Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/drivers/video/pxafb.c |
| 3 | * |
| 4 | * Copyright (C) 1999 Eric A. Thomas. |
| 5 | * Copyright (C) 2004 Jean-Frederic Clere. |
| 6 | * Copyright (C) 2004 Ian Campbell. |
| 7 | * Copyright (C) 2004 Jeff Lackey. |
| 8 | * Based on sa1100fb.c Copyright (C) 1999 Eric A. Thomas |
| 9 | * which in turn is |
| 10 | * Based on acornfb.c Copyright (C) Russell King. |
| 11 | * |
| 12 | * This file is subject to the terms and conditions of the GNU General Public |
| 13 | * License. See the file COPYING in the main directory of this archive for |
| 14 | * more details. |
| 15 | * |
| 16 | * Intel PXA250/210 LCD Controller Frame Buffer Driver |
| 17 | * |
| 18 | * Please direct your questions and comments on this driver to the following |
| 19 | * email address: |
| 20 | * |
| 21 | * linux-arm-kernel@lists.arm.linux.org.uk |
| 22 | * |
| 23 | */ |
| 24 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | #include <linux/module.h> |
| 26 | #include <linux/moduleparam.h> |
| 27 | #include <linux/kernel.h> |
| 28 | #include <linux/sched.h> |
| 29 | #include <linux/errno.h> |
| 30 | #include <linux/string.h> |
| 31 | #include <linux/interrupt.h> |
| 32 | #include <linux/slab.h> |
Andrea Righi | 27ac792 | 2008-07-23 21:28:13 -0700 | [diff] [blame] | 33 | #include <linux/mm.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #include <linux/fb.h> |
| 35 | #include <linux/delay.h> |
| 36 | #include <linux/init.h> |
| 37 | #include <linux/ioport.h> |
| 38 | #include <linux/cpufreq.h> |
Russell King | d052d1b | 2005-10-29 19:07:23 +0100 | [diff] [blame] | 39 | #include <linux/platform_device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #include <linux/dma-mapping.h> |
Russell King | 72e3524 | 2007-08-20 10:18:42 +0100 | [diff] [blame] | 41 | #include <linux/clk.h> |
| 42 | #include <linux/err.h> |
Eric Miao | 2ba162b | 2008-04-30 00:52:24 -0700 | [diff] [blame] | 43 | #include <linux/completion.h> |
Matthias Kaehlcke | b91dbce | 2008-07-23 21:31:14 -0700 | [diff] [blame] | 44 | #include <linux/mutex.h> |
Eric Miao | 3c42a44 | 2008-04-30 00:52:26 -0700 | [diff] [blame] | 45 | #include <linux/kthread.h> |
| 46 | #include <linux/freezer.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 48 | #include <mach/hardware.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | #include <asm/io.h> |
| 50 | #include <asm/irq.h> |
Nicolas Pitre | bf1b8ab | 2005-06-23 21:56:45 +0100 | [diff] [blame] | 51 | #include <asm/div64.h> |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 52 | #include <mach/pxa-regs.h> |
| 53 | #include <mach/pxa2xx-gpio.h> |
| 54 | #include <mach/bitfield.h> |
| 55 | #include <mach/pxafb.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | |
| 57 | /* |
| 58 | * Complain if VAR is out of range. |
| 59 | */ |
| 60 | #define DEBUG_VAR 1 |
| 61 | |
| 62 | #include "pxafb.h" |
| 63 | |
| 64 | /* Bits which should not be set in machine configuration structures */ |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 65 | #define LCCR0_INVALID_CONFIG_MASK (LCCR0_OUM | LCCR0_BM | LCCR0_QDM |\ |
| 66 | LCCR0_DIS | LCCR0_EFM | LCCR0_IUM |\ |
| 67 | LCCR0_SFM | LCCR0_LDM | LCCR0_ENB) |
| 68 | |
| 69 | #define LCCR3_INVALID_CONFIG_MASK (LCCR3_HSP | LCCR3_VSP |\ |
| 70 | LCCR3_PCD | LCCR3_BPP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | |
| 72 | static void (*pxafb_backlight_power)(int); |
Richard Purdie | d14b272 | 2006-09-20 22:54:21 +0100 | [diff] [blame] | 73 | static void (*pxafb_lcd_power)(int, struct fb_var_screeninfo *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 75 | static int pxafb_activate_var(struct fb_var_screeninfo *var, |
| 76 | struct pxafb_info *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | static void set_ctrlr_state(struct pxafb_info *fbi, u_int state); |
| 78 | |
Eric Miao | a7535ba | 2008-04-30 00:52:24 -0700 | [diff] [blame] | 79 | static inline unsigned long |
| 80 | lcd_readl(struct pxafb_info *fbi, unsigned int off) |
| 81 | { |
| 82 | return __raw_readl(fbi->mmio_base + off); |
| 83 | } |
| 84 | |
| 85 | static inline void |
| 86 | lcd_writel(struct pxafb_info *fbi, unsigned int off, unsigned long val) |
| 87 | { |
| 88 | __raw_writel(val, fbi->mmio_base + off); |
| 89 | } |
| 90 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | static inline void pxafb_schedule_work(struct pxafb_info *fbi, u_int state) |
| 92 | { |
| 93 | unsigned long flags; |
| 94 | |
| 95 | local_irq_save(flags); |
| 96 | /* |
| 97 | * We need to handle two requests being made at the same time. |
| 98 | * There are two important cases: |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 99 | * 1. When we are changing VT (C_REENABLE) while unblanking |
| 100 | * (C_ENABLE) We must perform the unblanking, which will |
| 101 | * do our REENABLE for us. |
| 102 | * 2. When we are blanking, but immediately unblank before |
| 103 | * we have blanked. We do the "REENABLE" thing here as |
| 104 | * well, just to be sure. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | */ |
| 106 | if (fbi->task_state == C_ENABLE && state == C_REENABLE) |
| 107 | state = (u_int) -1; |
| 108 | if (fbi->task_state == C_DISABLE && state == C_ENABLE) |
| 109 | state = C_REENABLE; |
| 110 | |
| 111 | if (state != (u_int)-1) { |
| 112 | fbi->task_state = state; |
| 113 | schedule_work(&fbi->task); |
| 114 | } |
| 115 | local_irq_restore(flags); |
| 116 | } |
| 117 | |
| 118 | static inline u_int chan_to_field(u_int chan, struct fb_bitfield *bf) |
| 119 | { |
| 120 | chan &= 0xffff; |
| 121 | chan >>= 16 - bf->length; |
| 122 | return chan << bf->offset; |
| 123 | } |
| 124 | |
| 125 | static int |
| 126 | pxafb_setpalettereg(u_int regno, u_int red, u_int green, u_int blue, |
| 127 | u_int trans, struct fb_info *info) |
| 128 | { |
| 129 | struct pxafb_info *fbi = (struct pxafb_info *)info; |
Hans J. Koch | 9ffa739 | 2007-10-16 01:28:41 -0700 | [diff] [blame] | 130 | u_int val; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | |
Hans J. Koch | 9ffa739 | 2007-10-16 01:28:41 -0700 | [diff] [blame] | 132 | if (regno >= fbi->palette_size) |
| 133 | return 1; |
| 134 | |
| 135 | if (fbi->fb.var.grayscale) { |
| 136 | fbi->palette_cpu[regno] = ((blue >> 8) & 0x00ff); |
| 137 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | } |
Hans J. Koch | 9ffa739 | 2007-10-16 01:28:41 -0700 | [diff] [blame] | 139 | |
| 140 | switch (fbi->lccr4 & LCCR4_PAL_FOR_MASK) { |
| 141 | case LCCR4_PAL_FOR_0: |
| 142 | val = ((red >> 0) & 0xf800); |
| 143 | val |= ((green >> 5) & 0x07e0); |
| 144 | val |= ((blue >> 11) & 0x001f); |
| 145 | fbi->palette_cpu[regno] = val; |
| 146 | break; |
| 147 | case LCCR4_PAL_FOR_1: |
| 148 | val = ((red << 8) & 0x00f80000); |
| 149 | val |= ((green >> 0) & 0x0000fc00); |
| 150 | val |= ((blue >> 8) & 0x000000f8); |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 151 | ((u32 *)(fbi->palette_cpu))[regno] = val; |
Hans J. Koch | 9ffa739 | 2007-10-16 01:28:41 -0700 | [diff] [blame] | 152 | break; |
| 153 | case LCCR4_PAL_FOR_2: |
| 154 | val = ((red << 8) & 0x00fc0000); |
| 155 | val |= ((green >> 0) & 0x0000fc00); |
| 156 | val |= ((blue >> 8) & 0x000000fc); |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 157 | ((u32 *)(fbi->palette_cpu))[regno] = val; |
Hans J. Koch | 9ffa739 | 2007-10-16 01:28:41 -0700 | [diff] [blame] | 158 | break; |
| 159 | } |
| 160 | |
| 161 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | } |
| 163 | |
| 164 | static int |
| 165 | pxafb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, |
| 166 | u_int trans, struct fb_info *info) |
| 167 | { |
| 168 | struct pxafb_info *fbi = (struct pxafb_info *)info; |
| 169 | unsigned int val; |
| 170 | int ret = 1; |
| 171 | |
| 172 | /* |
| 173 | * If inverse mode was selected, invert all the colours |
| 174 | * rather than the register number. The register number |
| 175 | * is what you poke into the framebuffer to produce the |
| 176 | * colour you requested. |
| 177 | */ |
| 178 | if (fbi->cmap_inverse) { |
| 179 | red = 0xffff - red; |
| 180 | green = 0xffff - green; |
| 181 | blue = 0xffff - blue; |
| 182 | } |
| 183 | |
| 184 | /* |
| 185 | * If greyscale is true, then we convert the RGB value |
| 186 | * to greyscale no matter what visual we are using. |
| 187 | */ |
| 188 | if (fbi->fb.var.grayscale) |
| 189 | red = green = blue = (19595 * red + 38470 * green + |
| 190 | 7471 * blue) >> 16; |
| 191 | |
| 192 | switch (fbi->fb.fix.visual) { |
| 193 | case FB_VISUAL_TRUECOLOR: |
| 194 | /* |
| 195 | * 16-bit True Colour. We encode the RGB value |
| 196 | * according to the RGB bitfield information. |
| 197 | */ |
| 198 | if (regno < 16) { |
| 199 | u32 *pal = fbi->fb.pseudo_palette; |
| 200 | |
| 201 | val = chan_to_field(red, &fbi->fb.var.red); |
| 202 | val |= chan_to_field(green, &fbi->fb.var.green); |
| 203 | val |= chan_to_field(blue, &fbi->fb.var.blue); |
| 204 | |
| 205 | pal[regno] = val; |
| 206 | ret = 0; |
| 207 | } |
| 208 | break; |
| 209 | |
| 210 | case FB_VISUAL_STATIC_PSEUDOCOLOR: |
| 211 | case FB_VISUAL_PSEUDOCOLOR: |
| 212 | ret = pxafb_setpalettereg(regno, red, green, blue, trans, info); |
| 213 | break; |
| 214 | } |
| 215 | |
| 216 | return ret; |
| 217 | } |
| 218 | |
| 219 | /* |
| 220 | * pxafb_bpp_to_lccr3(): |
| 221 | * Convert a bits per pixel value to the correct bit pattern for LCCR3 |
| 222 | */ |
| 223 | static int pxafb_bpp_to_lccr3(struct fb_var_screeninfo *var) |
| 224 | { |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 225 | int ret = 0; |
| 226 | switch (var->bits_per_pixel) { |
| 227 | case 1: ret = LCCR3_1BPP; break; |
| 228 | case 2: ret = LCCR3_2BPP; break; |
| 229 | case 4: ret = LCCR3_4BPP; break; |
| 230 | case 8: ret = LCCR3_8BPP; break; |
| 231 | case 16: ret = LCCR3_16BPP; break; |
Stefan Schmidt | c1450f1 | 2008-07-09 08:06:32 +0100 | [diff] [blame] | 232 | case 24: |
| 233 | switch (var->red.length + var->green.length + |
| 234 | var->blue.length + var->transp.length) { |
| 235 | case 18: ret = LCCR3_18BPP_P | LCCR3_PDFOR_3; break; |
| 236 | case 19: ret = LCCR3_19BPP_P; break; |
| 237 | } |
| 238 | break; |
| 239 | case 32: |
| 240 | switch (var->red.length + var->green.length + |
| 241 | var->blue.length + var->transp.length) { |
| 242 | case 18: ret = LCCR3_18BPP | LCCR3_PDFOR_3; break; |
| 243 | case 19: ret = LCCR3_19BPP; break; |
| 244 | case 24: ret = LCCR3_24BPP | LCCR3_PDFOR_3; break; |
| 245 | case 25: ret = LCCR3_25BPP; break; |
| 246 | } |
| 247 | break; |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 248 | } |
| 249 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | } |
| 251 | |
| 252 | #ifdef CONFIG_CPU_FREQ |
| 253 | /* |
| 254 | * pxafb_display_dma_period() |
| 255 | * Calculate the minimum period (in picoseconds) between two DMA |
| 256 | * requests for the LCD controller. If we hit this, it means we're |
| 257 | * doing nothing but LCD DMA. |
| 258 | */ |
| 259 | static unsigned int pxafb_display_dma_period(struct fb_var_screeninfo *var) |
| 260 | { |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 261 | /* |
| 262 | * Period = pixclock * bits_per_byte * bytes_per_transfer |
| 263 | * / memory_bits_per_pixel; |
| 264 | */ |
