Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * BRIEF MODULE DESCRIPTION |
| 3 | * Au1100 LCD Driver. |
| 4 | * |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 5 | * Rewritten for 2.6 by Embedded Alley Solutions |
| 6 | * <source@embeddedalley.com>, based on submissions by |
| 7 | * Karl Lessard <klessard@sunrisetelecom.com> |
| 8 | * <c.pellegrin@exadron.com> |
| 9 | * |
Rodolfo Giometti | f77f50c | 2006-06-26 00:26:49 -0700 | [diff] [blame] | 10 | * PM support added by Rodolfo Giometti <giometti@linux.it> |
Rodolfo Giometti | ca27ac4 | 2006-10-03 01:14:36 -0700 | [diff] [blame] | 11 | * Cursor enable/disable by Rodolfo Giometti <giometti@linux.it> |
Rodolfo Giometti | f77f50c | 2006-06-26 00:26:49 -0700 | [diff] [blame] | 12 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * Copyright 2002 MontaVista Software |
| 14 | * Author: MontaVista Software, Inc. |
| 15 | * ppopov@mvista.com or source@mvista.com |
| 16 | * |
| 17 | * Copyright 2002 Alchemy Semiconductor |
| 18 | * Author: Alchemy Semiconductor |
| 19 | * |
| 20 | * Based on: |
| 21 | * linux/drivers/video/skeletonfb.c -- Skeleton for a frame buffer device |
| 22 | * Created 28 Dec 1997 by Geert Uytterhoeven |
| 23 | * |
| 24 | * This program is free software; you can redistribute it and/or modify it |
| 25 | * under the terms of the GNU General Public License as published by the |
| 26 | * Free Software Foundation; either version 2 of the License, or (at your |
| 27 | * option) any later version. |
| 28 | * |
| 29 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 30 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 31 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN |
| 32 | * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 33 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 34 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| 35 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON |
| 36 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 37 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 38 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 39 | * |
| 40 | * You should have received a copy of the GNU General Public License along |
| 41 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 42 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 43 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <linux/module.h> |
| 45 | #include <linux/kernel.h> |
| 46 | #include <linux/errno.h> |
| 47 | #include <linux/string.h> |
| 48 | #include <linux/mm.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | #include <linux/fb.h> |
| 50 | #include <linux/init.h> |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 51 | #include <linux/interrupt.h> |
| 52 | #include <linux/ctype.h> |
| 53 | #include <linux/dma-mapping.h> |
Freddy Spierenburg | cacfc8c | 2006-02-24 13:04:17 -0800 | [diff] [blame] | 54 | #include <linux/platform_device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 56 | #include <asm/mach-au1x00/au1000.h> |
| 57 | |
| 58 | #define DEBUG 0 |
| 59 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | #include "au1100fb.h" |
| 61 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | /* |
| 63 | * Sanity check. If this is a new Au1100 based board, search for |
| 64 | * the PB1100 ifdefs to make sure you modify the code accordingly. |
| 65 | */ |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 66 | #if defined(CONFIG_MIPS_PB1100) |
| 67 | #include <asm/mach-pb1x00/pb1100.h> |
| 68 | #elif defined(CONFIG_MIPS_DB1100) |
| 69 | #include <asm/mach-db1x00/db1x00.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | #else |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 71 | #error "Unknown Au1100 board, Au1100 FB driver not supported" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | #endif |
| 73 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 74 | #define DRIVER_NAME "au1100fb" |
| 75 | #define DRIVER_DESC "LCD controller driver for AU1100 processors" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 77 | #define to_au1100fb_device(_info) \ |
| 78 | (_info ? container_of(_info, struct au1100fb_device, info) : NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 80 | /* Bitfields format supported by the controller. Note that the order of formats |
| 81 | * SHOULD be the same as in the LCD_CONTROL_SBPPF field, so we can retrieve the |
