diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-lh7a40x/clcd.c | 241 |
1 files changed, 241 insertions, 0 deletions
diff --git a/arch/arm/mach-lh7a40x/clcd.c b/arch/arm/mach-lh7a40x/clcd.c new file mode 100644 index 0000000..93751fe --- /dev/null +++ b/arch/arm/mach-lh7a40x/clcd.c @@ -0,0 +1,241 @@ +/* + * arch/arm/mach-lh7a40x/clcd.c + * + * Copyright (C) 2004 Marc Singer + * + * 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/config.h> +#include <linux/init.h> +#include <linux/device.h> +#include <linux/dma-mapping.h> +#include <linux/sysdev.h> +#include <linux/interrupt.h> + +//#include <linux/module.h> +//#include <linux/time.h> +//#include <asm/hardware.h> + +//#include <asm/mach/time.h> +#include <asm/irq.h> +#include <asm/mach/irq.h> + +#include <asm/system.h> +#include <asm/hardware.h> +#include <linux/amba/bus.h> +#include <linux/amba/clcd.h> + +#define HRTFTC_HRSETUP __REG(HRTFTC_PHYS + 0x00) +#define HRTFTC_HRCON __REG(HRTFTC_PHYS + 0x04) +#define HRTFTC_HRTIMING1 __REG(HRTFTC_PHYS + 0x08) +#define HRTFTC_HRTIMING2 __REG(HRTFTC_PHYS + 0x0c) + +#define ALI_SETUP __REG(ALI_PHYS + 0x00) +#define ALI_CONTROL __REG(ALI_PHYS + 0x04) +#define ALI_TIMING1 __REG(ALI_PHYS + 0x08) +#define ALI_TIMING2 __REG(ALI_PHYS + 0x0c) + +#include "lcd-panel.h" + +static void lh7a40x_clcd_disable (struct clcd_fb *fb) +{ +#if defined (CONFIG_MACH_LPD7A400) + CPLD_CONTROL &= ~(1<<1); /* Disable LCD Vee */ +#endif + +#if defined (CONFIG_MACH_LPD7A404) + GPIO_PCD &= ~(1<<3); /* Disable LCD Vee */ +#endif + +#if defined (CONFIG_ARCH_LH7A400) + HRTFTC_HRSETUP &= ~(1<<13); /* Disable HRTFT controller */ +#endif + +#if defined (CONFIG_ARCH_LH7A404) + ALI_SETUP &= ~(1<<13); /* Disable ALI */ +#endif +} + +static void lh7a40x_clcd_enable (struct clcd_fb *fb) +{ + struct clcd_panel_extra* extra + = (struct clcd_panel_extra*) fb->board_data; + +#if defined (CONFIG_MACH_LPD7A400) + CPLD_CONTROL |= (1<<1); /* Enable LCD Vee */ +#endif + +#if defined (CONFIG_MACH_LPD7A404) + GPIO_PCDD &= ~(1<<3); /* Enable LCD Vee */ + GPIO_PCD |= (1<<3); +#endif + +#if defined (CONFIG_ARCH_LH7A400) + + if (extra) { + HRTFTC_HRSETUP + = (1 << 13) + | ((fb->fb.var.xres - 1) << 4) + | 0xc + | (extra->hrmode ? 1 : 0); + HRTFTC_HRCON + = ((extra->clsen ? 1 : 0) << 1) + | ((extra->spsen ? 1 : 0) << 0); + HRTFTC_HRTIMING1 + = (extra->pcdel << 8) + | (extra->revdel << 4) + | (extra->lpdel << 0); + HRTFTC_HRTIMING2 + = (extra->spldel << 9) + | (extra->pc2del << 0); + } + else + HRTFTC_HRSETUP + = (1 << 13) + | 0xc; +#endif + +#if defined (CONFIG_ARCH_LH7A404) + + if (extra) { + ALI_SETUP + = (1 << 13) + | ((fb->fb.var.xres - 1) << 4) + | 0xc + | (extra->hrmode ? 1 : 0); + ALI_CONTROL + = ((extra->clsen ? 1 : 0) << 1) + | ((extra->spsen ? 