| 265 | return var->pixclock * 8 * 16 / var->bits_per_pixel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | #endif |
| 268 | |
| 269 | /* |
Richard Purdie | d14b272 | 2006-09-20 22:54:21 +0100 | [diff] [blame] | 270 | * Select the smallest mode that allows the desired resolution to be |
| 271 | * displayed. If desired parameters can be rounded up. |
| 272 | */ |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 273 | static struct pxafb_mode_info *pxafb_getmode(struct pxafb_mach_info *mach, |
| 274 | struct fb_var_screeninfo *var) |
Richard Purdie | d14b272 | 2006-09-20 22:54:21 +0100 | [diff] [blame] | 275 | { |
| 276 | struct pxafb_mode_info *mode = NULL; |
| 277 | struct pxafb_mode_info *modelist = mach->modes; |
| 278 | unsigned int best_x = 0xffffffff, best_y = 0xffffffff; |
| 279 | unsigned int i; |
| 280 | |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 281 | for (i = 0; i < mach->num_modes; i++) { |
| 282 | if (modelist[i].xres >= var->xres && |
| 283 | modelist[i].yres >= var->yres && |
| 284 | modelist[i].xres < best_x && |
| 285 | modelist[i].yres < best_y && |
| 286 | modelist[i].bpp >= var->bits_per_pixel) { |
Richard Purdie | d14b272 | 2006-09-20 22:54:21 +0100 | [diff] [blame] | 287 | best_x = modelist[i].xres; |
| 288 | best_y = modelist[i].yres; |
| 289 | mode = &modelist[i]; |
| 290 | } |
| 291 | } |
| 292 | |
| 293 | return mode; |
| 294 | } |
| 295 | |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 296 | static void pxafb_setmode(struct fb_var_screeninfo *var, |
| 297 | struct pxafb_mode_info *mode) |
Richard Purdie | d14b272 | 2006-09-20 22:54:21 +0100 | [diff] [blame] | 298 | { |
| 299 | var->xres = mode->xres; |
| 300 | var->yres = mode->yres; |
| 301 | var->bits_per_pixel = mode->bpp; |
| 302 | var->pixclock = mode->pixclock; |
| 303 | var->hsync_len = mode->hsync_len; |
| 304 | var->left_margin = mode->left_margin; |
| 305 | var->right_margin = mode->right_margin; |
| 306 | var->vsync_len = mode->vsync_len; |
| 307 | var->upper_margin = mode->upper_margin; |
| 308 | var->lower_margin = mode->lower_margin; |
| 309 | var->sync = mode->sync; |
| 310 | var->grayscale = mode->cmap_greyscale; |
| 311 | var->xres_virtual = var->xres; |
| 312 | var->yres_virtual = var->yres; |
| 313 | } |
| 314 | |
| 315 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | * pxafb_check_var(): |
| 317 | * Get the video params out of 'var'. If a value doesn't fit, round it up, |
| 318 | * if it's too big, return -EINVAL. |
| 319 | * |
| 320 | * Round up in the following order: bits_per_pixel, xres, |
| 321 | * yres, xres_virtual, yres_virtual, xoffset, yoffset, grayscale, |
| 322 | * bitfields, horizontal timing, vertical timing. |
| 323 | */ |
| 324 | static int pxafb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) |
| 325 | { |
| 326 | struct pxafb_info *fbi = (struct pxafb_info *)info; |
Richard Purdie | d14b272 | 2006-09-20 22:54:21 +0100 | [diff] [blame] | 327 | struct pxafb_mach_info *inf = fbi->dev->platform_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | |
| 329 | if (var->xres < MIN_XRES) |
| 330 | var->xres = MIN_XRES; |
| 331 | if (var->yres < MIN_YRES) |
| 332 | var->yres = MIN_YRES; |
Richard Purdie | d14b272 | 2006-09-20 22:54:21 +0100 | [diff] [blame] | 333 | |
| 334 | if (inf->fixed_modes) { |
| 335 | struct pxafb_mode_info *mode; |
| 336 | |
| 337 | mode = pxafb_getmode(inf, var); |
| 338 | if (!mode) |
| 339 | return -EINVAL; |
| 340 | pxafb_setmode(var, mode); |
| 341 | } else { |
| 342 | if (var->xres > inf->modes->xres) |
| 343 | return -EINVAL; |
| 344 | if (var->yres > inf->modes->yres) |
| 345 | return -EINVAL; |
| 346 | if (var->bits_per_pixel > inf->modes->bpp) |
| 347 | return -EINVAL; |
| 348 | } |
| 349 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | var->xres_virtual = |
| 351 | max(var->xres_virtual, var->xres); |
| 352 | var->yres_virtual = |
| 353 | max(var->yres_virtual, var->yres); |
| 354 | |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 355 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | * Setup the RGB parameters for this display. |
| 357 | * |
| 358 | * The pixel packing format is described on page 7-11 of the |
| 359 | * PXA2XX Developer's Manual. |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 360 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | if (var->bits_per_pixel == 16) { |
| 362 | var->red.offset = 11; var->red.length = 5; |
| 363 | var->green.offset = 5; var->green.length = 6; |
| 364 | var->blue.offset = 0; var->blue.length = 5; |
| 365 | var->transp.offset = var->transp.length = 0; |
Stefan Schmidt | c1450f1 | 2008-07-09 08:06:32 +0100 | [diff] [blame] | 366 | } else if (var->bits_per_pixel > 16) { |
| 367 | struct pxafb_mode_info *mode; |
| 368 | |
| 369 | mode = pxafb_getmode(inf, var); |
| 370 | if (!mode) |
| 371 | return -EINVAL; |
| 372 | |
| 373 | switch (mode->depth) { |
| 374 | case 18: /* RGB666 */ |
| 375 | var->transp.offset = var->transp.length = 0; |
| 376 | var->red.offset = 12; var->red.length = 6; |
| 377 | var->green.offset = 6; var->green.length = 6; |
| 378 | var->blue.offset = 0; var->blue.length = 6; |
| 379 | break; |
| 380 | case 19: /* RGBT666 */ |
| 381 | var->transp.offset = 18; var->transp.length = 1; |
| 382 | var->red.offset = 12; var->red.length = 6; |
| 383 | var->green.offset = 6; var->green.length = 6; |
| 384 | var->blue.offset = 0; var->blue.length = 6; |
| 385 | break; |
| 386 | case 24: /* RGB888 */ |
| 387 | var->transp.offset = var->transp.length = 0; |
| 388 | var->red.offset = 16; var->red.length = 8; |
| 389 | var->green.offset = 8; var->green.length = 8; |
| 390 | var->blue.offset = 0; var->blue.length = 8; |
| 391 | break; |
| 392 | case 25: /* RGBT888 */ |
| 393 | var->transp.offset = 24; var->transp.length = 1; |
| 394 | var->red.offset = 16; var->red.length = 8; |
| 395 | var->green.offset = 8; var->green.length = 8; |
| 396 | var->blue.offset = 0; var->blue.length = 8; |
| 397 | break; |
| 398 | default: |
| 399 | return -EINVAL; |
| 400 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | } else { |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 402 | var->red.offset = var->green.offset = 0; |
| 403 | var->blue.offset = var->transp.offset = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | var->red.length = 8; |
| 405 | var->green.length = 8; |
| 406 | var->blue.length = 8; |
| 407 | var->transp.length = 0; |
| 408 | } |
| 409 | |
| 410 | #ifdef CONFIG_CPU_FREQ |
Russell King | 78d3cfd | 2008-05-17 22:51:14 +0100 | [diff] [blame] | 411 | pr_debug("pxafb: dma period = %d ps\n", |
| 412 | pxafb_display_dma_period(var)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | #endif |
| 414 | |
| 415 | return 0; |
| 416 | } |
| 417 | |
| 418 | static inline void pxafb_set_truecolor(u_int is_true_color) |
| 419 | { |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 420 | /* do your machine-specific setup if needed */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | } |
| 422 | |
| 423 | /* |
| 424 | * pxafb_set_par(): |
| 425 | * Set the user defined part of the display for the specified console |
| 426 | */ |
| 427 | static int pxafb_set_par(struct fb_info *info) |
| 428 | { |
| 429 | struct pxafb_info *fbi = (struct pxafb_info *)info; |
| 430 | struct fb_var_screeninfo *var = &info->var; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | |
Stefan Schmidt | c1450f1 | 2008-07-09 08:06:32 +0100 | [diff] [blame] | 432 | if (var->bits_per_pixel >= 16) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | fbi->fb.fix.visual = FB_VISUAL_TRUECOLOR; |
| 434 | else if (!fbi->cmap_static) |
| 435 | fbi->fb.fix.visual = FB_VISUAL_PSEUDOCOLOR; |
| 436 | else { |
| 437 | /* |
| 438 | * Some people have weird ideas about wanting static |
| 439 | * pseudocolor maps. I suspect their user space |
| 440 | * applications are broken. |
| 441 | */ |
| 442 | fbi->fb.fix.visual = FB_VISUAL_STATIC_PSEUDOCOLOR; |
| 443 | } |
| 444 | |
| 445 | fbi->fb.fix.line_length = var->xres_virtual * |
| 446 | var->bits_per_pixel / 8; |
Stefan Schmidt | c1450f1 | 2008-07-09 08:06:32 +0100 | [diff] [blame] | 447 | if (var->bits_per_pixel >= 16) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | fbi->palette_size = 0; |
| 449 | else |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 450 | fbi->palette_size = var->bits_per_pixel == 1 ? |
| 451 | 4 : 1 << var->bits_per_pixel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | |
eric miao | 2c42dd8 | 2008-04-30 00:52:21 -0700 | [diff] [blame] | 453 | fbi->palette_cpu = (u16 *)&fbi->dma_buff->palette[0]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | |
| 455 | /* |
| 456 | * Set (any) board control register to handle new color depth |
| 457 | */ |
| 458 | pxafb_set_truecolor(fbi->fb.fix.visual == FB_VISUAL_TRUECOLOR); |
| 459 | |
Stefan Schmidt | c1450f1 | 2008-07-09 08:06:32 +0100 | [diff] [blame] | 460 | if (fbi->fb.var.bits_per_pixel >= 16) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | fb_dealloc_cmap(&fbi->fb.cmap); |
| 462 | else |
| 463 | fb_alloc_cmap(&fbi->fb.cmap, 1<<fbi->fb.var.bits_per_pixel, 0); |
| 464 | |
| 465 | pxafb_activate_var(var, fbi); |
| 466 | |
| 467 | return 0; |
| 468 | } |
| 469 | |
| 470 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | * pxafb_blank(): |
| 472 | * Blank the display by setting all palette values to zero. Note, the |
| 473 | * 16 bpp mode does not really use the palette, so this will not |
| 474 | * blank the display in all modes. |
| 475 | */ |
| 476 | static int pxafb_blank(int blank, struct fb_info *info) |
| 477 | { |
| 478 | struct pxafb_info *fbi = (struct pxafb_info *)info; |
| 479 | int i; |
| 480 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | switch (blank) { |
| 482 | case FB_BLANK_POWERDOWN: |
| 483 | case FB_BLANK_VSYNC_SUSPEND: |
| 484 | case FB_BLANK_HSYNC_SUSPEND: |
| 485 | case FB_BLANK_NORMAL: |
| 486 | if (fbi->fb.fix.visual == FB_VISUAL_PSEUDOCOLOR || |
| 487 | fbi->fb.fix.visual == FB_VISUAL_STATIC_PSEUDOCOLOR) |
| 488 | for (i = 0; i < fbi->palette_size; i++) |
| 489 | pxafb_setpalettereg(i, 0, 0, 0, 0, info); |
| 490 | |
| 491 | pxafb_schedule_work(fbi, C_DISABLE); |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 492 | /* TODO if (pxafb_blank_helper) pxafb_blank_helper(blank); */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | break; |
| 494 | |
| 495 | case FB_BLANK_UNBLANK: |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 496 | /* TODO if (pxafb_blank_helper) pxafb_blank_helper(blank); */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | if (fbi->fb.fix.visual == FB_VISUAL_PSEUDOCOLOR || |
| 498 | fbi->fb.fix.visual == FB_VISUAL_STATIC_PSEUDOCOLOR) |
| 499 | fb_set_cmap(&fbi->fb.cmap, info); |
| 500 | pxafb_schedule_work(fbi, C_ENABLE); |
| 501 | } |
| 502 | return 0; |
| 503 | } |
| 504 | |
Christoph Hellwig | 216d526 | 2006-01-14 13:21:25 -0800 | [diff] [blame] | 505 | static int pxafb_mmap(struct fb_info *info, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | struct vm_area_struct *vma) |
| 507 | { |
| 508 | struct pxafb_info *fbi = (struct pxafb_info *)info; |
| 509 | unsigned long off = vma->vm_pgoff << PAGE_SHIFT; |
| 510 | |