| 82 | * right pixel format by doing rgb_bitfields[LCD_CONTROL_SBPPF_XXX >> LCD_CONTROL_SBPPF] |
| 83 | */ |
| 84 | struct fb_bitfield rgb_bitfields[][4] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | { |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 86 | /* Red, Green, Blue, Transp */ |
| 87 | { { 10, 6, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } }, |
| 88 | { { 11, 5, 0 }, { 5, 6, 0 }, { 0, 5, 0 }, { 0, 0, 0 } }, |
| 89 | { { 11, 5, 0 }, { 6, 5, 0 }, { 0, 6, 0 }, { 0, 0, 0 } }, |
| 90 | { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 15, 1, 0 } }, |
| 91 | { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 1, 0 } }, |
| 92 | |
| 93 | /* The last is used to describe 12bpp format */ |
| 94 | { { 8, 4, 0 }, { 4, 4, 0 }, { 0, 4, 0 }, { 0, 0, 0 } }, |
| 95 | }; |
| 96 | |
| 97 | static struct fb_fix_screeninfo au1100fb_fix __initdata = { |
| 98 | .id = "AU1100 FB", |
| 99 | .xpanstep = 1, |
| 100 | .ypanstep = 1, |
| 101 | .type = FB_TYPE_PACKED_PIXELS, |
| 102 | .accel = FB_ACCEL_NONE, |
| 103 | }; |
| 104 | |
| 105 | static struct fb_var_screeninfo au1100fb_var __initdata = { |
| 106 | .activate = FB_ACTIVATE_NOW, |
| 107 | .height = -1, |
| 108 | .width = -1, |
| 109 | .vmode = FB_VMODE_NONINTERLACED, |
| 110 | }; |
| 111 | |
| 112 | static struct au1100fb_drv_info drv_info; |
| 113 | |
Rodolfo Giometti | ca27ac4 | 2006-10-03 01:14:36 -0700 | [diff] [blame] | 114 | static int nocursor = 0; |
| 115 | module_param(nocursor, int, 0644); |
| 116 | MODULE_PARM_DESC(nocursor, "cursor enable/disable"); |
| 117 | |
Yoichi Yuasa | 8e92f21 | 2007-08-22 14:02:03 -0700 | [diff] [blame] | 118 | /* fb_blank |
| 119 | * Blank the screen. Depending on the mode, the screen will be |
| 120 | * activated with the backlight color, or desactivated |
| 121 | */ |
| 122 | static int au1100fb_fb_blank(int blank_mode, struct fb_info *fbi) |
| 123 | { |
| 124 | struct au1100fb_device *fbdev = to_au1100fb_device(fbi); |
| 125 | |
| 126 | print_dbg("fb_blank %d %p", blank_mode, fbi); |
| 127 | |
| 128 | switch (blank_mode) { |
| 129 | |
| 130 | case VESA_NO_BLANKING: |
| 131 | /* Turn on panel */ |
| 132 | fbdev->regs->lcd_control |= LCD_CONTROL_GO; |
| 133 | #ifdef CONFIG_MIPS_PB1100 |
| 134 | if (drv_info.panel_idx == 1) { |
| 135 | au_writew(au_readw(PB1100_G_CONTROL) |
| 136 | | (PB1100_G_CONTROL_BL | PB1100_G_CONTROL_VDD), |
| 137 | PB1100_G_CONTROL); |
| 138 | } |
| 139 | #endif |
| 140 | au_sync(); |
| 141 | break; |
| 142 | |
| 143 | case VESA_VSYNC_SUSPEND: |
| 144 | case VESA_HSYNC_SUSPEND: |
| 145 | case VESA_POWERDOWN: |
| 146 | /* Turn off panel */ |
| 147 | fbdev->regs->lcd_control &= ~LCD_CONTROL_GO; |
| 148 | #ifdef CONFIG_MIPS_PB1100 |
| 149 | if (drv_info.panel_idx == 1) { |
| 150 | au_writew(au_readw(PB1100_G_CONTROL) |
| 151 | & ~(PB1100_G_CONTROL_BL | PB1100_G_CONTROL_VDD), |
| 152 | PB1100_G_CONTROL); |
| 153 | } |
| 154 | #endif |
| 155 | au_sync(); |
| 156 | break; |
| 157 | default: |
| 158 | break; |
| 159 | |
| 160 | } |
| 161 | return 0; |
| 162 | } |
| 163 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 164 | /* |
| 165 | * Set hardware with var settings. This will enable the controller with a specific |
| 166 | * mode, normally validated with the fb_check_var method |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | */ |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 168 | int au1100fb_setmode(struct au1100fb_device *fbdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | { |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 170 | struct fb_info *info = &fbdev->info; |
| 171 | u32 words; |
| 172 | int index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 174 | if (!fbdev) |
| 175 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 177 | /* Update var-dependent FB info */ |
| 178 | if (panel_is_active(fbdev->panel) || panel_is_color(fbdev->panel)) { |
| 179 | if (info->var.bits_per_pixel <= 8) { |
| 180 | /* palettized */ |
| 181 | info->var.red.offset = 0; |
| 182 | info->var.red.length = info->var.bits_per_pixel; |
| 183 | info->var.red.msb_right = 0; |
| 184 | |
| 185 | info->var.green.offset = 0; |
| 186 | info->var.green.length = info->var.bits_per_pixel; |
| 187 | info->var.green.msb_right = 0; |
| 188 | |
| 189 | info->var.blue.offset = 0; |
| 190 | info->var.blue.length = info->var.bits_per_pixel; |
| 191 | info->var.blue.msb_right = 0; |
