3 --- /dev/null +++ b/kernel/arch/arm/mach-lpc32xx/include/mach/irqs.h @@ -0,0 +1,117 @@ +/* + * arch/arm/mach-lpc32xx/include/mach/irqs.h + * + * Author: Kevin Wells + * + * Copyright (C) 2010 NXP Semiconductors + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __ASM_ARM_ARCH_IRQS_H +#define __ASM_ARM_ARCH_IRQS_H + +#define LPC32XX_SIC1_IRQ(n) (32 + (n)) +#define LPC32XX_SIC2_IRQ(n) (64 + (n)) + +/* + * MIC interrupts + */ +#define IRQ_LPC32XX_SUB1IRQ 0 +#define IRQ_LPC32XX_SUB2IRQ 1 +#define IRQ_LPC32XX_PWM3 3 +#define IRQ_LPC32XX_PWM4 4 +#define IRQ_LPC32XX_HSTIMER 5 +#define IRQ_LPC32XX_WATCH 6 +#define IRQ_LPC32XX_UART_IIR3 7 +#define IRQ_LPC32XX_UART_IIR4 8 +#define IRQ_LPC32XX_UART_IIR5 9 +#define IRQ_LPC32XX_UART_IIR6 10 +#define IRQ_LPC32XX_FLASH 11 +#define IRQ_LPC32XX_SD1 13 +#define IRQ_LPC32XX_LCD 14 +#define IRQ_LPC32XX_SD0 15 +#define IRQ_LPC32XX_TIMER0 16 +#define IRQ_LPC32XX_TIMER1 17 +#define IRQ_LPC32XX_TIMER2 18 +#define IRQ_LPC32XX_TIMER3 19 +#define IRQ_LPC32XX_SSP0 20 +#define IRQ_LPC32XX_SSP1 21 +#define IRQ_LPC32XX_I2S0 22 +#define IRQ_LPC32XX_I2S1 23 +#define IRQ_LPC32XX_UART_IIR7 24 +#define IRQ_LPC32XX_UART_IIR2 25 +#define IRQ_LPC32XX_UART_IIR1 26 +#define IRQ_LPC32XX_MSTIMER 27 +#define IRQ_LPC32XX_DMA 28 +#define IRQ_LPC32XX_ETHERNET 29 +#define IRQ_LPC32XX_SUB1FIQ 30 +#define IRQ_LPC32XX_SUB2FIQ 31 + +/* + * SIC1 interrupts start at offset 32 + */ +#define IRQ_LPC32XX_JTAG_COMM_TX LPC32XX_SIC1_IRQ(1) +#define IRQ_LPC32XX_JTAG_COMM_RX LPC32XX_SIC1_IRQ(2) +#define IRQ_LPC32XX_GPI_28 LPC32XX_SIC1_IRQ(4) +#define IRQ_LPC32XX_TS_P LPC32XX_SIC1_IRQ(6) +#define IRQ_LPC32XX_TS_IRQ LPC32XX_SIC1_IRQ(7) +#define IRQ_LPC32XX_TS_AUX LPC32XX_SIC1_IRQ(8) +#define IRQ_LPC32XX_SPI2 LPC32XX_SIC1_IRQ(12) +#define IRQ_LPC32XX_PLLUSB LPC32XX_SIC1_IRQ(13) +#define IRQ_LPC32XX_PLLHCLK LPC32XX_SIC1_IRQ(14) +#define IRQ_LPC32XX_PLL397 LPC32XX_SIC1_IRQ(17) +#define IRQ_LPC32XX_I2C_2 LPC32XX_SIC1_IRQ(18) +#define IRQ_LPC32XX_I2C_1 LPC32XX_SIC1_IRQ(19) +#define IRQ_LPC32XX_RTC LPC32XX_SIC1_IRQ(20) +#define IRQ_LPC32XX_KEY LPC32XX_SIC1_IRQ(22) +#define IRQ_LPC32XX_SPI1 LPC32XX_SIC1_IRQ(23) +#define IRQ_LPC32XX_SW LPC32XX_SIC1_IRQ(24) +#define IRQ_LPC32XX_USB_OTG_TIMER LPC32XX_SIC1_IRQ(25) +#define IRQ_LPC32XX_USB_OTG_ATX LPC32XX_SIC1_IRQ(26) +#define IRQ_LPC32XX_USB_HOST LPC32XX_SIC1_IRQ(27) +#define IRQ_LPC32XX_USB_DEV_DMA LPC32XX_SIC1_IRQ(28) +#define IRQ_LPC32XX_USB_DEV_LP LPC32XX_SIC1_IRQ(29) +#define IRQ_LPC32XX_USB_DEV_HP LPC32XX_SIC1_IRQ(30) +#define IRQ_LPC32XX_USB_I2C LPC32XX_SIC1_IRQ(31) + +/* + * SIC2 interrupts start at offset 64 + */ +#define IRQ_LPC32XX_GPIO_00 LPC32XX_SIC2_IRQ(0) +#define IRQ_LPC32XX_GPIO_01 LPC32XX_SIC2_IRQ(1) +#define IRQ_LPC32XX_GPIO_02 LPC32XX_SIC2_IRQ(2) +#define IRQ_LPC32XX_GPIO_03 LPC32XX_SIC2_IRQ(3) +#define IRQ_LPC32XX_GPIO_04 LPC32XX_SIC2_IRQ(4) +#define IRQ_LPC32XX_GPIO_05 LPC32XX_SIC2_IRQ(5) +#define IRQ_LPC32XX_SPI2_DATAIN LPC32XX_SIC2_IRQ(6) +#define IRQ_LPC32XX_U2_HCTS LPC32XX_SIC2_IRQ(7) +#define IRQ_LPC32XX_P0_P1_IRQ LPC32XX_SIC2_IRQ(8) +#define IRQ_LPC32XX_GPI_08 LPC32XX_SIC2_IRQ(9) +#define IRQ_LPC32XX_GPI_09 LPC32XX_SIC2_IRQ(10) +#define IRQ_LPC32XX_GPI_19 LPC32XX_SIC2_IRQ(11) +#define IRQ_LPC32XX_U7_HCTS LPC32XX_SIC2_IRQ(12) +#define IRQ_LPC32XX_GPI_07 LPC32XX_SIC2_IRQ(15) +#define IRQ_LPC32XX_SDIO LPC32XX_SIC2_IRQ(18) +#define IRQ_LPC32XX_U5_RX LPC32XX_SIC2_IRQ(19) +#define IRQ_LPC32XX_SPI1_DATAIN LPC32XX_SIC2_IRQ(20) +#define IRQ_LPC32XX_GPI_00 LPC32XX_SIC2_IRQ(22) +#define IRQ_LPC32XX_GPI_01 LPC32XX_SIC2_IRQ(23) +#define IRQ_LPC32XX_GPI_02 LPC32XX_SIC2_IRQ(24) +#define IRQ_LPC32XX_GPI_03 LPC32XX_SIC2_IRQ(25) +#define IRQ_LPC32XX_GPI_04 LPC32XX_SIC2_IRQ(26) +#define IRQ_LPC32XX_GPI_05 LPC32XX_SIC2_IRQ(27) +#define IRQ_LPC32XX_GPI_06 LPC32XX_SIC2_IRQ(28) +#define IRQ_LPC32XX_SYSCLK LPC32XX_SIC2_IRQ(31) + +#define NR_IRQS 96 + +#endif diff --git a/kernel/arch/arm/mach-lpc32xx/include/mach/platform.h b/kernel/arch/arm/mach-lpc32xx/include/mach/platform.h new file mode 100644 index 000000000..b5612a1d1 --- /dev/null +++ b/kernel/arch/arm/mach-lpc32xx/include/mach/platform.h @@ -0,0 +1,712 @@ +/* + * arch/arm/mach-lpc32xx/include/mach/platform.h + * + * Author: Kevin Wells + * + * Copyright (C) 2010 NXP Semiconductors + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __ASM_ARCH_PLATFORM_H +#define __ASM_ARCH_PLATFORM_H + +#define _SBF(f, v) ((v) << (f)) +#define _BIT(n) _SBF(n, 1) + +/* + * AHB 0 physical base addresses + */ +#define LPC32XX_SLC_BASE 0x20020000 +#define LPC32XX_SSP0_BASE 0x20084000 +#define LPC32XX_SPI1_BASE 0x20088000 +#define LPC32XX_SSP1_BASE 0x2008C000 +#define LPC32XX_SPI2_BASE 0x20090000 +#define LPC32XX_I2S0_BASE 0x20094000 +#define LPC32XX_SD_BASE 0x20098000 +#define LPC32XX_I2S1_BASE 0x2009C000 +#define LPC32XX_MLC_BASE 0x200A8000 +#define LPC32XX_AHB0_START LPC32XX_SLC_BASE +#define LPC32XX_AHB0_SIZE 0x00089000 + +/* + * AHB 1 physical base addresses + */ +#define LPC32XX_DMA_BASE 0x31000000 +#define LPC32XX_USB_BASE 0x31020000 +#define LPC32XX_USBH_BASE 0x31020000 +#define LPC32XX_USB_OTG_BASE 0x31020000 +#define LPC32XX_OTG_I2C_BASE 0x31020300 +#define LPC32XX_LCD_BASE 0x31040000 +#define LPC32XX_ETHERNET_BASE 0x31060000 +#define LPC32XX_EMC_BASE 0x31080000 +#define LPC32XX_ETB_CFG_BASE 0x310C0000 +#define LPC32XX_ETB_DATA_BASE 0x310E0000 +#define LPC32XX_AHB1_START LPC32XX_DMA_BASE +#define LPC32XX_AHB1_SIZE 0x000E1000 + +/* + * FAB physical base addresses + */ +#define LPC32XX_CLK_PM_BASE 0x40004000 +#define LPC32XX_MIC_BASE 0x40008000 +#define LPC32XX_SIC1_BASE 0x4000C000 +#define LPC32XX_SIC2_BASE 0x40010000 +#define LPC32XX_HS_UART1_BASE 0x40014000 +#define LPC32XX_HS_UART2_BASE 0x40018000 +#define LPC32XX_HS_UART7_BASE 0x4001C000 +#define LPC32XX_RTC_BASE 0x40024000 +#define LPC32XX_RTC_RAM_BASE 0x40024080 +#define LPC32XX_GPIO_BASE 0x40028000 +#define LPC32XX_PWM3_BASE 0x4002C000 +#define LPC32XX_PWM4_BASE 0x40030000 +#define LPC32XX_MSTIM_BASE 0x40034000 +#define LPC32XX_HSTIM_BASE 0x40038000 +#define LPC32XX_WDTIM_BASE 0x4003C000 +#define LPC32XX_DEBUG_CTRL_BASE 0x40040000 +#define LPC32XX_TIMER0_BASE 0x40044000 +#define LPC32XX_ADC_BASE 0x40048000 +#define LPC32XX_TIMER1_BASE 0x4004C000 +#define LPC32XX_KSCAN_BASE 0x40050000 +#define LPC32XX_UART_CTRL_BASE 0x40054000 +#define LPC32XX_TIMER2_BASE 0x40058000 +#define LPC32XX_PWM1_BASE 0x4005C000 +#define LPC32XX_PWM2_BASE 0x4005C004 +#define LPC32XX_TIMER3_BASE 0x40060000 + +/* + * APB physical base addresses + */ +#define LPC32XX_UART3_BASE 0x40080000 +#define LPC32XX_UART4_BASE 0x40088000 +#define LPC32XX_UART5_BASE 0x40090000 +#define LPC32XX_UART6_BASE 0x40098000 +#define LPC32XX_I2C1_BASE 0x400A0000 +#define LPC32XX_I2C2_BASE 0x400A8000 + +/* + * FAB and APB base and sizing + */ +#define LPC32XX_FABAPB_START LPC32XX_CLK_PM_BASE +#define LPC32XX_FABAPB_SIZE 0x000A5000 + +/* + * Internal memory bases and sizes + */ +#define LPC32XX_IRAM_BASE 0x08000000 +#define LPC32XX_IROM_BASE 0x0C000000 + +/* + * External Static Memory Bank Address Space Bases + */ +#define LPC32XX_EMC_CS0_BASE 0xE0000000 +#define LPC32XX_EMC_CS1_BASE 0xE1000000 +#define LPC32XX_EMC_CS2_BASE 0xE2000000 +#define LPC32XX_EMC_CS3_BASE 0xE3000000 + +/* + * External SDRAM Memory Bank Address Space Bases + */ +#define LPC32XX_EMC_DYCS0_BASE 0x80000000 +#define LPC32XX_EMC_DYCS1_BASE 0xA0000000 + +/* + * Clock and crystal information + */ +#define LPC32XX_MAIN_OSC_FREQ 13000000 +#define LPC32XX_CLOCK_OSC_FREQ 32768 + +/* + * Clock and Power control register offsets + */ +#define _PMREG(x) io_p2v(LPC32XX_CLK_PM_BASE +\ + (x)) +#define LPC32XX_CLKPWR_DEBUG_CTRL _PMREG(0x000) +#define LPC32XX_CLKPWR_BOOTMAP _PMREG(0x014) +#define LPC32XX_CLKPWR_P01_ER _PMREG(0x018) +#define LPC32XX_CLKPWR_USBCLK_PDIV _PMREG(0x01C) +#define LPC32XX_CLKPWR_INT_ER _PMREG(0x020) +#define LPC32XX_CLKPWR_INT_RS _PMREG(0x024) +#define LPC32XX_CLKPWR_INT_SR _PMREG(0x028) +#define LPC32XX_CLKPWR_INT_AP _PMREG(0x02C) +#define LPC32XX_CLKPWR_PIN_ER _PMREG(0x030) +#define LPC32XX_CLKPWR_PIN_RS _PMREG(0x034) +#define LPC32XX_CLKPWR_PIN_SR _PMREG(0x038) +#define LPC32XX_CLKPWR_PIN_AP _PMREG(0x03C) +#define LPC32XX_CLKPWR_HCLK_DIV _PMREG(0x040) +#define LPC32XX_CLKPWR_PWR_CTRL _PMREG(0x044) +#define LPC32XX_CLKPWR_PLL397_CTRL _PMREG(0x048) +#define LPC32XX_CLKPWR_MAIN_OSC_CTRL _PMREG(0x04C) +#define LPC32XX_CLKPWR_SYSCLK_CTRL _PMREG(0x050) +#define LPC32XX_CLKPWR_LCDCLK_CTRL _PMREG(0x054) +#define LPC32XX_CLKPWR_HCLKPLL_CTRL _PMREG(0x058) +#define LPC32XX_CLKPWR_ADC_CLK_CTRL_1 _PMREG(0x060) +#define LPC32XX_CLKPWR_USB_CTRL _PMREG(0x064) +#define LPC32XX_CLKPWR_SDRAMCLK_CTRL _PMREG(0x068) +#define LPC32XX_CLKPWR_DDR_LAP_NOM _PMREG(0x06C) +#define LPC32XX_CLKPWR_DDR_LAP_COUNT _PMREG(0x070) +#define LPC32XX_CLKPWR_DDR_LAP_DELAY _PMREG(0x074) +#define LPC32XX_CLKPWR_SSP_CLK_CTRL _PMREG(0x078) +#define LPC32XX_CLKPWR_I2S_CLK_CTRL _PMREG(0x07C) +#define LPC32XX_CLKPWR_MS_CTRL _PMREG(0x080) +#define LPC32XX_CLKPWR_MACCLK_CTRL _PMREG(0x090) +#define LPC32XX_CLKPWR_TEST_CLK_SEL _PMREG(0x0A4) +#define LPC32XX_CLKPWR_SFW_INT _PMREG(0x0A8) +#define LPC32XX_CLKPWR_I2C_CLK_CTRL _PMREG(0x0AC) +#define LPC32XX_CLKPWR_KEY_CLK_CTRL _PMREG(0x0B0) +#define LPC32XX_CLKPWR_ADC_CLK_CTRL _PMREG(0x0B4) +#define LPC32XX_CLKPWR_PWM_CLK_CTRL _PMREG(0x0B8) +#define LPC32XX_CLKPWR_TIMER_CLK_CTRL _PMREG(0x0BC) +#define LPC32XX_CLKPWR_TIMERS_PWMS_CLK_CTRL_1 _PMREG(0x0C0) +#define LPC32XX_CLKPWR_SPI_CLK_CTRL _PMREG(0x0C4) +#define LPC32XX_CLKPWR_NAND_CLK_CTRL _PMREG(0x0C8) +#define LPC32XX_CLKPWR_UART3_CLK_CTRL _PMREG(0x0D0) +#define LPC32XX_CLKPWR_UART4_CLK_CTRL _PMREG(0x0D4) +#define LPC32XX_CLKPWR_UART5_CLK_CTRL _PMREG(0x0D8) +#define LPC32XX_CLKPWR_UART6_CLK_CTRL _PMREG(0x0DC) +#define LPC32XX_CLKPWR_IRDA_CLK_CTRL _PMREG(0x0E0) +#define LPC32XX_CLKPWR_UART_CLK_CTRL _PMREG(0x0E4) +#define LPC32XX_CLKPWR_DMA_CLK_CTRL _PMREG(0x0E8) +#define LPC32XX_CLKPWR_AUTOCLOCK _PMREG(0x0EC) +#define LPC32XX_CLKPWR_DEVID(x) _PMREG(0x130 + (x)) + +/* + * clkpwr_debug_ctrl register definitions +*/ +#define LPC32XX_CLKPWR_VFP_CLOCK_ENABLE_BIT _BIT(4) + +/* + * clkpwr_bootmap register definitions + */ +#define LPC32XX_CLKPWR_BOOTMAP_SEL_BIT _BIT(1) + +/* + * clkpwr_start_gpio register bit definitions + */ +#define LPC32XX_CLKPWR_GPIOSRC_P1IO23_BIT _BIT(31) +#define LPC32XX_CLKPWR_GPIOSRC_P1IO22_BIT _BIT(30) +#define LPC32XX_CLKPWR_GPIOSRC_P1IO21_BIT _BIT(29) +#define LPC32XX_CLKPWR_GPIOSRC_P1IO20_BIT _BIT(28) +#define LPC32XX_CLKPWR_GPIOSRC_P1IO19_BIT _BIT(27) +#define LPC32XX_CLKPWR_GPIOSRC_P1IO18_BIT _BIT(26) +#define LPC32XX_CLKPWR_GPIOSRC_P1IO17_BIT _BIT(25) +#define LPC32XX_CLKPWR_GPIOSRC_P1IO16_BIT _BIT(24) +#define LPC32XX_CLKPWR_GPIOSRC_P1IO15_BIT _BIT(23) +#define LPC32XX_CLKPWR_GPIOSRC_P1IO14_BIT _BIT(22) +#define LPC32XX_CLKPWR_GPIOSRC_P1IO13_BIT _BIT(21) +#define LPC32XX_CLKPWR_GPIOSRC_P1IO12_BIT _BIT(20) +#define LPC32XX_CLKPWR_GPIOSRC_P1IO11_BIT _BIT(19) +#define LPC32XX_CLKPWR_GPIOSRC_P1IO10_BIT _BIT(18) +#define LPC32XX_CLKPWR_GPIOSRC_P1IO9_BIT _BIT(17) +#define LPC32XX_CLKPWR_GPIOSRC_P1IO8_BIT _BIT(16) +#define LPC32XX_CLKPWR_GPIOSRC_P1IO7_BIT _BIT(15) +#define LPC32XX_CLKPWR_GPIOSRC_P1IO6_BIT _BIT(14) +#define LPC32XX_CLKPWR_GPIOSRC_P1IO5_BIT _BIT(13) +#define LPC32XX_CLKPWR_GPIOSRC_P1IO4_BIT _BIT(12) +#define LPC32XX_CLKPWR_GPIOSRC_P1IO3_BIT _BIT(11) +#define LPC32XX_CLKPWR_GPIOSRC_P1IO2_BIT _BIT(10) +#define LPC32XX_CLKPWR_GPIOSRC_P1IO1_BIT _BIT(9) +#define LPC32XX_CLKPWR_GPIOSRC_P1IO0_BIT _BIT(8) +#define LPC32XX_CLKPWR_GPIOSRC_P0IO7_BIT _BIT(7) +#define LPC32XX_CLKPWR_GPIOSRC_P0IO6_BIT _BIT(6) +#define LPC32XX_CLKPWR_GPIOSRC_P0IO5_BIT _BIT(5) +#define LPC32XX_CLKPWR_GPIOSRC_P0IO4_BIT _BIT(4) +#define LPC32XX_CLKPWR_GPIOSRC_P0IO3_BIT _BIT(3) +#define LPC32XX_CLKPWR_GPIOSRC_P0IO2_BIT _BIT(2) +#define LPC32XX_CLKPWR_GPIOSRC_P0IO1_BIT _BIT(1) +#define LPC32XX_CLKPWR_GPIOSRC_P0IO0_BIT _BIT(0) + +/* + * clkpwr_usbclk_pdiv register definitions + */ +#define LPC32XX_CLKPWR_USBPDIV_PLL_MASK 0xF + +/* + * clkpwr_start_int, clkpwr_start_raw_sts_int, clkpwr_start_sts_int, + * clkpwr_start_pol_int, register bit definitions + */ +#define LPC32XX_CLKPWR_INTSRC_ADC_BIT _BIT(31) +#define LPC32XX_CLKPWR_INTSRC_TS_P_BIT _BIT(30) +#define LPC32XX_CLKPWR_INTSRC_TS_AUX_BIT _BIT(29) +#define LPC32XX_CLKPWR_INTSRC_USBAHNEEDCLK_BIT _BIT(26) +#define LPC32XX_CLKPWR_INTSRC_MSTIMER_BIT _BIT(25) +#define LPC32XX_CLKPWR_INTSRC_RTC_BIT _BIT(24) +#define LPC32XX_CLKPWR_INTSRC_USBNEEDCLK_BIT _BIT(23) +#define LPC32XX_CLKPWR_INTSRC_USB_BIT _BIT(22) +#define LPC32XX_CLKPWR_INTSRC_I2C_BIT _BIT(21) +#define LPC32XX_CLKPWR_INTSRC_USBOTGTIMER_BIT _BIT(20) +#define LPC32XX_CLKPWR_INTSRC_USBATXINT_BIT _BIT(19) +#define LPC32XX_CLKPWR_INTSRC_KEY_BIT _BIT(16) +#define LPC32XX_CLKPWR_INTSRC_MAC_BIT _BIT(7) +#define LPC32XX_CLKPWR_INTSRC_P0P1_BIT _BIT(6) +#define LPC32XX_CLKPWR_INTSRC_GPIO_05_BIT _BIT(5) +#define LPC32XX_CLKPWR_INTSRC_GPIO_04_BIT _BIT(4) +#define LPC32XX_CLKPWR_INTSRC_GPIO_03_BIT _BIT(3) +#define LPC32XX_CLKPWR_INTSRC_GPIO_02_BIT _BIT(2) +#define LPC32XX_CLKPWR_INTSRC_GPIO_01_BIT _BIT(1) +#define LPC32XX_CLKPWR_INTSRC_GPIO_00_BIT _BIT(0) + +/* + * clkpwr_start_pin, clkpwr_start_raw_sts_pin, clkpwr_start_sts_pin, + * clkpwr_start_pol_pin register bit definitions + */ +#define LPC32XX_CLKPWR_EXTSRC_U7_RX_BIT _BIT(31) +#define LPC32XX_CLKPWR_EXTSRC_U7_HCTS_BIT _BIT(30) +#define LPC32XX_CLKPWR_EXTSRC_U6_IRRX_BIT _BIT(28) +#define LPC32XX_CLKPWR_EXTSRC_U5_RX_BIT _BIT(26) +#define LPC32XX_CLKPWR_EXTSRC_GPI_28_BIT _BIT(25) +#define LPC32XX_CLKPWR_EXTSRC_U3_RX_BIT _BIT(24) +#define LPC32XX_CLKPWR_EXTSRC_U2_HCTS_BIT _BIT(23) +#define LPC32XX_CLKPWR_EXTSRC_U2_RX_BIT _BIT(22) +#define LPC32XX_CLKPWR_EXTSRC_U1_RX_BIT _BIT(21) +#define LPC32XX_CLKPWR_EXTSRC_MSDIO_INT_BIT _BIT(18) +#define LPC32XX_CLKPWR_EXTSRC_MSDIO_SRT_BIT _BIT(17) +#define LPC32XX_CLKPWR_EXTSRC_GPI_06_BIT _BIT(16) +#define LPC32XX_CLKPWR_EXTSRC_GPI_05_BIT _BIT(15) +#define LPC32XX_CLKPWR_EXTSRC_GPI_04_BIT _BIT(14) +#define LPC32XX_CLKPWR_EXTSRC_GPI_03_BIT _BIT(13) +#define LPC32XX_CLKPWR_EXTSRC_GPI_02_BIT _BIT(12) +#define LPC32XX_CLKPWR_EXTSRC_GPI_01_BIT _BIT(11) +#define LPC32XX_CLKPWR_EXTSRC_GPI_00_BIT _BIT(10) +#define LPC32XX_CLKPWR_EXTSRC_SYSCLKEN_BIT _BIT(9) +#define LPC32XX_CLKPWR_EXTSRC_SPI1_DATIN_BIT _BIT(8) +#define LPC32XX_CLKPWR_EXTSRC_GPI_07_BIT _BIT(7) +#define LPC32XX_CLKPWR_EXTSRC_SPI2_DATIN_BIT _BIT(6) +#define LPC32XX_CLKPWR_EXTSRC_GPI_19_BIT _BIT(5) +#define LPC32XX_CLKPWR_EXTSRC_GPI_09_BIT _BIT(4) +#define LPC32XX_CLKPWR_EXTSRC_GPI_08_BIT _BIT(3) + +/* + * clkpwr_hclk_div register definitions + */ +#define LPC32XX_CLKPWR_HCLKDIV_DDRCLK_STOP (0x0 << 7) +#define LPC32XX_CLKPWR_HCLKDIV_DDRCLK_NORM (0x1 << 7) +#define LPC32XX_CLKPWR_HCLKDIV_DDRCLK_HALF (0x2 << 7) +#define LPC32XX_CLKPWR_HCLKDIV_PCLK_DIV(n) (((n) & 0x1F) << 2) +#define LPC32XX_CLKPWR_HCLKDIV_DIV_2POW(n) ((n) & 0x3) + +/* + * clkpwr_pwr_ctrl register definitions + */ +#define LPC32XX_CLKPWR_CTRL_FORCE_PCLK _BIT(10) +#define LPC32XX_CLKPWR_SDRAM_SELF_RFSH _BIT(9) +#define LPC32XX_CLKPWR_UPD_SDRAM_SELF_RFSH _BIT(8) +#define LPC32XX_CLKPWR_AUTO_SDRAM_SELF_RFSH _BIT(7) +#define LPC32XX_CLKPWR_HIGHCORE_STATE_BIT _BIT(5) +#define LPC32XX_CLKPWR_SYSCLKEN_STATE_BIT _BIT(4) +#define LPC32XX_CLKPWR_SYSCLKEN_GPIO_EN _BIT(3) +#define LPC32XX_CLKPWR_SELECT_RUN_MODE _BIT(2) +#define LPC32XX_CLKPWR_HIGHCORE_GPIO_EN _BIT(1) +#define LPC32XX_CLKPWR_STOP_MODE_CTRL _BIT(0) + +/* + * clkpwr_pll397_ctrl register definitions + */ +#define LPC32XX_CLKPWR_PLL397_MSLOCK_STS _BIT(10) +#define LPC32XX_CLKPWR_PLL397_BYPASS _BIT(9) +#define LPC32XX_CLKPWR_PLL397_BIAS_NORM 0x000 +#define LPC32XX_CLKPWR_PLL397_BIAS_N12_5 0x040 +#define LPC32XX_CLKPWR_PLL397_BIAS_N25 0x080 +#define LPC32XX_CLKPWR_PLL397_BIAS_N37_5 0x0C0 +#define LPC32XX_CLKPWR_PLL397_BIAS_P12_5 0x100 +#define LPC32XX_CLKPWR_PLL397_BIAS_P25 0x140 +#define LPC32XX_CLKPWR_PLL397_BIAS_P37_5 0x180 +#define LPC32XX_CLKPWR_PLL397_BIAS_P50 0x1C0 +#define LPC32XX_CLKPWR_PLL397_BIAS_MASK 0x1C0 +#define LPC32XX_CLKPWR_SYSCTRL_PLL397_DIS _BIT(1) +#define LPC32XX_CLKPWR_SYSCTRL_PLL397_STS _BIT(0) + +/* + * clkpwr_main_osc_ctrl register definitions + */ +#define LPC32XX_CLKPWR_MOSC_ADD_CAP(n) (((n) & 0x7F) << 2) +#define LPC32XX_CLKPWR_MOSC_CAP_MASK (0x7F << 2) +#define LPC32XX_CLKPWR_TEST_MODE _BIT(1) +#define LPC32XX_CLKPWR_MOSC_DISABLE _BIT(0) + +/* + * clkpwr_sysclk_ctrl register definitions + */ +#define LPC32XX_CLKPWR_SYSCTRL_BP_TRIG(n) (((n) & 0x3FF) << 2) +#define LPC32XX_CLKPWR_SYSCTRL_BP_MASK (0x3FF << 2) +#define LPC32XX_CLKPWR_SYSCTRL_USEPLL397 _BIT(1) +#define LPC32XX_CLKPWR_SYSCTRL_SYSCLKMUX _BIT(0) + +/* + * clkpwr_lcdclk_ctrl register definitions + */ +#define LPC32XX_CLKPWR_LCDCTRL_LCDTYPE_TFT12 0x000 +#define LPC32XX_CLKPWR_LCDCTRL_LCDTYPE_TFT16 0x040 +#define LPC32XX_CLKPWR_LCDCTRL_LCDTYPE_TFT15 0x080 +#define LPC32XX_CLKPWR_LCDCTRL_LCDTYPE_TFT24 0x0C0 +#define LPC32XX_CLKPWR_LCDCTRL_LCDTYPE_STN4M 0x100 +#define