diff options
Diffstat (limited to 'kernel/arch/arm/mach-nspire')
-rw-r--r-- | kernel/arch/arm/mach-nspire/Kconfig | 11 | ||||
-rw-r--r-- | kernel/arch/arm/mach-nspire/Makefile | 2 | ||||
-rw-r--r-- | kernel/arch/arm/mach-nspire/Makefile.boot | 0 | ||||
-rw-r--r-- | kernel/arch/arm/mach-nspire/clcd.c | 119 | ||||
-rw-r--r-- | kernel/arch/arm/mach-nspire/clcd.h | 14 | ||||
-rw-r--r-- | kernel/arch/arm/mach-nspire/mmio.h | 20 | ||||
-rw-r--r-- | kernel/arch/arm/mach-nspire/nspire.c | 80 |
7 files changed, 246 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-nspire/Kconfig b/kernel/arch/arm/mach-nspire/Kconfig new file mode 100644 index 000000000..bc41f26c1 --- /dev/null +++ b/kernel/arch/arm/mach-nspire/Kconfig @@ -0,0 +1,11 @@ +config ARCH_NSPIRE + bool "TI-NSPIRE based" + depends on ARCH_MULTI_V4_V5 + depends on MMU + select CPU_ARM926T + select GENERIC_IRQ_CHIP + select ARM_AMBA + select ARM_VIC + select ARM_TIMER_SP804 + help + This enables support for systems using the TI-NSPIRE CPU diff --git a/kernel/arch/arm/mach-nspire/Makefile b/kernel/arch/arm/mach-nspire/Makefile new file mode 100644 index 000000000..1bec256eb --- /dev/null +++ b/kernel/arch/arm/mach-nspire/Makefile @@ -0,0 +1,2 @@ +obj-y += nspire.o +obj-y += clcd.o diff --git a/kernel/arch/arm/mach-nspire/Makefile.boot b/kernel/arch/arm/mach-nspire/Makefile.boot new file mode 100644 index 000000000..e69de29bb --- /dev/null +++ b/kernel/arch/arm/mach-nspire/Makefile.boot diff --git a/kernel/arch/arm/mach-nspire/clcd.c b/kernel/arch/arm/mach-nspire/clcd.c new file mode 100644 index 000000000..abea12617 --- /dev/null +++ b/kernel/arch/arm/mach-nspire/clcd.c @@ -0,0 +1,119 @@ +/* + * linux/arch/arm/mach-nspire/clcd.c + * + * Copyright (C) 2013 Daniel Tang <tangrs@tangrs.id.au> + * + * 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/init.h> +#include <linux/of.h> +#include <linux/amba/bus.h> +#include <linux/amba/clcd.h> +#include <linux/dma-mapping.h> + +static struct clcd_panel nspire_cx_lcd_panel = { + .mode = { + .name = "Color LCD", + .refresh = 60, + .xres = 320, + .yres = 240, + .sync = 0, + .vmode = FB_VMODE_NONINTERLACED, + .pixclock = 1, + .hsync_len = 6, + .vsync_len = 1, + .right_margin = 50, + .left_margin = 38, + .lower_margin = 3, + .upper_margin = 17, + }, + .width = 65, /* ~6.50 cm */ + .height = 49, /* ~4.87 cm */ + .tim2 = TIM2_IPC, + .cntl = CNTL_LCDTFT | CNTL_LCDVCOMP(1), + .bpp = 16, + .caps = CLCD_CAP_565, +}; + +static struct clcd_panel nspire_classic_lcd_panel = { + .mode = { + .name = "Grayscale LCD", + .refresh = 60, + .xres = 320, + .yres = 240, + .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + .vmode = FB_VMODE_NONINTERLACED, + .pixclock = 1, + .hsync_len = 6, + .vsync_len = 1, + .right_margin = 6, + .left_margin = 6, + }, + .width = 71, /* 7.11cm */ + .height = 53, /* 5.33cm */ + .tim2 = 0x80007d0, + .cntl = CNTL_LCDMONO8, + .bpp = 8, + .grayscale = 1, + .caps = CLCD_CAP_5551, +}; + +int nspire_clcd_setup(struct clcd_fb *fb) +{ + struct clcd_panel *panel; + size_t panel_size; + const char *type; + dma_addr_t dma; + int err; + + BUG_ON(!fb->dev->dev.of_node); + + err = of_property_read_string(fb->dev->dev.of_node, "lcd-type", &type); + if (err) { + pr_err("CLCD: Could not find lcd-type property\n"); + return err; + } + + if (!strcmp(type, "cx")) { + panel = &nspire_cx_lcd_panel; + } else if (!strcmp(type, "classic")) { + panel = &nspire_classic_lcd_panel; + } else { + pr_err("CLCD: Unknown lcd-type %s\n", type); + return -EINVAL; + } + + panel_size = ((panel->mode.xres * panel->mode.yres) * panel->bpp) / 8; + panel_size = ALIGN(panel_size, PAGE_SIZE); + + fb->fb.screen_base = dma_alloc_writecombine(&fb->dev->dev, + panel_size, &dma, GFP_KERNEL); + + if (!fb->fb.screen_base) { + pr_err("CLCD: unable to map framebuffer\n"); + return -ENOMEM; + } + + fb->fb.fix.smem_start = dma; + fb->fb.fix.smem_len = panel_size; + fb->panel = panel; + + return 0; +} + +int nspire_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); +} + +void nspire_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); +} diff --git a/kernel/arch/arm/mach-nspire/clcd.h b/kernel/arch/arm/mach-nspire/clcd.h new file mode 100644 index 000000000..8c33d2c18 --- /dev/null +++ b/kernel/arch/arm/mach-nspire/clcd.h @@ -0,0 +1,14 @@ +/* + * linux/arch/arm/mach-nspire/clcd.h + * + * Copyright (C) 2013 Daniel Tang <tangrs@tangrs.id.au> + * + * 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. + * + */ + +int nspire_clcd_setup(struct clcd_fb *fb); +int nspire_clcd_mmap(struct clcd_fb *fb, struct vm_area_struct *vma); +void nspire_clcd_remove(struct clcd_fb *fb); diff --git a/kernel/arch/arm/mach-nspire/mmio.h b/kernel/arch/arm/mach-nspire/mmio.h new file mode 100644 index 000000000..8813471af --- /dev/null +++ b/kernel/arch/arm/mach-nspire/mmio.h @@ -0,0 +1,20 @@ +/* + * linux/arch/arm/mach-nspire/mmio.h + * + * Copyright (C) 2013 Daniel Tang <tangrs@tangrs.id.au> + * + * 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. + * + */ + +#define NSPIRE_MISC_PHYS_BASE 0x900A0000 +#define NSPIRE_MISC_HWRESET 0x08 + +#define NSPIRE_PWR_PHYS_BASE 0x900B0000 +#define NSPIRE_PWR_VIRT_BASE 0xFEEB0000 +#define NSPIRE_PWR_BUS_DISABLE1 0x18 +#define NSPIRE_PWR_BUS_DISABLE2 0x20 + +#define NSPIRE_LCD_PHYS_BASE 0xC0000000 diff --git a/kernel/arch/arm/mach-nspire/nspire.c b/kernel/arch/arm/mach-nspire/nspire.c new file mode 100644 index 000000000..3445a5686 --- /dev/null +++ b/kernel/arch/arm/mach-nspire/nspire.c @@ -0,0 +1,80 @@ +/* + * linux/arch/arm/mach-nspire/nspire.c + * + * Copyright (C) 2013 Daniel Tang <tangrs@tangrs.id.au> + * + * 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/init.h> +#include <linux/of_irq.h> +#include <linux/of_address.h> +#include <linux/of_platform.h> +#include <linux/irqchip.h> +#include <linux/irqchip/arm-vic.h> +#include <linux/clkdev.h> +#include <linux/amba/bus.h> +#include <linux/amba/clcd.h> + +#include <asm/mach/arch.h> +#include <asm/mach-types.h> +#include <asm/mach/map.h> + +#include <asm/hardware/timer-sp.h> + +#include "mmio.h" +#include "clcd.h" + +static const char *const nspire_dt_match[] __initconst = { + "ti,nspire", + "ti,nspire-cx", + "ti,nspire-tp", + "ti,nspire-clp", + NULL, +}; + +static void __init nspire_map_io(void) +{ + debug_ll_io_init(); +} + +static struct clcd_board nspire_clcd_data = { + .name = "LCD", + .caps = CLCD_CAP_5551 | CLCD_CAP_565, + .check = clcdfb_check, + .decode = clcdfb_decode, + .setup = nspire_clcd_setup, + .mmap = nspire_clcd_mmap, + .remove = nspire_clcd_remove, +}; + + +static struct of_dev_auxdata nspire_auxdata[] __initdata = { + OF_DEV_AUXDATA("arm,pl111", NSPIRE_LCD_PHYS_BASE, + NULL, &nspire_clcd_data), + { } +}; + +static void __init nspire_init(void) +{ + of_platform_populate(NULL, of_default_bus_match_table, + nspire_auxdata, NULL); +} + +static void nspire_restart(enum reboot_mode mode, const char *cmd) +{ + void __iomem *base = ioremap(NSPIRE_MISC_PHYS_BASE, SZ_4K); + if (!base) + return; + + writel(2, base + NSPIRE_MISC_HWRESET); +} + +DT_MACHINE_START(NSPIRE, "TI-NSPIRE") + .dt_compat = nspire_dt_match, + .map_io = nspire_map_io, + .init_machine = nspire_init, + .restart = nspire_restart, +MACHINE_END |