Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 1 | /* |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 2 | * Freescale i.MX Frame Buffer device driver |
| 3 | * |
| 4 | * Copyright (C) 2004 Sascha Hauer, Pengutronix |
| 5 | * Based on acornfb.c Copyright (C) Russell King. |
| 6 | * |
| 7 | * This file is subject to the terms and conditions of the GNU General Public |
| 8 | * License. See the file COPYING in the main directory of this archive for |
| 9 | * more details. |
| 10 | * |
| 11 | * Please direct your questions and comments on this driver to the following |
| 12 | * email address: |
| 13 | * |
| 14 | * linux-arm-kernel@lists.arm.linux.org.uk |
| 15 | */ |
| 16 | |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 17 | #include <linux/module.h> |
| 18 | #include <linux/kernel.h> |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 19 | #include <linux/errno.h> |
| 20 | #include <linux/string.h> |
| 21 | #include <linux/interrupt.h> |
| 22 | #include <linux/slab.h> |
Andrea Righi | 27ac792 | 2008-07-23 21:28:13 -0700 | [diff] [blame] | 23 | #include <linux/mm.h> |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 24 | #include <linux/fb.h> |
| 25 | #include <linux/delay.h> |
| 26 | #include <linux/init.h> |
| 27 | #include <linux/ioport.h> |
| 28 | #include <linux/cpufreq.h> |
Sascha Hauer | f909ef6 | 2009-01-15 15:21:00 +0100 | [diff] [blame] | 29 | #include <linux/clk.h> |
Russell King | d052d1b | 2005-10-29 19:07:23 +0100 | [diff] [blame] | 30 | #include <linux/platform_device.h> |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 31 | #include <linux/dma-mapping.h> |
Juergen Beisert | 72330b0 | 2008-12-16 11:44:07 +0100 | [diff] [blame] | 32 | #include <linux/io.h> |
Alexander Shiyan | 9fe21fd | 2013-12-21 15:08:00 +0400 | [diff] [blame] | 33 | #include <linux/lcd.h> |
Sascha Hauer | f909ef6 | 2009-01-15 15:21:00 +0100 | [diff] [blame] | 34 | #include <linux/math64.h> |
Markus Pargmann | 1b6c793 | 2013-05-26 12:35:38 +0200 | [diff] [blame] | 35 | #include <linux/of.h> |
| 36 | #include <linux/of_device.h> |
| 37 | |
Alexander Shiyan | 9fe21fd | 2013-12-21 15:08:00 +0400 | [diff] [blame] | 38 | #include <linux/regulator/consumer.h> |
| 39 | |
Markus Pargmann | 1b6c793 | 2013-05-26 12:35:38 +0200 | [diff] [blame] | 40 | #include <video/of_display_timing.h> |
| 41 | #include <video/of_videomode.h> |
| 42 | #include <video/videomode.h> |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 43 | |
Arnd Bergmann | 82906b1 | 2012-08-24 15:14:29 +0200 | [diff] [blame] | 44 | #include <linux/platform_data/video-imxfb.h> |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 45 | |
| 46 | /* |
| 47 | * Complain if VAR is out of range. |
| 48 | */ |
| 49 | #define DEBUG_VAR 1 |
| 50 | |
Juergen Beisert | 72330b0 | 2008-12-16 11:44:07 +0100 | [diff] [blame] | 51 | #define DRIVER_NAME "imx-fb" |
| 52 | |
| 53 | #define LCDC_SSA 0x00 |
| 54 | |
| 55 | #define LCDC_SIZE 0x04 |
| 56 | #define SIZE_XMAX(x) ((((x) >> 4) & 0x3f) << 20) |
Sascha Hauer | 1d0f987 | 2009-01-26 17:29:10 +0100 | [diff] [blame] | 57 | |
Shawn Guo | e69dc9a | 2012-09-16 19:59:53 +0800 | [diff] [blame] | 58 | #define YMAX_MASK_IMX1 0x1ff |
| 59 | #define YMAX_MASK_IMX21 0x3ff |
Juergen Beisert | 72330b0 | 2008-12-16 11:44:07 +0100 | [diff] [blame] | 60 | |
| 61 | #define LCDC_VPW 0x08 |
| 62 | #define VPW_VPW(x) ((x) & 0x3ff) |
| 63 | |
| 64 | #define LCDC_CPOS 0x0C |
| 65 | #define CPOS_CC1 (1<<31) |
| 66 | #define CPOS_CC0 (1<<30) |
| 67 | #define CPOS_OP (1<<28) |
| 68 | #define CPOS_CXP(x) (((x) & 3ff) << 16) |
Sascha Hauer | 1d0f987 | 2009-01-26 17:29:10 +0100 | [diff] [blame] | 69 | |