LPC32XX_CLKPWR_LCDCTRL_LCDTYPE_STN8C 0x140 +#define LPC32XX_CLKPWR_LCDCTRL_LCDTYPE_DSTN4M 0x180 +#define LPC32XX_CLKPWR_LCDCTRL_LCDTYPE_DSTN8C 0x1C0 +#define LPC32XX_CLKPWR_LCDCTRL_LCDTYPE_MSK 0x01C0 +#define LPC32XX_CLKPWR_LCDCTRL_CLK_EN 0x020 +#define LPC32XX_CLKPWR_LCDCTRL_SET_PSCALE(n) ((n - 1) & 0x1F) +#define LPC32XX_CLKPWR_LCDCTRL_PSCALE_MSK 0x001F + +/* + * clkpwr_hclkpll_ctrl register definitions + */ +#define LPC32XX_CLKPWR_HCLKPLL_POWER_UP _BIT(16) +#define LPC32XX_CLKPWR_HCLKPLL_CCO_BYPASS _BIT(15) +#define LPC32XX_CLKPWR_HCLKPLL_POSTDIV_BYPASS _BIT(14) +#define LPC32XX_CLKPWR_HCLKPLL_FDBK_SEL_FCLK _BIT(13) +#define LPC32XX_CLKPWR_HCLKPLL_POSTDIV_2POW(n) (((n) & 0x3) << 11) +#define LPC32XX_CLKPWR_HCLKPLL_PREDIV_PLUS1(n) (((n) & 0x3) << 9) +#define LPC32XX_CLKPWR_HCLKPLL_PLLM(n) (((n) & 0xFF) << 1) +#define LPC32XX_CLKPWR_HCLKPLL_PLL_STS _BIT(0) + +/* + * clkpwr_adc_clk_ctrl_1 register definitions + */ +#define LPC32XX_CLKPWR_ADCCTRL1_RTDIV(n) (((n) & 0xFF) << 0) +#define LPC32XX_CLKPWR_ADCCTRL1_PCLK_SEL _BIT(8) + +/* + * clkpwr_usb_ctrl register definitions + */ +#define LPC32XX_CLKPWR_USBCTRL_HCLK_EN _BIT(24) +#define LPC32XX_CLKPWR_USBCTRL_USBI2C_EN _BIT(23) +#define LPC32XX_CLKPWR_USBCTRL_USBDVND_EN _BIT(22) +#define LPC32XX_CLKPWR_USBCTRL_USBHSTND_EN _BIT(21) +#define LPC32XX_CLKPWR_USBCTRL_PU_ADD (0x0 << 19) +#define LPC32XX_CLKPWR_USBCTRL_BUS_KEEPER (0x1 << 19) +#define LPC32XX_CLKPWR_USBCTRL_PD_ADD (0x3 << 19) +#define LPC32XX_CLKPWR_USBCTRL_CLK_EN2 _BIT(18) +#define LPC32XX_CLKPWR_USBCTRL_CLK_EN1 _BIT(17) +#define LPC32XX_CLKPWR_USBCTRL_PLL_PWRUP _BIT(16) +#define LPC32XX_CLKPWR_USBCTRL_CCO_BYPASS _BIT(15) +#define LPC32XX_CLKPWR_USBCTRL_POSTDIV_BYPASS _BIT(14) +#define LPC32XX_CLKPWR_USBCTRL_FDBK_SEL_FCLK _BIT(13) +#define LPC32XX_CLKPWR_USBCTRL_POSTDIV_2POW(n) (((n) & 0x3) << 11) +#define LPC32XX_CLKPWR_USBCTRL_PREDIV_PLUS1(n) (((n) & 0x3) << 9) +#define LPC32XX_CLKPWR_USBCTRL_FDBK_PLUS1(n) (((n) & 0xFF) << 1) +#define LPC32XX_CLKPWR_USBCTRL_PLL_STS _BIT(0) + +/* + * clkpwr_sdramclk_ctrl register definitions + */ +#define LPC32XX_CLKPWR_SDRCLK_FASTSLEW_CLK _BIT(22) +#define LPC32XX_CLKPWR_SDRCLK_FASTSLEW _BIT(21) +#define LPC32XX_CLKPWR_SDRCLK_FASTSLEW_DAT _BIT(20) +#define LPC32XX_CLKPWR_SDRCLK_SW_DDR_RESET _BIT(19) +#define LPC32XX_CLKPWR_SDRCLK_HCLK_DLY(n) (((n) & 0x1F) << 14) +#define LPC32XX_CLKPWR_SDRCLK_DLY_ADDR_STS _BIT(13) +#define LPC32XX_CLKPWR_SDRCLK_SENS_FACT(n) (((n) & 0x7) << 10) +#define LPC32XX_CLKPWR_SDRCLK_USE_CAL _BIT(9) +#define LPC32XX_CLKPWR_SDRCLK_DO_CAL _BIT(8) +#define LPC32XX_CLKPWR_SDRCLK_CAL_ON_RTC _BIT(7) +#define LPC32XX_CLKPWR_SDRCLK_DQS_DLY(n) (((n) & 0x1F) << 2) +#define LPC32XX_CLKPWR_SDRCLK_USE_DDR _BIT(1) +#define LPC32XX_CLKPWR_SDRCLK_CLK_DIS _BIT(0) + +/* + * clkpwr_ssp_blk_ctrl register definitions + */ +#define LPC32XX_CLKPWR_SSPCTRL_DMA_SSP1RX _BIT(5) +#define LPC32XX_CLKPWR_SSPCTRL_DMA_SSP1TX _BIT(4) +#define LPC32XX_CLKPWR_SSPCTRL_DMA_SSP0RX _BIT(3) +#define LPC32XX_CLKPWR_SSPCTRL_DMA_SSP0TX _BIT(2) +#define LPC32XX_CLKPWR_SSPCTRL_SSPCLK1_EN _BIT(1) +#define LPC32XX_CLKPWR_SSPCTRL_SSPCLK0_EN _BIT(0) + +/* + * clkpwr_i2s_clk_ctrl register definitions + */ +#define LPC32XX_CLKPWR_I2SCTRL_I2S1_RX_FOR_TX _BIT(6) +#define LPC32XX_CLKPWR_I2SCTRL_I2S1_TX_FOR_RX _BIT(5) +#define LPC32XX_CLKPWR_I2SCTRL_I2S1_USE_DMA _BIT(4) +#define LPC32XX_CLKPWR_I2SCTRL_I2S0_RX_FOR_TX _BIT(3) +#define LPC32XX_CLKPWR_I2SCTRL_I2S0_TX_FOR_RX _BIT(2) +#define LPC32XX_CLKPWR_I2SCTRL_I2SCLK1_EN _BIT(1) +#define LPC32XX_CLKPWR_I2SCTRL_I2SCLK0_EN _BIT(0) + +/* + * clkpwr_ms_ctrl register definitions + */ +#define LPC32XX_CLKPWR_MSCARD_MSDIO_PIN_DIS _BIT(10) +#define LPC32XX_CLKPWR_MSCARD_MSDIO_PU_EN _BIT(9) +#define LPC32XX_CLKPWR_MSCARD_MSDIO23_DIS _BIT(8) +#define LPC32XX_CLKPWR_MSCARD_MSDIO1_DIS _BIT(7) +#define LPC32XX_CLKPWR_MSCARD_MSDIO0_DIS _BIT(6) +#define LPC32XX_CLKPWR_MSCARD_SDCARD_EN _BIT(5) +#define LPC32XX_CLKPWR_MSCARD_SDCARD_DIV(n) ((n) & 0xF) + +/* + * clkpwr_macclk_ctrl register definitions + */ +#define LPC32XX_CLKPWR_MACCTRL_NO_ENET_PIS 0x00 +#define LPC32XX_CLKPWR_MACCTRL_USE_MII_PINS 0x08 +#define LPC32XX_CLKPWR_MACCTRL_USE_RMII_PINS 0x18 +#define LPC32XX_CLKPWR_MACCTRL_PINS_MSK 0x18 +#define LPC32XX_CLKPWR_MACCTRL_DMACLK_EN _BIT(2) +#define LPC32XX_CLKPWR_MACCTRL_MMIOCLK_EN _BIT(1) +#define LPC32XX_CLKPWR_MACCTRL_HRCCLK_EN _BIT(0) + +/* + * clkpwr_test_clk_sel register definitions + */ +#define LPC32XX_CLKPWR_TESTCLK1_SEL_PERCLK (0x0 << 5) +#define LPC32XX_CLKPWR_TESTCLK1_SEL_RTC (0x1 << 5) +#define LPC32XX_CLKPWR_TESTCLK1_SEL_MOSC (0x2 << 5) +#define LPC32XX_CLKPWR_TESTCLK1_SEL_MASK (0x3 << 5) +#define LPC32XX_CLKPWR_TESTCLK_TESTCLK1_EN _BIT(4) +#define LPC32XX_CLKPWR_TESTCLK2_SEL_HCLK (0x0 << 1) +#define LPC32XX_CLKPWR_TESTCLK2_SEL_PERCLK (0x1 << 1) +#define LPC32XX_CLKPWR_TESTCLK2_SEL_USBCLK (0x2 << 1) +#define LPC32XX_CLKPWR_TESTCLK2_SEL_MOSC (0x5 << 1) +#define LPC32XX_CLKPWR_TESTCLK2_SEL_PLL397 (0x7 << 1) +#define LPC32XX_CLKPWR_TESTCLK2_SEL_MASK (0x7 << 1) +#define LPC32XX_CLKPWR_TESTCLK_TESTCLK2_EN _BIT(0) + +/* + * clkpwr_sw_int register definitions + */ +#define LPC32XX_CLKPWR_SW_INT(n) (_BIT(0) | (((n) & 0x7F) << 1)) +#define LPC32XX_CLKPWR_SW_GET_ARG(n) (((n) & 0xFE) >> 1) + +/* + * clkpwr_i2c_clk_ctrl register definitions + */ +#define LPC32XX_CLKPWR_I2CCLK_USBI2CHI_DRIVE _BIT(4) +#define LPC32XX_CLKPWR_I2CCLK_I2C2HI_DRIVE _BIT(3) +#define LPC32XX_CLKPWR_I2CCLK_I2C1HI_DRIVE _BIT(2) +#define LPC32XX_CLKPWR_I2CCLK_I2C2CLK_EN _BIT(1) +#define LPC32XX_CLKPWR_I2CCLK_I2C1CLK_EN _BIT(0) + +/* + * clkpwr_key_clk_ctrl register definitions + */ +#define LPC32XX_CLKPWR_KEYCLKCTRL_CLK_EN 0x1 + +/* + * clkpwr_adc_clk_ctrl register definitions + */ +#define LPC32XX_CLKPWR_ADC32CLKCTRL_CLK_EN 0x1 + +/* + * clkpwr_pwm_clk_ctrl register definitions + */ +#define LPC32XX_CLKPWR_PWMCLK_PWM2_DIV(n) (((n) & 0xF) << 8) +#define LPC32XX_CLKPWR_PWMCLK_PWM1_DIV(n) (((n) & 0xF) << 4) +#define LPC32XX_CLKPWR_PWMCLK_PWM2SEL_PCLK 0x8 +#define LPC32XX_CLKPWR_PWMCLK_PWM2CLK_EN 0x4 +#define LPC32XX_CLKPWR_PWMCLK_PWM1SEL_PCLK 0x2 +#define LPC32XX_CLKPWR_PWMCLK_PWM1CLK_EN 0x1 + +/* + * clkpwr_timer_clk_ctrl register definitions + */ +#define LPC32XX_CLKPWR_PWMCLK_HSTIMER_EN 0x2 +#define LPC32XX_CLKPWR_PWMCLK_WDOG_EN 0x1 + +/* + * clkpwr_timers_pwms_clk_ctrl_1 register definitions + */ +#define LPC32XX_CLKPWR_TMRPWMCLK_MPWM_EN 0x40 +#define LPC32XX_CLKPWR_TMRPWMCLK_TIMER3_EN 0x20 +#define LPC32XX_CLKPWR_TMRPWMCLK_TIMER2_EN 0x10 +#define LPC32XX_CLKPWR_TMRPWMCLK_TIMER1_EN 0x08 +#define LPC32XX_CLKPWR_TMRPWMCLK_TIMER0_EN 0x04 +#define LPC32XX_CLKPWR_TMRPWMCLK_PWM4_EN 0x02 +#define LPC32XX_CLKPWR_TMRPWMCLK_PWM3_EN 0x01 + +/* + * clkpwr_spi_clk_ctrl register definitions + */ +#define LPC32XX_CLKPWR_SPICLK_SET_SPI2DATIO 0x80 +#define LPC32XX_CLKPWR_SPICLK_SET_SPI2CLK 0x40 +#define LPC32XX_CLKPWR_SPICLK_USE_SPI2 0x20 +#define LPC32XX_CLKPWR_SPICLK_SPI2CLK_EN 0x10 +#define LPC32XX_CLKPWR_SPICLK_SET_SPI1DATIO 0x08 +#define LPC32XX_CLKPWR_SPICLK_SET_SPI1CLK 0x04 +#define LPC32XX_CLKPWR_SPICLK_USE_SPI1 0x02 +#define LPC32XX_CLKPWR_SPICLK_SPI1CLK_EN 0x01 + +/* + * clkpwr_nand_clk_ctrl register definitions + */ +#define LPC32XX_CLKPWR_NANDCLK_INTSEL_MLC 0x20 +#define LPC32XX_CLKPWR_NANDCLK_DMA_RNB 0x10 +#define LPC32XX_CLKPWR_NANDCLK_DMA_INT 0x08 +#define LPC32XX_CLKPWR_NANDCLK_SEL_SLC 0x04 +#define LPC32XX_CLKPWR_NANDCLK_MLCCLK_EN 0x02 +#define LPC32XX_CLKPWR_NANDCLK_SLCCLK_EN 0x01 + +/* + * clkpwr_uart3_clk_ctrl, clkpwr_uart4_clk_ctrl, clkpwr_uart5_clk_ctrl + * and clkpwr_uart6_clk_ctrl register definitions + */ +#define LPC32XX_CLKPWR_UART_Y_DIV(y) ((y) & 0xFF) +#define LPC32XX_CLKPWR_UART_X_DIV(x) (((x) & 0xFF) << 8) +#define LPC32XX_CLKPWR_UART_USE_HCLK _BIT(16) + +/* + * clkpwr_irda_clk_ctrl register definitions + */ +#define LPC32XX_CLKPWR_IRDA_Y_DIV(y) ((y) & 0xFF) +#define LPC32XX_CLKPWR_IRDA_X_DIV(x) (((x) & 0xFF) << 8) + +/* + * clkpwr_uart_clk_ctrl register definitions + */ +#define LPC32XX_CLKPWR_UARTCLKCTRL_UART6_EN _BIT(3) +#define LPC32XX_CLKPWR_UARTCLKCTRL_UART5_EN _BIT(2) +#define LPC32XX_CLKPWR_UARTCLKCTRL_UART4_EN _BIT(1) +#define LPC32XX_CLKPWR_UARTCLKCTRL_UART3_EN _BIT(0) + +/* + * clkpwr_dmaclk_ctrl register definitions + */ +#define LPC32XX_CLKPWR_DMACLKCTRL_CLK_EN 0x1 + +/* + * clkpwr_autoclock register definitions + */ +#define LPC32XX_CLKPWR_AUTOCLK_USB_EN 0x40 +#define LPC32XX_CLKPWR_AUTOCLK_IRAM_EN 0x02 +#define LPC32XX_CLKPWR_AUTOCLK_IROM_EN 0x01 + +/* + * Interrupt controller register offsets + */ +#define LPC32XX_INTC_MASK(x) io_p2v((x) + 0x00) +#define LPC32XX_INTC_RAW_STAT(x) io_p2v((x) + 0x04) +#define LPC32XX_INTC_STAT(x) io_p2v((x) + 0x08) +#define LPC32XX_INTC_POLAR(x) io_p2v((x) + 0x0C) +#define LPC32XX_INTC_ACT_TYPE(x) io_p2v((x) + 0x10) +#define LPC32XX_INTC_TYPE(x) io_p2v((x) + 0x14) + +/* + * Timer/counter register offsets + */ +#define LPC32XX_TIMER_IR(x) io_p2v((x) + 0x00) +#define LPC32XX_TIMER_TCR(x) io_p2v((x) + 0x04) +#define LPC32XX_TIMER_TC(x) io_p2v((x) + 0x08) +#define LPC32XX_TIMER_PR(x) io_p2v((x) + 0x0C) +#define LPC32XX_TIMER_PC(x) io_p2v((x) + 0x10) +#define LPC32XX_TIMER_MCR(x) io_p2v((x) + 0x14) +#define LPC32XX_TIMER_MR0(x) io_p2v((x) + 0x18) +#define LPC32XX_TIMER_MR1(x) io_p2v((x) + 0x1C) +#define LPC32XX_TIMER_MR2(x) io_p2v((x) + 0x20) +#define LPC32XX_TIMER_MR3(x) io_p2v((x) + 0x24) +#define LPC32XX_TIMER_CCR(x) io_p2v((x) + 0x28) +#define LPC32XX_TIMER_CR0(x) io_p2v((x) + 0x2C) +#define LPC32XX_TIMER_CR1(x) io_p2v((x) + 0x30) +#define LPC32XX_TIMER_CR2(x) io_p2v((x) + 0x34) +#define LPC32XX_TIMER_CR3(x) io_p2v((x) + 0x38) +#define LPC32XX_TIMER_EMR(x) io_p2v((x) + 0x3C) +#define LPC32XX_TIMER_CTCR(x) io_p2v((x) + 0x70) + +/* + * ir register definitions + */ +#define LPC32XX_TIMER_CNTR_MTCH_BIT(n) (1 << ((n) & 0x3)) +#define LPC32XX_TIMER_CNTR_CAPT_BIT(n) (1 << (4 + ((n) & 0x3))) + +/* + * tcr register definitions + */ +#define LPC32XX_TIMER_CNTR_TCR_EN 0x1 +#define LPC32XX_TIMER_CNTR_TCR_RESET 0x2 + +/* + * mcr register definitions + */ +#define LPC32XX_TIMER_CNTR_MCR_MTCH(n) (0x1 << ((n) * 3)) +#define LPC32XX_TIMER_CNTR_MCR_RESET(n) (0x1 << (((n) * 3) + 1)) +#define LPC32XX_TIMER_CNTR_MCR_STOP(n) (0x1 << (((n) * 3) + 2)) + +/* + * Standard UART register offsets + */ +#define LPC32XX_UART_DLL_FIFO(x) io_p2v((x) + 0x00) +#define LPC32XX_UART_DLM_IER(x) io_p2v((x) + 0x04) +#define LPC32XX_UART_IIR_FCR(x) io_p2v((x) + 0x08) +#define LPC32XX_UART_LCR(x) io_p2v((x) + 0x0C) +#define LPC32XX_UART_MODEM_CTRL(x) io_p2v((x) + 0x10) +#define LPC32XX_UART_LSR(x) io_p2v((x) + 0x14) +#define LPC32XX_UART_MODEM_STATUS(x) io_p2v((x) + 0x18) +#define LPC32XX_UART_RXLEV(x) io_p2v((x) + 0x1C) + +/* + * UART control structure offsets + */ +#define _UCREG(x) io_p2v(\ + LPC32XX_UART_CTRL_BASE + (x)) +#define LPC32XX_UARTCTL_CTRL _UCREG(0x00) +#define LPC32XX_UARTCTL_CLKMODE _UCREG(0x04) +#define LPC32XX_UARTCTL_CLOOP _UCREG(0x08) + +/* + * ctrl register definitions + */ +#define LPC32XX_UART_U3_MD_CTRL_EN _BIT(11) +#define LPC32XX_UART_IRRX6_INV_EN _BIT(10) +#define LPC32XX_UART_HDPX_EN _BIT(9) +#define LPC32XX_UART_UART6_IRDAMOD_BYPASS _BIT(5) +#define LPC32XX_RT_IRTX6_INV_EN _BIT(4) +#define LPC32XX_RT_IRTX6_INV_MIR_EN _BIT(3) +#define LPC32XX_RT_RX_IRPULSE_3_16_115K _BIT(2) +#define LPC32XX_RT_TX_IRPULSE_3_16_115K _BIT(1) +#define LPC32XX_UART_U5_ROUTE_TO_USB _BIT(0) + +/* + * clkmode register definitions + */ +#define LPC32XX_UART_ENABLED_CLOCKS(n) (((n) >> 16) & 0x7F) +#define LPC32XX_UART_ENABLED_CLOCK(n, u) (((n) >> (16 + (u))) & 0x1) +#define LPC32XX_UART_ENABLED_CLKS_ANY _BIT(14) +#define LPC32XX_UART_CLKMODE_OFF 0x0 +#define LPC32XX_UART_CLKMODE_ON 0x1 +#define LPC32XX_UART_CLKMODE_AUTO 0x2 +#define LPC32XX_UART_CLKMODE_MASK(u) (0x3 << ((((u) - 3) * 2) + 4)) +#define LPC32XX_UART_CLKMODE_LOAD(m, u) ((m) << ((((u) - 3) * 2) + 4)) + +/* + * GPIO Module Register offsets + */ +#define _GPREG(x) io_p2v(LPC32XX_GPIO_BASE + (x)) +#define LPC32XX_GPIO_P_MUX_SET _GPREG(0x100) +#define LPC32XX_GPIO_P_MUX_CLR _GPREG(0x104) +#define LPC32XX_GPIO_P_MUX_STATE _GPREG(0x108) +#define LPC32XX_GPIO_P3_MUX_SET _GPREG(0x110) +#define LPC32XX_GPIO_P3_MUX_CLR _GPREG(0x114) +#define LPC32XX_GPIO_P3_MUX_STATE _GPREG(0x118) +#define LPC32XX_GPIO_P0_MUX_SET _GPREG(0x120) +#define LPC32XX_GPIO_P0_MUX_CLR _GPREG(0x124) +#define LPC32XX_GPIO_P0_MUX_STATE _GPREG(0x128) +#define LPC32XX_GPIO_P1_MUX_SET _GPREG(0x130) +#define LPC32XX_GPIO_P1_MUX_CLR _GPREG(0x134) +#define LPC32XX_GPIO_P1_MUX_STATE _GPREG(0x138) +#define LPC32XX_GPIO_P2_MUX_SET _GPREG(0x028) +#define LPC32XX_GPIO_P2_MUX_CLR _GPREG(0x02C) +#define LPC32XX_GPIO_P2_MUX_STATE _GPREG(0x030) + +/* + * USB Otg Registers + */ +#define _OTGREG(x) io_p2v(LPC32XX_USB_OTG_BASE + (x)) +#define LPC32XX_USB_OTG_CLK_CTRL _OTGREG(0xFF4) +#define LPC32XX_USB_OTG_CLK_STAT _OTGREG(0xFF8) + +/* USB OTG CLK CTRL bit defines */ +#define LPC32XX_USB_OTG_AHB_M_CLOCK_ON _BIT(4) +#define LPC32XX_USB_OTG_OTG_CLOCK_ON _BIT(3) +#define LPC32XX_USB_OTG_I2C_CLOCK_ON _BIT(2) +#define LPC32XX_USB_OTG_DEV_CLOCK_ON _BIT(1) +#define LPC32XX_USB_OTG_HOST_CLOCK_ON _BIT(0) + +#endif diff --git a/kernel/arch/arm/mach-lpc32xx/include/mach/uncompress.h b/kernel/arch/arm/mach-lpc32xx/include/mach/uncompress.h new file mode 100644 index 000000000..1198a8918 --- /dev/null +++ b/kernel/arch/arm/mach-lpc32xx/include/mach/uncompress.h @@ -0,0 +1,59 @@ +/* + * arch/arm/mach-lpc32xx/include/mach/uncompress.h + * + * Author: Kevin Wells + * + * Copyright (C) 2010 NXP Semiconductors + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __ASM_ARM_ARCH_UNCOMPRESS_H +#define __ASM_ARM_ARCH_UNCOMPRESS_H + +#include + +#include +#include + +/* + * Uncompress output is hardcoded to standard UART 5 + */ + +#define UART_FIFO_CTL_TX_RESET (1 << 2) +#define UART_STATUS_TX_MT (1 << 6) + +#define _UARTREG(x) (void __iomem *)(LPC32XX_UART5_BASE + (x)) + +#define LPC32XX_UART_DLLFIFO_O 0x00 +#define LPC32XX_UART_IIRFCR_O 0x08 +#define LPC32XX_UART_LSR_O 0x14 + +static inline void putc(int ch) +{ + /* Wait for transmit FIFO to empty */ + while ((__raw_readl(_UARTREG(LPC32XX_UART_LSR_O)) & + UART_STATUS_TX_MT) == 0) + ; + + __raw_writel((u32) ch, _UARTREG(LPC32XX_UART_DLLFIFO_O)); +} + +static inline void flush(void) +{ + __raw_writel(__raw_readl(_UARTREG(LPC32XX_UART_IIRFCR_O)) | + UART_FIFO_CTL_TX_RESET, _UARTREG(LPC32XX_UART_IIRFCR_O)); +} + +/* NULL functions; we don't presently need them */ +#define arch_decomp_setup() + +#endif diff --git a/kernel/arch/arm/mach-lpc32xx/irq.c b/kernel/arch/arm/mach-lpc32xx/irq.c new file mode 100644 index 000000000..9ecb8f9c4 --- /dev/null +++ b/kernel/arch/arm/mach-lpc32xx/irq.c @@ -0,0 +1,477 @@ +/* + * arch/arm/mach-lpc32xx/irq.c + * + * Author: Kevin Wells + * + * Copyright (C) 2010 NXP Semiconductors + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include "common.h" + +/* + * Default value representing the Activation polarity of all internal + * interrupt sources + */ +#define MIC_APR_DEFAULT 0x3FF0EFE0 +#define SIC1_APR_DEFAULT 0xFBD27186 +#define SIC2_APR_DEFAULT 0x801810C0 + +/* + * Default value representing the Activation Type of all internal + * interrupt sources. All are level sensitive. + */ +#define MIC_ATR_DEFAULT 0x00000000 +#define SIC1_ATR_DEFAULT 0x00026000 +#define SIC2_ATR_DEFAULT 0x00000000 + +static struct irq_domain *lpc32xx_mic_domain; +static struct device_node *lpc32xx_mic_np; + +struct lpc32xx_event_group_regs { + void __iomem *enab_reg; + void __iomem *edge_reg; + void __iomem *maskstat_reg; + void __iomem *rawstat_reg; +}; + +static const struct lpc32xx_event_group_regs lpc32xx_event_int_regs = { + .enab_reg = LPC32XX_CLKPWR_INT_ER, + .edge_reg = LPC32XX_CLKPWR_INT_AP, + .maskstat_reg = LPC32XX_CLKPWR_INT_SR, + .rawstat_reg = LPC32XX_CLKPWR_INT_RS, +}; + +static const struct lpc32xx_event_group_regs lpc32xx_event_pin_regs = { + .enab_reg = LPC32XX_CLKPWR_PIN_ER, + .edge_reg = LPC32XX_CLKPWR_PIN_AP, + .maskstat_reg = LPC32XX_CLKPWR_PIN_SR, + .rawstat_reg = LPC32XX_CLKPWR_PIN_RS, +}; + +struct lpc32xx_event_info { + const struct lpc32xx_event_group_regs *event_group; + u32 mask; +}; + +/* + * Maps an IRQ number to and event mask and register + */ +static const struct lpc32xx_event_info lpc32xx_events[NR_IRQS] = { + [IRQ_LPC32XX_GPI_08] = { + .event_group = &lpc32xx_event_pin_regs, + .mask = LPC32XX_CLKPWR_EXTSRC_GPI_08_BIT, + }, + [IRQ_LPC32XX_GPI_09] = { + .event_group = &lpc32xx_event_pin_regs, + .mask = LPC32XX_CLKPWR_EXTSRC_GPI_09_BIT, + }, + [IRQ_LPC32XX_GPI_19] = { + .event_group = &lpc32xx_event_pin_regs, + .mask = LPC32XX_CLKPWR_EXTSRC_GPI_19_BIT, + }, + [IRQ_LPC32XX_GPI_07] = { + .event_group = &lpc32xx_event_pin_regs, + .mask = LPC32XX_CLKPWR_EXTSRC_GPI_07_BIT, + }, + [IRQ_LPC32XX_GPI_00] = { + .event_group = &lpc32xx_event_pin_regs, + .mask = LPC32XX_CLKPWR_EXTSRC_GPI_00_BIT, + }, + [IRQ_LPC32XX_GPI_01] = { + .event_group = &lpc32xx_event_pin_regs, + .mask = LPC32XX_CLKPWR_EXTSRC_GPI_01_BIT, + }, + [IRQ_LPC32XX_GPI_02] = { + .event_group = &lpc32xx_event_pin_regs, + .mask = LPC32XX_CLKPWR_EXTSRC_GPI_02_BIT, + }, + [IRQ_LPC32XX_GPI_03] = { + .event_group = &lpc32xx_event_pin_regs, + .mask = LPC32XX_CLKPWR_EXTSRC_GPI_03_BIT, + }, + [IRQ_LPC32XX_GPI_04] = { + .event_group = &lpc32xx_event_pin_regs, + .mask = LPC32XX_CLKPWR_EXTSRC_GPI_04_BIT, + }, + [IRQ_LPC32XX_GPI_05] = { + .event_group = &lpc32xx_event_pin_regs, + .mask = LPC32XX_CLKPWR_EXTSRC_GPI_05_BIT, + }, + [IRQ_LPC32XX_GPI_06] = { + .event_group = &lpc32xx_event_pin_regs, + .mask = LPC32XX_CLKPWR_EXTSRC_GPI_06_BIT, + }, + [IRQ_LPC32XX_GPI_28] = { + .event_group = &lpc32xx_event_pin_regs, + .mask = LPC32XX_CLKPWR_EXTSRC_GPI_28_BIT, + }, + [IRQ_LPC32XX_GPIO_00] = { + .event_group = &lpc32xx_event_int_regs, + .mask = LPC32XX_CLKPWR_INTSRC_GPIO_00_BIT, + }, + [IRQ_LPC32XX_GPIO_01] = { + .event_group = &lpc32xx_event_int_regs, + .mask = LPC32XX_CLKPWR_INTSRC_GPIO_01_BIT, + }, + [IRQ_LPC32XX_GPIO_02] = { + .event_group = &lpc32xx_event_int_regs, + .mask = LPC32XX_CLKPWR_INTSRC_GPIO_02_BIT, + }, + [IRQ_LPC32XX_GPIO_03] = { + .event_group = &lpc32xx_event_int_regs, + .mask = LPC32XX_CLKPWR_INTSRC_GPIO_03_BIT, + }, + [IRQ_LPC32XX_GPIO_04] = { + .event_group = &lpc32xx_event_int_regs, + .mask = LPC32XX_CLKPWR_INTSRC_GPIO_04_BIT, + }, + [IRQ_LPC32XX_GPIO_05] = { + .event_group = &lpc32xx_event_int_regs, + .mask = LPC32XX_CLKPWR_INTSRC_GPIO_05_BIT, + }, + [IRQ_LPC32XX_KEY] = { + .event_group = &lpc32xx_event_int_regs, + .mask = LPC32XX_CLKPWR_INTSRC_KEY_BIT, + }, + [IRQ_LPC32XX_ETHERNET] = { + .event_group = &lpc32xx_event_int_regs, + .mask = LPC32XX_CLKPWR_INTSRC_MAC_BIT, + }, + [IRQ_LPC32XX_USB_OTG_ATX] = { + .event_group = &lpc32xx_event_int_regs, + .mask = LPC32XX_CLKPWR_INTSRC_USBATXINT_BIT, + }, + [IRQ_LPC32XX_USB_HOST] = { + .event_group = &lpc32xx_event_int_regs, + .mask = LPC32XX_CLKPWR_INTSRC_USB_BIT, + }, + [IRQ_LPC32XX_RTC] = { + .event_group = &lpc32xx_event_int_regs, + .mask = LPC32XX_CLKPWR_INTSRC_RTC_BIT, + }, + [IRQ_LPC32XX_MSTIMER] = { + .event_group = &lpc32xx_event_int_regs, + .mask = LPC32XX_CLKPWR_INTSRC_MSTIMER_BIT, + }, + [IRQ_LPC32XX_TS_AUX] = { + .event_group = &lpc32xx_event_int_regs, + .mask = LPC32XX_CLKPWR_INTSRC_TS_AUX_BIT, + }, + [IRQ_LPC32XX_TS_P] = { + .event_group = &lpc32xx_event_int_regs, + .mask = LPC32XX_CLKPWR_INTSRC_TS_P_BIT, + }, + [IRQ_LPC32XX_TS_IRQ] = { + .event_group = &lpc32xx_event_int_regs, + .mask = LPC32XX_CLKPWR_INTSRC_ADC_BIT, + }, +}; + +static void get_controller(unsigned int irq, unsigned int *base, + unsigned int *irqbit) +{ + if (irq < 32) { + *base = LPC32XX_MIC_BASE; + *irqbit = 1 << irq; + } else if (irq < 64) { + *base = LPC32XX_SIC1_BASE; + *irqbit = 1 << (irq - 32); + } else { + *base = LPC32XX_SIC2_BASE; + *irqbit = 1 << (irq - 64); + } +} + +static void lpc32xx_mask_irq(struct irq_data *d) +{ + unsigned int reg, ctrl, mask; + + get_controller(d->hwirq, &ctrl, &mask); + + reg = __raw_readl(LPC32XX_INTC_MASK(ctrl)) & ~mask; + __raw_writel(reg, LPC32XX_INTC_MASK(ctrl)); +} + +static void lpc32xx_unmask_irq(struct irq_data *d) +{ + unsigned int reg, ctrl, mask; + + get_controller(d->hwirq, &ctrl, &mask); + + reg = __raw_readl(LPC32XX_INTC_MASK(ctrl)) | mask; + __raw_writel(reg, LPC32XX_INTC_MASK(ctrl)); +} + +static void lpc32xx_ack_irq(struct irq_data *d) +{ + unsigned int ctrl, mask; + + get_controller(d->hwirq, &ctrl, &mask); + + __raw_writel(mask, LPC32XX_INTC_RAW_STAT(ctrl)); + + /* Also need to clear pending wake event */ + if (lpc32xx_events[d->hwirq].mask != 0) + __raw_writel(lpc32xx_events[d->hwirq].mask, + lpc32xx_events[d->hwirq].event_group->rawstat_reg); +} + +static void __lpc32xx_set_irq_type(unsigned int irq, int use_high_level, + int use_edge) +{ + unsigned int reg, ctrl, mask; + + get_controller(irq, &ctrl, &mask); + + /* Activation level, high or low */ + reg = __raw_readl(LPC32XX_INTC_POLAR(ctrl)); + if (use_high_level) + reg |= mask; + else + reg &= ~mask; + __raw_writel(reg, LPC32XX_INTC_POLAR(ctrl)); + + /* Activation type, edge or level */ + reg = __raw_readl(LPC32XX_INTC_ACT_TYPE(ctrl)); + if (use_edge) + reg |= mask; + else + reg &= ~mask; + __raw_writel(reg, LPC32XX_INTC_ACT_TYPE(ctrl)); + + /* Use same polarity for the wake events */ + if (lpc32xx_events[irq].mask != 0) { + reg = __raw_readl(lpc32xx_events[irq].event_group->edge_reg); + + if (use_high_level) + reg |= lpc32xx_events[irq].mask; + else + reg &= ~lpc32xx_events[irq].mask; + + __raw_writel(reg, lpc32xx_events[irq].event_group->edge_reg); + } +} + +static int lpc32xx_set_irq_type(struct irq_data *d, unsigned int type) +{ + switch (type) { + case IRQ_TYPE_EDGE_RISING: + /* Rising edge sensitive */ + __lpc32xx_set_irq_type(d->hwirq, 1, 1); + __irq_set_handler_locked(d->hwirq, handle_edge_irq); + break; + + case IRQ_TYPE_EDGE_FALLING: + /* Falling edge sensitive */ + __lpc32xx_set_irq_type(d->hwirq, 0, 1); + __irq_set_handler_locked(d->hwirq, handle_edge_irq); + break; + + case IRQ_TYPE_LEVEL_LOW: + /* Low level sensitive */ + __lpc32xx_set_irq_type(d->hwirq, 0, 0); + __irq_set_handler_locked(d->hwirq, handle_level_irq); + break; + + case IRQ_TYPE_LEVEL_HIGH: + /* High level sensitive */ + __lpc32xx_set_irq_type(d->hwirq, 1, 0); + __irq_set_handler_locked(d->hwirq, handle_level_irq); + break; + + /* Other modes are not supported */ + default: + return -EINVAL; + } + + return 0; +} + +static int lpc32xx_irq_wake(struct irq_data *d, unsigned int state) +{ + unsigned long eventreg; + + if (lpc32xx_events[d->hwirq].mask != 0) { + eventreg = __raw_readl(lpc32xx_events[d->hwirq]. + event_group->enab_reg); + + if (state) + eventreg |= lpc32xx_events[d->hwirq].mask; + else { + eventreg &= ~lpc32xx_events[d->hwirq].mask; + + /* + * When disabling the wakeup, clear the latched + * event + */ + __raw_writel(lpc32xx_events[d->hwirq].mask, + lpc32xx_events[d->hwirq]. + event_group->rawstat_reg); + } + + __raw_writel(eventreg, + lpc32xx_events[d->hwirq].event_group->enab_reg); + + return 0; + } + + /* Clear event */ + __raw_writel(lpc32xx_events[d->hwirq].mask, + lpc32xx_events[d->hwirq].event_group->rawstat_reg); + + return -ENODEV; +} + +static void __init lpc32xx_set_default_mappings(unsigned int apr, + unsigned int atr, unsigned int offset) +{ + unsigned int i; + + /* Set activation levels for each interrupt */ + i = 0; + while (i < 32) { + __lpc32xx_set_irq_type(offset + i, ((apr >> i) & 0x1), + ((atr >> i) & 0x1)); + i++; + } +} + +static struct irq_chip lpc32xx_irq_chip = { + .name = "MIC", + .irq_ack = lpc32xx_ack_irq, + .irq_mask = lpc32xx_mask_irq, + .irq_unmask = lpc32xx_unmask_irq, + .irq_set_type = lpc32xx_set_irq_type, + .irq_set_wake = lpc32xx_irq_wake +}; + +static void lpc32xx_sic1_handler(unsigned int irq, struct irq_desc *desc) +{ + unsigned long ints = __raw_readl(LPC32XX_INTC_STAT(LPC32XX_SIC1_BASE)); + + while (ints != 0) { + int irqno = fls(ints) - 1; + + ints &= ~(1 << irqno); + + generic_handle_irq(LPC32XX_SIC1_IRQ(irqno)); + } +} + +static void lpc32xx_sic2_handler(unsigned int irq, struct irq_desc *desc) +{ + unsigned long ints = __raw_readl(LPC32XX_INTC_STAT(LPC32XX_SIC2_BASE)); + + while (ints != 0) { + int irqno = fls(ints) - 1; + + ints &= ~(1 << irqno); + + generic_handle_irq(LPC32XX_SIC2_IRQ(irqno)); + } +} + +static int __init __lpc32xx_mic_of_init(struct device_node *node, + struct device_node *parent) +{ + lpc32xx_mic_np = node; + + return 0; +} + +static const struct of_device_id mic_of_match[] __initconst = { + { .compatible = "nxp,lpc3220-mic", .data = __lpc32xx_mic_of_init }, + { } +}; + +void __init lpc32xx_init_irq(void) +{ + unsigned int i; + + /* Setup MIC */ + __raw_writel(0, LPC32XX_INTC_MASK(LPC32XX_MIC_BASE)); + __raw_writel(MIC_APR_DEFAULT, LPC32XX_INTC_POLAR(LPC32XX_MIC_BASE)); + __raw_writel(MIC_ATR_DEFAULT, LPC32XX_INTC_ACT_TYPE(LPC32XX_MIC_BASE)); + + /* Setup SIC1 */ + __raw_writel(0, LPC32XX_INTC_MASK(LPC32XX_SIC1_BASE)); + __raw_writel(SIC1_APR_DEFAULT, LPC32XX_INTC_POLAR(LPC32XX_SIC1_BASE)); + __raw_writel(SIC1_ATR_DEFAULT, + LPC32XX_INTC_ACT_TYPE(LPC32XX_SIC1_BASE)); + + /* Setup SIC2 */ + __raw_writel(0, LPC32XX_INTC_MASK(LPC32XX_SIC2_BASE)); + __raw_writel(SIC2_APR_DEFAULT, LPC32XX_INTC_POLAR(LPC32XX_SIC2_BASE)); + __raw_writel(SIC2_ATR_DEFAULT, + LPC32XX_INTC_ACT_TYPE(LPC32XX_SIC2_BASE)); + + /* Configure supported IRQ's */ + for (i = 0; i < NR_IRQS; i++) { + irq_set_chip_and_handler(i, &lpc32xx_irq_chip, + handle_level_irq); + set_irq_flags(i, IRQF_VALID); + } + + /* Set