| 511 | if (off < info->fix.smem_len) { |
Eric Miao | 3c42a44 | 2008-04-30 00:52:26 -0700 | [diff] [blame] | 512 | vma->vm_pgoff += fbi->video_offset / PAGE_SIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | return dma_mmap_writecombine(fbi->dev, vma, fbi->map_cpu, |
| 514 | fbi->map_dma, fbi->map_size); |
| 515 | } |
| 516 | return -EINVAL; |
| 517 | } |
| 518 | |
| 519 | static struct fb_ops pxafb_ops = { |
| 520 | .owner = THIS_MODULE, |
| 521 | .fb_check_var = pxafb_check_var, |
| 522 | .fb_set_par = pxafb_set_par, |
| 523 | .fb_setcolreg = pxafb_setcolreg, |
| 524 | .fb_fillrect = cfb_fillrect, |
| 525 | .fb_copyarea = cfb_copyarea, |
| 526 | .fb_imageblit = cfb_imageblit, |
| 527 | .fb_blank = pxafb_blank, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | .fb_mmap = pxafb_mmap, |
| 529 | }; |
| 530 | |
| 531 | /* |
| 532 | * Calculate the PCD value from the clock rate (in picoseconds). |
| 533 | * We take account of the PPCR clock setting. |
| 534 | * From PXA Developer's Manual: |
| 535 | * |
| 536 | * PixelClock = LCLK |
| 537 | * ------------- |
| 538 | * 2 ( PCD + 1 ) |
| 539 | * |
| 540 | * PCD = LCLK |
| 541 | * ------------- - 1 |
| 542 | * 2(PixelClock) |
| 543 | * |
| 544 | * Where: |
| 545 | * LCLK = LCD/Memory Clock |
| 546 | * PCD = LCCR3[7:0] |
| 547 | * |
| 548 | * PixelClock here is in Hz while the pixclock argument given is the |
| 549 | * period in picoseconds. Hence PixelClock = 1 / ( pixclock * 10^-12 ) |
| 550 | * |
| 551 | * The function get_lclk_frequency_10khz returns LCLK in units of |
| 552 | * 10khz. Calling the result of this function lclk gives us the |
| 553 | * following |
| 554 | * |
| 555 | * PCD = (lclk * 10^4 ) * ( pixclock * 10^-12 ) |
| 556 | * -------------------------------------- - 1 |
| 557 | * 2 |
| 558 | * |
| 559 | * Factoring the 10^4 and 10^-12 out gives 10^-8 == 1 / 100000000 as used below. |
| 560 | */ |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 561 | static inline unsigned int get_pcd(struct pxafb_info *fbi, |
| 562 | unsigned int pixclock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | { |
| 564 | unsigned long long pcd; |
| 565 | |
| 566 | /* FIXME: Need to take into account Double Pixel Clock mode |
Russell King | 72e3524 | 2007-08-20 10:18:42 +0100 | [diff] [blame] | 567 | * (DPC) bit? or perhaps set it based on the various clock |
| 568 | * speeds */ |
| 569 | pcd = (unsigned long long)(clk_get_rate(fbi->clk) / 10000); |
| 570 | pcd *= pixclock; |
Nicolas Pitre | bf1b8ab | 2005-06-23 21:56:45 +0100 | [diff] [blame] | 571 | do_div(pcd, 100000000 * 2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | /* no need for this, since we should subtract 1 anyway. they cancel */ |
| 573 | /* pcd += 1; */ /* make up for integer math truncations */ |
| 574 | return (unsigned int)pcd; |
| 575 | } |
| 576 | |
| 577 | /* |
Richard Purdie | ba44cd2 | 2005-09-09 13:10:03 -0700 | [diff] [blame] | 578 | * Some touchscreens need hsync information from the video driver to |
Russell King | 72e3524 | 2007-08-20 10:18:42 +0100 | [diff] [blame] | 579 | * function correctly. We export it here. Note that 'hsync_time' and |
| 580 | * the value returned from pxafb_get_hsync_time() is the *reciprocal* |
| 581 | * of the hsync period in seconds. |
Richard Purdie | ba44cd2 | 2005-09-09 13:10:03 -0700 | [diff] [blame] | 582 | */ |
| 583 | static inline void set_hsync_time(struct pxafb_info *fbi, unsigned int pcd) |
| 584 | { |
Russell King | 72e3524 | 2007-08-20 10:18:42 +0100 | [diff] [blame] | 585 | unsigned long htime; |
Richard Purdie | ba44cd2 | 2005-09-09 13:10:03 -0700 | [diff] [blame] | 586 | |
| 587 | if ((pcd == 0) || (fbi->fb.var.hsync_len == 0)) { |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 588 | fbi->hsync_time = 0; |
Richard Purdie | ba44cd2 | 2005-09-09 13:10:03 -0700 | [diff] [blame] | 589 | return; |
| 590 | } |
| 591 | |
Russell King | 72e3524 | 2007-08-20 10:18:42 +0100 | [diff] [blame] | 592 | htime = clk_get_rate(fbi->clk) / (pcd * fbi->fb.var.hsync_len); |
| 593 | |
Richard Purdie | ba44cd2 | 2005-09-09 13:10:03 -0700 | [diff] [blame] | 594 | fbi->hsync_time = htime; |
| 595 | } |
| 596 | |
| 597 | unsigned long pxafb_get_hsync_time(struct device *dev) |
| 598 | { |
| 599 | struct pxafb_info *fbi = dev_get_drvdata(dev); |
| 600 | |
| 601 | /* If display is blanked/suspended, hsync isn't active */ |
| 602 | if (!fbi || (fbi->state != C_ENABLE)) |
| 603 | return 0; |
| 604 | |
| 605 | return fbi->hsync_time; |
| 606 | } |
| 607 | EXPORT_SYMBOL(pxafb_get_hsync_time); |
| 608 | |
eric miao | 2c42dd8 | 2008-04-30 00:52:21 -0700 | [diff] [blame] | 609 | static int setup_frame_dma(struct pxafb_info *fbi, int dma, int pal, |
| 610 | unsigned int offset, size_t size) |
| 611 | { |
| 612 | struct pxafb_dma_descriptor *dma_desc, *pal_desc; |
| 613 | unsigned int dma_desc_off, pal_desc_off; |
| 614 | |
| 615 | if (dma < 0 || dma >= DMA_MAX) |
| 616 | return -EINVAL; |
| 617 | |
| 618 | dma_desc = &fbi->dma_buff->dma_desc[dma]; |
| 619 | dma_desc_off = offsetof(struct pxafb_dma_buff, dma_desc[dma]); |
| 620 | |
| 621 | dma_desc->fsadr = fbi->screen_dma + offset; |
| 622 | dma_desc->fidr = 0; |
| 623 | dma_desc->ldcmd = size; |
| 624 | |
| 625 | if (pal < 0 || pal >= PAL_MAX) { |
| 626 | dma_desc->fdadr = fbi->dma_buff_phys + dma_desc_off; |
| 627 | fbi->fdadr[dma] = fbi->dma_buff_phys + dma_desc_off; |
| 628 | } else { |
Jürgen Schindele | 62cfcf4 | 2008-06-11 19:56:06 +0100 | [diff] [blame] | 629 | pal_desc = &fbi->dma_buff->pal_desc[pal]; |
| 630 | pal_desc_off = offsetof(struct pxafb_dma_buff, pal_desc[pal]); |
eric miao | 2c42dd8 | 2008-04-30 00:52:21 -0700 | [diff] [blame] | 631 | |
| 632 | pal_desc->fsadr = fbi->dma_buff_phys + pal * PALETTE_SIZE; |
| 633 | pal_desc->fidr = 0; |
| 634 | |
| 635 | if ((fbi->lccr4 & LCCR4_PAL_FOR_MASK) == LCCR4_PAL_FOR_0) |
| 636 | pal_desc->ldcmd = fbi->palette_size * sizeof(u16); |
| 637 | else |
| 638 | pal_desc->ldcmd = fbi->palette_size * sizeof(u32); |
| 639 | |
| 640 | pal_desc->ldcmd |= LDCMD_PAL; |
| 641 | |
| 642 | /* flip back and forth between palette and frame buffer */ |
| 643 | pal_desc->fdadr = fbi->dma_buff_phys + dma_desc_off; |
| 644 | dma_desc->fdadr = fbi->dma_buff_phys + pal_desc_off; |
| 645 | fbi->fdadr[dma] = fbi->dma_buff_phys + dma_desc_off; |
| 646 | } |
| 647 | |
| 648 | return 0; |
| 649 | } |
| 650 | |
Eric Miao | 3c42a44 | 2008-04-30 00:52:26 -0700 | [diff] [blame] | 651 | #ifdef CONFIG_FB_PXA_SMARTPANEL |
| 652 | static int setup_smart_dma(struct pxafb_info *fbi) |
| 653 | { |
| 654 | struct pxafb_dma_descriptor *dma_desc; |
| 655 | unsigned long dma_desc_off, cmd_buff_off; |
| 656 | |
| 657 | dma_desc = &fbi->dma_buff->dma_desc[DMA_CMD]; |
| 658 | dma_desc_off = offsetof(struct pxafb_dma_buff, dma_desc[DMA_CMD]); |
| 659 | cmd_buff_off = offsetof(struct pxafb_dma_buff, cmd_buff); |
| 660 | |
| 661 | dma_desc->fdadr = fbi->dma_buff_phys + dma_desc_off; |
| 662 | dma_desc->fsadr = fbi->dma_buff_phys + cmd_buff_off; |
| 663 | dma_desc->fidr = 0; |
| 664 | dma_desc->ldcmd = fbi->n_smart_cmds * sizeof(uint16_t); |
| 665 | |
| 666 | fbi->fdadr[DMA_CMD] = dma_desc->fdadr; |
| 667 | return 0; |
| 668 | } |
| 669 | |
| 670 | int pxafb_smart_flush(struct fb_info *info) |
| 671 | { |
| 672 | struct pxafb_info *fbi = container_of(info, struct pxafb_info, fb); |
| 673 | uint32_t prsr; |
| 674 | int ret = 0; |
| 675 | |
| 676 | /* disable controller until all registers are set up */ |
| 677 | lcd_writel(fbi, LCCR0, fbi->reg_lccr0 & ~LCCR0_ENB); |
| 678 | |
| 679 | /* 1. make it an even number of commands to align on 32-bit boundary |
| 680 | * 2. add the interrupt command to the end of the chain so we can |
| 681 | * keep track of the end of the transfer |
| 682 | */ |
| 683 | |
| 684 | while (fbi->n_smart_cmds & 1) |
| 685 | fbi->smart_cmds[fbi->n_smart_cmds++] = SMART_CMD_NOOP; |
| 686 | |
| 687 | fbi->smart_cmds[fbi->n_smart_cmds++] = SMART_CMD_INTERRUPT; |
| 688 | fbi->smart_cmds[fbi->n_smart_cmds++] = SMART_CMD_WAIT_FOR_VSYNC; |
| 689 | setup_smart_dma(fbi); |
| 690 | |
| 691 | /* continue to execute next command */ |
| 692 | prsr = lcd_readl(fbi, PRSR) | PRSR_ST_OK | PRSR_CON_NT; |
| 693 | lcd_writel(fbi, PRSR, prsr); |
| 694 | |
| 695 | /* stop the processor in case it executed "wait for sync" cmd */ |
| 696 | lcd_writel(fbi, CMDCR, 0x0001); |
| 697 | |
| 698 | /* don't send interrupts for fifo underruns on channel 6 */ |
| 699 | lcd_writel(fbi, LCCR5, LCCR5_IUM(6)); |
| 700 | |
| 701 | lcd_writel(fbi, LCCR1, fbi->reg_lccr1); |
| 702 | lcd_writel(fbi, LCCR2, fbi->reg_lccr2); |
| 703 | lcd_writel(fbi, LCCR3, fbi->reg_lccr3); |
| 704 | lcd_writel(fbi, FDADR0, fbi->fdadr[0]); |
| 705 | lcd_writel(fbi, FDADR6, fbi->fdadr[6]); |
| 706 | |
| 707 | /* begin sending */ |
| 708 | lcd_writel(fbi, LCCR0, fbi->reg_lccr0 | LCCR0_ENB); |
| 709 | |
| 710 | if (wait_for_completion_timeout(&fbi->command_done, HZ/2) == 0) { |
| 711 | pr_warning("%s: timeout waiting for command done\n", |
| 712 | __func__); |
| 713 | ret = -ETIMEDOUT; |
| 714 | } |
| 715 | |
| 716 | /* quick disable */ |
| 717 | prsr = lcd_readl(fbi, PRSR) & ~(PRSR_ST_OK | PRSR_CON_NT); |
| 718 | lcd_writel(fbi, PRSR, prsr); |
| 719 | lcd_writel(fbi, LCCR0, fbi->reg_lccr0 & ~LCCR0_ENB); |
| 720 | lcd_writel(fbi, FDADR6, 0); |
| 721 | fbi->n_smart_cmds = 0; |
| 722 | return ret; |
| 723 | } |
| 724 | |
| 725 | int pxafb_smart_queue(struct fb_info *info, uint16_t *cmds, int n_cmds) |
| 726 | { |
| 727 | int i; |
| 728 | struct pxafb_info *fbi = container_of(info, struct pxafb_info, fb); |
| 729 | |
| 730 | /* leave 2 commands for INTERRUPT and WAIT_FOR_SYNC */ |
| 731 | for (i = 0; i < n_cmds; i++) { |
| 732 | if (fbi->n_smart_cmds == CMD_BUFF_SIZE - 8) |
| 733 | pxafb_smart_flush(info); |
| 734 | |
| 735 | fbi->smart_cmds[fbi->n_smart_cmds++] = *cmds++; |
| 736 | } |
| 737 | |
| 738 | return 0; |
| 739 | } |
| 740 | |
| 741 | static unsigned int __smart_timing(unsigned time_ns, unsigned long lcd_clk) |
| 742 | { |
| 743 | unsigned int t = (time_ns * (lcd_clk / 1000000) / 1000); |
| 744 | return (t == 0) ? 1 : t; |
| 745 | } |
| 746 | |
| 747 | static void setup_smart_timing(struct pxafb_info *fbi, |
| 748 | struct fb_var_screeninfo *var) |
| 749 | { |
| 750 | struct pxafb_mach_info *inf = fbi->dev->platform_data; |
| 751 | struct pxafb_mode_info *mode = &inf->modes[0]; |
| 752 | unsigned long lclk = clk_get_rate(fbi->clk); |
| 753 | unsigned t1, t2, t3, t4; |
| 754 | |
| 755 | t1 = max(mode->a0csrd_set_hld, mode->a0cswr_set_hld); |
| 756 | t2 = max(mode->rd_pulse_width, mode->wr_pulse_width); |
| 757 | t3 = mode->op_hold_time; |
| 758 | t4 = mode->cmd_inh_time; |
| 759 | |
| 760 | fbi->reg_lccr1 = |
| 761 | LCCR1_DisWdth(var->xres) | |
| 762 | LCCR1_BegLnDel(__smart_timing(t1, lclk)) | |
| 763 | LCCR1_EndLnDel(__smart_timing(t2, lclk)) | |
| 764 | LCCR1_HorSnchWdth(__smart_timing(t3, lclk)); |
| 765 | |
| 766 | fbi->reg_lccr2 = LCCR2_DisHght(var->yres); |
| 767 | fbi->reg_lccr3 = LCCR3_PixClkDiv(__smart_timing(t4, lclk)); |
| 768 | |
| 769 | /* FIXME: make this configurable */ |
| 770 | fbi->reg_cmdcr = 1; |
| 771 | } |
| 772 | |
| 773 | static int pxafb_smart_thread(void *arg) |
| 774 | { |