Juergen Beisert | 72330b0 | 2008-12-16 11:44:07 +0100 | [diff] [blame] | 70 | #define LCDC_LCWHB 0x10 |
| 71 | #define LCWHB_BK_EN (1<<31) |
| 72 | #define LCWHB_CW(w) (((w) & 0x1f) << 24) |
| 73 | #define LCWHB_CH(h) (((h) & 0x1f) << 16) |
| 74 | #define LCWHB_BD(x) ((x) & 0xff) |
| 75 | |
| 76 | #define LCDC_LCHCC 0x14 |
Sascha Hauer | 1d0f987 | 2009-01-26 17:29:10 +0100 | [diff] [blame] | 77 | |
Juergen Beisert | 72330b0 | 2008-12-16 11:44:07 +0100 | [diff] [blame] | 78 | #define LCDC_PCR 0x18 |
| 79 | |
| 80 | #define LCDC_HCR 0x1C |
| 81 | #define HCR_H_WIDTH(x) (((x) & 0x3f) << 26) |
| 82 | #define HCR_H_WAIT_1(x) (((x) & 0xff) << 8) |
| 83 | #define HCR_H_WAIT_2(x) ((x) & 0xff) |
| 84 | |
| 85 | #define LCDC_VCR 0x20 |
| 86 | #define VCR_V_WIDTH(x) (((x) & 0x3f) << 26) |
| 87 | #define VCR_V_WAIT_1(x) (((x) & 0xff) << 8) |
| 88 | #define VCR_V_WAIT_2(x) ((x) & 0xff) |
| 89 | |
| 90 | #define LCDC_POS 0x24 |
| 91 | #define POS_POS(x) ((x) & 1f) |
| 92 | |
| 93 | #define LCDC_LSCR1 0x28 |
| 94 | /* bit fields in imxfb.h */ |
| 95 | |
| 96 | #define LCDC_PWMR 0x2C |
| 97 | /* bit fields in imxfb.h */ |
| 98 | |
| 99 | #define LCDC_DMACR 0x30 |
| 100 | /* bit fields in imxfb.h */ |
| 101 | |
| 102 | #define LCDC_RMCR 0x34 |
Sascha Hauer | 1d0f987 | 2009-01-26 17:29:10 +0100 | [diff] [blame] | 103 | |
Sascha Hauer | f142b61 | 2011-03-03 15:12:44 +0100 | [diff] [blame] | 104 | #define RMCR_LCDC_EN_MX1 (1<<1) |
Sascha Hauer | 1d0f987 | 2009-01-26 17:29:10 +0100 | [diff] [blame] | 105 | |
Juergen Beisert | 72330b0 | 2008-12-16 11:44:07 +0100 | [diff] [blame] | 106 | #define RMCR_SELF_REF (1<<0) |
| 107 | |
| 108 | #define LCDC_LCDICR 0x38 |
| 109 | #define LCDICR_INT_SYN (1<<2) |
| 110 | #define LCDICR_INT_CON (1) |
| 111 | |
| 112 | #define LCDC_LCDISR 0x40 |
| 113 | #define LCDISR_UDR_ERR (1<<3) |
| 114 | #define LCDISR_ERR_RES (1<<2) |
| 115 | #define LCDISR_EOF (1<<1) |
| 116 | #define LCDISR_BOF (1<<0) |
| 117 | |
Markus Pargmann | 1b6c793 | 2013-05-26 12:35:38 +0200 | [diff] [blame] | 118 | #define IMXFB_LSCR1_DEFAULT 0x00120300 |
| 119 | |
Sascha Hauer | 343684f | 2009-03-19 08:25:41 +0100 | [diff] [blame] | 120 | /* Used fb-mode. Can be set on kernel command line, therefore file-static. */ |
| 121 | static const char *fb_mode; |
| 122 | |
Sascha Hauer | 24b9baf | 2008-12-16 11:44:08 +0100 | [diff] [blame] | 123 | /* |
| 124 | * These are the bitfields for each |
| 125 | * display depth that we support. |
| 126 | */ |
| 127 | struct imxfb_rgb { |
| 128 | struct fb_bitfield red; |
| 129 | struct fb_bitfield green; |
| 130 | struct fb_bitfield blue; |
| 131 | struct fb_bitfield transp; |
| 132 | }; |
| 133 | |
Shawn Guo | e69dc9a | 2012-09-16 19:59:53 +0800 | [diff] [blame] | 134 | enum imxfb_type { |
| 135 | IMX1_FB, |
| 136 | IMX21_FB, |
| 137 | }; |
| 138 | |
Sascha Hauer | 24b9baf | 2008-12-16 11:44:08 +0100 | [diff] [blame] | 139 | struct imxfb_info { |
| 140 | struct platform_device *pdev; |
| 141 | void __iomem *regs; |
Sascha Hauer | 13aaea0 | 2012-03-07 09:30:36 +0100 | [diff] [blame] | 142 | struct clk *clk_ipg; |
| 143 | struct clk *clk_ahb; |
| 144 | struct clk *clk_per; |
Shawn Guo | e69dc9a | 2012-09-16 19:59:53 +0800 | [diff] [blame] | 145 | enum imxfb_type devtype; |
Fabio Estevam | e6b267c | 2013-01-16 10:58:41 -0200 | [diff] [blame] | 146 | bool enabled; |
Sascha Hauer | 24b9baf | 2008-12-16 11:44:08 +0100 | [diff] [blame] | 147 | |
Sascha Hauer | 24b9baf | 2008-12-16 11:44:08 +0100 | [diff] [blame] | 148 | /* |
| 149 | * These are the addresses we mapped |
| 150 | * the framebuffer memory region to. |
| 151 | */ |
| 152 | dma_addr_t map_dma; |
