Marc Singer | 903e2bb | 2006-05-16 11:41:30 +0100 | [diff] [blame] | 1 | /* |
| 2 | * arch/arm/mach-lh7a40x/clcd.c |
| 3 | * |
| 4 | * Copyright (C) 2004 Marc Singer |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * version 2 as published by the Free Software Foundation. |
| 9 | * |
| 10 | */ |
Dave Jones | 038b0a6 | 2006-10-04 03:38:54 -0400 | [diff] [blame^] | 11 | |
Marc Singer | 903e2bb | 2006-05-16 11:41:30 +0100 | [diff] [blame] | 12 | #include <linux/init.h> |
| 13 | #include <linux/device.h> |
| 14 | #include <linux/dma-mapping.h> |
| 15 | #include <linux/sysdev.h> |
| 16 | #include <linux/interrupt.h> |
| 17 | |
| 18 | //#include <linux/module.h> |
| 19 | //#include <linux/time.h> |
| 20 | //#include <asm/hardware.h> |
| 21 | |
| 22 | //#include <asm/mach/time.h> |
| 23 | #include <asm/irq.h> |
| 24 | #include <asm/mach/irq.h> |
| 25 | |
| 26 | #include <asm/system.h> |
| 27 | #include <asm/hardware.h> |
| 28 | #include <linux/amba/bus.h> |
| 29 | #include <linux/amba/clcd.h> |
| 30 | |
| 31 | #define HRTFTC_HRSETUP __REG(HRTFTC_PHYS + 0x00) |
| 32 | #define HRTFTC_HRCON __REG(HRTFTC_PHYS + 0x04) |
| 33 | #define HRTFTC_HRTIMING1 __REG(HRTFTC_PHYS + 0x08) |
| 34 | #define HRTFTC_HRTIMING2 __REG(HRTFTC_PHYS + 0x0c) |
| 35 | |
| 36 | #define ALI_SETUP __REG(ALI_PHYS + 0x00) |
| 37 | #define ALI_CONTROL __REG(ALI_PHYS + 0x04) |
| 38 | #define ALI_TIMING1 __REG(ALI_PHYS + 0x08) |
| 39 | #define ALI_TIMING2 __REG(ALI_PHYS + 0x0c) |
| 40 | |
| 41 | #include "lcd-panel.h" |
| 42 | |
| 43 | static void lh7a40x_clcd_disable (struct clcd_fb *fb) |
| 44 | { |
| 45 | #if defined (CONFIG_MACH_LPD7A400) |
| 46 | CPLD_CONTROL &= ~(1<<1); /* Disable LCD Vee */ |
| 47 | #endif |
| 48 | |
| 49 | #if defined (CONFIG_MACH_LPD7A404) |
| 50 | GPIO_PCD &= ~(1<<3); /* Disable LCD Vee */ |
| 51 | #endif |
| 52 | |
| 53 | #if defined (CONFIG_ARCH_LH7A400) |
| 54 | HRTFTC_HRSETUP &= ~(1<<13); /* Disable HRTFT controller */ |
| 55 | #endif |
| 56 | |
| 57 | #if defined (CONFIG_ARCH_LH7A404) |
| 58 | ALI_SETUP &= ~(1<<13); /* Disable ALI */ |
| 59 | #endif |
| 60 | } |
| 61 | |
| 62 | static void lh7a40x_clcd_enable (struct clcd_fb *fb) |
| 63 | { |
| 64 | struct clcd_panel_extra* extra |
| 65 | = (struct clcd_panel_extra*) fb->board_data; |
| 66 | |
| 67 | #if defined (CONFIG_MACH_LPD7A400) |
| 68 | CPLD_CONTROL |= (1<<1); /* Enable LCD Vee */ |
| 69 | #endif |
| 70 | |
| 71 | #if defined (CONFIG_MACH_LPD7A404) |
| 72 | GPIO_PCDD &= ~(1<<3); /* Enable LCD Vee */ |
| 73 | GPIO_PCD |= (1<<3); |
| 74 | #endif |
| 75 | |