| 192 | |
| 193 | info->var.transp.offset = 0; |
| 194 | info->var.transp.length = 0; |
| 195 | info->var.transp.msb_right = 0; |
| 196 | |
| 197 | info->fix.visual = FB_VISUAL_PSEUDOCOLOR; |
| 198 | info->fix.line_length = info->var.xres_virtual / |
| 199 | (8/info->var.bits_per_pixel); |
| 200 | } else { |
| 201 | /* non-palettized */ |
| 202 | index = (fbdev->panel->control_base & LCD_CONTROL_SBPPF_MASK) >> LCD_CONTROL_SBPPF_BIT; |
| 203 | info->var.red = rgb_bitfields[index][0]; |
| 204 | info->var.green = rgb_bitfields[index][1]; |
| 205 | info->var.blue = rgb_bitfields[index][2]; |
| 206 | info->var.transp = rgb_bitfields[index][3]; |
| 207 | |
| 208 | info->fix.visual = FB_VISUAL_TRUECOLOR; |
| 209 | info->fix.line_length = info->var.xres_virtual << 1; /* depth=16 */ |
Rodolfo Giometti | bb39e41 | 2006-08-05 12:14:22 -0700 | [diff] [blame] | 210 | } |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 211 | } else { |
| 212 | /* mono */ |
| 213 | info->fix.visual = FB_VISUAL_MONO10; |
| 214 | info->fix.line_length = info->var.xres_virtual / 8; |
| 215 | } |
| 216 | |
| 217 | info->screen_size = info->fix.line_length * info->var.yres_virtual; |
Rodolfo Giometti | fd2d543 | 2006-08-05 12:14:19 -0700 | [diff] [blame] | 218 | info->var.rotate = ((fbdev->panel->control_base&LCD_CONTROL_SM_MASK) \ |
| 219 | >> LCD_CONTROL_SM_BIT) * 90; |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 220 | |
| 221 | /* Determine BPP mode and format */ |
Rodolfo Giometti | fd2d543 | 2006-08-05 12:14:19 -0700 | [diff] [blame] | 222 | fbdev->regs->lcd_control = fbdev->panel->control_base; |
Rodolfo Giometti | bb39e41 | 2006-08-05 12:14:22 -0700 | [diff] [blame] | 223 | fbdev->regs->lcd_horztiming = fbdev->panel->horztiming; |
| 224 | fbdev->regs->lcd_verttiming = fbdev->panel->verttiming; |
| 225 | fbdev->regs->lcd_clkcontrol = fbdev->panel->clkcontrol_base; |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 226 | fbdev->regs->lcd_intenable = 0; |
| 227 | fbdev->regs->lcd_intstatus = 0; |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 228 | fbdev->regs->lcd_dmaaddr0 = LCD_DMA_SA_N(fbdev->fb_phys); |
| 229 | |
| 230 | if (panel_is_dual(fbdev->panel)) { |
| 231 | /* Second panel display seconf half of screen if possible, |
| 232 | * otherwise display the same as the first panel */ |
| 233 | if (info->var.yres_virtual >= (info->var.yres << 1)) { |
| 234 | fbdev->regs->lcd_dmaaddr1 = LCD_DMA_SA_N(fbdev->fb_phys + |
| 235 | (info->fix.line_length * |
| 236 | (info->var.yres_virtual >> 1))); |
| 237 | } else { |
| 238 | fbdev->regs->lcd_dmaaddr1 = LCD_DMA_SA_N(fbdev->fb_phys); |
| 239 | } |
| 240 | } |
| 241 | |
| 242 | words = info->fix.line_length / sizeof(u32); |
| 243 | if (!info->var.rotate || (info->var.rotate == 180)) { |
| 244 | words *= info->var.yres_virtual; |
| 245 | if (info->var.rotate /* 180 */) { |
| 246 | words -= (words % 8); /* should be divisable by 8 */ |
| 247 | } |
| 248 | } |
| 249 | fbdev->regs->lcd_words = LCD_WRD_WRDS_N(words); |
| 250 | |
| 251 | fbdev->regs->lcd_pwmdiv = 0; |
| 252 | fbdev->regs->lcd_pwmhi = 0; |
| 253 | |
| 254 | /* Resume controller */ |
| 255 | fbdev->regs->lcd_control |= LCD_CONTROL_GO; |
Rodolfo Giometti | bb39e41 | 2006-08-05 12:14:22 -0700 | [diff] [blame] | 256 | mdelay(10); |
| 257 | au1100fb_fb_blank(VESA_NO_BLANKING, info); |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 258 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | return 0; |
| 260 | } |
| 261 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 262 | /* fb_setcolreg |
| 263 | * Set color in LCD palette. |
| 264 | */ |
| 265 | int au1100fb_fb_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp, struct fb_info *fbi) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | { |
Rodolfo Giometti | c05b7f3 | 2006-05-30 21:26:57 -0700 | [diff] [blame] | 267 | struct au1100fb_device *fbdev; |
| 268 | u32 *palette; |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 269 | u32 value; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | |
Rodolfo Giometti | c05b7f3 | 2006-05-30 21:26:57 -0700 | [diff] [blame] | 271 | fbdev = to_au1100fb_device(fbi); |
| 272 | palette = fbdev->regs->lcd_pallettebase; |
| 273 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 274 | if (regno > (AU1100_LCD_NBR_PALETTE_ENTRIES - 1)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | return -EINVAL; |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 276 | |