Sascha Hauer | 24b9baf | 2008-12-16 11:44:08 +0100 | [diff] [blame] | 153 | u_int map_size; |
| 154 | |
Sascha Hauer | 24b9baf | 2008-12-16 11:44:08 +0100 | [diff] [blame] | 155 | u_int palette_size; |
| 156 | |
| 157 | dma_addr_t dbar1; |
| 158 | dma_addr_t dbar2; |
| 159 | |
| 160 | u_int pcr; |
| 161 | u_int pwmr; |
| 162 | u_int lscr1; |
| 163 | u_int dmacr; |
Alexander Shiyan | b7d2d37 | 2014-02-15 09:56:23 +0400 | [diff] [blame] | 164 | bool cmap_inverse; |
| 165 | bool cmap_static; |
Sascha Hauer | 24b9baf | 2008-12-16 11:44:08 +0100 | [diff] [blame] | 166 | |
Sascha Hauer | 343684f | 2009-03-19 08:25:41 +0100 | [diff] [blame] | 167 | struct imx_fb_videomode *mode; |
| 168 | int num_modes; |
| 169 | |
Alexander Shiyan | 9fe21fd | 2013-12-21 15:08:00 +0400 | [diff] [blame] | 170 | struct regulator *lcd_pwr; |
Sascha Hauer | 24b9baf | 2008-12-16 11:44:08 +0100 | [diff] [blame] | 171 | }; |
| 172 | |
Krzysztof Kozlowski | bd388a2 | 2015-05-02 00:38:39 +0900 | [diff] [blame] | 173 | static const struct platform_device_id imxfb_devtype[] = { |
Shawn Guo | e69dc9a | 2012-09-16 19:59:53 +0800 | [diff] [blame] | 174 | { |
| 175 | .name = "imx1-fb", |
| 176 | .driver_data = IMX1_FB, |
| 177 | }, { |
| 178 | .name = "imx21-fb", |
| 179 | .driver_data = IMX21_FB, |
| 180 | }, { |
| 181 | /* sentinel */ |
| 182 | } |
| 183 | }; |
| 184 | MODULE_DEVICE_TABLE(platform, imxfb_devtype); |
| 185 | |
Sanjeev Sharma | 5d80244 | 2015-02-09 16:32:27 +0530 | [diff] [blame] | 186 | static const struct of_device_id imxfb_of_dev_id[] = { |
Markus Pargmann | 1b6c793 | 2013-05-26 12:35:38 +0200 | [diff] [blame] | 187 | { |
| 188 | .compatible = "fsl,imx1-fb", |
| 189 | .data = &imxfb_devtype[IMX1_FB], |
| 190 | }, { |
| 191 | .compatible = "fsl,imx21-fb", |
| 192 | .data = &imxfb_devtype[IMX21_FB], |
| 193 | }, { |
| 194 | /* sentinel */ |
| 195 | } |
| 196 | }; |
| 197 | MODULE_DEVICE_TABLE(of, imxfb_of_dev_id); |
| 198 | |
Shawn Guo | e69dc9a | 2012-09-16 19:59:53 +0800 | [diff] [blame] | 199 | static inline int is_imx1_fb(struct imxfb_info *fbi) |
| 200 | { |
| 201 | return fbi->devtype == IMX1_FB; |
| 202 | } |
| 203 | |
Sascha Hauer | 24b9baf | 2008-12-16 11:44:08 +0100 | [diff] [blame] | 204 | #define IMX_NAME "IMX" |
| 205 | |
| 206 | /* |
| 207 | * Minimum X and Y resolutions |
| 208 | */ |
| 209 | #define MIN_XRES 64 |
| 210 | #define MIN_YRES 64 |
| 211 | |
Sascha Hauer | 1512222 | 2009-01-26 17:31:02 +0100 | [diff] [blame] | 212 | /* Actually this really is 18bit support, the lowest 2 bits of each colour |
| 213 | * are unused in hardware. We claim to have 24bit support to make software |
| 214 | * like X work, which does not support 18bit. |
| 215 | */ |
| 216 | static struct imxfb_rgb def_rgb_18 = { |
| 217 | .red = {.offset = 16, .length = 8,}, |
| 218 | .green = {.offset = 8, .length = 8,}, |
| 219 | .blue = {.offset = 0, .length = 8,}, |
| 220 | .transp = {.offset = 0, .length = 0,}, |
| 221 | }; |
| 222 | |
Sascha Hauer | 80eee6b | 2008-12-16 11:44:09 +0100 | [diff] [blame] | 223 | static struct imxfb_rgb def_rgb_16_tft = { |
| 224 | .red = {.offset = 11, .length = 5,}, |
| 225 | .green = {.offset = 5, .length = 6,}, |
| 226 | .blue = {.offset = 0, .length = 5,}, |
| 227 | .transp = {.offset = 0, .length = 0,}, |
| 228 | }; |
| 229 | |
| 230 | static struct imxfb_rgb def_rgb_16_stn = { |
Sascha Hauer | 66c8719 | 2008-12-16 11:44:08 +0100 | [diff] [blame] | 231 | .red = {.offset = 8, .length = 4,}, |
| 232 | .green = {.offset = 4, .length = 4,}, |
| 233 | .blue = {.offset = 0, .length = 4,}, |
| 234 | .transp = {.offset = 0, .length = 0,}, |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 235 | }; |