Eric Miao | 7f1133c | 2008-04-30 00:52:27 -0700 | [diff] [blame] | 775 | struct pxafb_info *fbi = arg; |
Eric Miao | 3c42a44 | 2008-04-30 00:52:26 -0700 | [diff] [blame] | 776 | struct pxafb_mach_info *inf = fbi->dev->platform_data; |
| 777 | |
| 778 | if (!fbi || !inf->smart_update) { |
| 779 | pr_err("%s: not properly initialized, thread terminated\n", |
| 780 | __func__); |
| 781 | return -EINVAL; |
| 782 | } |
| 783 | |
| 784 | pr_debug("%s(): task starting\n", __func__); |
| 785 | |
| 786 | set_freezable(); |
| 787 | while (!kthread_should_stop()) { |
| 788 | |
| 789 | if (try_to_freeze()) |
| 790 | continue; |
| 791 | |
| 792 | if (fbi->state == C_ENABLE) { |
| 793 | inf->smart_update(&fbi->fb); |
| 794 | complete(&fbi->refresh_done); |
| 795 | } |
| 796 | |
| 797 | set_current_state(TASK_INTERRUPTIBLE); |
| 798 | schedule_timeout(30 * HZ / 1000); |
| 799 | } |
| 800 | |
| 801 | pr_debug("%s(): task ending\n", __func__); |
| 802 | return 0; |
| 803 | } |
| 804 | |
| 805 | static int pxafb_smart_init(struct pxafb_info *fbi) |
| 806 | { |
Eric Miao | 6cc4abe | 2008-11-11 21:47:07 +0800 | [diff] [blame] | 807 | if (!(fbi->lccr0 | LCCR0_LCDT)) |
| 808 | return 0; |
| 809 | |
Eric Miao | 3c42a44 | 2008-04-30 00:52:26 -0700 | [diff] [blame] | 810 | fbi->smart_thread = kthread_run(pxafb_smart_thread, fbi, |
| 811 | "lcd_refresh"); |
| 812 | if (IS_ERR(fbi->smart_thread)) { |
| 813 | printk(KERN_ERR "%s: unable to create kernel thread\n", |
| 814 | __func__); |
| 815 | return PTR_ERR(fbi->smart_thread); |
| 816 | } |
| 817 | return 0; |
| 818 | } |
| 819 | #else |
| 820 | int pxafb_smart_queue(struct fb_info *info, uint16_t *cmds, int n_cmds) |
| 821 | { |
| 822 | return 0; |
| 823 | } |
| 824 | |
| 825 | int pxafb_smart_flush(struct fb_info *info) |
| 826 | { |
| 827 | return 0; |
| 828 | } |
| 829 | #endif /* CONFIG_FB_SMART_PANEL */ |
| 830 | |
Eric Miao | 90eabbf | 2008-04-30 00:52:25 -0700 | [diff] [blame] | 831 | static void setup_parallel_timing(struct pxafb_info *fbi, |
| 832 | struct fb_var_screeninfo *var) |
| 833 | { |
| 834 | unsigned int lines_per_panel, pcd = get_pcd(fbi, var->pixclock); |
| 835 | |
| 836 | fbi->reg_lccr1 = |
| 837 | LCCR1_DisWdth(var->xres) + |
| 838 | LCCR1_HorSnchWdth(var->hsync_len) + |
| 839 | LCCR1_BegLnDel(var->left_margin) + |
| 840 | LCCR1_EndLnDel(var->right_margin); |
| 841 | |
| 842 | /* |
| 843 | * If we have a dual scan LCD, we need to halve |
| 844 | * the YRES parameter. |
| 845 | */ |
| 846 | lines_per_panel = var->yres; |
| 847 | if ((fbi->lccr0 & LCCR0_SDS) == LCCR0_Dual) |
| 848 | lines_per_panel /= 2; |
| 849 | |
| 850 | fbi->reg_lccr2 = |
| 851 | LCCR2_DisHght(lines_per_panel) + |
| 852 | LCCR2_VrtSnchWdth(var->vsync_len) + |
| 853 | LCCR2_BegFrmDel(var->upper_margin) + |
| 854 | LCCR2_EndFrmDel(var->lower_margin); |
| 855 | |
| 856 | fbi->reg_lccr3 = fbi->lccr3 | |
| 857 | (var->sync & FB_SYNC_HOR_HIGH_ACT ? |
| 858 | LCCR3_HorSnchH : LCCR3_HorSnchL) | |
| 859 | (var->sync & FB_SYNC_VERT_HIGH_ACT ? |
| 860 | LCCR3_VrtSnchH : LCCR3_VrtSnchL); |
| 861 | |
| 862 | if (pcd) { |
| 863 | fbi->reg_lccr3 |= LCCR3_PixClkDiv(pcd); |
| 864 | set_hsync_time(fbi, pcd); |
| 865 | } |
| 866 | } |
| 867 | |
Richard Purdie | ba44cd2 | 2005-09-09 13:10:03 -0700 | [diff] [blame] | 868 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 869 | * pxafb_activate_var(): |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 870 | * Configures LCD Controller based on entries in var parameter. |
| 871 | * Settings are only written to the controller if changes were made. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | */ |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 873 | static int pxafb_activate_var(struct fb_var_screeninfo *var, |
| 874 | struct pxafb_info *fbi) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | u_long flags; |
eric miao | 2c42dd8 | 2008-04-30 00:52:21 -0700 | [diff] [blame] | 877 | size_t nbytes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 878 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | #if DEBUG_VAR |
Eric Miao | 3c42a44 | 2008-04-30 00:52:26 -0700 | [diff] [blame] | 880 | if (!(fbi->lccr0 & LCCR0_LCDT)) { |
| 881 | if (var->xres < 16 || var->xres > 1024) |
| 882 | printk(KERN_ERR "%s: invalid xres %d\n", |
| 883 | fbi->fb.fix.id, var->xres); |
| 884 | switch (var->bits_per_pixel) { |
| 885 | case 1: |
| 886 | case 2: |
| 887 | case 4: |
| 888 | case 8: |
| 889 | case 16: |
Stefan Schmidt | c1450f1 | 2008-07-09 08:06:32 +0100 | [diff] [blame] | 890 | case 24: |
| 891 | case 32: |
Eric Miao | 3c42a44 | 2008-04-30 00:52:26 -0700 | [diff] [blame] | 892 | break; |
| 893 | default: |
| 894 | printk(KERN_ERR "%s: invalid bit depth %d\n", |
| 895 | fbi->fb.fix.id, var->bits_per_pixel); |
| 896 | break; |
| 897 | } |
| 898 | |
| 899 | if (var->hsync_len < 1 || var->hsync_len > 64) |
| 900 | printk(KERN_ERR "%s: invalid hsync_len %d\n", |
| 901 | fbi->fb.fix.id, var->hsync_len); |
| 902 | if (var->left_margin < 1 || var->left_margin > 255) |
| 903 | printk(KERN_ERR "%s: invalid left_margin %d\n", |
| 904 | fbi->fb.fix.id, var->left_margin); |
| 905 | if (var->right_margin < 1 || var->right_margin > 255) |
| 906 | printk(KERN_ERR "%s: invalid right_margin %d\n", |
| 907 | fbi->fb.fix.id, var->right_margin); |
| 908 | if (var->yres < 1 || var->yres > 1024) |
| 909 | printk(KERN_ERR "%s: invalid yres %d\n", |
| 910 | fbi->fb.fix.id, var->yres); |
| 911 | if (var->vsync_len < 1 || var->vsync_len > 64) |
| 912 | printk(KERN_ERR "%s: invalid vsync_len %d\n", |
| 913 | fbi->fb.fix.id, var->vsync_len); |
| 914 | if (var->upper_margin < 0 || var->upper_margin > 255) |
| 915 | printk(KERN_ERR "%s: invalid upper_margin %d\n", |
| 916 | fbi->fb.fix.id, var->upper_margin); |
| 917 | if (var->lower_margin < 0 || var->lower_margin > 255) |
| 918 | printk(KERN_ERR "%s: invalid lower_margin %d\n", |
| 919 | fbi->fb.fix.id, var->lower_margin); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 921 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 922 | /* Update shadow copy atomically */ |
| 923 | local_irq_save(flags); |
| 924 | |
Eric Miao | 3c42a44 | 2008-04-30 00:52:26 -0700 | [diff] [blame] | 925 | #ifdef CONFIG_FB_PXA_SMARTPANEL |
| 926 | if (fbi->lccr0 & LCCR0_LCDT) |
| 927 | setup_smart_timing(fbi, var); |
| 928 | else |
| 929 | #endif |
| 930 | setup_parallel_timing(fbi, var); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | |
Eric Miao | 90eabbf | 2008-04-30 00:52:25 -0700 | [diff] [blame] | 932 | fbi->reg_lccr0 = fbi->lccr0 | |
| 933 | (LCCR0_LDM | LCCR0_SFM | LCCR0_IUM | LCCR0_EFM | |
| 934 | LCCR0_QDM | LCCR0_BM | LCCR0_OUM); |
| 935 | |
| 936 | fbi->reg_lccr3 |= pxafb_bpp_to_lccr3(var); |
| 937 | |
| 938 | nbytes = var->yres * fbi->fb.fix.line_length; |
| 939 | |
| 940 | if ((fbi->lccr0 & LCCR0_SDS) == LCCR0_Dual) { |
| 941 | nbytes = nbytes / 2; |
eric miao | 2c42dd8 | 2008-04-30 00:52:21 -0700 | [diff] [blame] | 942 | setup_frame_dma(fbi, DMA_LOWER, PAL_NONE, nbytes, nbytes); |
Eric Miao | 90eabbf | 2008-04-30 00:52:25 -0700 | [diff] [blame] | 943 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 944 | |
Eric Miao | 3c42a44 | 2008-04-30 00:52:26 -0700 | [diff] [blame] | 945 | if ((var->bits_per_pixel >= 16) || (fbi->lccr0 & LCCR0_LCDT)) |
eric miao | 2c42dd8 | 2008-04-30 00:52:21 -0700 | [diff] [blame] | 946 | setup_frame_dma(fbi, DMA_BASE, PAL_NONE, 0, nbytes); |
Hans J. Koch | 9ffa739 | 2007-10-16 01:28:41 -0700 | [diff] [blame] | 947 | else |
eric miao | 2c42dd8 | 2008-04-30 00:52:21 -0700 | [diff] [blame] | 948 | setup_frame_dma(fbi, DMA_BASE, PAL_BASE, 0, nbytes); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 949 | |
Eric Miao | a7535ba | 2008-04-30 00:52:24 -0700 | [diff] [blame] | 950 | fbi->reg_lccr4 = lcd_readl(fbi, LCCR4) & ~LCCR4_PAL_FOR_MASK; |
Hans J. Koch | 9ffa739 | 2007-10-16 01:28:41 -0700 | [diff] [blame] | 951 | fbi->reg_lccr4 |= (fbi->lccr4 & LCCR4_PAL_FOR_MASK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 952 | local_irq_restore(flags); |
| 953 | |
| 954 | /* |
| 955 | * Only update the registers if the controller is enabled |
| 956 | * and something has changed. |
| 957 | */ |
Eric Miao | a7535ba | 2008-04-30 00:52:24 -0700 | [diff] [blame] | 958 | if ((lcd_readl(fbi, LCCR0) != fbi->reg_lccr0) || |
| 959 | (lcd_readl(fbi, LCCR1) != fbi->reg_lccr1) || |
| 960 | (lcd_readl(fbi, LCCR2) != fbi->reg_lccr2) || |
| 961 | (lcd_readl(fbi, LCCR3) != fbi->reg_lccr3) || |
| 962 | (lcd_readl(fbi, FDADR0) != fbi->fdadr[0]) || |
| 963 | (lcd_readl(fbi, FDADR1) != fbi->fdadr[1])) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | pxafb_schedule_work(fbi, C_REENABLE); |
| 965 | |
| 966 | return 0; |
| 967 | } |
| 968 | |
| 969 | /* |
| 970 | * NOTE! The following functions are purely helpers for set_ctrlr_state. |
| 971 | * Do not call them directly; set_ctrlr_state does the correct serialisation |
| 972 | * to ensure that things happen in the right way 100% of time time. |
| 973 | * -- rmk |
| 974 | */ |
| 975 | static inline void __pxafb_backlight_power(struct pxafb_info *fbi, int on) |
| 976 | { |
Russell King | ca5da71 | 2005-09-29 09:44:54 +0100 | [diff] [blame] | 977 | pr_debug("pxafb: backlight o%s\n", on ? "n" : "ff"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 979 | if (pxafb_backlight_power) |
| 980 | pxafb_backlight_power(on); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 981 | } |
| 982 | |
| 983 | static inline void __pxafb_lcd_power(struct pxafb_info *fbi, int on) |
| 984 | { |
Russell King | ca5da71 | 2005-09-29 09:44:54 +0100 | [diff] [blame] | 985 | pr_debug("pxafb: LCD power o%s\n", on ? "n" : "ff"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 986 | |
| 987 | if (pxafb_lcd_power) |
Richard Purdie | d14b272 | 2006-09-20 22:54:21 +0100 | [diff] [blame] | 988 | pxafb_lcd_power(on, &fbi->fb.var); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 989 | } |
| 990 | |
| 991 | static void pxafb_setup_gpio(struct pxafb_info *fbi) |
| 992 | { |
| 993 | int gpio, ldd_bits; |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 994 | unsigned int lccr0 = fbi->lccr0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 995 | |
| 996 | /* |
| 997 | * setup is based on type of panel supported |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 998 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 999 | |
| 1000 | /* 4 bit interface */ |
| 1001 | if ((lccr0 & LCCR0_CMS) == LCCR0_Mono && |
| 1002 | (lccr0 & LCCR0_SDS) == LCCR0_Sngl && |
| 1003 | (lccr0 & LCCR0_DPD) == LCCR0_4PixMono) |
| 1004 | ldd_bits = 4; |
| 1005 | |
| 1006 | /* 8 bit interface */ |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 1007 | else if (((lccr0 & LCCR0_CMS) == LCCR0_Mono && |
| 1008 | ((lccr0 & LCCR0_SDS) == LCCR0_Dual || |
| 1009 | (lccr0 & LCCR0_DPD) == LCCR0_8PixMono)) || |
| 1010 | ((lccr0 & LCCR0_CMS) == LCCR0_Color && |
| 1011 | (lccr0 & LCCR0_PAS) == LCCR0_Pas && |
| 1012 | (lccr0 & LCCR0_SDS) == LCCR0_Sngl)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1013 | ldd_bits = 8; |
| 1014 | |
| 1015 | /* 16 bit interface */ |
| 1016 | else if ((lccr0 & LCCR0_CMS) == LCCR0_Color && |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 1017 | ((lccr0 & LCCR0_SDS) == LCCR0_Dual || |