| 76 | #if defined (CONFIG_ARCH_LH7A400) |
| 77 | |
| 78 | if (extra) { |
| 79 | HRTFTC_HRSETUP |
| 80 | = (1 << 13) |
| 81 | | ((fb->fb.var.xres - 1) << 4) |
| 82 | | 0xc |
| 83 | | (extra->hrmode ? 1 : 0); |
| 84 | HRTFTC_HRCON |
| 85 | = ((extra->clsen ? 1 : 0) << 1) |
| 86 | | ((extra->spsen ? 1 : 0) << 0); |
| 87 | HRTFTC_HRTIMING1 |
| 88 | = (extra->pcdel << 8) |
| 89 | | (extra->revdel << 4) |
| 90 | | (extra->lpdel << 0); |
| 91 | HRTFTC_HRTIMING2 |
| 92 | = (extra->spldel << 9) |
| 93 | | (extra->pc2del << 0); |
| 94 | } |
| 95 | else |
| 96 | HRTFTC_HRSETUP |
| 97 | = (1 << 13) |
| 98 | | 0xc; |
| 99 | #endif |
| 100 | |
| 101 | #if defined (CONFIG_ARCH_LH7A404) |
| 102 | |
| 103 | if (extra) { |
| 104 | ALI_SETUP |
| 105 | = (1 << 13) |
| 106 | | ((fb->fb.var.xres - 1) << 4) |
| 107 | | 0xc |
| 108 | | (extra->hrmode ? 1 : 0); |
| 109 | ALI_CONTROL |
| 110 | = ((extra->clsen ? 1 : 0) << 1) |
| 111 | | ((extra->spsen ? 1 : 0) << 0); |
| 112 | ALI_TIMING1 |
| 113 | = (extra->pcdel << 8) |
| 114 | | (extra->revdel << 4) |
| 115 | | (extra->lpdel << 0); |
| 116 | ALI_TIMING2 |
| 117 | = (extra->spldel << 9) |
| 118 | | (extra->pc2del << 0); |
| 119 | } |
| 120 | else |
| 121 | ALI_SETUP |
| 122 | = (1 << 13) |
| 123 | | 0xc; |
| 124 | #endif |
| 125 | |
| 126 | } |
| 127 | |
| 128 | #define FRAMESIZE(s) (((s) + PAGE_SIZE - 1)&PAGE_MASK) |
| 129 | |
| 130 | static int lh7a40x_clcd_setup (struct clcd_fb *fb) |
| 131 | { |
| 132 | dma_addr_t dma; |
| 133 | u32 len = FRAMESIZE (lcd_panel.mode.xres*lcd_panel.mode.yres |
| 134 | *(lcd_panel.bpp/8)); |
| 135 | |
| 136 | fb->panel = &lcd_panel; |
| 137 | |
| 138 | /* Enforce the sync polarity defaults */ |
| 139 | if (!(fb->panel->tim2 & TIM2_IHS)) |
| 140 | fb->fb.var.sync |= FB_SYNC_HOR_HIGH_ACT; |
| 141 | if (!(fb->panel->tim2 & TIM2_IVS)) |
| 142 | fb->fb.var.sync |= FB_SYNC_VERT_HIGH_ACT; |
| 143 | |
| 144 | #if defined (HAS_LCD_PANEL_EXTRA) |
| 145 | fb->board_data = &lcd_panel_extra; |
| 146 | #endif |
| 147 | |
| 148 | fb->fb.screen_base |
| 149 | = dma_alloc_writecombine (&fb->dev->dev, len, |
| 150 | &dma, GFP_KERNEL); |
| 151 | printk ("CLCD: LCD setup fb virt 0x%p phys 0x%p l %x io 0x%p \n", |
| 152 | fb->fb.screen_base, (void*) dma, len, |
| 153 | (void*) io_p2v (CLCDC_PHYS)); |
| 154 | printk ("CLCD: pixclock %d\n", lcd_panel.mode.pixclock); |
| 155 | |
| 156 | if (!fb->fb.screen_base) { |
| 157 | printk(KERN_ERR "CLCD: unable to map framebuffer\n"); |
| 158 | return -ENOMEM; |
| 159 | } |
| 160 | |
| 161 | #if defined (USE_RGB555) |
| 162 | fb->fb.var.green.length = 5; /* Panel uses RGB 5:5:5 */ |