default mappings */ + lpc32xx_set_default_mappings(MIC_APR_DEFAULT, MIC_ATR_DEFAULT, 0); + lpc32xx_set_default_mappings(SIC1_APR_DEFAULT, SIC1_ATR_DEFAULT, 32); + lpc32xx_set_default_mappings(SIC2_APR_DEFAULT, SIC2_ATR_DEFAULT, 64); + + /* Initially disable all wake events */ + __raw_writel(0, LPC32XX_CLKPWR_P01_ER); + __raw_writel(0, LPC32XX_CLKPWR_INT_ER); + __raw_writel(0, LPC32XX_CLKPWR_PIN_ER); + + /* + * Default wake activation polarities, all pin sources are low edge + * triggered + */ + __raw_writel(LPC32XX_CLKPWR_INTSRC_TS_P_BIT | + LPC32XX_CLKPWR_INTSRC_MSTIMER_BIT | + LPC32XX_CLKPWR_INTSRC_RTC_BIT, + LPC32XX_CLKPWR_INT_AP); + __raw_writel(0, LPC32XX_CLKPWR_PIN_AP); + + /* Clear latched wake event states */ + __raw_writel(__raw_readl(LPC32XX_CLKPWR_PIN_RS), + LPC32XX_CLKPWR_PIN_RS); + __raw_writel(__raw_readl(LPC32XX_CLKPWR_INT_RS), + LPC32XX_CLKPWR_INT_RS); + + of_irq_init(mic_of_match); + + lpc32xx_mic_domain = irq_domain_add_legacy(lpc32xx_mic_np, NR_IRQS, + 0, 0, &irq_domain_simple_ops, + NULL); + if (!lpc32xx_mic_domain) + panic("Unable to add MIC irq domain\n"); + + /* MIC SUBIRQx interrupts will route handling to the chain handlers */ + irq_set_chained_handler(IRQ_LPC32XX_SUB1IRQ, lpc32xx_sic1_handler); + irq_set_chained_handler(IRQ_LPC32XX_SUB2IRQ, lpc32xx_sic2_handler); +} diff --git a/kernel/arch/arm/mach-lpc32xx/phy3250.c b/kernel/arch/arm/mach-lpc32xx/phy3250.c new file mode 100644 index 000000000..7858d5b6f --- /dev/null +++ b/kernel/arch/arm/mach-lpc32xx/phy3250.c @@ -0,0 +1,267 @@ +/* + * Platform support for LPC32xx SoC + * + * Author: Kevin Wells + * + * Copyright (C) 2012 Roland Stigge + * Copyright (C) 2010 NXP Semiconductors + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include +#include +#include +#include "common.h" + +/* + * Mapped GPIOLIB GPIOs + */ +#define LCD_POWER_GPIO LPC32XX_GPIO(LPC32XX_GPO_P3_GRP, 0) +#define BKL_POWER_GPIO LPC32XX_GPIO(LPC32XX_GPO_P3_GRP, 4) +#define MMC_PWR_ENABLE_GPIO LPC32XX_GPIO(LPC32XX_GPO_P3_GRP, 5) + +/* + * AMBA LCD controller + */ +static struct clcd_panel conn_lcd_panel = { + .mode = { + .name = "QVGA portrait", + .refresh = 60, + .xres = 240, + .yres = 320, + .pixclock = 191828, + .left_margin = 22, + .right_margin = 11, + .upper_margin = 2, + .lower_margin = 1, + .hsync_len = 5, + .vsync_len = 2, + .sync = 0, + .vmode = FB_VMODE_NONINTERLACED, + }, + .width = -1, + .height = -1, + .tim2 = (TIM2_IVS | TIM2_IHS), + .cntl = (CNTL_BGR | CNTL_LCDTFT | CNTL_LCDVCOMP(1) | + CNTL_LCDBPP16_565), + .bpp = 16, +}; +#define PANEL_SIZE (3 * SZ_64K) + +static int lpc32xx_clcd_setup(struct clcd_fb *fb) +{ + dma_addr_t dma; + + fb->fb.screen_base = dma_alloc_writecombine(&fb->dev->dev, + PANEL_SIZE, &dma, GFP_KERNEL); + if (!fb->fb.screen_base) { + printk(KERN_ERR "CLCD: unable to map framebuffer\n"); + return -ENOMEM; + } + + fb->fb.fix.smem_start = dma; + fb->fb.fix.smem_len = PANEL_SIZE; + fb->panel = &conn_lcd_panel; + + if (gpio_request(LCD_POWER_GPIO, "LCD power")) + printk(KERN_ERR "Error requesting gpio %u", + LCD_POWER_GPIO); + else if (gpio_direction_output(LCD_POWER_GPIO, 1)) + printk(KERN_ERR "Error setting gpio %u to output", + LCD_POWER_GPIO); + + if (gpio_request(BKL_POWER_GPIO, "LCD backlight power")) + printk(KERN_ERR "Error requesting gpio %u", + BKL_POWER_GPIO); + else if (gpio_direction_output(BKL_POWER_GPIO, 1)) + printk(KERN_ERR "Error setting gpio %u to output", + BKL_POWER_GPIO); + + return 0; +} + +static int lpc32xx_clcd_mmap(struct clcd_fb *fb, struct vm_area_struct *vma) +{ + return dma_mmap_writecombine(&fb->dev->dev, vma, + fb->fb.screen_base, fb->fb.fix.smem_start, + fb->fb.fix.smem_len); +} + +static void lpc32xx_clcd_remove(struct clcd_fb *fb) +{ + dma_free_writecombine(&fb->dev->dev, fb->fb.fix.smem_len, + fb->fb.screen_base, fb->fb.fix.smem_start); +} + +/* + * On some early LCD modules (1307.0), the backlight logic is inverted. + * For those board variants, swap the disable and enable states for + * BKL_POWER_GPIO. +*/ +static void clcd_disable(struct clcd_fb *fb) +{ + gpio_set_value(BKL_POWER_GPIO, 0); + gpio_set_value(LCD_POWER_GPIO, 0); +} + +static void clcd_enable(struct clcd_fb *fb) +{ + gpio_set_value(BKL_POWER_GPIO, 1); + gpio_set_value(LCD_POWER_GPIO, 1); +} + +static struct clcd_board lpc32xx_clcd_data = { + .name = "Phytec LCD", + .check = clcdfb_check, + .decode = clcdfb_decode, + .disable = clcd_disable, + .enable = clcd_enable, + .setup = lpc32xx_clcd_setup, + .mmap = lpc32xx_clcd_mmap, + .remove = lpc32xx_clcd_remove, +}; + +static struct pl08x_channel_data pl08x_slave_channels[] = { + { + .bus_id = "nand-slc", + .min_signal = 1, /* SLC NAND Flash */ + .max_signal = 1, + .periph_buses = PL08X_AHB1, + }, + { + .bus_id = "nand-mlc", + .min_signal = 12, /* MLC NAND Flash */ + .max_signal = 12, + .periph_buses = PL08X_AHB1, + }, +}; + +static int pl08x_get_signal(const struct pl08x_channel_data *cd) +{ + return cd->min_signal; +} + +static void pl08x_put_signal(const struct pl08x_channel_data *cd, int ch) +{ +} + +static struct pl08x_platform_data pl08x_pd = { + .slave_channels = &pl08x_slave_channels[0], + .num_slave_channels = ARRAY_SIZE(pl08x_slave_channels), + .get_xfer_signal = pl08x_get_signal, + .put_xfer_signal = pl08x_put_signal, + .lli_buses = PL08X_AHB1, + .mem_buses = PL08X_AHB1, +}; + +static int mmc_handle_ios(struct device *dev, struct mmc_ios *ios) +{ + /* Only on and off are supported */ + if (ios->power_mode == MMC_POWER_OFF) + gpio_set_value(MMC_PWR_ENABLE_GPIO, 0); + else + gpio_set_value(MMC_PWR_ENABLE_GPIO, 1); + return 0; +} + +static struct mmci_platform_data lpc32xx_mmci_data = { + .ocr_mask = MMC_VDD_30_31 | MMC_VDD_31_32 | + MMC_VDD_32_33 | MMC_VDD_33_34, + .ios_handler = mmc_handle_ios, +}; + +static struct lpc32xx_slc_platform_data lpc32xx_slc_data = { + .dma_filter = pl08x_filter_id, +}; + +static struct lpc32xx_mlc_platform_data lpc32xx_mlc_data = { + .dma_filter = pl08x_filter_id, +}; + +static const struct of_dev_auxdata lpc32xx_auxdata_lookup[] __initconst = { + OF_DEV_AUXDATA("arm,pl022", 0x20084000, "dev:ssp0", NULL), + OF_DEV_AUXDATA("arm,pl022", 0x2008C000, "dev:ssp1", NULL), + OF_DEV_AUXDATA("arm,pl110", 0x31040000, "dev:clcd", &lpc32xx_clcd_data), + OF_DEV_AUXDATA("arm,pl080", 0x31000000, "pl08xdmac", &pl08x_pd), + OF_DEV_AUXDATA("arm,pl18x", 0x20098000, "20098000.sd", + &lpc32xx_mmci_data), + OF_DEV_AUXDATA("nxp,lpc3220-slc", 0x20020000, "20020000.flash", + &lpc32xx_slc_data), + OF_DEV_AUXDATA("nxp,lpc3220-mlc", 0x200a8000, "200a8000.flash", + &lpc32xx_mlc_data), + { } +}; + +static void __init lpc3250_machine_init(void) +{ + u32 tmp; + + /* Setup LCD muxing to RGB565 */ + tmp = __raw_readl(LPC32XX_CLKPWR_LCDCLK_CTRL) & + ~(LPC32XX_CLKPWR_LCDCTRL_LCDTYPE_MSK | + LPC32XX_CLKPWR_LCDCTRL_PSCALE_MSK); + tmp |= LPC32XX_CLKPWR_LCDCTRL_LCDTYPE_TFT16; + __raw_writel(tmp, LPC32XX_CLKPWR_LCDCLK_CTRL); + + lpc32xx_serial_init(); + + /* Test clock needed for UDA1380 initial init */ + __raw_writel(LPC32XX_CLKPWR_TESTCLK2_SEL_MOSC | + LPC32XX_CLKPWR_TESTCLK_TESTCLK2_EN, + LPC32XX_CLKPWR_TEST_CLK_SEL); + + of_platform_populate(NULL, of_default_bus_match_table, + lpc32xx_auxdata_lookup, NULL); +} + +static char const *lpc32xx_dt_compat[] __initdata = { + "nxp,lpc3220", + "nxp,lpc3230", + "nxp,lpc3240", + "nxp,lpc3250", + NULL +}; + +DT_MACHINE_START(LPC32XX_DT, "LPC32XX SoC (Flattened Device Tree)") + .atag_offset = 0x100, + .map_io = lpc32xx_map_io, + .init_irq = lpc32xx_init_irq, + .init_time = lpc32xx_timer_init, + .init_machine = lpc3250_machine_init, + .dt_compat = lpc32xx_dt_compat, + .restart = lpc23xx_restart, +MACHINE_END diff --git a/kernel/arch/arm/mach-lpc32xx/pm.c b/kernel/arch/arm/mach-lpc32xx/pm.c new file mode 100644 index 000000000..207e81275 --- /dev/null +++ b/kernel/arch/arm/mach-lpc32xx/pm.c @@ -0,0 +1,146 @@ +/* + * arch/arm/mach-lpc32xx/pm.c + * + * Original authors: Vitaly Wool, Dmitry Chigirev + * Modified by Kevin Wells + * + * 2005 (c) MontaVista Software, Inc. This file is licensed under + * the terms of the GNU General Public License version 2. This program + * is licensed "as is" without any warranty of any kind, whether express + * or implied. + */ + +/* + * LPC32XX CPU and system power management + * + * The LPC32XX has three CPU modes for controlling system power: run, + * direct-run, and halt modes. When switching between halt and run modes, + * the CPU transistions through direct-run mode. For Linux, direct-run + * mode is