| 236 | |
| 237 | static struct imxfb_rgb def_rgb_8 = { |
Sascha Hauer | 66c8719 | 2008-12-16 11:44:08 +0100 | [diff] [blame] | 238 | .red = {.offset = 0, .length = 8,}, |
| 239 | .green = {.offset = 0, .length = 8,}, |
| 240 | .blue = {.offset = 0, .length = 8,}, |
| 241 | .transp = {.offset = 0, .length = 0,}, |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 242 | }; |
| 243 | |
Sascha Hauer | 66c8719 | 2008-12-16 11:44:08 +0100 | [diff] [blame] | 244 | static int imxfb_activate_var(struct fb_var_screeninfo *var, |
| 245 | struct fb_info *info); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 246 | |
| 247 | static inline u_int chan_to_field(u_int chan, struct fb_bitfield *bf) |
| 248 | { |
| 249 | chan &= 0xffff; |
| 250 | chan >>= 16 - bf->length; |
| 251 | return chan << bf->offset; |
| 252 | } |
| 253 | |
Sascha Hauer | 66c8719 | 2008-12-16 11:44:08 +0100 | [diff] [blame] | 254 | static int imxfb_setpalettereg(u_int regno, u_int red, u_int green, u_int blue, |
| 255 | u_int trans, struct fb_info *info) |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 256 | { |
| 257 | struct imxfb_info *fbi = info->par; |
| 258 | u_int val, ret = 1; |
| 259 | |
| 260 | #define CNVT_TOHW(val,width) ((((val)<<(width))+0x7FFF-(val))>>16) |
| 261 | if (regno < fbi->palette_size) { |
| 262 | val = (CNVT_TOHW(red, 4) << 8) | |
| 263 | (CNVT_TOHW(green,4) << 4) | |
| 264 | CNVT_TOHW(blue, 4); |
| 265 | |
Juergen Beisert | 72330b0 | 2008-12-16 11:44:07 +0100 | [diff] [blame] | 266 | writel(val, fbi->regs + 0x800 + (regno << 2)); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 267 | ret = 0; |
| 268 | } |
| 269 | return ret; |
| 270 | } |
| 271 | |
Sascha Hauer | 66c8719 | 2008-12-16 11:44:08 +0100 | [diff] [blame] | 272 | static int imxfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 273 | u_int trans, struct fb_info *info) |
| 274 | { |
| 275 | struct imxfb_info *fbi = info->par; |
| 276 | unsigned int val; |
| 277 | int ret = 1; |
| 278 | |
| 279 | /* |
| 280 | * If inverse mode was selected, invert all the colours |
| 281 | * rather than the register number. The register number |
| 282 | * is what you poke into the framebuffer to produce the |
| 283 | * colour you requested. |
| 284 | */ |
| 285 | if (fbi->cmap_inverse) { |
| 286 | red = 0xffff - red; |
| 287 | green = 0xffff - green; |
| 288 | blue = 0xffff - blue; |
| 289 | } |
| 290 | |
| 291 | /* |
| 292 | * If greyscale is true, then we convert the RGB value |
| 293 | * to greyscale no mater what visual we are using. |
| 294 | */ |
| 295 | if (info->var.grayscale) |
| 296 | red = green = blue = (19595 * red + 38470 * green + |
| 297 | 7471 * blue) >> 16; |
| 298 | |
| 299 | switch (info->fix.visual) { |
| 300 | case FB_VISUAL_TRUECOLOR: |
| 301 | /* |
| 302 | * 12 or 16-bit True Colour. We encode the RGB value |
| 303 | * according to the RGB bitfield information. |
| 304 | */ |
| 305 | if (regno < 16) { |
| 306 | u32 *pal = info->pseudo_palette; |
| 307 | |
| 308 | val = chan_to_field(red, &info->var.red); |
| 309 | val |= chan_to_field(green, &info->var.green); |
| 310 | val |= chan_to_field(blue, &info->var.blue); |
| 311 | |
| 312 | pal[regno] = val; |
| 313 | ret = 0; |
| 314 | } |
| 315 | break; |
| 316 | |
| 317 | case FB_VISUAL_STATIC_PSEUDOCOLOR: |
| 318 | case FB_VISUAL_PSEUDOCOLOR: |
| 319 | ret = imxfb_setpalettereg(regno, red, green, blue, trans, info); |
| 320 | break; |
| 321 | } |
| 322 | |
| 323 | return ret; |
| 324 | } |
| 325 | |
Sascha Hauer | 343684f | 2009-03-19 08:25:41 +0100 | [diff] [blame] | 326 | static const struct imx_fb_videomode *imxfb_find_mode(struct imxfb_info *fbi) |