| 1018 | (lccr0 & LCCR0_PAS) == LCCR0_Act)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | ldd_bits = 16; |
| 1020 | |
| 1021 | else { |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 1022 | printk(KERN_ERR "pxafb_setup_gpio: unable to determine " |
| 1023 | "bits per pixel\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1024 | return; |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 1025 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1026 | |
| 1027 | for (gpio = 58; ldd_bits; gpio++, ldd_bits--) |
| 1028 | pxa_gpio_mode(gpio | GPIO_ALT_FN_2_OUT); |
Stefan Schmidt | c1450f1 | 2008-07-09 08:06:32 +0100 | [diff] [blame] | 1029 | /* 18 bit interface */ |
| 1030 | if (fbi->fb.var.bits_per_pixel > 16) { |
| 1031 | pxa_gpio_mode(86 | GPIO_ALT_FN_2_OUT); |
| 1032 | pxa_gpio_mode(87 | GPIO_ALT_FN_2_OUT); |
| 1033 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1034 | pxa_gpio_mode(GPIO74_LCD_FCLK_MD); |
| 1035 | pxa_gpio_mode(GPIO75_LCD_LCLK_MD); |
| 1036 | pxa_gpio_mode(GPIO76_LCD_PCLK_MD); |
Eric Miao | cb47729 | 2008-08-16 03:59:11 -0400 | [diff] [blame] | 1037 | |
| 1038 | if ((lccr0 & LCCR0_PAS) == 0) |
| 1039 | pxa_gpio_mode(GPIO77_LCD_ACBIAS_MD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1040 | } |
| 1041 | |
| 1042 | static void pxafb_enable_controller(struct pxafb_info *fbi) |
| 1043 | { |
Russell King | ca5da71 | 2005-09-29 09:44:54 +0100 | [diff] [blame] | 1044 | pr_debug("pxafb: Enabling LCD controller\n"); |
eric miao | 2c42dd8 | 2008-04-30 00:52:21 -0700 | [diff] [blame] | 1045 | pr_debug("fdadr0 0x%08x\n", (unsigned int) fbi->fdadr[0]); |
| 1046 | pr_debug("fdadr1 0x%08x\n", (unsigned int) fbi->fdadr[1]); |
Russell King | ca5da71 | 2005-09-29 09:44:54 +0100 | [diff] [blame] | 1047 | pr_debug("reg_lccr0 0x%08x\n", (unsigned int) fbi->reg_lccr0); |
| 1048 | pr_debug("reg_lccr1 0x%08x\n", (unsigned int) fbi->reg_lccr1); |
| 1049 | pr_debug("reg_lccr2 0x%08x\n", (unsigned int) fbi->reg_lccr2); |
| 1050 | pr_debug("reg_lccr3 0x%08x\n", (unsigned int) fbi->reg_lccr3); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1051 | |
Nicolas Pitre | 8d37226 | 2005-08-10 16:45:13 +0100 | [diff] [blame] | 1052 | /* enable LCD controller clock */ |
Russell King | 72e3524 | 2007-08-20 10:18:42 +0100 | [diff] [blame] | 1053 | clk_enable(fbi->clk); |
Nicolas Pitre | 8d37226 | 2005-08-10 16:45:13 +0100 | [diff] [blame] | 1054 | |
Eric Miao | 3c42a44 | 2008-04-30 00:52:26 -0700 | [diff] [blame] | 1055 | if (fbi->lccr0 & LCCR0_LCDT) |
| 1056 | return; |
| 1057 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1058 | /* Sequence from 11.7.10 */ |
Eric Miao | a7535ba | 2008-04-30 00:52:24 -0700 | [diff] [blame] | 1059 | lcd_writel(fbi, LCCR3, fbi->reg_lccr3); |
| 1060 | lcd_writel(fbi, LCCR2, fbi->reg_lccr2); |
| 1061 | lcd_writel(fbi, LCCR1, fbi->reg_lccr1); |
| 1062 | lcd_writel(fbi, LCCR0, fbi->reg_lccr0 & ~LCCR0_ENB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1063 | |
Eric Miao | a7535ba | 2008-04-30 00:52:24 -0700 | [diff] [blame] | 1064 | lcd_writel(fbi, FDADR0, fbi->fdadr[0]); |
| 1065 | lcd_writel(fbi, FDADR1, fbi->fdadr[1]); |
| 1066 | lcd_writel(fbi, LCCR0, fbi->reg_lccr0 | LCCR0_ENB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1067 | } |
| 1068 | |
| 1069 | static void pxafb_disable_controller(struct pxafb_info *fbi) |
| 1070 | { |
eric miao | ce4fb7b | 2008-04-30 00:52:21 -0700 | [diff] [blame] | 1071 | uint32_t lccr0; |
| 1072 | |
Eric Miao | 3c42a44 | 2008-04-30 00:52:26 -0700 | [diff] [blame] | 1073 | #ifdef CONFIG_FB_PXA_SMARTPANEL |
| 1074 | if (fbi->lccr0 & LCCR0_LCDT) { |
| 1075 | wait_for_completion_timeout(&fbi->refresh_done, |
| 1076 | 200 * HZ / 1000); |
| 1077 | return; |
| 1078 | } |
| 1079 | #endif |
| 1080 | |
eric miao | ce4fb7b | 2008-04-30 00:52:21 -0700 | [diff] [blame] | 1081 | /* Clear LCD Status Register */ |
Eric Miao | a7535ba | 2008-04-30 00:52:24 -0700 | [diff] [blame] | 1082 | lcd_writel(fbi, LCSR, 0xffffffff); |
eric miao | ce4fb7b | 2008-04-30 00:52:21 -0700 | [diff] [blame] | 1083 | |
Eric Miao | a7535ba | 2008-04-30 00:52:24 -0700 | [diff] [blame] | 1084 | lccr0 = lcd_readl(fbi, LCCR0) & ~LCCR0_LDM; |
| 1085 | lcd_writel(fbi, LCCR0, lccr0); |
| 1086 | lcd_writel(fbi, LCCR0, lccr0 | LCCR0_DIS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1087 | |
Eric Miao | 2ba162b | 2008-04-30 00:52:24 -0700 | [diff] [blame] | 1088 | wait_for_completion_timeout(&fbi->disable_done, 200 * HZ / 1000); |
Nicolas Pitre | 8d37226 | 2005-08-10 16:45:13 +0100 | [diff] [blame] | 1089 | |
| 1090 | /* disable LCD controller clock */ |
Russell King | 72e3524 | 2007-08-20 10:18:42 +0100 | [diff] [blame] | 1091 | clk_disable(fbi->clk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1092 | } |
| 1093 | |
| 1094 | /* |
| 1095 | * pxafb_handle_irq: Handle 'LCD DONE' interrupts. |
| 1096 | */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1097 | static irqreturn_t pxafb_handle_irq(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1098 | { |
| 1099 | struct pxafb_info *fbi = dev_id; |
Eric Miao | a7535ba | 2008-04-30 00:52:24 -0700 | [diff] [blame] | 1100 | unsigned int lccr0, lcsr = lcd_readl(fbi, LCSR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1101 | |
| 1102 | if (lcsr & LCSR_LDD) { |
Eric Miao | a7535ba | 2008-04-30 00:52:24 -0700 | [diff] [blame] | 1103 | lccr0 = lcd_readl(fbi, LCCR0); |
| 1104 | lcd_writel(fbi, LCCR0, lccr0 | LCCR0_LDM); |
Eric Miao | 2ba162b | 2008-04-30 00:52:24 -0700 | [diff] [blame] | 1105 | complete(&fbi->disable_done); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1106 | } |
| 1107 | |
Eric Miao | 3c42a44 | 2008-04-30 00:52:26 -0700 | [diff] [blame] | 1108 | #ifdef CONFIG_FB_PXA_SMARTPANEL |
| 1109 | if (lcsr & LCSR_CMD_INT) |
| 1110 | complete(&fbi->command_done); |
| 1111 | #endif |
| 1112 | |
Eric Miao | a7535ba | 2008-04-30 00:52:24 -0700 | [diff] [blame] | 1113 | lcd_writel(fbi, LCSR, lcsr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1114 | return IRQ_HANDLED; |
| 1115 | } |
| 1116 | |
| 1117 | /* |
| 1118 | * This function must be called from task context only, since it will |
| 1119 | * sleep when disabling the LCD controller, or if we get two contending |
| 1120 | * processes trying to alter state. |
| 1121 | */ |
| 1122 | static void set_ctrlr_state(struct pxafb_info *fbi, u_int state) |
| 1123 | { |
| 1124 | u_int old_state; |
| 1125 | |
Matthias Kaehlcke | b91dbce | 2008-07-23 21:31:14 -0700 | [diff] [blame] | 1126 | mutex_lock(&fbi->ctrlr_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1127 | |
| 1128 | old_state = fbi->state; |
| 1129 | |
| 1130 | /* |
| 1131 | * Hack around fbcon initialisation. |
| 1132 | */ |
| 1133 | if (old_state == C_STARTUP && state == C_REENABLE) |
| 1134 | state = C_ENABLE; |
| 1135 | |
| 1136 | switch (state) { |
| 1137 | case C_DISABLE_CLKCHANGE: |
| 1138 | /* |
| 1139 | * Disable controller for clock change. If the |
| 1140 | * controller is already disabled, then do nothing. |
| 1141 | */ |
| 1142 | if (old_state != C_DISABLE && old_state != C_DISABLE_PM) { |
| 1143 | fbi->state = state; |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 1144 | /* TODO __pxafb_lcd_power(fbi, 0); */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1145 | pxafb_disable_controller(fbi); |
| 1146 | } |
| 1147 | break; |
| 1148 | |
| 1149 | case C_DISABLE_PM: |
| 1150 | case C_DISABLE: |
| 1151 | /* |
| 1152 | * Disable controller |
| 1153 | */ |
| 1154 | if (old_state != C_DISABLE) { |
| 1155 | fbi->state = state; |
| 1156 | __pxafb_backlight_power(fbi, 0); |
| 1157 | __pxafb_lcd_power(fbi, 0); |
| 1158 | if (old_state != C_DISABLE_CLKCHANGE) |
| 1159 | pxafb_disable_controller(fbi); |
| 1160 | } |
| 1161 | break; |
| 1162 | |
| 1163 | case C_ENABLE_CLKCHANGE: |
| 1164 | /* |
| 1165 | * Enable the controller after clock change. Only |
| 1166 | * do this if we were disabled for the clock change. |
| 1167 | */ |
| 1168 | if (old_state == C_DISABLE_CLKCHANGE) { |
| 1169 | fbi->state = C_ENABLE; |
| 1170 | pxafb_enable_controller(fbi); |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 1171 | /* TODO __pxafb_lcd_power(fbi, 1); */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1172 | } |
| 1173 | break; |
| 1174 | |
| 1175 | case C_REENABLE: |
| 1176 | /* |
| 1177 | * Re-enable the controller only if it was already |
| 1178 | * enabled. This is so we reprogram the control |
| 1179 | * registers. |
| 1180 | */ |
| 1181 | if (old_state == C_ENABLE) { |
Richard Purdie | d14b272 | 2006-09-20 22:54:21 +0100 | [diff] [blame] | 1182 | __pxafb_lcd_power(fbi, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1183 | pxafb_disable_controller(fbi); |
| 1184 | pxafb_setup_gpio(fbi); |
| 1185 | pxafb_enable_controller(fbi); |
Richard Purdie | d14b272 | 2006-09-20 22:54:21 +0100 | [diff] [blame] | 1186 | __pxafb_lcd_power(fbi, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1187 | } |
| 1188 | break; |
| 1189 | |
| 1190 | case C_ENABLE_PM: |
| 1191 | /* |
| 1192 | * Re-enable the controller after PM. This is not |
| 1193 | * perfect - think about the case where we were doing |
| 1194 | * a clock change, and we suspended half-way through. |
| 1195 | */ |
| 1196 | if (old_state != C_DISABLE_PM) |
| 1197 | break; |
| 1198 | /* fall through */ |
| 1199 | |
| 1200 | case C_ENABLE: |
| 1201 | /* |
| 1202 | * Power up the LCD screen, enable controller, and |
| 1203 | * turn on the backlight. |
| 1204 | */ |
| 1205 | if (old_state != C_ENABLE) { |
| 1206 | fbi->state = C_ENABLE; |
| 1207 | pxafb_setup_gpio(fbi); |
| 1208 | pxafb_enable_controller(fbi); |
| 1209 | __pxafb_lcd_power(fbi, 1); |
| 1210 | __pxafb_backlight_power(fbi, 1); |
| 1211 | } |
| 1212 | break; |
| 1213 | } |
Matthias Kaehlcke | b91dbce | 2008-07-23 21:31:14 -0700 | [diff] [blame] | 1214 | mutex_unlock(&fbi->ctrlr_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1215 | } |
| 1216 | |
| 1217 | /* |
| 1218 | * Our LCD controller task (which is called when we blank or unblank) |
| 1219 | * via keventd. |
| 1220 | */ |
David Howells | 6d5aefb | 2006-12-05 19:36:26 +0000 | [diff] [blame] | 1221 | static void pxafb_task(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1222 | { |
David Howells | 6d5aefb | 2006-12-05 19:36:26 +0000 | [diff] [blame] | 1223 | struct pxafb_info *fbi = |
| 1224 | container_of(work, struct pxafb_info, task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1225 | u_int state = xchg(&fbi->task_state, -1); |
| 1226 | |
| 1227 | set_ctrlr_state(fbi, state); |
| 1228 | } |
| 1229 | |
| 1230 | #ifdef CONFIG_CPU_FREQ |
| 1231 | /* |
| 1232 | * CPU clock speed change handler. We need to adjust the LCD timing |
| 1233 | * parameters when the CPU clock is adjusted by the power management |
| 1234 | * subsystem. |
| 1235 | * |
| 1236 | * TODO: Determine why f->new != 10*get_lclk_frequency_10khz() |
| 1237 | */ |
| 1238 | static int |
| 1239 | pxafb_freq_transition(struct notifier_block *nb, unsigned long val, void *data) |
| 1240 | { |
| 1241 | struct pxafb_info *fbi = TO_INF(nb, freq_transition); |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 1242 | /* TODO struct cpufreq_freqs *f = data; */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1243 | u_int pcd; |