| 163 | #endif |
| 164 | |
| 165 | fb->fb.fix.smem_start = dma; |
| 166 | fb->fb.fix.smem_len = len; |
| 167 | |
| 168 | /* Drive PE4 high to prevent CPLD crash */ |
| 169 | GPIO_PEDD |= (1<<4); |
| 170 | GPIO_PED |= (1<<4); |
| 171 | |
| 172 | GPIO_PINMUX |= (1<<1) | (1<<0); /* LCDVD[15:4] */ |
| 173 | |
| 174 | // fb->fb.fbops->fb_check_var (&fb->fb.var, &fb->fb); |
| 175 | // fb->fb.fbops->fb_set_par (&fb->fb); |
| 176 | |
| 177 | return 0; |
| 178 | } |
| 179 | |
| 180 | static int lh7a40x_clcd_mmap (struct clcd_fb *fb, struct vm_area_struct *vma) |
| 181 | { |
| 182 | return dma_mmap_writecombine(&fb->dev->dev, vma, |
| 183 | fb->fb.screen_base, |
| 184 | fb->fb.fix.smem_start, |
| 185 | fb->fb.fix.smem_len); |
| 186 | } |
| 187 | |
| 188 | static void lh7a40x_clcd_remove (struct clcd_fb *fb) |
| 189 | { |
| 190 | dma_free_writecombine (&fb->dev->dev, fb->fb.fix.smem_len, |
| 191 | fb->fb.screen_base, fb->fb.fix.smem_start); |
| 192 | } |
| 193 | |
| 194 | static struct clcd_board clcd_platform_data = { |
| 195 | .name = "lh7a40x FB", |
| 196 | .check = clcdfb_check, |
| 197 | .decode = clcdfb_decode, |
| 198 | .enable = lh7a40x_clcd_enable, |
| 199 | .setup = lh7a40x_clcd_setup, |
| 200 | .mmap = lh7a40x_clcd_mmap, |
| 201 | .remove = lh7a40x_clcd_remove, |
| 202 | .disable = lh7a40x_clcd_disable, |
| 203 | }; |
| 204 | |
| 205 | #define IRQ_CLCDC (IRQ_LCDINTR) |
| 206 | |
| 207 | #define AMBA_DEVICE(name,busid,base,plat,pid) \ |
| 208 | static struct amba_device name##_device = { \ |
| 209 | .dev = { \ |
| 210 | .coherent_dma_mask = ~0, \ |
| 211 | .bus_id = busid, \ |
| 212 | .platform_data = plat, \ |
| 213 | }, \ |
| 214 | .res = { \ |
| 215 | .start = base##_PHYS, \ |
| 216 | .end = (base##_PHYS) + (4*1024) - 1, \ |
| 217 | .flags = IORESOURCE_MEM, \ |
| 218 | }, \ |
| 219 | .dma_mask = ~0, \ |
| 220 | .irq = { IRQ_##base, }, \ |
| 221 | /* .dma = base##_DMA,*/ \ |
| 222 | .periphid = pid, \ |
| 223 | } |
| 224 | |
| 225 | AMBA_DEVICE(clcd, "cldc-lh7a40x", CLCDC, &clcd_platform_data, 0x41110); |
| 226 | |
| 227 | static struct amba_device *amba_devs[] __initdata = { |
| 228 | &clcd_device, |
| 229 | }; |
| 230 | |
| 231 | void __init lh7a40x_clcd_init (void) |
| 232 | { |
| 233 | int i; |
| 234 | int result; |
| 235 | printk ("CLCD: registering amba devices\n"); |
| 236 | for (i = 0; i < ARRAY_SIZE(amba_devs); i++) { |
| 237 | struct amba_device *d = amba_devs[i]; |
| 238 | result = amba_device_register(d, &iomem_resource); |
| 239 | printk (" %d -> %d\n", i ,result); |
| 240 | } |
| 241 | } |