| 327 | { |
| 328 | struct imx_fb_videomode *m; |
| 329 | int i; |
| 330 | |
Markus Pargmann | 1b6c793 | 2013-05-26 12:35:38 +0200 | [diff] [blame] | 331 | if (!fb_mode) |
| 332 | return &fbi->mode[0]; |
| 333 | |
Sascha Hauer | 343684f | 2009-03-19 08:25:41 +0100 | [diff] [blame] | 334 | for (i = 0, m = &fbi->mode[0]; i < fbi->num_modes; i++, m++) { |
| 335 | if (!strcmp(m->mode.name, fb_mode)) |
| 336 | return m; |
| 337 | } |
| 338 | return NULL; |
| 339 | } |
| 340 | |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 341 | /* |
| 342 | * imxfb_check_var(): |
| 343 | * Round up in the following order: bits_per_pixel, xres, |
| 344 | * yres, xres_virtual, yres_virtual, xoffset, yoffset, grayscale, |
| 345 | * bitfields, horizontal timing, vertical timing. |
| 346 | */ |
Sascha Hauer | 66c8719 | 2008-12-16 11:44:08 +0100 | [diff] [blame] | 347 | static int imxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 348 | { |
| 349 | struct imxfb_info *fbi = info->par; |
Sascha Hauer | 80eee6b | 2008-12-16 11:44:09 +0100 | [diff] [blame] | 350 | struct imxfb_rgb *rgb; |
Sascha Hauer | 343684f | 2009-03-19 08:25:41 +0100 | [diff] [blame] | 351 | const struct imx_fb_videomode *imxfb_mode; |
| 352 | unsigned long lcd_clk; |
| 353 | unsigned long long tmp; |
| 354 | u32 pcr = 0; |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 355 | |
| 356 | if (var->xres < MIN_XRES) |
| 357 | var->xres = MIN_XRES; |
| 358 | if (var->yres < MIN_YRES) |
| 359 | var->yres = MIN_YRES; |
Sascha Hauer | 343684f | 2009-03-19 08:25:41 +0100 | [diff] [blame] | 360 | |
| 361 | imxfb_mode = imxfb_find_mode(fbi); |
| 362 | if (!imxfb_mode) |
| 363 | return -EINVAL; |
| 364 | |
| 365 | var->xres = imxfb_mode->mode.xres; |
| 366 | var->yres = imxfb_mode->mode.yres; |
| 367 | var->bits_per_pixel = imxfb_mode->bpp; |
| 368 | var->pixclock = imxfb_mode->mode.pixclock; |
| 369 | var->hsync_len = imxfb_mode->mode.hsync_len; |
| 370 | var->left_margin = imxfb_mode->mode.left_margin; |
| 371 | var->right_margin = imxfb_mode->mode.right_margin; |
| 372 | var->vsync_len = imxfb_mode->mode.vsync_len; |
| 373 | var->upper_margin = imxfb_mode->mode.upper_margin; |
| 374 | var->lower_margin = imxfb_mode->mode.lower_margin; |
| 375 | var->sync = imxfb_mode->mode.sync; |
| 376 | var->xres_virtual = max(var->xres_virtual, var->xres); |
| 377 | var->yres_virtual = max(var->yres_virtual, var->yres); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 378 | |
| 379 | pr_debug("var->bits_per_pixel=%d\n", var->bits_per_pixel); |
Sascha Hauer | 343684f | 2009-03-19 08:25:41 +0100 | [diff] [blame] | 380 | |
Sascha Hauer | 13aaea0 | 2012-03-07 09:30:36 +0100 | [diff] [blame] | 381 | lcd_clk = clk_get_rate(fbi->clk_per); |
Sascha Hauer | 343684f | 2009-03-19 08:25:41 +0100 | [diff] [blame] | 382 | |
| 383 | tmp = var->pixclock * (unsigned long long)lcd_clk; |
| 384 | |
| 385 | do_div(tmp, 1000000); |
| 386 | |
| 387 | if (do_div(tmp, 1000000) > 500000) |
| 388 | tmp++; |
| 389 | |
| 390 | pcr = (unsigned int)tmp; |
| 391 | |
| 392 | if (--pcr > 0x3F) { |
| 393 | pcr = 0x3F; |
| 394 | printk(KERN_WARNING "Must limit pixel clock to %luHz\n", |
| 395 | lcd_clk / pcr); |
| 396 | } |
| 397 | |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 398 | switch (var->bits_per_pixel) { |
Sascha Hauer | 1512222 | 2009-01-26 17:31:02 +0100 | [diff] [blame] | 399 | case 32: |
Sascha Hauer | 343684f | 2009-03-19 08:25:41 +0100 | [diff] [blame] | 400 | pcr |= PCR_BPIX_18; |
Sascha Hauer | 1512222 | 2009-01-26 17:31:02 +0100 | [diff] [blame] | 401 | rgb = &def_rgb_18; |
| 402 | break; |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 403 | case 16: |