| 1244 | |
| 1245 | switch (val) { |
| 1246 | case CPUFREQ_PRECHANGE: |
| 1247 | set_ctrlr_state(fbi, C_DISABLE_CLKCHANGE); |
| 1248 | break; |
| 1249 | |
| 1250 | case CPUFREQ_POSTCHANGE: |
Russell King | 72e3524 | 2007-08-20 10:18:42 +0100 | [diff] [blame] | 1251 | pcd = get_pcd(fbi, fbi->fb.var.pixclock); |
Richard Purdie | ba44cd2 | 2005-09-09 13:10:03 -0700 | [diff] [blame] | 1252 | set_hsync_time(fbi, pcd); |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 1253 | fbi->reg_lccr3 = (fbi->reg_lccr3 & ~0xff) | |
| 1254 | LCCR3_PixClkDiv(pcd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1255 | set_ctrlr_state(fbi, C_ENABLE_CLKCHANGE); |
| 1256 | break; |
| 1257 | } |
| 1258 | return 0; |
| 1259 | } |
| 1260 | |
| 1261 | static int |
| 1262 | pxafb_freq_policy(struct notifier_block *nb, unsigned long val, void *data) |
| 1263 | { |
| 1264 | struct pxafb_info *fbi = TO_INF(nb, freq_policy); |
| 1265 | struct fb_var_screeninfo *var = &fbi->fb.var; |
| 1266 | struct cpufreq_policy *policy = data; |
| 1267 | |
| 1268 | switch (val) { |
| 1269 | case CPUFREQ_ADJUST: |
| 1270 | case CPUFREQ_INCOMPATIBLE: |
Holger Schurig | ac2bf5b | 2008-02-11 16:52:30 +0100 | [diff] [blame] | 1271 | pr_debug("min dma period: %d ps, " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1272 | "new clock %d kHz\n", pxafb_display_dma_period(var), |
| 1273 | policy->max); |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 1274 | /* TODO: fill in min/max values */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1275 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1276 | } |
| 1277 | return 0; |
| 1278 | } |
| 1279 | #endif |
| 1280 | |
| 1281 | #ifdef CONFIG_PM |
| 1282 | /* |
| 1283 | * Power management hooks. Note that we won't be called from IRQ context, |
| 1284 | * unlike the blank functions above, so we may sleep. |
| 1285 | */ |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1286 | static int pxafb_suspend(struct platform_device *dev, pm_message_t state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1287 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1288 | struct pxafb_info *fbi = platform_get_drvdata(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1289 | |
Russell King | 9480e30 | 2005-10-28 09:52:56 -0700 | [diff] [blame] | 1290 | set_ctrlr_state(fbi, C_DISABLE_PM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1291 | return 0; |
| 1292 | } |
| 1293 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1294 | static int pxafb_resume(struct platform_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1295 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1296 | struct pxafb_info *fbi = platform_get_drvdata(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1297 | |
Russell King | 9480e30 | 2005-10-28 09:52:56 -0700 | [diff] [blame] | 1298 | set_ctrlr_state(fbi, C_ENABLE_PM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1299 | return 0; |
| 1300 | } |
| 1301 | #else |
| 1302 | #define pxafb_suspend NULL |
| 1303 | #define pxafb_resume NULL |
| 1304 | #endif |
| 1305 | |
| 1306 | /* |
| 1307 | * pxafb_map_video_memory(): |
| 1308 | * Allocates the DRAM memory for the frame buffer. This buffer is |
| 1309 | * remapped into a non-cached, non-buffered, memory region to |
| 1310 | * allow palette and pixel writes to occur without flushing the |
| 1311 | * cache. Once this area is remapped, all virtual memory |
| 1312 | * access to the video memory should occur at the new region. |
| 1313 | */ |
Jaya Kumar | 9e6c297 | 2008-06-22 04:27:27 +0100 | [diff] [blame] | 1314 | static int __devinit pxafb_map_video_memory(struct pxafb_info *fbi) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1315 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1316 | /* |
| 1317 | * We reserve one page for the palette, plus the size |
| 1318 | * of the framebuffer. |
| 1319 | */ |
Eric Miao | 3c42a44 | 2008-04-30 00:52:26 -0700 | [diff] [blame] | 1320 | fbi->video_offset = PAGE_ALIGN(sizeof(struct pxafb_dma_buff)); |
| 1321 | fbi->map_size = PAGE_ALIGN(fbi->fb.fix.smem_len + fbi->video_offset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1322 | fbi->map_cpu = dma_alloc_writecombine(fbi->dev, fbi->map_size, |
| 1323 | &fbi->map_dma, GFP_KERNEL); |
| 1324 | |
| 1325 | if (fbi->map_cpu) { |
| 1326 | /* prevent initial garbage on screen */ |
| 1327 | memset(fbi->map_cpu, 0, fbi->map_size); |
Eric Miao | 3c42a44 | 2008-04-30 00:52:26 -0700 | [diff] [blame] | 1328 | fbi->fb.screen_base = fbi->map_cpu + fbi->video_offset; |
| 1329 | fbi->screen_dma = fbi->map_dma + fbi->video_offset; |
| 1330 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1331 | /* |
| 1332 | * FIXME: this is actually the wrong thing to place in |
| 1333 | * smem_start. But fbdev suffers from the problem that |
| 1334 | * it needs an API which doesn't exist (in this case, |
| 1335 | * dma_writecombine_mmap) |
| 1336 | */ |
| 1337 | fbi->fb.fix.smem_start = fbi->screen_dma; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1338 | fbi->palette_size = fbi->fb.var.bits_per_pixel == 8 ? 256 : 16; |
| 1339 | |
Eric Miao | 3c42a44 | 2008-04-30 00:52:26 -0700 | [diff] [blame] | 1340 | fbi->dma_buff = (void *) fbi->map_cpu; |
eric miao | 2c42dd8 | 2008-04-30 00:52:21 -0700 | [diff] [blame] | 1341 | fbi->dma_buff_phys = fbi->map_dma; |
Eric Miao | 3c42a44 | 2008-04-30 00:52:26 -0700 | [diff] [blame] | 1342 | fbi->palette_cpu = (u16 *) fbi->dma_buff->palette; |
| 1343 | |
Ian Molton | e84e954 | 2008-07-21 11:02:40 +0100 | [diff] [blame] | 1344 | pr_debug("pxafb: palette_mem_size = 0x%08x\n", fbi->palette_size*sizeof(u16)); |
Jürgen Schindele | 62cfcf4 | 2008-06-11 19:56:06 +0100 | [diff] [blame] | 1345 | |
Eric Miao | 3c42a44 | 2008-04-30 00:52:26 -0700 | [diff] [blame] | 1346 | #ifdef CONFIG_FB_PXA_SMARTPANEL |
| 1347 | fbi->smart_cmds = (uint16_t *) fbi->dma_buff->cmd_buff; |
| 1348 | fbi->n_smart_cmds = 0; |
| 1349 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1350 | } |
| 1351 | |
| 1352 | return fbi->map_cpu ? 0 : -ENOMEM; |
| 1353 | } |
| 1354 | |
eric miao | 84f43c3 | 2008-04-30 00:52:22 -0700 | [diff] [blame] | 1355 | static void pxafb_decode_mode_info(struct pxafb_info *fbi, |
| 1356 | struct pxafb_mode_info *modes, |
| 1357 | unsigned int num_modes) |
| 1358 | { |
| 1359 | unsigned int i, smemlen; |
| 1360 | |
| 1361 | pxafb_setmode(&fbi->fb.var, &modes[0]); |
| 1362 | |
| 1363 | for (i = 0; i < num_modes; i++) { |
| 1364 | smemlen = modes[i].xres * modes[i].yres * modes[i].bpp / 8; |
| 1365 | if (smemlen > fbi->fb.fix.smem_len) |
| 1366 | fbi->fb.fix.smem_len = smemlen; |
| 1367 | } |
| 1368 | } |
| 1369 | |
Guennadi Liakhovetski | ebdf982 | 2008-05-05 15:31:44 +0100 | [diff] [blame] | 1370 | static void pxafb_decode_mach_info(struct pxafb_info *fbi, |
| 1371 | struct pxafb_mach_info *inf) |
eric miao | 84f43c3 | 2008-04-30 00:52:22 -0700 | [diff] [blame] | 1372 | { |
| 1373 | unsigned int lcd_conn = inf->lcd_conn; |
| 1374 | |
| 1375 | fbi->cmap_inverse = inf->cmap_inverse; |
| 1376 | fbi->cmap_static = inf->cmap_static; |
| 1377 | |
Eric Miao | 1ec26db | 2008-11-11 21:45:57 +0800 | [diff] [blame] | 1378 | switch (lcd_conn & LCD_TYPE_MASK) { |
eric miao | 84f43c3 | 2008-04-30 00:52:22 -0700 | [diff] [blame] | 1379 | case LCD_TYPE_MONO_STN: |
| 1380 | fbi->lccr0 = LCCR0_CMS; |
| 1381 | break; |
| 1382 | case LCD_TYPE_MONO_DSTN: |
| 1383 | fbi->lccr0 = LCCR0_CMS | LCCR0_SDS; |
| 1384 | break; |
| 1385 | case LCD_TYPE_COLOR_STN: |
| 1386 | fbi->lccr0 = 0; |
| 1387 | break; |
| 1388 | case LCD_TYPE_COLOR_DSTN: |
| 1389 | fbi->lccr0 = LCCR0_SDS; |
| 1390 | break; |
| 1391 | case LCD_TYPE_COLOR_TFT: |
| 1392 | fbi->lccr0 = LCCR0_PAS; |
| 1393 | break; |
| 1394 | case LCD_TYPE_SMART_PANEL: |
| 1395 | fbi->lccr0 = LCCR0_LCDT | LCCR0_PAS; |
| 1396 | break; |
| 1397 | default: |
| 1398 | /* fall back to backward compatibility way */ |
| 1399 | fbi->lccr0 = inf->lccr0; |
| 1400 | fbi->lccr3 = inf->lccr3; |
| 1401 | fbi->lccr4 = inf->lccr4; |
Guennadi Liakhovetski | ebdf982 | 2008-05-05 15:31:44 +0100 | [diff] [blame] | 1402 | goto decode_mode; |
eric miao | 84f43c3 | 2008-04-30 00:52:22 -0700 | [diff] [blame] | 1403 | } |
| 1404 | |
| 1405 | if (lcd_conn == LCD_MONO_STN_8BPP) |
| 1406 | fbi->lccr0 |= LCCR0_DPD; |
| 1407 | |
Eric Miao | 9a1ac7e | 2008-08-15 02:50:44 -0400 | [diff] [blame] | 1408 | fbi->lccr0 |= (lcd_conn & LCD_ALTERNATE_MAPPING) ? LCCR0_LDDALT : 0; |
| 1409 | |
eric miao | 84f43c3 | 2008-04-30 00:52:22 -0700 | [diff] [blame] | 1410 | fbi->lccr3 = LCCR3_Acb((inf->lcd_conn >> 10) & 0xff); |
| 1411 | fbi->lccr3 |= (lcd_conn & LCD_BIAS_ACTIVE_LOW) ? LCCR3_OEP : 0; |
| 1412 | fbi->lccr3 |= (lcd_conn & LCD_PCLK_EDGE_FALL) ? LCCR3_PCP : 0; |
| 1413 | |
Guennadi Liakhovetski | ebdf982 | 2008-05-05 15:31:44 +0100 | [diff] [blame] | 1414 | decode_mode: |
eric miao | 84f43c3 | 2008-04-30 00:52:22 -0700 | [diff] [blame] | 1415 | pxafb_decode_mode_info(fbi, inf->modes, inf->num_modes); |
eric miao | 84f43c3 | 2008-04-30 00:52:22 -0700 | [diff] [blame] | 1416 | } |
| 1417 | |
Jaya Kumar | 9e6c297 | 2008-06-22 04:27:27 +0100 | [diff] [blame] | 1418 | static struct pxafb_info * __devinit pxafb_init_fbinfo(struct device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1419 | { |
| 1420 | struct pxafb_info *fbi; |
| 1421 | void *addr; |
| 1422 | struct pxafb_mach_info *inf = dev->platform_data; |
| 1423 | |
| 1424 | /* Alloc the pxafb_info and pseudo_palette in one step */ |
| 1425 | fbi = kmalloc(sizeof(struct pxafb_info) + sizeof(u32) * 16, GFP_KERNEL); |
| 1426 | if (!fbi) |
| 1427 | return NULL; |
| 1428 | |
| 1429 | memset(fbi, 0, sizeof(struct pxafb_info)); |
| 1430 | fbi->dev = dev; |
| 1431 | |
Russell King | 72e3524 | 2007-08-20 10:18:42 +0100 | [diff] [blame] | 1432 | fbi->clk = clk_get(dev, "LCDCLK"); |
| 1433 | if (IS_ERR(fbi->clk)) { |
| 1434 | kfree(fbi); |
| 1435 | return NULL; |
| 1436 | } |
| 1437 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1438 | strcpy(fbi->fb.fix.id, PXA_NAME); |
| 1439 | |
| 1440 | fbi->fb.fix.type = FB_TYPE_PACKED_PIXELS; |
| 1441 | fbi->fb.fix.type_aux = 0; |
| 1442 | fbi->fb.fix.xpanstep = 0; |
| 1443 | fbi->fb.fix.ypanstep = 0; |
| 1444 | fbi->fb.fix.ywrapstep = 0; |
| 1445 | fbi->fb.fix.accel = FB_ACCEL_NONE; |
| 1446 | |
| 1447 | fbi->fb.var.nonstd = 0; |
| 1448 | fbi->fb.var.activate = FB_ACTIVATE_NOW; |
| 1449 | fbi->fb.var.height = -1; |
| 1450 | fbi->fb.var.width = -1; |
| 1451 | fbi->fb.var.accel_flags = 0; |
| 1452 | fbi->fb.var.vmode = FB_VMODE_NONINTERLACED; |
| 1453 | |
| 1454 | fbi->fb.fbops = &pxafb_ops; |
| 1455 | fbi->fb.flags = FBINFO_DEFAULT; |
| 1456 | fbi->fb.node = -1; |
| 1457 | |
| 1458 | addr = fbi; |
| 1459 | addr = addr + sizeof(struct pxafb_info); |
| 1460 | fbi->fb.pseudo_palette = addr; |
| 1461 | |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 1462 | fbi->state = C_STARTUP; |
| 1463 | fbi->task_state = (u_char)-1; |
Richard Purdie | d14b272 | 2006-09-20 22:54:21 +0100 | [diff] [blame] | 1464 | |
eric miao | 84f43c3 | 2008-04-30 00:52:22 -0700 | [diff] [blame] | 1465 | pxafb_decode_mach_info(fbi, inf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1466 | |