not used in normal operation. Halt mode is used when the + * system is fully suspended. + * + * Run mode: + * The ARM CPU clock (HCLK_PLL), HCLK bus clock, and PCLK bus clocks are + * derived from the HCLK PLL. The HCLK and PCLK bus rates are divided from + * the HCLK_PLL rate. Linux runs in this mode. + * + * Direct-run mode: + * The ARM CPU clock, HCLK bus clock, and PCLK bus clocks are driven from + * SYSCLK. SYSCLK is usually around 13MHz, but may vary based on SYSCLK + * source or the frequency of the main oscillator. In this mode, the + * HCLK_PLL can be safely enabled, changed, or disabled. + * + * Halt mode: + * SYSCLK is gated off and the CPU and system clocks are halted. + * Peripherals based on the 32KHz oscillator clock (ie, RTC, touch, + * key scanner, etc.) still operate if enabled. In this state, an enabled + * system event (ie, GPIO state change, RTC match, key press, etc.) will + * wake the system up back into direct-run mode. + * + * DRAM refresh + * DRAM clocking and refresh are slightly different for systems with DDR + * DRAM or regular SDRAM devices. If SDRAM is used in the system, the + * SDRAM will still be accessible in direct-run mode. In DDR based systems, + * a transition to direct-run mode will stop all DDR accesses (no clocks). + * Because of this, the code to switch power modes and the code to enter + * and exit DRAM self-refresh modes must not be executed in DRAM. A small + * section of IRAM is used instead for this. + * + * Suspend is handled with the following logic: + * Backup a small area of IRAM used for the suspend code + * Copy suspend code to IRAM + * Transfer control to code in IRAM + * Places DRAMs in self-refresh mode + * Enter direct-run mode + * Save state of HCLK_PLL PLL + * Disable HCLK_PLL PLL + * Enter halt mode - CPU and buses will stop + * System enters direct-run mode when an enabled event occurs + * HCLK PLL state is restored + * Run mode is entered + * DRAMS are placed back into normal mode + * Code execution returns from IRAM + * IRAM code are used for suspend is restored + * Suspend mode is exited + */ + +#include +#include +#include + +#include + +#include +#include +#include "common.h" +#include "clock.h" + +#define TEMP_IRAM_AREA IO_ADDRESS(LPC32XX_IRAM_BASE) + +/* + * Both STANDBY and MEM suspend states are handled the same with no + * loss of CPU or memory state + */ +static int lpc32xx_pm_enter(suspend_state_t state) +{ + int (*lpc32xx_suspend_ptr) (void); + void *iram_swap_area; + + /* Allocate some space for temporary IRAM storage */ + iram_swap_area = kmalloc(lpc32xx_sys_suspend_sz, GFP_KERNEL); + if (!iram_swap_area) { + printk(KERN_ERR + "PM Suspend: cannot allocate memory to save portion " + "of SRAM\n"); + return -ENOMEM; + } + + /* Backup a small area of IRAM used for the suspend code */ + memcpy(iram_swap_area, (void *) TEMP_IRAM_AREA, + lpc32xx_sys_suspend_sz); + + /* + * Copy code to suspend system into IRAM. The suspend code + * needs to run from IRAM as DRAM may no longer be available + * when the PLL is stopped. + */ + memcpy((void *) TEMP_IRAM_AREA, &lpc32xx_sys_suspend, + lpc32xx_sys_suspend_sz); + flush_icache_range((unsigned long)TEMP_IRAM_AREA, + (unsigned long)(TEMP_IRAM_AREA) + lpc32xx_sys_suspend_sz); + + /* Transfer to suspend code in IRAM */ + lpc32xx_suspend_ptr = (void *) TEMP_IRAM_AREA; + flush_cache_all(); + (void) lpc32xx_suspend_ptr(); + + /* Restore original IRAM contents */ + memcpy((void *) TEMP_IRAM_AREA, iram_swap_area, + lpc32xx_sys_suspend_sz); + + kfree(iram_swap_area); + + return 0; +} + +static const struct platform_suspend_ops lpc32xx_pm_ops = { + .valid = suspend_valid_only_mem, + .enter = lpc32xx_pm_enter, +}; + +#define EMC_DYN_MEM_CTRL_OFS 0x20 +#define EMC_SRMMC (1 << 3) +#define EMC_CTRL_REG io_p2v(LPC32XX_EMC_BASE + EMC_DYN_MEM_CTRL_OFS) +static int __init lpc32xx_pm_init(void) +{ + /* + * Setup SDRAM self-refresh clock to automatically disable o + * start of self-refresh. This only needs to be done once. + */ + __raw_writel(__raw_readl(EMC_CTRL_REG) | EMC_SRMMC, EMC_CTRL_REG); + + suspend_set_ops(&lpc32xx_pm_ops); + + return 0; +} +arch_initcall(lpc32xx_pm_init); diff --git a/kernel/arch/arm/mach-lpc32xx/serial.c b/kernel/arch/arm/mach-lpc32xx/serial.c new file mode 100644 index 000000000..05621a29f --- /dev/null +++ b/kernel/arch/arm/mach-lpc32xx/serial.c @@ -0,0 +1,130 @@ +/* + * arch/arm/mach-lpc32xx/serial.c + * + * Author: Kevin Wells + * + * Copyright (C) 2010 NXP Semiconductors + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include "common.h" + +#define LPC32XX_SUART_FIFO_SIZE 64 + +struct uartinit { + char *uart_ck_name; + u32 ck_mode_mask; + void __iomem *pdiv_clk_reg; + resource_size_t mapbase; +}; + +static struct uartinit uartinit_data[] __initdata = { + { + .uart_ck_name = "uart5_ck", + .ck_mode_mask = + LPC32XX_UART_CLKMODE_LOAD(LPC32XX_UART_CLKMODE_ON, 5), + .pdiv_clk_reg = LPC32XX_CLKPWR_UART5_CLK_CTRL, + .mapbase = LPC32XX_UART5_BASE, + }, + { + .uart_ck_name = "uart3_ck", + .ck_mode_mask = + LPC32XX_UART_CLKMODE_LOAD(LPC32XX_UART_CLKMODE_ON, 3), + .pdiv_clk_reg = LPC32XX_CLKPWR_UART3_CLK_CTRL, + .mapbase = LPC32XX_UART3_BASE, + }, + { + .uart_ck_name = "uart4_ck", + .ck_mode_mask = + LPC32XX_UART_CLKMODE_LOAD(LPC32XX_UART_CLKMODE_ON, 4), + .pdiv_clk_reg = LPC32XX_CLKPWR_UART4_CLK_CTRL, + .mapbase = LPC32XX_UART4_BASE, + }, + { + .uart_ck_name = "uart6_ck", + .ck_mode_mask = + LPC32XX_UART_CLKMODE_LOAD(LPC32XX_UART_CLKMODE_ON, 6), + .pdiv_clk_reg = LPC32XX_CLKPWR_UART6_CLK_CTRL, + .mapbase = LPC32XX_UART6_BASE, + }, +}; + +void __init lpc32xx_serial_init(void) +{ + u32 tmp, clkmodes = 0; + struct clk *clk; + unsigned int puart; + int i, j; + + /* UART clocks are off, let clock driver manage them */ + __raw_writel(0, LPC32XX_CLKPWR_UART_CLK_CTRL); + + for (i = 0; i < ARRAY_SIZE(uartinit_data); i++) { + clk = clk_get(NULL, uartinit_data[i].uart_ck_name); + if (!IS_ERR(clk)) { + clk_enable(clk); + } + + /* Setup UART clock modes for all UARTs, disable autoclock */ + clkmodes |= uartinit_data[i].ck_mode_mask; + + /* pre-UART clock divider set to 1 */ + __raw_writel(0x0101, uartinit_data[i].pdiv_clk_reg); + + /* + * Force a flush of the RX FIFOs to work around a + * HW bug + */ + puart = uartinit_data[i].mapbase; + __raw_writel(0xC1, LPC32XX_UART_IIR_FCR(puart)); + __raw_writel(0x00, LPC32XX_UART_DLL_FIFO(puart)); + j = LPC32XX_SUART_FIFO_SIZE; + while (j--) + tmp = __raw_readl( + LPC32XX_UART_DLL_FIFO(puart)); + __raw_writel(0, LPC32XX_UART_IIR_FCR(puart)); + } + + /* This needs to be done after all UART clocks are setup */ + __raw_writel(clkmodes, LPC32XX_UARTCTL_CLKMODE); + for (i = 0; i < ARRAY_SIZE(uartinit_data); i++) { + /* Force a flush of the RX FIFOs to work around a HW bug */ + puart = uartinit_data[i].mapbase; + __raw_writel(0xC1, LPC32XX_UART_IIR_FCR(puart)); + __raw_writel(0x00, LPC32XX_UART_DLL_FIFO(puart)); + j = LPC32XX_SUART_FIFO_SIZE; + while (j--) + tmp = __raw_readl(LPC32XX_UART_DLL_FIFO(puart)); + __raw_writel(0, LPC32XX_UART_IIR_FCR(puart)); + } + + /* Disable IrDA pulsing support on UART6 */ + tmp = __raw_readl(LPC32XX_UARTCTL_CTRL); + tmp |= LPC32XX_UART_UART6_IRDAMOD_BYPASS; + __raw_writel(tmp, LPC32XX_UARTCTL_CTRL); + + /* Disable UART5->USB transparent mode or USB won't work */ + tmp = __raw_readl(LPC32XX_UARTCTL_CTRL); + tmp &= ~LPC32XX_UART_U5_ROUTE_TO_USB; + __raw_writel(tmp, LPC32XX_UARTCTL_CTRL); +} diff --git a/kernel/arch/arm/mach-lpc32xx/suspend.S b/kernel/arch/arm/mach-lpc32xx/suspend.S new file mode 100644 index 000000000..374f9f07f --- /dev/null +++ b/kernel/arch/arm/mach-lpc32xx/suspend.S @@ -0,0 +1,151 @@ +/* + * arch/arm/mach-lpc32xx/suspend.S + * + * Original authors: Dmitry Chigirev, Vitaly Wool + * Modified by Kevin Wells + * + * 2005 (c) MontaVista Software, Inc. This file is licensed under + * the terms of the GNU General Public License version 2. This program + * is licensed "as is" without any warranty of any kind, whether express + * or implied. + */ +#include +#include +#include +#include + +/* Using named register defines makes the code easier to follow */ +#define WORK1_REG r0 +#define WORK2_REG r1 +#define SAVED_HCLK_DIV_REG r2 +#define SAVED_HCLK_PLL_REG r3 +#define SAVED_DRAM_CLKCTRL_REG r4 +#define SAVED_PWR_CTRL_REG r5 +#define CLKPWRBASE_REG r6 +#define EMCBASE_REG r7 + +#define LPC32XX_EMC_STATUS_OFFS 0x04 +#define LPC32XX_EMC_STATUS_BUSY 0x1 +#define LPC32XX_EMC_STATUS_SELF_RFSH 0x4 + +#define LPC32XX_CLKPWR_PWR_CTRL_OFFS 