Sascha Hauer | 80eee6b | 2008-12-16 11:44:09 +0100 | [diff] [blame] | 404 | default: |
Shawn Guo | e69dc9a | 2012-09-16 19:59:53 +0800 | [diff] [blame] | 405 | if (is_imx1_fb(fbi)) |
Sascha Hauer | 343684f | 2009-03-19 08:25:41 +0100 | [diff] [blame] | 406 | pcr |= PCR_BPIX_12; |
| 407 | else |
| 408 | pcr |= PCR_BPIX_16; |
| 409 | |
| 410 | if (imxfb_mode->pcr & PCR_TFT) |
Sascha Hauer | 80eee6b | 2008-12-16 11:44:09 +0100 | [diff] [blame] | 411 | rgb = &def_rgb_16_tft; |
| 412 | else |
| 413 | rgb = &def_rgb_16_stn; |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 414 | break; |
| 415 | case 8: |
Sascha Hauer | 343684f | 2009-03-19 08:25:41 +0100 | [diff] [blame] | 416 | pcr |= PCR_BPIX_8; |
Sascha Hauer | 80eee6b | 2008-12-16 11:44:09 +0100 | [diff] [blame] | 417 | rgb = &def_rgb_8; |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 418 | break; |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 419 | } |
| 420 | |
Sascha Hauer | 343684f | 2009-03-19 08:25:41 +0100 | [diff] [blame] | 421 | /* add sync polarities */ |
| 422 | pcr |= imxfb_mode->pcr & ~(0x3f | (7 << 25)); |
| 423 | |
| 424 | fbi->pcr = pcr; |
| 425 | |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 426 | /* |
| 427 | * Copy the RGB parameters for this display |
| 428 | * from the machine specific parameters. |
| 429 | */ |
Sascha Hauer | 80eee6b | 2008-12-16 11:44:09 +0100 | [diff] [blame] | 430 | var->red = rgb->red; |
| 431 | var->green = rgb->green; |
| 432 | var->blue = rgb->blue; |
| 433 | var->transp = rgb->transp; |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 434 | |
| 435 | pr_debug("RGBT length = %d:%d:%d:%d\n", |
| 436 | var->red.length, var->green.length, var->blue.length, |
| 437 | var->transp.length); |
| 438 | |
| 439 | pr_debug("RGBT offset = %d:%d:%d:%d\n", |
| 440 | var->red.offset, var->green.offset, var->blue.offset, |
| 441 | var->transp.offset); |
| 442 | |
| 443 | return 0; |
| 444 | } |
| 445 | |
| 446 | /* |
| 447 | * imxfb_set_par(): |
| 448 | * Set the user defined part of the display for the specified console |
| 449 | */ |
| 450 | static int imxfb_set_par(struct fb_info *info) |
| 451 | { |
| 452 | struct imxfb_info *fbi = info->par; |
| 453 | struct fb_var_screeninfo *var = &info->var; |
| 454 | |
Sascha Hauer | 1512222 | 2009-01-26 17:31:02 +0100 | [diff] [blame] | 455 | if (var->bits_per_pixel == 16 || var->bits_per_pixel == 32) |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 456 | info->fix.visual = FB_VISUAL_TRUECOLOR; |
| 457 | else if (!fbi->cmap_static) |
| 458 | info->fix.visual = FB_VISUAL_PSEUDOCOLOR; |
| 459 | else { |
| 460 | /* |
| 461 | * Some people have weird ideas about wanting static |
| 462 | * pseudocolor maps. I suspect their user space |
| 463 | * applications are broken. |
| 464 | */ |
| 465 | info->fix.visual = FB_VISUAL_STATIC_PSEUDOCOLOR; |
| 466 | } |
| 467 | |
Sascha Hauer | 66c8719 | 2008-12-16 11:44:08 +0100 | [diff] [blame] | 468 | info->fix.line_length = var->xres_virtual * var->bits_per_pixel / 8; |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 469 | fbi->palette_size = var->bits_per_pixel == 8 ? 256 : 16; |
| 470 | |
| 471 | imxfb_activate_var(var, info); |
| 472 | |
| 473 | return 0; |
| 474 | } |
| 475 | |
| 476 | static void imxfb_enable_controller(struct imxfb_info *fbi) |
| 477 | { |
Fabio Estevam | e6b267c | 2013-01-16 10:58:41 -0200 | [diff] [blame] | 478 | |
| 479 | if (fbi->enabled) |
| 480 | return; |
| 481 | |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 482 | pr_debug("Enabling LCD controller\n"); |
| 483 | |
Alexander Shiyan | b7d2d37 | 2014-02-15 09:56:23 +0400 | [diff] [blame] | 484 | writel(fbi->map_dma, fbi->regs + LCDC_SSA); |