| 1467 | init_waitqueue_head(&fbi->ctrlr_wait); |
David Howells | 6d5aefb | 2006-12-05 19:36:26 +0000 | [diff] [blame] | 1468 | INIT_WORK(&fbi->task, pxafb_task); |
Matthias Kaehlcke | b91dbce | 2008-07-23 21:31:14 -0700 | [diff] [blame] | 1469 | mutex_init(&fbi->ctrlr_lock); |
Eric Miao | 2ba162b | 2008-04-30 00:52:24 -0700 | [diff] [blame] | 1470 | init_completion(&fbi->disable_done); |
Eric Miao | 3c42a44 | 2008-04-30 00:52:26 -0700 | [diff] [blame] | 1471 | #ifdef CONFIG_FB_PXA_SMARTPANEL |
| 1472 | init_completion(&fbi->command_done); |
| 1473 | init_completion(&fbi->refresh_done); |
| 1474 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1475 | |
| 1476 | return fbi; |
| 1477 | } |
| 1478 | |
| 1479 | #ifdef CONFIG_FB_PXA_PARAMETERS |
Jaya Kumar | 9e6c297 | 2008-06-22 04:27:27 +0100 | [diff] [blame] | 1480 | static int __devinit parse_opt_mode(struct device *dev, const char *this_opt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1481 | { |
| 1482 | struct pxafb_mach_info *inf = dev->platform_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1483 | |
eric miao | 817daf1 | 2008-04-30 00:52:18 -0700 | [diff] [blame] | 1484 | const char *name = this_opt+5; |
| 1485 | unsigned int namelen = strlen(name); |
| 1486 | int res_specified = 0, bpp_specified = 0; |
| 1487 | unsigned int xres = 0, yres = 0, bpp = 0; |
| 1488 | int yres_specified = 0; |
| 1489 | int i; |
| 1490 | for (i = namelen-1; i >= 0; i--) { |
| 1491 | switch (name[i]) { |
| 1492 | case '-': |
| 1493 | namelen = i; |
| 1494 | if (!bpp_specified && !yres_specified) { |
| 1495 | bpp = simple_strtoul(&name[i+1], NULL, 0); |
| 1496 | bpp_specified = 1; |
| 1497 | } else |
| 1498 | goto done; |
| 1499 | break; |
| 1500 | case 'x': |
| 1501 | if (!yres_specified) { |
| 1502 | yres = simple_strtoul(&name[i+1], NULL, 0); |
| 1503 | yres_specified = 1; |
| 1504 | } else |
| 1505 | goto done; |
| 1506 | break; |
| 1507 | case '0' ... '9': |
| 1508 | break; |
| 1509 | default: |
| 1510 | goto done; |
| 1511 | } |
| 1512 | } |
| 1513 | if (i < 0 && yres_specified) { |
| 1514 | xres = simple_strtoul(name, NULL, 0); |
| 1515 | res_specified = 1; |
| 1516 | } |
| 1517 | done: |
| 1518 | if (res_specified) { |
| 1519 | dev_info(dev, "overriding resolution: %dx%d\n", xres, yres); |
| 1520 | inf->modes[0].xres = xres; inf->modes[0].yres = yres; |
| 1521 | } |
| 1522 | if (bpp_specified) |
| 1523 | switch (bpp) { |
| 1524 | case 1: |
| 1525 | case 2: |
| 1526 | case 4: |
| 1527 | case 8: |
| 1528 | case 16: |
| 1529 | inf->modes[0].bpp = bpp; |
| 1530 | dev_info(dev, "overriding bit depth: %d\n", bpp); |
| 1531 | break; |
| 1532 | default: |
| 1533 | dev_err(dev, "Depth %d is not valid\n", bpp); |
| 1534 | return -EINVAL; |
| 1535 | } |
| 1536 | return 0; |
| 1537 | } |
| 1538 | |
Jaya Kumar | 9e6c297 | 2008-06-22 04:27:27 +0100 | [diff] [blame] | 1539 | static int __devinit parse_opt(struct device *dev, char *this_opt) |
eric miao | 817daf1 | 2008-04-30 00:52:18 -0700 | [diff] [blame] | 1540 | { |
| 1541 | struct pxafb_mach_info *inf = dev->platform_data; |
| 1542 | struct pxafb_mode_info *mode = &inf->modes[0]; |
| 1543 | char s[64]; |
| 1544 | |
| 1545 | s[0] = '\0'; |
| 1546 | |
| 1547 | if (!strncmp(this_opt, "mode:", 5)) { |
| 1548 | return parse_opt_mode(dev, this_opt); |
| 1549 | } else if (!strncmp(this_opt, "pixclock:", 9)) { |
| 1550 | mode->pixclock = simple_strtoul(this_opt+9, NULL, 0); |
| 1551 | sprintf(s, "pixclock: %ld\n", mode->pixclock); |
| 1552 | } else if (!strncmp(this_opt, "left:", 5)) { |
| 1553 | mode->left_margin = simple_strtoul(this_opt+5, NULL, 0); |
| 1554 | sprintf(s, "left: %u\n", mode->left_margin); |
| 1555 | } else if (!strncmp(this_opt, "right:", 6)) { |
| 1556 | mode->right_margin = simple_strtoul(this_opt+6, NULL, 0); |
| 1557 | sprintf(s, "right: %u\n", mode->right_margin); |
| 1558 | } else if (!strncmp(this_opt, "upper:", 6)) { |
| 1559 | mode->upper_margin = simple_strtoul(this_opt+6, NULL, 0); |
| 1560 | sprintf(s, "upper: %u\n", mode->upper_margin); |
| 1561 | } else if (!strncmp(this_opt, "lower:", 6)) { |
| 1562 | mode->lower_margin = simple_strtoul(this_opt+6, NULL, 0); |
| 1563 | sprintf(s, "lower: %u\n", mode->lower_margin); |
| 1564 | } else if (!strncmp(this_opt, "hsynclen:", 9)) { |
| 1565 | mode->hsync_len = simple_strtoul(this_opt+9, NULL, 0); |
| 1566 | sprintf(s, "hsynclen: %u\n", mode->hsync_len); |
| 1567 | } else if (!strncmp(this_opt, "vsynclen:", 9)) { |
| 1568 | mode->vsync_len = simple_strtoul(this_opt+9, NULL, 0); |
| 1569 | sprintf(s, "vsynclen: %u\n", mode->vsync_len); |
| 1570 | } else if (!strncmp(this_opt, "hsync:", 6)) { |
| 1571 | if (simple_strtoul(this_opt+6, NULL, 0) == 0) { |
| 1572 | sprintf(s, "hsync: Active Low\n"); |
| 1573 | mode->sync &= ~FB_SYNC_HOR_HIGH_ACT; |
| 1574 | } else { |
| 1575 | sprintf(s, "hsync: Active High\n"); |
| 1576 | mode->sync |= FB_SYNC_HOR_HIGH_ACT; |
| 1577 | } |
| 1578 | } else if (!strncmp(this_opt, "vsync:", 6)) { |
| 1579 | if (simple_strtoul(this_opt+6, NULL, 0) == 0) { |
| 1580 | sprintf(s, "vsync: Active Low\n"); |
| 1581 | mode->sync &= ~FB_SYNC_VERT_HIGH_ACT; |
| 1582 | } else { |
| 1583 | sprintf(s, "vsync: Active High\n"); |
| 1584 | mode->sync |= FB_SYNC_VERT_HIGH_ACT; |
| 1585 | } |
| 1586 | } else if (!strncmp(this_opt, "dpc:", 4)) { |
| 1587 | if (simple_strtoul(this_opt+4, NULL, 0) == 0) { |
| 1588 | sprintf(s, "double pixel clock: false\n"); |
| 1589 | inf->lccr3 &= ~LCCR3_DPC; |
| 1590 | } else { |
| 1591 | sprintf(s, "double pixel clock: true\n"); |
| 1592 | inf->lccr3 |= LCCR3_DPC; |
| 1593 | } |
| 1594 | } else if (!strncmp(this_opt, "outputen:", 9)) { |
| 1595 | if (simple_strtoul(this_opt+9, NULL, 0) == 0) { |
| 1596 | sprintf(s, "output enable: active low\n"); |
| 1597 | inf->lccr3 = (inf->lccr3 & ~LCCR3_OEP) | LCCR3_OutEnL; |
| 1598 | } else { |
| 1599 | sprintf(s, "output enable: active high\n"); |
| 1600 | inf->lccr3 = (inf->lccr3 & ~LCCR3_OEP) | LCCR3_OutEnH; |
| 1601 | } |
| 1602 | } else if (!strncmp(this_opt, "pixclockpol:", 12)) { |
| 1603 | if (simple_strtoul(this_opt+12, NULL, 0) == 0) { |
| 1604 | sprintf(s, "pixel clock polarity: falling edge\n"); |
| 1605 | inf->lccr3 = (inf->lccr3 & ~LCCR3_PCP) | LCCR3_PixFlEdg; |
| 1606 | } else { |
| 1607 | sprintf(s, "pixel clock polarity: rising edge\n"); |
| 1608 | inf->lccr3 = (inf->lccr3 & ~LCCR3_PCP) | LCCR3_PixRsEdg; |
| 1609 | } |
| 1610 | } else if (!strncmp(this_opt, "color", 5)) { |
| 1611 | inf->lccr0 = (inf->lccr0 & ~LCCR0_CMS) | LCCR0_Color; |
| 1612 | } else if (!strncmp(this_opt, "mono", 4)) { |
| 1613 | inf->lccr0 = (inf->lccr0 & ~LCCR0_CMS) | LCCR0_Mono; |
| 1614 | } else if (!strncmp(this_opt, "active", 6)) { |
| 1615 | inf->lccr0 = (inf->lccr0 & ~LCCR0_PAS) | LCCR0_Act; |
| 1616 | } else if (!strncmp(this_opt, "passive", 7)) { |
| 1617 | inf->lccr0 = (inf->lccr0 & ~LCCR0_PAS) | LCCR0_Pas; |
| 1618 | } else if (!strncmp(this_opt, "single", 6)) { |
| 1619 | inf->lccr0 = (inf->lccr0 & ~LCCR0_SDS) | LCCR0_Sngl; |
| 1620 | } else if (!strncmp(this_opt, "dual", 4)) { |
| 1621 | inf->lccr0 = (inf->lccr0 & ~LCCR0_SDS) | LCCR0_Dual; |
| 1622 | } else if (!strncmp(this_opt, "4pix", 4)) { |
| 1623 | inf->lccr0 = (inf->lccr0 & ~LCCR0_DPD) | LCCR0_4PixMono; |
| 1624 | } else if (!strncmp(this_opt, "8pix", 4)) { |
| 1625 | inf->lccr0 = (inf->lccr0 & ~LCCR0_DPD) | LCCR0_8PixMono; |
| 1626 | } else { |
| 1627 | dev_err(dev, "unknown option: %s\n", this_opt); |
| 1628 | return -EINVAL; |
| 1629 | } |
| 1630 | |
| 1631 | if (s[0] != '\0') |
| 1632 | dev_info(dev, "override %s", s); |
| 1633 | |
| 1634 | return 0; |
| 1635 | } |
| 1636 | |
Jaya Kumar | 9e6c297 | 2008-06-22 04:27:27 +0100 | [diff] [blame] | 1637 | static int __devinit pxafb_parse_options(struct device *dev, char *options) |
eric miao | 817daf1 | 2008-04-30 00:52:18 -0700 | [diff] [blame] | 1638 | { |
| 1639 | char *this_opt; |
| 1640 | int ret; |
| 1641 | |
| 1642 | if (!options || !*options) |
| 1643 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1644 | |
| 1645 | dev_dbg(dev, "options are \"%s\"\n", options ? options : "null"); |
| 1646 | |
| 1647 | /* could be made table driven or similar?... */ |
eric miao | 817daf1 | 2008-04-30 00:52:18 -0700 | [diff] [blame] | 1648 | while ((this_opt = strsep(&options, ",")) != NULL) { |
| 1649 | ret = parse_opt(dev, this_opt); |
| 1650 | if (ret) |
| 1651 | return ret; |
| 1652 | } |
| 1653 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1654 | } |
eric miao | 92ac73c | 2008-04-30 00:52:20 -0700 | [diff] [blame] | 1655 | |
| 1656 | static char g_options[256] __devinitdata = ""; |
| 1657 | |
Jaya Kumar | f1edfc4 | 2008-06-22 04:27:25 +0100 | [diff] [blame] | 1658 | #ifndef MODULE |
Jaya Kumar | 9e6c297 | 2008-06-22 04:27:27 +0100 | [diff] [blame] | 1659 | static int __init pxafb_setup_options(void) |
eric miao | 92ac73c | 2008-04-30 00:52:20 -0700 | [diff] [blame] | 1660 | { |
| 1661 | char *options = NULL; |
| 1662 | |
| 1663 | if (fb_get_options("pxafb", &options)) |
| 1664 | return -ENODEV; |
| 1665 | |
| 1666 | if (options) |
| 1667 | strlcpy(g_options, options, sizeof(g_options)); |
| 1668 | |
| 1669 | return 0; |
| 1670 | } |
| 1671 | #else |
| 1672 | #define pxafb_setup_options() (0) |
| 1673 | |
| 1674 | module_param_string(options, g_options, sizeof(g_options), 0); |
| 1675 | MODULE_PARM_DESC(options, "LCD parameters (see Documentation/fb/pxafb.txt)"); |
| 1676 | #endif |
| 1677 | |
| 1678 | #else |
| 1679 | #define pxafb_parse_options(...) (0) |
| 1680 | #define pxafb_setup_options() (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1681 | #endif |
| 1682 | |
Eric Miao | 4f3e266 | 2008-08-16 03:50:51 -0400 | [diff] [blame] | 1683 | #ifdef DEBUG_VAR |
| 1684 | /* Check for various illegal bit-combinations. Currently only |
| 1685 | * a warning is given. */ |
| 1686 | static void __devinit pxafb_check_options(struct device *dev, |
| 1687 | struct pxafb_mach_info *inf) |
| 1688 | { |
| 1689 | if (inf->lcd_conn) |
| 1690 | return; |
| 1691 | |
| 1692 | if (inf->lccr0 & LCCR0_INVALID_CONFIG_MASK) |
| 1693 | dev_warn(dev, "machine LCCR0 setting contains " |
| 1694 | "illegal bits: %08x\n", |
| 1695 | inf->lccr0 & LCCR0_INVALID_CONFIG_MASK); |
| 1696 | if (inf->lccr3 & LCCR3_INVALID_CONFIG_MASK) |
| 1697 | dev_warn(dev, "machine LCCR3 setting contains " |
| 1698 | "illegal bits: %08x\n", |
| 1699 | inf->lccr3 & LCCR3_INVALID_CONFIG_MASK); |
| 1700 | if (inf->lccr0 & LCCR0_DPD && |
| 1701 | ((inf->lccr0 & LCCR0_PAS) != LCCR0_Pas || |
| 1702 | (inf->lccr0 & LCCR0_SDS) != LCCR0_Sngl || |
| 1703 | (inf->lccr0 & LCCR0_CMS) != LCCR0_Mono)) |
| 1704 | dev_warn(dev, "Double Pixel Data (DPD) mode is " |
| 1705 | "only valid in passive mono" |
| 1706 | " single panel mode\n"); |
| 1707 | if ((inf->lccr0 & LCCR0_PAS) == LCCR0_Act && |
| 1708 | (inf->lccr0 & LCCR0_SDS) == LCCR0_Dual) |
| 1709 | dev_warn(dev, "Dual panel only valid in passive mode\n"); |
| 1710 | if ((inf->lccr0 & LCCR0_PAS) == LCCR0_Pas && |
| 1711 | (inf->modes->upper_margin || inf->modes->lower_margin)) |
| 1712 | dev_warn(dev, "Upper and lower margins must be 0 in " |
| 1713 | "passive mode\n"); |
| 1714 | } |