0x44 +#define LPC32XX_CLKPWR_HCLK_DIV_OFFS 0x40 +#define LPC32XX_CLKPWR_HCLKPLL_CTRL_OFFS 0x58 + +#define CLKPWR_PCLK_DIV_MASK 0xFFFFFE7F + + .text + +ENTRY(lpc32xx_sys_suspend) + @ Save a copy of the used registers in IRAM, r0 is corrupted + adr r0, tmp_stack_end + stmfd r0!, {r3 - r7, sp, lr} + + @ Load a few common register addresses + adr WORK1_REG, reg_bases + ldr CLKPWRBASE_REG, [WORK1_REG, #0] + ldr EMCBASE_REG, [WORK1_REG, #4] + + ldr SAVED_PWR_CTRL_REG, [CLKPWRBASE_REG,\ + #LPC32XX_CLKPWR_PWR_CTRL_OFFS] + orr WORK1_REG, SAVED_PWR_CTRL_REG, #LPC32XX_CLKPWR_SDRAM_SELF_RFSH + + @ Wait for SDRAM busy status to go busy and then idle + @ This guarantees a small windows where DRAM isn't busy +1: + ldr WORK2_REG, [EMCBASE_REG, #LPC32XX_EMC_STATUS_OFFS] + and WORK2_REG, WORK2_REG, #LPC32XX_EMC_STATUS_BUSY + cmp WORK2_REG, #LPC32XX_EMC_STATUS_BUSY + bne 1b @ Branch while idle +2: + ldr WORK2_REG, [EMCBASE_REG, #LPC32XX_EMC_STATUS_OFFS] + and WORK2_REG, WORK2_REG, #LPC32XX_EMC_STATUS_BUSY + cmp WORK2_REG, #LPC32XX_EMC_STATUS_BUSY + beq 2b @ Branch until idle + + @ Setup self-refresh with support for manual exit of + @ self-refresh mode + str WORK1_REG, [CLKPWRBASE_REG, #LPC32XX_CLKPWR_PWR_CTRL_OFFS] + orr WORK2_REG, WORK1_REG, #LPC32XX_CLKPWR_UPD_SDRAM_SELF_RFSH + str WORK2_REG, [CLKPWRBASE_REG, #LPC32XX_CLKPWR_PWR_CTRL_OFFS] + str WORK1_REG, [CLKPWRBASE_REG, #LPC32XX_CLKPWR_PWR_CTRL_OFFS] + + @ Wait for self-refresh acknowledge, clocks to the DRAM device + @ will automatically stop on start of self-refresh +3: + ldr WORK2_REG, [EMCBASE_REG, #LPC32XX_EMC_STATUS_OFFS] + and WORK2_REG, WORK2_REG, #LPC32XX_EMC_STATUS_SELF_RFSH + cmp WORK2_REG, #LPC32XX_EMC_STATUS_SELF_RFSH + bne 3b @ Branch until self-refresh mode starts + + @ Enter direct-run mode from run mode + bic WORK1_REG, WORK1_REG, #LPC32XX_CLKPWR_SELECT_RUN_MODE + str WORK1_REG, [CLKPWRBASE_REG, #LPC32XX_CLKPWR_PWR_CTRL_OFFS] + + @ Safe disable of DRAM clock in EMC block, prevents DDR sync + @ issues on restart + ldr SAVED_HCLK_DIV_REG, [CLKPWRBASE_REG,\ + #LPC32XX_CLKPWR_HCLK_DIV_OFFS] + and WORK2_REG, SAVED_HCLK_DIV_REG, #CLKPWR_PCLK_DIV_MASK + str WORK2_REG, [CLKPWRBASE_REG, #LPC32XX_CLKPWR_HCLK_DIV_OFFS] + + @ Save HCLK PLL state and disable HCLK PLL + ldr SAVED_HCLK_PLL_REG, [CLKPWRBASE_REG,\ + #LPC32XX_CLKPWR_HCLKPLL_CTRL_OFFS] + bic WORK2_REG, SAVED_HCLK_PLL_REG, #LPC32XX_CLKPWR_HCLKPLL_POWER_UP + str WORK2_REG, [CLKPWRBASE_REG, #LPC32XX_CLKPWR_HCLKPLL_CTRL_OFFS] + + @ Enter stop mode until an enabled event occurs + orr WORK1_REG, WORK1_REG, #LPC32XX_CLKPWR_STOP_MODE_CTRL + str WORK1_REG, [CLKPWRBASE_REG, #LPC32XX_CLKPWR_PWR_CTRL_OFFS] + .rept 9 + nop + .endr + + @ Clear stop status + bic WORK1_REG, WORK1_REG, #LPC32XX_CLKPWR_STOP_MODE_CTRL + + @ Restore original HCLK PLL value and wait for PLL lock + str SAVED_HCLK_PLL_REG, [CLKPWRBASE_REG,\ + #LPC32XX_CLKPWR_HCLKPLL_CTRL_OFFS] +4: + ldr WORK2_REG, [CLKPWRBASE_REG, #LPC32XX_CLKPWR_HCLKPLL_CTRL_OFFS] + and WORK2_REG, WORK2_REG, #LPC32XX_CLKPWR_HCLKPLL_PLL_STS + bne 4b + + @ Re-enter run mode with self-refresh flag cleared, but no DRAM + @ update yet. DRAM is still in self-refresh + str SAVED_PWR_CTRL_REG, [CLKPWRBASE_REG,\ + #LPC32XX_CLKPWR_PWR_CTRL_OFFS] + + @ Restore original DRAM clock mode to restore DRAM clocks + str SAVED_HCLK_DIV_REG, [CLKPWRBASE_REG,\ + #LPC32XX_CLKPWR_HCLK_DIV_OFFS] + + @ Clear self-refresh mode + orr WORK1_REG, SAVED_PWR_CTRL_REG,\ + #LPC32XX_CLKPWR_UPD_SDRAM_SELF_RFSH + str WORK1_REG, [CLKPWRBASE_REG, #LPC32XX_CLKPWR_PWR_CTRL_OFFS] + str SAVED_PWR_CTRL_REG, [CLKPWRBASE_REG,\ + #LPC32XX_CLKPWR_PWR_CTRL_OFFS] + + @ Wait for EMC to clear self-refresh mode +5: + ldr WORK2_REG, [EMCBASE_REG, #LPC32XX_EMC_STATUS_OFFS] + and WORK2_REG, WORK2_REG, #LPC32XX_EMC_STATUS_SELF_RFSH + bne 5b @ Branch until self-refresh has exited + + @ restore regs and return + adr r0, tmp_stack + ldmfd r0!, {r3 - r7, sp, pc} + +reg_bases: + .long IO_ADDRESS(LPC32XX_CLK_PM_BASE) + .long IO_ADDRESS(LPC32XX_EMC_BASE) + +tmp_stack: + .long 0, 0, 0, 0, 0, 0, 0 +tmp_stack_end: + +ENTRY(lpc32xx_sys_suspend_sz) + .word . - lpc32xx_sys_suspend diff --git a/kernel/arch/arm/mach-lpc32xx/timer.c b/kernel/arch/arm/mach-lpc32xx/timer.c new file mode 100644 index 000000000..4e5837299 --- /dev/null +++ b/kernel/arch/arm/mach-lpc32xx/timer.c @@ -0,0 +1,156 @@ +/* + * arch/arm/mach-lpc32xx/timer.c + * + * Author: Kevin Wells + * + * Copyright (C) 2009 - 2010 NXP Semiconductors + * Copyright (C) 2009 Fontys University of Applied Sciences, Eindhoven + * Ed Schouten + * Laurens Timmermans + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include + +#include + +#include +#include +#include "common.h" + +static int lpc32xx_clkevt_next_event(unsigned long delta, + struct clock_event_device *dev) +{ + __raw_writel(LPC32XX_TIMER_CNTR_TCR_RESET, + LPC32XX_TIMER_TCR(LPC32XX_TIMER0_BASE)); + __raw_writel(delta, LPC32XX_TIMER_PR(LPC32XX_TIMER0_BASE)); + __raw_writel(LPC32XX_TIMER_CNTR_TCR_EN, + LPC32XX_TIMER_TCR(LPC32XX_TIMER0_BASE)); + + return 0; +} + +static void lpc32xx_clkevt_mode(enum clock_event_mode mode, + struct clock_event_device *dev) +{ + switch (mode) { + case CLOCK_EVT_MODE_PERIODIC: + WARN_ON(1); + break; + + case CLOCK_EVT_MODE_ONESHOT: + case CLOCK_EVT_MODE_SHUTDOWN: + /* + * Disable the timer. When using oneshot, we must also + * disable the timer to wait for the first call to + * set_next_event(). + */ + __raw_writel(0, LPC32XX_TIMER_TCR(LPC32XX_TIMER0_BASE)); + break; + + case CLOCK_EVT_MODE_UNUSED: + case CLOCK_EVT_MODE_RESUME: + break; + } +} + +static struct clock_event_device lpc32xx_clkevt = { + .name = "lpc32xx_clkevt", + .features = CLOCK_EVT_FEAT_ONESHOT, + .rating = 300, + .set_next_event = lpc32xx_clkevt_next_event, + .set_mode = lpc32xx_clkevt_mode, +}; + +static irqreturn_t lpc32xx_timer_interrupt(int irq, void *dev_id) +{ + struct clock_event_device *evt = &lpc32xx_clkevt; + + /* Clear match */ + __raw_writel(LPC32XX_TIMER_CNTR_MTCH_BIT(0), + LPC32XX_TIMER_IR(LPC32XX_TIMER0_BASE)); + + evt->event_handler(evt); + + return IRQ_HANDLED; +} + +static struct irqaction lpc32xx_timer_irq = { + .name = "LPC32XX Timer Tick", + .flags = IRQF_TIMER | IRQF_IRQPOLL, + .handler = lpc32xx_timer_interrupt, +}; + +/* + * The clock management driver isn't initialized at this point, so the + * clocks need to be enabled here manually and then tagged as used in + * the clock driver initialization + */ +void __init lpc32xx_timer_init(void) +{ + u32 clkrate, pllreg; + + /* Enable timer clock */ + __raw_writel(LPC32XX_CLKPWR_TMRPWMCLK_TIMER0_EN | + LPC32XX_CLKPWR_TMRPWMCLK_TIMER1_EN, + LPC32XX_CLKPWR_TIMERS_PWMS_CLK_CTRL_1); + + /* + * The clock driver isn't initialized at this point. So determine if + * the SYSCLK is driven from the PLL397 or main oscillator and then use + * it to compute the PLL frequency and the PCLK divider to get the base + * timer rates. This rate is needed to compute the tick rate. + */ + if (clk_is_sysclk_mainosc() != 0) + clkrate = LPC32XX_MAIN_OSC_FREQ; + else + clkrate = 397 * LPC32XX_CLOCK_OSC_FREQ; + + /* Get ARM HCLKPLL register and convert it into a frequency */ + pllreg = __raw_readl(LPC32XX_CLKPWR_HCLKPLL_CTRL) & 0x1FFFF; + clkrate = clk_get_pllrate_from_reg(clkrate, pllreg); + + /* Get PCLK divider and divide ARM PLL clock by it to get timer rate */ + clkrate = clkrate / clk_get_pclk_div(); + + /* Initial timer setup */ + __raw_writel(0, LPC32XX_TIMER_TCR(LPC32XX_TIMER0_BASE)); + __raw_writel(LPC32XX_TIMER_CNTR_MTCH_BIT(0), + LPC32XX_TIMER_IR(LPC32XX_TIMER0_BASE)); + __raw_writel(1, LPC32XX_TIMER_MR0(LPC32XX_TIMER0_BASE)); + __raw_writel(LPC32XX_TIMER_CNTR_MCR_MTCH(0) | + LPC32XX_TIMER_CNTR_MCR_STOP(0) | + LPC32XX_TIMER_CNTR_MCR_RESET(0), + LPC32XX_TIMER_MCR(LPC32XX_TIMER0_BASE)); + + /* Setup tick interrupt */ + setup_irq(IRQ_LPC32XX_TIMER0, &lpc32xx_timer_irq); + + /* Setup the clockevent structure. */ + lpc32xx_clkevt.cpumask = cpumask_of(0); + clockevents_config_and_register(&lpc32xx_clkevt, clkrate, 1, -1); + + /* Use timer1 as clock source. */ + __raw_writel(LPC32XX_TIMER_CNTR_TCR_RESET, + LPC32XX_TIMER_TCR(LPC32XX_TIMER1_BASE)); + __raw_writel(0, LPC32XX_TIMER_PR(LPC32XX_TIMER1_BASE)); + __raw_writel(0, LPC32XX_TIMER_MCR(LPC32XX_TIMER1_BASE)); + __raw_writel(LPC32XX_TIMER_CNTR_TCR_EN, + LPC32XX_TIMER_TCR(LPC32XX_TIMER1_BASE)); + + clocksource_mmio_init(LPC32XX_TIMER_TC(LPC32XX_TIMER1_BASE), + "lpc32xx_clksrc", clkrate, 300, 32, clocksource_mmio_readl_up); +} -- cgit 1.2.3-korg