Juergen Beisert | 72330b0 | 2008-12-16 11:44:07 +0100 | [diff] [blame] | 485 | |
Juergen Beisert | 72330b0 | 2008-12-16 11:44:07 +0100 | [diff] [blame] | 486 | /* panning offset 0 (0 pixel offset) */ |
| 487 | writel(0x00000000, fbi->regs + LCDC_POS); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 488 | |
| 489 | /* disable hardware cursor */ |
Juergen Beisert | 72330b0 | 2008-12-16 11:44:07 +0100 | [diff] [blame] | 490 | writel(readl(fbi->regs + LCDC_CPOS) & ~(CPOS_CC0 | CPOS_CC1), |
| 491 | fbi->regs + LCDC_CPOS); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 492 | |
Sascha Hauer | f142b61 | 2011-03-03 15:12:44 +0100 | [diff] [blame] | 493 | /* |
| 494 | * RMCR_LCDC_EN_MX1 is present on i.MX1 only, but doesn't hurt |
| 495 | * on other SoCs |
| 496 | */ |
| 497 | writel(RMCR_LCDC_EN_MX1, fbi->regs + LCDC_RMCR); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 498 | |
Sascha Hauer | 13aaea0 | 2012-03-07 09:30:36 +0100 | [diff] [blame] | 499 | clk_prepare_enable(fbi->clk_ipg); |
| 500 | clk_prepare_enable(fbi->clk_ahb); |
| 501 | clk_prepare_enable(fbi->clk_per); |
Fabio Estevam | e6b267c | 2013-01-16 10:58:41 -0200 | [diff] [blame] | 502 | fbi->enabled = true; |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 503 | } |
| 504 | |
| 505 | static void imxfb_disable_controller(struct imxfb_info *fbi) |
| 506 | { |
Fabio Estevam | e6b267c | 2013-01-16 10:58:41 -0200 | [diff] [blame] | 507 | if (!fbi->enabled) |
| 508 | return; |
| 509 | |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 510 | pr_debug("Disabling LCD controller\n"); |
| 511 | |
Sascha Hauer | 13aaea0 | 2012-03-07 09:30:36 +0100 | [diff] [blame] | 512 | clk_disable_unprepare(fbi->clk_per); |
| 513 | clk_disable_unprepare(fbi->clk_ipg); |
| 514 | clk_disable_unprepare(fbi->clk_ahb); |
Fabio Estevam | e6b267c | 2013-01-16 10:58:41 -0200 | [diff] [blame] | 515 | fbi->enabled = false; |
Sascha Hauer | f909ef6 | 2009-01-15 15:21:00 +0100 | [diff] [blame] | 516 | |
Juergen Beisert | 72330b0 | 2008-12-16 11:44:07 +0100 | [diff] [blame] | 517 | writel(0, fbi->regs + LCDC_RMCR); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 518 | } |
| 519 | |
| 520 | static int imxfb_blank(int blank, struct fb_info *info) |
| 521 | { |
| 522 | struct imxfb_info *fbi = info->par; |
| 523 | |
| 524 | pr_debug("imxfb_blank: blank=%d\n", blank); |
| 525 | |
| 526 | switch (blank) { |
| 527 | case FB_BLANK_POWERDOWN: |
| 528 | case FB_BLANK_VSYNC_SUSPEND: |
| 529 | case FB_BLANK_HSYNC_SUSPEND: |
| 530 | case FB_BLANK_NORMAL: |
| 531 | imxfb_disable_controller(fbi); |
| 532 | break; |
| 533 | |
| 534 | case FB_BLANK_UNBLANK: |
| 535 | imxfb_enable_controller(fbi); |
| 536 | break; |
| 537 | } |
| 538 | return 0; |
| 539 | } |
| 540 | |
| 541 | static struct fb_ops imxfb_ops = { |
| 542 | .owner = THIS_MODULE, |
| 543 | .fb_check_var = imxfb_check_var, |
| 544 | .fb_set_par = imxfb_set_par, |
| 545 | .fb_setcolreg = imxfb_setcolreg, |
| 546 | .fb_fillrect = cfb_fillrect, |
| 547 | .fb_copyarea = cfb_copyarea, |
| 548 | .fb_imageblit = cfb_imageblit, |
| 549 | .fb_blank = imxfb_blank, |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 550 | }; |
| 551 | |
| 552 | /* |
| 553 | * imxfb_activate_var(): |
| 554 | * Configures LCD Controller based on entries in var parameter. Settings are |
| 555 | * only written to the controller if changes were made. |
| 556 | */ |
| 557 | static int imxfb_activate_var(struct fb_var_screeninfo *var, struct fb_info *info) |
| 558 | { |
| 559 | struct imxfb_info *fbi = info->par; |
