diff options
Diffstat (limited to 'kernel/arch/arm/mach-omap2/io.c')
| -rw-r--r-- | kernel/arch/arm/mach-omap2/io.c | 745 |
1 files changed, 745 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-omap2/io.c b/kernel/arch/arm/mach-omap2/io.c new file mode 100644 index 000000000..820dde8b5 --- /dev/null +++ b/kernel/arch/arm/mach-omap2/io.c @@ -0,0 +1,745 @@ +/* + * linux/arch/arm/mach-omap2/io.c + * + * OMAP2 I/O mapping code + * + * Copyright (C) 2005 Nokia Corporation + * Copyright (C) 2007-2009 Texas Instruments + * + * Author: + * Juha Yrjola <juha.yrjola@nokia.com> + * Syed Khasim <x0khasim@ti.com> + * + * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/clk.h> + +#include <asm/tlb.h> +#include <asm/mach/map.h> + +#include <linux/omap-dma.h> + +#include "omap_hwmod.h" +#include "soc.h" +#include "iomap.h" +#include "voltage.h" +#include "powerdomain.h" +#include "clockdomain.h" +#include "common.h" +#include "clock.h" +#include "clock2xxx.h" +#include "clock3xxx.h" +#include "clock44xx.h" +#include "omap-pm.h" +#include "sdrc.h" +#include "control.h" +#include "serial.h" +#include "sram.h" +#include "cm2xxx.h" +#include "cm3xxx.h" +#include "cm33xx.h" +#include "cm44xx.h" +#include "prm.h" +#include "cm.h" +#include "prcm_mpu44xx.h" +#include "prminst44xx.h" +#include "prm2xxx.h" +#include "prm3xxx.h" +#include "prm33xx.h" +#include "prm44xx.h" +#include "opp2xxx.h" + +/* + * omap_clk_soc_init: points to a function that does the SoC-specific + * clock initializations + */ +static int (*omap_clk_soc_init)(void); + +/* + * The machine specific code may provide the extra mapping besides the + * default mapping provided here. + */ + +#if defined(CONFIG_SOC_OMAP2420) || defined(CONFIG_SOC_OMAP2430) +static struct map_desc omap24xx_io_desc[] __initdata = { + { + .virtual = L3_24XX_VIRT, + .pfn = __phys_to_pfn(L3_24XX_PHYS), + .length = L3_24XX_SIZE, + .type = MT_DEVICE + }, + { + .virtual = L4_24XX_VIRT, + .pfn = __phys_to_pfn(L4_24XX_PHYS), + .length = L4_24XX_SIZE, + .type = MT_DEVICE + }, +}; + +#ifdef CONFIG_SOC_OMAP2420 +static struct map_desc omap242x_io_desc[] __initdata = { + { + .virtual = DSP_MEM_2420_VIRT, + .pfn = __phys_to_pfn(DSP_MEM_2420_PHYS), + .length = DSP_MEM_2420_SIZE, + .type = MT_DEVICE + }, + { + .virtual = DSP_IPI_2420_VIRT, + .pfn = __phys_to_pfn(DSP_IPI_2420_PHYS), + .length = DSP_IPI_2420_SIZE, + .type = MT_DEVICE + }, + { + .virtual = DSP_MMU_2420_VIRT, + .pfn = __phys_to_pfn(DSP_MMU_2420_PHYS), + .length = DSP_MMU_2420_SIZE, + .type = MT_DEVICE + }, +}; + +#endif + +#ifdef CONFIG_SOC_OMAP2430 +static struct map_desc omap243x_io_desc[] __initdata = { + { + .virtual = L4_WK_243X_VIRT, + .pfn = __phys_to_pfn(L4_WK_243X_PHYS), + .length = L4_WK_243X_SIZE, + .type = MT_DEVICE + }, + { + .virtual = OMAP243X_GPMC_VIRT, + .pfn = __phys_to_pfn(OMAP243X_GPMC_PHYS), + .length = OMAP243X_GPMC_SIZE, + .type = MT_DEVICE + }, + { + .virtual = OMAP243X_SDRC_VIRT, + .pfn = __phys_to_pfn(OMAP243X_SDRC_PHYS), + .length = OMAP243X_SDRC_SIZE, + .type = MT_DEVICE + }, + { + .virtual = OMAP243X_SMS_VIRT, + .pfn = __phys_to_pfn(OMAP243X_SMS_PHYS), + .length = OMAP243X_SMS_SIZE, + .type = MT_DEVICE + }, +}; +#endif +#endif + +#ifdef CONFIG_ARCH_OMAP3 +static struct map_desc omap34xx_io_desc[] __initdata = { + { + .virtual = L3_34XX_VIRT, + .pfn = __phys_to_pfn(L3_34XX_PHYS), + .length = L3_34XX_SIZE, + .type = MT_DEVICE + }, + { + .virtual = L4_34XX_VIRT, + .pfn = __phys_to_pfn(L4_34XX_PHYS), + .length = L4_34XX_SIZE, + .type = MT_DEVICE + }, + { + .virtual = OMAP34XX_GPMC_VIRT, + .pfn = __phys_to_pfn(OMAP34XX_GPMC_PHYS), + .length = OMAP34XX_GPMC_SIZE, + .type = MT_DEVICE + }, + { + .virtual = OMAP343X_SMS_VIRT, + .pfn = __phys_to_pfn(OMAP343X_SMS_PHYS), + .length = OMAP343X_SMS_SIZE, + .type = MT_DEVICE + }, + { + .virtual = OMAP343X_SDRC_VIRT, + .pfn = __phys_to_pfn(OMAP343X_SDRC_PHYS), + .length = OMAP343X_SDRC_SIZE, + .type = MT_DEVICE + }, + { + .virtual = L4_PER_34XX_VIRT, + .pfn = __phys_to_pfn(L4_PER_34XX_PHYS), + .length = L4_PER_34XX_SIZE, + .type = MT_DEVICE + }, + { + .virtual = L4_EMU_34XX_VIRT, + .pfn = __phys_to_pfn(L4_EMU_34XX_PHYS), + .length = L4_EMU_34XX_SIZE, + .type = MT_DEVICE + }, +}; +#endif + +#ifdef CONFIG_SOC_TI81XX +static struct map_desc omapti81xx_io_desc[] __initdata = { + { + .virtual = L4_34XX_VIRT, + .pfn = __phys_to_pfn(L4_34XX_PHYS), + .length = L4_34XX_SIZE, + .type = MT_DEVICE + } +}; +#endif + +#if defined(CONFIG_SOC_AM33XX) || defined(CONFIG_SOC_AM43XX) +static struct map_desc omapam33xx_io_desc[] __initdata = { + { + .virtual = L4_34XX_VIRT, + .pfn = __phys_to_pfn(L4_34XX_PHYS), + .length = L4_34XX_SIZE, + .type = MT_DEVICE + }, + { + .virtual = L4_WK_AM33XX_VIRT, + .pfn = __phys_to_pfn(L4_WK_AM33XX_PHYS), + .length = L4_WK_AM33XX_SIZE, + .type = MT_DEVICE + } +}; +#endif + +#ifdef CONFIG_ARCH_OMAP4 +static struct map_desc omap44xx_io_desc[] __initdata = { + { + .virtual = L3_44XX_VIRT, + .pfn = __phys_to_pfn(L3_44XX_PHYS), + .length = L3_44XX_SIZE, + .type = MT_DEVICE, + }, + { + .virtual = L4_44XX_VIRT, + .pfn = __phys_to_pfn(L4_44XX_PHYS), + .length = L4_44XX_SIZE, + .type = MT_DEVICE, + }, + { + .virtual = L4_PER_44XX_VIRT, + .pfn = __phys_to_pfn(L4_PER_44XX_PHYS), + .length = L4_PER_44XX_SIZE, + .type = MT_DEVICE, + }, +}; +#endif + +#if defined(CONFIG_SOC_OMAP5) || defined(CONFIG_SOC_DRA7XX) +static struct map_desc omap54xx_io_desc[] __initdata = { + { + .virtual = L3_54XX_VIRT, + .pfn = __phys_to_pfn(L3_54XX_PHYS), + .length = L3_54XX_SIZE, + .type = MT_DEVICE, + }, + { + .virtual = L4_54XX_VIRT, + .pfn = __phys_to_pfn(L4_54XX_PHYS), + .length = L4_54XX_SIZE, + .type = MT_DEVICE, + }, + { + .virtual = L4_WK_54XX_VIRT, + .pfn = __phys_to_pfn(L4_WK_54XX_PHYS), + .length = L4_WK_54XX_SIZE, + .type = MT_DEVICE, + }, + { + .virtual = L4_PER_54XX_VIRT, + .pfn = __phys_to_pfn(L4_PER_54XX_PHYS), + .length = L4_PER_54XX_SIZE, + .type = MT_DEVICE, + }, +}; +#endif + +#ifdef CONFIG_SOC_OMAP2420 +void __init omap242x_map_io(void) +{ + iotable_init(omap24xx_io_desc, ARRAY_SIZE(omap24xx_io_desc)); + iotable_init(omap242x_io_desc, ARRAY_SIZE(omap242x_io_desc)); +} +#endif + +#ifdef CONFIG_SOC_OMAP2430 +void __init omap243x_map_io(void) +{ + iotable_init(omap24xx_io_desc, ARRAY_SIZE(omap24xx_io_desc)); + iotable_init(omap243x_io_desc, ARRAY_SIZE(omap243x_io_desc)); +} +#endif + +#ifdef CONFIG_ARCH_OMAP3 +void __init omap3_map_io(void) +{ + iotable_init(omap34xx_io_desc, ARRAY_SIZE(omap34xx_io_desc)); +} +#endif + +#ifdef CONFIG_SOC_TI81XX +void __init ti81xx_map_io(void) +{ + iotable_init(omapti81xx_io_desc, ARRAY_SIZE(omapti81xx_io_desc)); +} +#endif + +#if defined(CONFIG_SOC_AM33XX) || defined(CONFIG_SOC_AM43XX) +void __init am33xx_map_io(void) +{ + iotable_init(omapam33xx_io_desc, ARRAY_SIZE(omapam33xx_io_desc)); +} +#endif + +#ifdef CONFIG_ARCH_OMAP4 +void __init omap4_map_io(void) +{ + iotable_init(omap44xx_io_desc, ARRAY_SIZE(omap44xx_io_desc)); +} +#endif + +#if defined(CONFIG_SOC_OMAP5) || defined(CONFIG_SOC_DRA7XX) +void __init omap5_map_io(void) +{ + iotable_init(omap54xx_io_desc, ARRAY_SIZE(omap54xx_io_desc)); +} +#endif +/* + * omap2_init_reprogram_sdrc - reprogram SDRC timing parameters + * + * Sets the CORE DPLL3 M2 divider to the same value that it's at + * currently. This has the effect of setting the SDRC SDRAM AC timing + * registers to the values currently defined by the kernel. Currently + * only defined for OMAP3; will return 0 if called on OMAP2. Returns + * -EINVAL if the dpll3_m2_ck cannot be found, 0 if called on OMAP2, + * or passes along the return value of clk_set_rate(). + */ +static int __init _omap2_init_reprogram_sdrc(void) +{ + struct clk *dpll3_m2_ck; + int v = -EINVAL; + long rate; + + if (!cpu_is_omap34xx()) + return 0; + + dpll3_m2_ck = clk_get(NULL, "dpll3_m2_ck"); + if (IS_ERR(dpll3_m2_ck)) + return -EINVAL; + + rate = clk_get_rate(dpll3_m2_ck); + pr_info("Reprogramming SDRC clock to %ld Hz\n", rate); + v = clk_set_rate(dpll3_m2_ck, rate); + if (v) + pr_err("dpll3_m2_clk rate change failed: %d\n", v); + + clk_put(dpll3_m2_ck); + + return v; +} + +static int _set_hwmod_postsetup_state(struct omap_hwmod *oh, void *data) +{ + return omap_hwmod_set_postsetup_state(oh, *(u8 *)data); +} + +static void __init omap_hwmod_init_postsetup(void) +{ + u8 postsetup_state; + + /* Set the default postsetup state for all hwmods */ +#ifdef CONFIG_PM + postsetup_state = _HWMOD_STATE_IDLE; +#else + postsetup_state = _HWMOD_STATE_ENABLED; +#endif + omap_hwmod_for_each(_set_hwmod_postsetup_state, &postsetup_state); + + omap_pm_if_early_init(); +} + +static void __init __maybe_unused omap_common_late_init(void) +{ + omap_mux_late_init(); + omap2_common_pm_late_init(); + omap_soc_device_init(); +} + +#ifdef CONFIG_SOC_OMAP2420 +void __init omap2420_init_early(void) +{ + omap2_set_globals_tap(OMAP242X_CLASS, OMAP2_L4_IO_ADDRESS(0x48014000)); + omap2_set_globals_sdrc(OMAP2_L3_IO_ADDRESS(OMAP2420_SDRC_BASE), + OMAP2_L3_IO_ADDRESS(OMAP2420_SMS_BASE)); + omap2_control_base_init(); + omap2xxx_check_revision(); + omap2_prcm_base_init(); + omap2xxx_voltagedomains_init(); + omap242x_powerdomains_init(); + omap242x_clockdomains_init(); + omap2420_hwmod_init(); + omap_hwmod_init_postsetup(); + omap_clk_soc_init = omap2420_dt_clk_init; + rate_table = omap2420_rate_table; +} + +void __init omap2420_init_late(void) +{ + omap_common_late_init(); + omap2_pm_init(); + omap2_clk_enable_autoidle_all(); +} +#endif + +#ifdef CONFIG_SOC_OMAP2430 +void __init omap2430_init_early(void) +{ + omap2_set_globals_tap(OMAP243X_CLASS, OMAP2_L4_IO_ADDRESS(0x4900a000)); + omap2_set_globals_sdrc(OMAP2_L3_IO_ADDRESS(OMAP243X_SDRC_BASE), + OMAP2_L3_IO_ADDRESS(OMAP243X_SMS_BASE)); + omap2_control_base_init(); + omap2xxx_check_revision(); + omap2_prcm_base_init(); + omap2xxx_voltagedomains_init(); + omap243x_powerdomains_init(); + omap243x_clockdomains_init(); + omap2430_hwmod_init(); + omap_hwmod_init_postsetup(); + omap_clk_soc_init = omap2430_dt_clk_init; + rate_table = omap2430_rate_table; +} + +void __init omap2430_init_late(void) +{ + omap_common_late_init(); + omap2_pm_init(); + omap2_clk_enable_autoidle_all(); +} +#endif + +/* + * Currently only board-omap3beagle.c should call this because of the + * same machine_id for 34xx and 36xx beagle.. Will get fixed with DT. + */ +#ifdef CONFIG_ARCH_OMAP3 +void __init omap3_init_early(void) +{ + omap2_set_globals_tap(OMAP343X_CLASS, OMAP2_L4_IO_ADDRESS(0x4830A000)); + omap2_set_globals_sdrc(OMAP2_L3_IO_ADDRESS(OMAP343X_SDRC_BASE), + OMAP2_L3_IO_ADDRESS(OMAP343X_SMS_BASE)); + /* XXX: remove these once OMAP3 is DT only */ + if (!of_have_populated_dt()) { + omap2_set_globals_control( + OMAP2_L4_IO_ADDRESS(OMAP343X_CTRL_BASE)); + omap2_set_globals_prm(OMAP2_L4_IO_ADDRESS(OMAP3430_PRM_BASE)); + omap2_set_globals_cm(OMAP2_L4_IO_ADDRESS(OMAP3430_CM_BASE), + NULL); + } + omap2_control_base_init(); + omap3xxx_check_revision(); + omap3xxx_check_features(); + omap2_prcm_base_init(); + /* XXX: remove these once OMAP3 is DT only */ + if (!of_have_populated_dt()) { + omap3xxx_prm_init(NULL); + omap3xxx_cm_init(NULL); + } + omap3xxx_voltagedomains_init(); + omap3xxx_powerdomains_init(); + omap3xxx_clockdomains_init(); + omap3xxx_hwmod_init(); + omap_hwmod_init_postsetup(); + if (!of_have_populated_dt()) { + omap3_control_legacy_iomap_init(); + if (soc_is_am35xx()) + omap_clk_soc_init = am35xx_clk_legacy_init; + else if (cpu_is_omap3630()) + omap_clk_soc_init = omap36xx_clk_legacy_init; + else if (omap_rev() == OMAP3430_REV_ES1_0) + omap_clk_soc_init = omap3430es1_clk_legacy_init; + else + omap_clk_soc_init = omap3430_clk_legacy_init; + } +} + +void __init omap3430_init_early(void) +{ + omap3_init_early(); + if (of_have_populated_dt()) + omap_clk_soc_init = omap3430_dt_clk_init; +} + +void __init omap35xx_init_early(void) +{ + omap3_init_early(); + if (of_have_populated_dt()) + omap_clk_soc_init = omap3430_dt_clk_init; +} + +void __init omap3630_init_early(void) +{ + omap3_init_early(); + if (of_have_populated_dt()) + omap_clk_soc_init = omap3630_dt_clk_init; +} + +void __init am35xx_init_early(void) +{ + omap3_init_early(); + if (of_have_populated_dt()) + omap_clk_soc_init = am35xx_dt_clk_init; +} + +void __init omap3_init_late(void) +{ + omap_common_late_init(); + omap3_pm_init(); + omap2_clk_enable_autoidle_all(); +} + +void __init omap3430_init_late(void) +{ + omap_common_late_init(); + omap3_pm_init(); + omap2_clk_enable_autoidle_all(); +} + +void __init omap35xx_init_late(void) +{ + omap_common_late_init(); + omap3_pm_init(); + omap2_clk_enable_autoidle_all(); +} + +void __init omap3630_init_late(void) +{ + omap_common_late_init(); + omap3_pm_init(); + omap2_clk_enable_autoidle_all(); +} + +void __init am35xx_init_late(void) +{ + omap_common_late_init(); + omap3_pm_init(); + omap2_clk_enable_autoidle_all(); +} + +void __init ti81xx_init_late(void) +{ + omap_common_late_init(); + omap2_clk_enable_autoidle_all(); +} +#endif + +#ifdef CONFIG_SOC_TI81XX +void __init ti814x_init_early(void) +{ + omap2_set_globals_tap(TI814X_CLASS, + OMAP2_L4_IO_ADDRESS(TI81XX_TAP_BASE)); + omap2_control_base_init(); + omap3xxx_check_revision(); + ti81xx_check_features(); + omap2_prcm_base_init(); + omap3xxx_voltagedomains_init(); + omap3xxx_powerdomains_init(); + ti81xx_clockdomains_init(); + ti81xx_hwmod_init(); + omap_hwmod_init_postsetup(); + if (of_have_populated_dt()) + omap_clk_soc_init = ti81xx_dt_clk_init; +} + +void __init ti816x_init_early(void) +{ + omap2_set_globals_tap(TI816X_CLASS, + OMAP2_L4_IO_ADDRESS(TI81XX_TAP_BASE)); + omap2_control_base_init(); + omap3xxx_check_revision(); + ti81xx_check_features(); + omap2_prcm_base_init(); + omap3xxx_voltagedomains_init(); + omap3xxx_powerdomains_init(); + ti81xx_clockdomains_init(); + ti81xx_hwmod_init(); + omap_hwmod_init_postsetup(); + if (of_have_populated_dt()) + omap_clk_soc_init = ti81xx_dt_clk_init; +} +#endif + +#ifdef CONFIG_SOC_AM33XX +void __init am33xx_init_early(void) +{ + omap2_set_globals_tap(AM335X_CLASS, + AM33XX_L4_WK_IO_ADDRESS(AM33XX_TAP_BASE)); + omap2_control_base_init(); + omap3xxx_check_revision(); + am33xx_check_features(); + omap2_prcm_base_init(); + am33xx_powerdomains_init(); + am33xx_clockdomains_init(); + am33xx_hwmod_init(); + omap_hwmod_init_postsetup(); + omap_clk_soc_init = am33xx_dt_clk_init; +} + +void __init am33xx_init_late(void) +{ + omap_common_late_init(); +} +#endif + +#ifdef CONFIG_SOC_AM43XX +void __init am43xx_init_early(void) +{ + omap2_set_globals_tap(AM335X_CLASS, + AM33XX_L4_WK_IO_ADDRESS(AM33XX_TAP_BASE)); + omap2_control_base_init(); + omap3xxx_check_revision(); + am33xx_check_features(); + omap2_prcm_base_init(); + am43xx_powerdomains_init(); + am43xx_clockdomains_init(); + am43xx_hwmod_init(); + omap_hwmod_init_postsetup(); + omap_l2_cache_init(); + omap_clk_soc_init = am43xx_dt_clk_init; +} + +void __init am43xx_init_late(void) +{ + omap_common_late_init(); +} +#endif + +#ifdef CONFIG_ARCH_OMAP4 +void __init omap4430_init_early(void) +{ + omap2_set_globals_tap(OMAP443X_CLASS, + OMAP2_L4_IO_ADDRESS(OMAP443X_SCM_BASE)); + omap2_set_globals_prcm_mpu(OMAP2_L4_IO_ADDRESS(OMAP4430_PRCM_MPU_BASE)); + omap2_control_base_init(); + omap4xxx_check_revision(); + omap4xxx_check_features(); + omap2_prcm_base_init(); + omap4_pm_init_early(); + omap44xx_voltagedomains_init(); + omap44xx_powerdomains_init(); + omap44xx_clockdomains_init(); + omap44xx_hwmod_init(); + omap_hwmod_init_postsetup(); + omap_l2_cache_init(); + omap_clk_soc_init = omap4xxx_dt_clk_init; +} + +void __init omap4430_init_late(void) +{ + omap_common_late_init(); + omap4_pm_init(); + omap2_clk_enable_autoidle_all(); +} +#endif + +#ifdef CONFIG_SOC_OMAP5 +void __init omap5_init_early(void) +{ + omap2_set_globals_tap(OMAP54XX_CLASS, + OMAP2_L4_IO_ADDRESS(OMAP54XX_SCM_BASE)); + omap2_set_globals_prcm_mpu(OMAP2_L4_IO_ADDRESS(OMAP54XX_PRCM_MPU_BASE)); + omap2_control_base_init(); + omap4_pm_init_early(); + omap2_prcm_base_init(); + omap5xxx_check_revision(); + omap54xx_voltagedomains_init(); + omap54xx_powerdomains_init(); + omap54xx_clockdomains_init(); + omap54xx_hwmod_init(); + omap_hwmod_init_postsetup(); + omap_clk_soc_init = omap5xxx_dt_clk_init; +} + +void __init omap5_init_late(void) +{ + omap_common_late_init(); + omap4_pm_init(); + omap2_clk_enable_autoidle_all(); +} +#endif + +#ifdef CONFIG_SOC_DRA7XX +void __init dra7xx_init_early(void) +{ + omap2_set_globals_tap(-1, OMAP2_L4_IO_ADDRESS(DRA7XX_TAP_BASE)); + omap2_set_globals_prcm_mpu(OMAP2_L4_IO_ADDRESS(OMAP54XX_PRCM_MPU_BASE)); + omap2_control_base_init(); + omap4_pm_init_early(); + omap2_prcm_base_init(); + dra7xxx_check_revision(); + dra7xx_powerdomains_init(); + dra7xx_clockdomains_init(); + dra7xx_hwmod_init(); + omap_hwmod_init_postsetup(); + omap_clk_soc_init = dra7xx_dt_clk_init; +} + +void __init dra7xx_init_late(void) +{ + omap_common_late_init(); + omap4_pm_init(); + omap2_clk_enable_autoidle_all(); +} +#endif + + +void __init omap_sdrc_init(struct omap_sdrc_params *sdrc_cs0, + struct omap_sdrc_params *sdrc_cs1) +{ + omap_sram_init(); + + if (cpu_is_omap24xx() || omap3_has_sdrc()) { + omap2_sdrc_init(sdrc_cs0, sdrc_cs1); + _omap2_init_reprogram_sdrc(); + } +} + +int __init omap_clk_init(void) +{ + int ret = 0; + + if (!omap_clk_soc_init) + return 0; + + ti_clk_init_features(); + + if (of_have_populated_dt()) { + ret = omap_control_init(); + if (ret) + return ret; + + ret = omap_prcm_init(); + if (ret) + return ret; + + of_clk_init(NULL); + + ti_dt_clk_init_retry_clks(); + + ti_dt_clockdomains_setup(); + } + + ret = omap_clk_soc_init(); + + return ret; +} |