1 : 0) << 0); + ALI_TIMING1 + = (extra->pcdel << 8) + | (extra->revdel << 4) + | (extra->lpdel << 0); + ALI_TIMING2 + = (extra->spldel << 9) + | (extra->pc2del << 0); + } + else + ALI_SETUP + = (1 << 13) + | 0xc; +#endif + +} + +#define FRAMESIZE(s) (((s) + PAGE_SIZE - 1)&PAGE_MASK) + +static int lh7a40x_clcd_setup (struct clcd_fb *fb) +{ + dma_addr_t dma; + u32 len = FRAMESIZE (lcd_panel.mode.xres*lcd_panel.mode.yres + *(lcd_panel.bpp/8)); + + fb->panel = &lcd_panel; + + /* Enforce the sync polarity defaults */ + if (!(fb->panel->tim2 & TIM2_IHS)) + fb->fb.var.sync |= FB_SYNC_HOR_HIGH_ACT; + if (!(fb->panel->tim2 & TIM2_IVS)) + fb->fb.var.sync |= FB_SYNC_VERT_HIGH_ACT; + +#if defined (HAS_LCD_PANEL_EXTRA) + fb->board_data = &lcd_panel_extra; +#endif + + fb->fb.screen_base + = dma_alloc_writecombine (&fb->dev->dev, len, + &dma, GFP_KERNEL); + printk ("CLCD: LCD setup fb virt 0x%p phys 0x%p l %x io 0x%p \n", + fb->fb.screen_base, (void*) dma, len, + (void*) io_p2v (CLCDC_PHYS)); + printk ("CLCD: pixclock %d\n", lcd_panel.mode.pixclock); + + if (!fb->fb.screen_base) { + printk(KERN_ERR "CLCD: unable to map framebuffer\n"); + return -ENOMEM; + } + +#if defined (USE_RGB555) + fb->fb.var.green.length = 5; /* Panel uses RGB 5:5:5 */ +#endif + + fb->fb.fix.smem_start = dma; + fb->fb.fix.smem_len = len; + + /* Drive PE4 high to prevent CPLD crash */ + GPIO_PEDD |= (1<<4); + GPIO_PED |= (1<<4); + + GPIO_PINMUX |= (1<<1) | (1<<0); /* LCDVD[15:4] */ + +// fb->fb.fbops->fb_check_var (&fb->fb.var, &fb->fb); +// fb->fb.fbops->fb_set_par (&fb->fb); + + return 0; +} + +static int lh7a40x_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 lh7a40x_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); +} + +static struct clcd_board clcd_platform_data = { + .name = "lh7a40x FB", + .check = clcdfb_check, + .decode = clcdfb_decode, + .enable = lh7a40x_clcd_enable, + .setup = lh7a40x_clcd_setup, + .mmap = lh7a40x_clcd_mmap, + .remove = lh7a40x_clcd_remove, + .disable = lh7a40x_clcd_disable, +}; + +#define IRQ_CLCDC (IRQ_LCDINTR) + +#define AMBA_DEVICE(name,busid,base,plat,pid) \ +static struct amba_device name##_device = { \ + .dev = { \ + .coherent_dma_mask = ~0, \ + .bus_id = busid, \ + .platform_data = plat, \ + }, \ + .res = { \ + .start = base##_PHYS, \ + .end = (base##_PHYS) + (4*1024) - 1, \ + .flags = IORESOURCE_MEM, \ + }, \ + .dma_mask = ~0, \ + .irq = { IRQ_##base, }, \ + /* .dma = base##_DMA,*/ \ + .periphid = pid, \ +} + +AMBA_DEVICE(clcd, "cldc-lh7a40x", CLCDC, &clcd_platform_data, 0x41110); + +static struct amba_device *amba_devs[] __initdata = { + &clcd_device, +}; + +void __init lh7a40x_clcd_init (void) +{ + int i; + int result; + printk ("CLCD: registering amba devices\n"); + for (i = 0; i < ARRAY_SIZE(amba_devs); i++) { + struct amba_device *d = amba_devs[i]; + result = amba_device_register(d, &iomem_resource); + printk (" %d -> %d\n", i ,result); + } +} |