| 277 | if (fbi->var.grayscale) { |
| 278 | /* Convert color to grayscale */ |
| 279 | red = green = blue = |
| 280 | (19595 * red + 38470 * green + 7471 * blue) >> 16; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | } |
| 282 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 283 | if (fbi->fix.visual == FB_VISUAL_TRUECOLOR) { |
| 284 | /* Place color in the pseudopalette */ |
| 285 | if (regno > 16) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | return -EINVAL; |
| 287 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 288 | palette = (u32*)fbi->pseudo_palette; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 290 | red >>= (16 - fbi->var.red.length); |
| 291 | green >>= (16 - fbi->var.green.length); |
| 292 | blue >>= (16 - fbi->var.blue.length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 294 | value = (red << fbi->var.red.offset) | |
| 295 | (green << fbi->var.green.offset)| |
| 296 | (blue << fbi->var.blue.offset); |
| 297 | value &= 0xFFFF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 299 | } else if (panel_is_active(fbdev->panel)) { |
| 300 | /* COLOR TFT PALLETTIZED (use RGB 565) */ |
| 301 | value = (red & 0xF800)|((green >> 5) & 0x07E0)|((blue >> 11) & 0x001F); |
| 302 | value &= 0xFFFF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 304 | } else if (panel_is_color(fbdev->panel)) { |
| 305 | /* COLOR STN MODE */ |
| 306 | value = (((panel_swap_rgb(fbdev->panel) ? blue : red) >> 12) & 0x000F) | |
| 307 | ((green >> 8) & 0x00F0) | |
| 308 | (((panel_swap_rgb(fbdev->panel) ? red : blue) >> 4) & 0x0F00); |
| 309 | value &= 0xFFF; |
| 310 | } else { |
| 311 | /* MONOCHROME MODE */ |
| 312 | value = (green >> 12) & 0x000F; |
| 313 | value &= 0xF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | } |
| 315 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 316 | palette[regno] = value; |
| 317 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | return 0; |
| 319 | } |
| 320 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 321 | /* fb_pan_display |
| 322 | * Pan display in x and/or y as specified |
| 323 | */ |
| 324 | int au1100fb_fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *fbi) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | { |
Rodolfo Giometti | c05b7f3 | 2006-05-30 21:26:57 -0700 | [diff] [blame] | 326 | struct au1100fb_device *fbdev; |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 327 | int dy; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | |
Rodolfo Giometti | c05b7f3 | 2006-05-30 21:26:57 -0700 | [diff] [blame] | 329 | fbdev = to_au1100fb_device(fbi); |
| 330 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 331 | print_dbg("fb_pan_display %p %p", var, fbi); |
| 332 | |
| 333 | if (!var || !fbdev) { |
| 334 | return -EINVAL; |
| 335 | } |
| 336 | |
| 337 | if (var->xoffset - fbi->var.xoffset) { |
| 338 | /* No support for X panning for now! */ |
| 339 | return -EINVAL; |
| 340 | } |
| 341 | |
| 342 | print_dbg("fb_pan_display 2 %p %p", var, fbi); |
| 343 | dy = var->yoffset - fbi->var.yoffset; |
| 344 | if (dy) { |
| 345 | |
| 346 | u32 dmaaddr; |
| 347 | |
| 348 | print_dbg("Panning screen of %d lines", dy); |
| 349 | |
| 350 | dmaaddr = fbdev->regs->lcd_dmaaddr0; |
| 351 | dmaaddr += (fbi->fix.line_length * dy); |
| 352 | |
| 353 | /* TODO: Wait for current frame to finished */ |
| 354 | fbdev->regs->lcd_dmaaddr0 = LCD_DMA_SA_N(dmaaddr); |
| 355 | |
| 356 | if (panel_is_dual(fbdev->panel)) { |
| 357 | dmaaddr = fbdev->regs->lcd_dmaaddr1; |
| 358 | dmaaddr += (fbi->fix.line_length * dy); |
| 359 | fbdev->regs->lcd_dmaaddr0 = LCD_DMA_SA_N(dmaaddr); |
| 360 | } |
| 361 | } |
| 362 | print_dbg("fb_pan_display 3 %p %p", var, fbi); |
| 363 | |
| 364 | return 0; |
| 365 | } |
| 366 | |
| 367 | /* fb_rotate |
| 368 | * Rotate the display of this angle. This doesn't seems to be used by the core, |
| 369 | * but as our hardware supports it, so why not implementing it... |
| 370 | */ |
| 371 | void au1100fb_fb_rotate(struct fb_info *fbi, int angle) |
| 372 | { |
| 373 | struct au1100fb_device *fbdev = to_au1100fb_device(fbi); |
| 374 | |
| 375 | print_dbg("fb_rotate %p %d", fbi, angle); |
| 376 | |
| 377 | if (fbdev && (angle > 0) && !(angle % 90)) { |
| 378 | |
| 379 | fbdev->regs->lcd_control &= ~LCD_CONTROL_GO; |
| 380 | |