| 1715 | #else |
| 1716 | #define pxafb_check_options(...) do {} while (0) |
| 1717 | #endif |
| 1718 | |
Jaya Kumar | 9e6c297 | 2008-06-22 04:27:27 +0100 | [diff] [blame] | 1719 | static int __devinit pxafb_probe(struct platform_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1720 | { |
| 1721 | struct pxafb_info *fbi; |
| 1722 | struct pxafb_mach_info *inf; |
eric miao | ce4fb7b | 2008-04-30 00:52:21 -0700 | [diff] [blame] | 1723 | struct resource *r; |
| 1724 | int irq, ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1725 | |
Richard Purdie | 2cbbb3b | 2006-03-31 02:31:53 -0800 | [diff] [blame] | 1726 | dev_dbg(&dev->dev, "pxafb_probe\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1727 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1728 | inf = dev->dev.platform_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1729 | ret = -ENOMEM; |
| 1730 | fbi = NULL; |
| 1731 | if (!inf) |
| 1732 | goto failed; |
| 1733 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1734 | ret = pxafb_parse_options(&dev->dev, g_options); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1735 | if (ret < 0) |
| 1736 | goto failed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1737 | |
Eric Miao | 4f3e266 | 2008-08-16 03:50:51 -0400 | [diff] [blame] | 1738 | pxafb_check_options(&dev->dev, inf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1739 | |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 1740 | dev_dbg(&dev->dev, "got a %dx%dx%d LCD\n", |
| 1741 | inf->modes->xres, |
| 1742 | inf->modes->yres, |
| 1743 | inf->modes->bpp); |
| 1744 | if (inf->modes->xres == 0 || |
| 1745 | inf->modes->yres == 0 || |
| 1746 | inf->modes->bpp == 0) { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1747 | dev_err(&dev->dev, "Invalid resolution or bit depth\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1748 | ret = -EINVAL; |
| 1749 | goto failed; |
| 1750 | } |
| 1751 | pxafb_backlight_power = inf->pxafb_backlight_power; |
| 1752 | pxafb_lcd_power = inf->pxafb_lcd_power; |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1753 | fbi = pxafb_init_fbinfo(&dev->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1754 | if (!fbi) { |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 1755 | /* only reason for pxafb_init_fbinfo to fail is kmalloc */ |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1756 | dev_err(&dev->dev, "Failed to initialize framebuffer device\n"); |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 1757 | ret = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1758 | goto failed; |
| 1759 | } |
| 1760 | |
eric miao | ce4fb7b | 2008-04-30 00:52:21 -0700 | [diff] [blame] | 1761 | r = platform_get_resource(dev, IORESOURCE_MEM, 0); |
| 1762 | if (r == NULL) { |
| 1763 | dev_err(&dev->dev, "no I/O memory resource defined\n"); |
| 1764 | ret = -ENODEV; |
Jaya Kumar | ee98476 | 2008-06-22 04:27:26 +0100 | [diff] [blame] | 1765 | goto failed_fbi; |
eric miao | ce4fb7b | 2008-04-30 00:52:21 -0700 | [diff] [blame] | 1766 | } |
| 1767 | |
| 1768 | r = request_mem_region(r->start, r->end - r->start + 1, dev->name); |
| 1769 | if (r == NULL) { |
| 1770 | dev_err(&dev->dev, "failed to request I/O memory\n"); |
| 1771 | ret = -EBUSY; |
Jaya Kumar | ee98476 | 2008-06-22 04:27:26 +0100 | [diff] [blame] | 1772 | goto failed_fbi; |
eric miao | ce4fb7b | 2008-04-30 00:52:21 -0700 | [diff] [blame] | 1773 | } |
| 1774 | |
| 1775 | fbi->mmio_base = ioremap(r->start, r->end - r->start + 1); |
| 1776 | if (fbi->mmio_base == NULL) { |
| 1777 | dev_err(&dev->dev, "failed to map I/O memory\n"); |
| 1778 | ret = -EBUSY; |
| 1779 | goto failed_free_res; |
| 1780 | } |
| 1781 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1782 | /* Initialize video memory */ |
| 1783 | ret = pxafb_map_video_memory(fbi); |
| 1784 | if (ret) { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1785 | dev_err(&dev->dev, "Failed to allocate video RAM: %d\n", ret); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1786 | ret = -ENOMEM; |
eric miao | ce4fb7b | 2008-04-30 00:52:21 -0700 | [diff] [blame] | 1787 | goto failed_free_io; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1788 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1789 | |
eric miao | ce4fb7b | 2008-04-30 00:52:21 -0700 | [diff] [blame] | 1790 | irq = platform_get_irq(dev, 0); |
| 1791 | if (irq < 0) { |
| 1792 | dev_err(&dev->dev, "no IRQ defined\n"); |
| 1793 | ret = -ENODEV; |
| 1794 | goto failed_free_mem; |
| 1795 | } |
| 1796 | |
| 1797 | ret = request_irq(irq, pxafb_handle_irq, IRQF_DISABLED, "LCD", fbi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1798 | if (ret) { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1799 | dev_err(&dev->dev, "request_irq failed: %d\n", ret); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1800 | ret = -EBUSY; |
eric miao | ce4fb7b | 2008-04-30 00:52:21 -0700 | [diff] [blame] | 1801 | goto failed_free_mem; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1802 | } |
| 1803 | |
Eric Miao | 3c42a44 | 2008-04-30 00:52:26 -0700 | [diff] [blame] | 1804 | #ifdef CONFIG_FB_PXA_SMARTPANEL |
| 1805 | ret = pxafb_smart_init(fbi); |
| 1806 | if (ret) { |
| 1807 | dev_err(&dev->dev, "failed to initialize smartpanel\n"); |
| 1808 | goto failed_free_irq; |
| 1809 | } |
| 1810 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1811 | /* |
| 1812 | * This makes sure that our colour bitfield |
| 1813 | * descriptors are correctly initialised. |
| 1814 | */ |
Jaya Kumar | ee98476 | 2008-06-22 04:27:26 +0100 | [diff] [blame] | 1815 | ret = pxafb_check_var(&fbi->fb.var, &fbi->fb); |
| 1816 | if (ret) { |
| 1817 | dev_err(&dev->dev, "failed to get suitable mode\n"); |
| 1818 | goto failed_free_irq; |
| 1819 | } |
| 1820 | |
| 1821 | ret = pxafb_set_par(&fbi->fb); |
| 1822 | if (ret) { |
| 1823 | dev_err(&dev->dev, "Failed to set parameters\n"); |
| 1824 | goto failed_free_irq; |
| 1825 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1826 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1827 | platform_set_drvdata(dev, fbi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1828 | |
| 1829 | ret = register_framebuffer(&fbi->fb); |
| 1830 | if (ret < 0) { |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 1831 | dev_err(&dev->dev, |
| 1832 | "Failed to register framebuffer device: %d\n", ret); |
Jaya Kumar | ee98476 | 2008-06-22 04:27:26 +0100 | [diff] [blame] | 1833 | goto failed_free_cmap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1834 | } |
| 1835 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1836 | #ifdef CONFIG_CPU_FREQ |
| 1837 | fbi->freq_transition.notifier_call = pxafb_freq_transition; |
| 1838 | fbi->freq_policy.notifier_call = pxafb_freq_policy; |
eric miao | b0086ef | 2008-04-30 00:52:19 -0700 | [diff] [blame] | 1839 | cpufreq_register_notifier(&fbi->freq_transition, |
| 1840 | CPUFREQ_TRANSITION_NOTIFIER); |
| 1841 | cpufreq_register_notifier(&fbi->freq_policy, |
| 1842 | CPUFREQ_POLICY_NOTIFIER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1843 | #endif |
| 1844 | |
| 1845 | /* |
| 1846 | * Ok, now enable the LCD controller |
| 1847 | */ |
| 1848 | set_ctrlr_state(fbi, C_ENABLE); |
| 1849 | |
| 1850 | return 0; |
| 1851 | |
Jaya Kumar | ee98476 | 2008-06-22 04:27:26 +0100 | [diff] [blame] | 1852 | failed_free_cmap: |
| 1853 | if (fbi->fb.cmap.len) |
| 1854 | fb_dealloc_cmap(&fbi->fb.cmap); |
eric miao | ce4fb7b | 2008-04-30 00:52:21 -0700 | [diff] [blame] | 1855 | failed_free_irq: |
| 1856 | free_irq(irq, fbi); |
eric miao | ce4fb7b | 2008-04-30 00:52:21 -0700 | [diff] [blame] | 1857 | failed_free_mem: |
| 1858 | dma_free_writecombine(&dev->dev, fbi->map_size, |
| 1859 | fbi->map_cpu, fbi->map_dma); |
Jaya Kumar | ee98476 | 2008-06-22 04:27:26 +0100 | [diff] [blame] | 1860 | failed_free_io: |
| 1861 | iounmap(fbi->mmio_base); |
| 1862 | failed_free_res: |
| 1863 | release_mem_region(r->start, r->end - r->start + 1); |
| 1864 | failed_fbi: |
| 1865 | clk_put(fbi->clk); |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1866 | platform_set_drvdata(dev, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1867 | kfree(fbi); |
Jaya Kumar | ee98476 | 2008-06-22 04:27:26 +0100 | [diff] [blame] | 1868 | failed: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1869 | return ret; |
| 1870 | } |
| 1871 | |
Jaya Kumar | 9f17f28 | 2008-06-22 04:27:28 +0100 | [diff] [blame] | 1872 | static int __devexit pxafb_remove(struct platform_device *dev) |
| 1873 | { |
| 1874 | struct pxafb_info *fbi = platform_get_drvdata(dev); |
| 1875 | struct resource *r; |
| 1876 | int irq; |
| 1877 | struct fb_info *info; |
| 1878 | |
| 1879 | if (!fbi) |
| 1880 | return 0; |
| 1881 | |
| 1882 | info = &fbi->fb; |
| 1883 | |
| 1884 | unregister_framebuffer(info); |
| 1885 | |
| 1886 | pxafb_disable_controller(fbi); |
| 1887 | |
| 1888 | if (fbi->fb.cmap.len) |
| 1889 | fb_dealloc_cmap(&fbi->fb.cmap); |
| 1890 | |
| 1891 | irq = platform_get_irq(dev, 0); |
| 1892 | free_irq(irq, fbi); |
| 1893 | |
| 1894 | dma_free_writecombine(&dev->dev, fbi->map_size, |
| 1895 | fbi->map_cpu, fbi->map_dma); |
| 1896 | |
| 1897 | iounmap(fbi->mmio_base); |
| 1898 | |
| 1899 | r = platform_get_resource(dev, IORESOURCE_MEM, 0); |
| 1900 | release_mem_region(r->start, r->end - r->start + 1); |
| 1901 | |
| 1902 | clk_put(fbi->clk); |
| 1903 | kfree(fbi); |
| 1904 | |
| 1905 | return 0; |
| 1906 | } |
| 1907 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1908 | static struct platform_driver pxafb_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1909 | .probe = pxafb_probe, |
Jaya Kumar | 9f17f28 | 2008-06-22 04:27:28 +0100 | [diff] [blame] | 1910 | .remove = pxafb_remove, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1911 | .suspend = pxafb_suspend, |
| 1912 | .resume = pxafb_resume, |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1913 | .driver = { |
Jaya Kumar | 9f17f28 | 2008-06-22 04:27:28 +0100 | [diff] [blame] | 1914 | .owner = THIS_MODULE, |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1915 | .name = "pxa2xx-fb", |
| 1916 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1917 | }; |
| 1918 | |
Jaya Kumar | 9e6c297 | 2008-06-22 04:27:27 +0100 | [diff] [blame] | 1919 | static int __init pxafb_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1920 | { |
eric miao | 92ac73c | 2008-04-30 00:52:20 -0700 | [diff] [blame] | 1921 | if (pxafb_setup_options()) |
| 1922 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1923 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1924 | return platform_driver_register(&pxafb_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1925 | } |
| 1926 | |
Jaya Kumar | 9f17f28 | 2008-06-22 04:27:28 +0100 | [diff] [blame] | 1927 | static void __exit pxafb_exit(void) |
| 1928 | { |
| 1929 | platform_driver_unregister(&pxafb_driver); |
| 1930 | } |
| 1931 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1932 | module_init(pxafb_init); |
Jaya Kumar | 9f17f28 | 2008-06-22 04:27:28 +0100 | [diff] [blame] | 1933 | module_exit(pxafb_exit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1934 | |
| 1935 | MODULE_DESCRIPTION("loadable framebuffer driver for PXA"); |
| 1936 | MODULE_LICENSE("GPL"); |