| 381 | fbdev->regs->lcd_control &= ~(LCD_CONTROL_SM_MASK); |
| 382 | fbdev->regs->lcd_control |= ((angle/90) << LCD_CONTROL_SM_BIT); |
| 383 | |
| 384 | fbdev->regs->lcd_control |= LCD_CONTROL_GO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | } |
| 386 | } |
| 387 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 388 | /* fb_mmap |
| 389 | * Map video memory in user space. We don't use the generic fb_mmap method mainly |
| 390 | * to allow the use of the TLB streaming flag (CCA=6) |
| 391 | */ |
Christoph Hellwig | 216d526 | 2006-01-14 13:21:25 -0800 | [diff] [blame] | 392 | int au1100fb_fb_mmap(struct fb_info *fbi, struct vm_area_struct *vma) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | { |
Rodolfo Giometti | c05b7f3 | 2006-05-30 21:26:57 -0700 | [diff] [blame] | 394 | struct au1100fb_device *fbdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | unsigned int len; |
| 396 | unsigned long start=0, off; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | |
Rodolfo Giometti | c05b7f3 | 2006-05-30 21:26:57 -0700 | [diff] [blame] | 398 | fbdev = to_au1100fb_device(fbi); |
| 399 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) { |
| 401 | return -EINVAL; |
| 402 | } |
| 403 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 404 | start = fbdev->fb_phys & PAGE_MASK; |
| 405 | len = PAGE_ALIGN((start & ~PAGE_MASK) + fbdev->fb_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | |
| 407 | off = vma->vm_pgoff << PAGE_SHIFT; |
| 408 | |
| 409 | if ((vma->vm_end - vma->vm_start + off) > len) { |
| 410 | return -EINVAL; |
| 411 | } |
| 412 | |
| 413 | off += start; |
| 414 | vma->vm_pgoff = off >> PAGE_SHIFT; |
| 415 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 416 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | pgprot_val(vma->vm_page_prot) |= (6 << 9); //CCA=6 |
| 418 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | vma->vm_flags |= VM_IO; |
| 420 | |
Freddy Spierenburg | cacfc8c | 2006-02-24 13:04:17 -0800 | [diff] [blame] | 421 | if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | vma->vm_end - vma->vm_start, |
| 423 | vma->vm_page_prot)) { |
| 424 | return -EAGAIN; |
| 425 | } |
| 426 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | return 0; |
| 428 | } |
| 429 | |
Rodolfo Giometti | ca27ac4 | 2006-10-03 01:14:36 -0700 | [diff] [blame] | 430 | /* fb_cursor |
| 431 | * Used to disable cursor drawing... |
| 432 | */ |
| 433 | int au1100fb_fb_cursor(struct fb_info *info, struct fb_cursor *cursor) |
| 434 | { |
| 435 | if (nocursor) |
| 436 | return 0; |
| 437 | else |
| 438 | return -EINVAL; /* just to force soft_cursor() call */ |
| 439 | } |
| 440 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 441 | static struct fb_ops au1100fb_ops = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | { |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 443 | .owner = THIS_MODULE, |
| 444 | .fb_setcolreg = au1100fb_fb_setcolreg, |
| 445 | .fb_blank = au1100fb_fb_blank, |
| 446 | .fb_pan_display = au1100fb_fb_pan_display, |
| 447 | .fb_fillrect = cfb_fillrect, |
| 448 | .fb_copyarea = cfb_copyarea, |
| 449 | .fb_imageblit = cfb_imageblit, |
| 450 | .fb_rotate = au1100fb_fb_rotate, |
| 451 | .fb_mmap = au1100fb_fb_mmap, |
Rodolfo Giometti | ca27ac4 | 2006-10-03 01:14:36 -0700 | [diff] [blame] | 452 | .fb_cursor = au1100fb_fb_cursor, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | }; |
| 454 | |
| 455 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 456 | /*-------------------------------------------------------------------------*/ |
| 457 | |
| 458 | /* AU1100 LCD controller device driver */ |
| 459 | |
Ralf Baechle | 0c42ea3 | 2007-10-18 03:04:30 -0700 | [diff] [blame^] | 460 | static int __init au1100fb_drv_probe(struct device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | { |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 462 | struct au1100fb_device *fbdev = NULL; |
| 463 | struct resource *regs_res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | unsigned long page; |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 465 | u32 sys_clksrc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 467 | if (!dev) |
| 468 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 470 | /* Allocate new device private */ |
Jiri Slaby | f5610b9 | 2007-02-12 00:55:12 -0800 | [diff] [blame] | 471 | if (!(fbdev = kzalloc(sizeof(struct au1100fb_device), GFP_KERNEL))) { |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 472 | print_err("fail to allocate device private record"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | return -ENOMEM; |
| 474 | } |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 475 | |
| 476 | fbdev->panel = &known_lcd_panels[drv_info.panel_idx]; |
| 477 | |
| 478 | dev_set_drvdata(dev, (void*)fbdev); |
| 479 | |
| 480 | /* Allocate region for our registers and map them */ |
| 481 | if (!(regs_res = platform_get_resource(to_platform_device(dev), |
| 482 | IORESOURCE_MEM, 0))) { |
| 483 | print_err("fail to retrieve registers resource"); |
| 484 | return -EFAULT; |
| 485 | } |
| 486 | |
| 487 | au1100fb_fix.mmio_start = regs_res->start; |
| 488 | au1100fb_fix.mmio_len = regs_res->end - regs_res->start + 1; |
| 489 | |
| 490 | if (!request_mem_region(au1100fb_fix.mmio_start, au1100fb_fix.mmio_len, |
| 491 | DRIVER_NAME)) { |
Rodolfo Giometti | c05b7f3 | 2006-05-30 21:26:57 -0700 | [diff] [blame] | 492 | print_err("fail to lock memory region at 0x%08lx", |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 493 | au1100fb_fix.mmio_start); |
| 494 | return -EBUSY; |
| 495 | } |
| 496 | |
| 497 | fbdev->regs = (struct au1100fb_regs*)KSEG1ADDR(au1100fb_fix.mmio_start); |
| 498 | |
| 499 | print_dbg("Register memory map at %p", fbdev->regs); |
| 500 | print_dbg("phys=0x%08x, size=%d", fbdev->regs_phys, fbdev->regs_len); |
| 501 | |
| 502 | |
| 503 | |
| 504 | /* Allocate the framebuffer to the maximum screen size * nbr of video buffers */ |
| 505 | fbdev->fb_len = fbdev->panel->xres * fbdev->panel->yres * |
| 506 | (fbdev->panel->bpp >> 3) * AU1100FB_NBR_VIDEO_BUFFERS; |
| 507 | |
| 508 | fbdev->fb_mem = dma_alloc_coherent(dev, PAGE_ALIGN(fbdev->fb_len), |
| 509 | &fbdev->fb_phys, GFP_KERNEL); |
| 510 | if (!fbdev->fb_mem) { |
| 511 | print_err("fail to allocate frambuffer (size: %dK))", |
| 512 | fbdev->fb_len / 1024); |
| 513 | return -ENOMEM; |
| 514 | } |
| 515 | |
| 516 | au1100fb_fix.smem_start = fbdev->fb_phys; |
| 517 | au1100fb_fix.smem_len = fbdev->fb_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | |
| 519 | /* |
| 520 | * Set page reserved so that mmap will work. This is necessary |
| 521 | * since we'll be remapping normal memory. |
| 522 | */ |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 523 | for (page = (unsigned long)fbdev->fb_mem; |
| 524 | page < PAGE_ALIGN((unsigned long)fbdev->fb_mem + fbdev->fb_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | page += PAGE_SIZE) { |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 526 | #if CONFIG_DMA_NONCOHERENT |
| 527 | SetPageReserved(virt_to_page(CAC_ADDR(page))); |
| 528 | #else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | SetPageReserved(virt_to_page(page)); |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 530 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 531 | } |
| 532 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 533 | print_dbg("Framebuffer memory map at %p", fbdev->fb_mem); |
| 534 | print_dbg("phys=0x%08x, size=%dK", fbdev->fb_phys, fbdev->fb_len / 1024); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 536 | /* Setup LCD clock to AUX (48 MHz) */ |
| 537 | sys_clksrc = au_readl(SYS_CLKSRC) & ~(SYS_CS_ML_MASK | SYS_CS_DL | SYS_CS_CL); |
| 538 | au_writel((sys_clksrc | (1 << SYS_CS_ML_BIT)), SYS_CLKSRC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 540 | /* load the panel info into the var struct */ |
| 541 | au1100fb_var.bits_per_pixel = fbdev->panel->bpp; |
| 542 | au1100fb_var.xres = fbdev->panel->xres; |
| 543 | au1100fb_var.xres_virtual = au1100fb_var.xres; |
| 544 | au1100fb_var.yres = fbdev->panel->yres; |
| 545 | au1100fb_var.yres_virtual = au1100fb_var.yres; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 547 | fbdev->info.screen_base = fbdev->fb_mem; |
| 548 | fbdev->info.fbops = &au1100fb_ops; |
| 549 | fbdev->info.fix = au1100fb_fix; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | |
Jiri Slaby | f5610b9 | 2007-02-12 00:55:12 -0800 | [diff] [blame] | 551 | if (!(fbdev->info.pseudo_palette = kzalloc(sizeof(u32) * 16, GFP_KERNEL))) { |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 552 | return -ENOMEM; |
| 553 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 554 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 555 | if (fb_alloc_cmap(&fbdev->info.cmap, AU1100_LCD_NBR_PALETTE_ENTRIES, 0) < 0) { |
| 556 | print_err("Fail to allocate colormap (%d entries)", |
| 557 | AU1100_LCD_NBR_PALETTE_ENTRIES); |
| 558 | kfree(fbdev->info.pseudo_palette); |
| 559 | return -EFAULT; |
| 560 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 562 | fbdev->info.var = au1100fb_var; |
| 563 | |
| 564 | /* Set h/w registers */ |
| 565 | au1100fb_setmode(fbdev); |
| 566 | |
| 567 | /* Register new framebuffer */ |
| 568 | if (register_framebuffer(&fbdev->info) < 0) { |
| 569 | print_err("cannot register new framebuffer"); |
| 570 | goto failed; |
| 571 | } |
| 572 | |
| 573 | return 0; |
| 574 | |
| 575 | failed: |
| 576 | if (fbdev->regs) { |
| 577 | release_mem_region(fbdev->regs_phys, fbdev->regs_len); |
| 578 | } |
| 579 | if (fbdev->fb_mem) { |
| 580 | dma_free_noncoherent(dev, fbdev->fb_len, fbdev->fb_mem, fbdev->fb_phys); |
| 581 | } |
| 582 | if (fbdev->info.cmap.len != 0) { |
| 583 | fb_dealloc_cmap(&fbdev->info.cmap); |
| 584 | } |
| 585 | kfree(fbdev); |
| 586 | dev_set_drvdata(dev, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | |
| 588 | return 0; |
| 589 | } |
| 590 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 591 | int au1100fb_drv_remove(struct device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | { |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 593 | struct au1100fb_device *fbdev = NULL; |
| 594 | |
| 595 | if (!dev) |
| 596 | return -ENODEV; |
| 597 | |
| 598 | fbdev = (struct au1100fb_device*) dev_get_drvdata(dev); |
| 599 | |
| 600 | #if !defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_LOGO) |
| 601 | au1100fb_fb_blank(VESA_POWERDOWN, &fbdev->info); |
| 602 | #endif |
| 603 | fbdev->regs->lcd_control &= ~LCD_CONTROL_GO; |
| 604 | |
| 605 | /* Clean up all probe data */ |
| 606 | unregister_framebuffer(&fbdev->info); |
| 607 | |
| 608 | release_mem_region(fbdev->regs_phys, fbdev->regs_len); |
| 609 | |
| 610 | dma_free_coherent(dev, PAGE_ALIGN(fbdev->fb_len), fbdev->fb_mem, fbdev->fb_phys); |
| 611 | |
| 612 | fb_dealloc_cmap(&fbdev->info.cmap); |
| 613 | kfree(fbdev->info.pseudo_palette); |
| 614 | kfree((void*)fbdev); |
| 615 | |
| 616 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | } |
| 618 | |
Rodolfo Giometti | f77f50c | 2006-06-26 00:26:49 -0700 | [diff] [blame] | 619 | #ifdef CONFIG_PM |
| 620 | static u32 sys_clksrc; |
| 621 | static struct au1100fb_regs fbregs; |
| 622 | |
Rodolfo Giometti | c05b7f3 | 2006-05-30 21:26:57 -0700 | [diff] [blame] | 623 | int au1100fb_drv_suspend(struct device *dev, pm_message_t state) |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 624 | { |
Rodolfo Giometti | f77f50c | 2006-06-26 00:26:49 -0700 | [diff] [blame] | 625 | struct au1100fb_device *fbdev = dev_get_drvdata(dev); |
| 626 | |
| 627 | if (!fbdev) |
| 628 | return 0; |
| 629 | |
| 630 | /* Save the clock source state */ |
| 631 | sys_clksrc = au_readl(SYS_CLKSRC); |
| 632 | |
| 633 | /* Blank the LCD */ |
| 634 | au1100fb_fb_blank(VESA_POWERDOWN, &fbdev->info); |
| 635 | |
| 636 | /* Stop LCD clocking */ |
| 637 | au_writel(sys_clksrc & ~SYS_CS_ML_MASK, SYS_CLKSRC); |
| 638 | |
| 639 | memcpy(&fbregs, fbdev->regs, sizeof(struct au1100fb_regs)); |
| 640 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 641 | return 0; |
| 642 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | |
Rodolfo Giometti | c05b7f3 | 2006-05-30 21:26:57 -0700 | [diff] [blame] | 644 | int au1100fb_drv_resume(struct device *dev) |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 645 | { |
Rodolfo Giometti | f77f50c | 2006-06-26 00:26:49 -0700 | [diff] [blame] | 646 | struct au1100fb_device *fbdev = dev_get_drvdata(dev); |
| 647 | |
| 648 | if (!fbdev) |
| 649 | return 0; |
| 650 | |
| 651 | memcpy(fbdev->regs, &fbregs, sizeof(struct au1100fb_regs)); |
| 652 | |
| 653 | /* Restart LCD clocking */ |
| 654 | au_writel(sys_clksrc, SYS_CLKSRC); |
| 655 | |
| 656 | /* Unblank the LCD */ |
| 657 | au1100fb_fb_blank(VESA_NO_BLANKING, &fbdev->info); |
| 658 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 659 | return 0; |
| 660 | } |
Rodolfo Giometti | f77f50c | 2006-06-26 00:26:49 -0700 | [diff] [blame] | 661 | #else |
| 662 | #define au1100fb_drv_suspend NULL |
| 663 | #define au1100fb_drv_resume NULL |
| 664 | #endif |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 665 | |
| 666 | static struct device_driver au1100fb_driver = { |
| 667 | .name = "au1100-lcd", |
| 668 | .bus = &platform_bus_type, |
| 669 | |
| 670 | .probe = au1100fb_drv_probe, |
| 671 | .remove = au1100fb_drv_remove, |
| 672 | .suspend = au1100fb_drv_suspend, |
| 673 | .resume = au1100fb_drv_resume, |
| 674 | }; |
| 675 | |
| 676 | /*-------------------------------------------------------------------------*/ |
| 677 | |
| 678 | /* Kernel driver */ |
| 679 | |
| 680 | int au1100fb_setup(char *options) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | { |
| 682 | char* this_opt; |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 683 | int num_panels = ARRAY_SIZE(known_lcd_panels); |
| 684 | char* mode = NULL; |
| 685 | int panel_idx = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 686 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 687 | if (num_panels <= 0) { |
| 688 | print_err("No LCD panels supported by driver!"); |
| 689 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | } |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 691 | |
| 692 | if (options) { |
| 693 | while ((this_opt = strsep(&options,",")) != NULL) { |
| 694 | /* Panel option */ |
Rodolfo Giometti | ca27ac4 | 2006-10-03 01:14:36 -0700 | [diff] [blame] | 695 | if (!strncmp(this_opt, "panel:", 6)) { |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 696 | int i; |
| 697 | this_opt += 6; |
| 698 | for (i = 0; i < num_panels; i++) { |
| 699 | if (!strncmp(this_opt, |
| 700 | known_lcd_panels[i].name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | strlen(this_opt))) { |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 702 | panel_idx = i; |
Rodolfo Giometti | ca27ac4 | 2006-10-03 01:14:36 -0700 | [diff] [blame] | 703 | break; |
| 704 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | } |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 706 | if (i >= num_panels) { |
| 707 | print_warn("Panel %s not supported!", this_opt); |
| 708 | } |
| 709 | } |
Rodolfo Giometti | ca27ac4 | 2006-10-03 01:14:36 -0700 | [diff] [blame] | 710 | if (!strncmp(this_opt, "nocursor", 8)) { |
| 711 | this_opt += 8; |
| 712 | nocursor = 1; |
| 713 | print_info("Cursor disabled"); |
| 714 | } |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 715 | /* Mode option (only option that start with digit) */ |
| 716 | else if (isdigit(this_opt[0])) { |
| 717 | mode = kmalloc(strlen(this_opt) + 1, GFP_KERNEL); |
| 718 | strncpy(mode, this_opt, strlen(this_opt) + 1); |
| 719 | } |
| 720 | /* Unsupported option */ |
| 721 | else { |
| 722 | print_warn("Unsupported option \"%s\"", this_opt); |
Rodolfo Giometti | ca27ac4 | 2006-10-03 01:14:36 -0700 | [diff] [blame] | 723 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | } |
| 725 | } |
| 726 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 727 | drv_info.panel_idx = panel_idx; |
| 728 | drv_info.opt_mode = mode; |
| 729 | |
| 730 | print_info("Panel=%s Mode=%s", |
| 731 | known_lcd_panels[drv_info.panel_idx].name, |
| 732 | drv_info.opt_mode ? drv_info.opt_mode : "default"); |
| 733 | |
| 734 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 735 | } |
| 736 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 737 | int __init au1100fb_init(void) |
| 738 | { |
| 739 | char* options; |
| 740 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 742 | print_info("" DRIVER_DESC ""); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 744 | memset(&drv_info, 0, sizeof(drv_info)); |
| 745 | |
| 746 | if (fb_get_options(DRIVER_NAME, &options)) |
| 747 | return -ENODEV; |
| 748 | |
| 749 | /* Setup driver with options */ |
| 750 | ret = au1100fb_setup(options); |
| 751 | if (ret < 0) { |
| 752 | print_err("Fail to setup driver"); |
| 753 | return ret; |
| 754 | } |
| 755 | |
| 756 | return driver_register(&au1100fb_driver); |
| 757 | } |
| 758 | |
| 759 | void __exit au1100fb_cleanup(void) |
| 760 | { |
| 761 | driver_unregister(&au1100fb_driver); |
| 762 | |
Jesper Juhl | 8f76078 | 2006-06-27 02:55:06 -0700 | [diff] [blame] | 763 | kfree(drv_info.opt_mode); |
Pete Popov | 3b495f2 | 2005-04-04 01:06:19 +0000 | [diff] [blame] | 764 | } |
| 765 | |
| 766 | module_init(au1100fb_init); |
| 767 | module_exit(au1100fb_cleanup); |
| 768 | |
| 769 | MODULE_DESCRIPTION(DRIVER_DESC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 770 | MODULE_LICENSE("GPL"); |