Shawn Guo | e69dc9a | 2012-09-16 19:59:53 +0800 | [diff] [blame] | 560 | u32 ymax_mask = is_imx1_fb(fbi) ? YMAX_MASK_IMX1 : YMAX_MASK_IMX21; |
Sascha Hauer | f909ef6 | 2009-01-15 15:21:00 +0100 | [diff] [blame] | 561 | |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 562 | pr_debug("var: xres=%d hslen=%d lm=%d rm=%d\n", |
| 563 | var->xres, var->hsync_len, |
| 564 | var->left_margin, var->right_margin); |
| 565 | pr_debug("var: yres=%d vslen=%d um=%d bm=%d\n", |
| 566 | var->yres, var->vsync_len, |
| 567 | var->upper_margin, var->lower_margin); |
| 568 | |
| 569 | #if DEBUG_VAR |
| 570 | if (var->xres < 16 || var->xres > 1024) |
| 571 | printk(KERN_ERR "%s: invalid xres %d\n", |
| 572 | info->fix.id, var->xres); |
| 573 | if (var->hsync_len < 1 || var->hsync_len > 64) |
| 574 | printk(KERN_ERR "%s: invalid hsync_len %d\n", |
| 575 | info->fix.id, var->hsync_len); |
| 576 | if (var->left_margin > 255) |
| 577 | printk(KERN_ERR "%s: invalid left_margin %d\n", |
| 578 | info->fix.id, var->left_margin); |
| 579 | if (var->right_margin > 255) |
| 580 | printk(KERN_ERR "%s: invalid right_margin %d\n", |
| 581 | info->fix.id, var->right_margin); |
Shawn Guo | e69dc9a | 2012-09-16 19:59:53 +0800 | [diff] [blame] | 582 | if (var->yres < 1 || var->yres > ymax_mask) |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 583 | printk(KERN_ERR "%s: invalid yres %d\n", |
| 584 | info->fix.id, var->yres); |
| 585 | if (var->vsync_len > 100) |
| 586 | printk(KERN_ERR "%s: invalid vsync_len %d\n", |
| 587 | info->fix.id, var->vsync_len); |
| 588 | if (var->upper_margin > 63) |
| 589 | printk(KERN_ERR "%s: invalid upper_margin %d\n", |
| 590 | info->fix.id, var->upper_margin); |
| 591 | if (var->lower_margin > 255) |
| 592 | printk(KERN_ERR "%s: invalid lower_margin %d\n", |
| 593 | info->fix.id, var->lower_margin); |
| 594 | #endif |
| 595 | |
Sascha Hauer | 343684f | 2009-03-19 08:25:41 +0100 | [diff] [blame] | 596 | /* physical screen start address */ |
| 597 | writel(VPW_VPW(var->xres * var->bits_per_pixel / 8 / 4), |
| 598 | fbi->regs + LCDC_VPW); |
| 599 | |
Sascha Hauer | 7e8549b | 2009-02-14 16:29:38 +0100 | [diff] [blame] | 600 | writel(HCR_H_WIDTH(var->hsync_len - 1) | |
| 601 | HCR_H_WAIT_1(var->right_margin - 1) | |
| 602 | HCR_H_WAIT_2(var->left_margin - 3), |
Juergen Beisert | 72330b0 | 2008-12-16 11:44:07 +0100 | [diff] [blame] | 603 | fbi->regs + LCDC_HCR); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 604 | |
Juergen Beisert | 72330b0 | 2008-12-16 11:44:07 +0100 | [diff] [blame] | 605 | writel(VCR_V_WIDTH(var->vsync_len) | |
Sascha Hauer | d6ed575 | 2008-12-16 11:44:08 +0100 | [diff] [blame] | 606 | VCR_V_WAIT_1(var->lower_margin) | |
| 607 | VCR_V_WAIT_2(var->upper_margin), |
Juergen Beisert | 72330b0 | 2008-12-16 11:44:07 +0100 | [diff] [blame] | 608 | fbi->regs + LCDC_VCR); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 609 | |
Shawn Guo | e69dc9a | 2012-09-16 19:59:53 +0800 | [diff] [blame] | 610 | writel(SIZE_XMAX(var->xres) | (var->yres & ymax_mask), |
Juergen Beisert | 72330b0 | 2008-12-16 11:44:07 +0100 | [diff] [blame] | 611 | fbi->regs + LCDC_SIZE); |
Sascha Hauer | f909ef6 | 2009-01-15 15:21:00 +0100 | [diff] [blame] | 612 | |
Sascha Hauer | 343684f | 2009-03-19 08:25:41 +0100 | [diff] [blame] | 613 | writel(fbi->pcr, fbi->regs + LCDC_PCR); |
Markus Pargmann | 1b6c793 | 2013-05-26 12:35:38 +0200 | [diff] [blame] | 614 | if (fbi->pwmr) |
| 615 | writel(fbi->pwmr, fbi->regs + LCDC_PWMR); |
Juergen Beisert | 72330b0 | 2008-12-16 11:44:07 +0100 | [diff] [blame] | 616 | writel(fbi->lscr1, fbi->regs + LCDC_LSCR1); |
Markus Pargmann | 1b6c793 | 2013-05-26 12:35:38 +0200 | [diff] [blame] | 617 | |
| 618 | /* dmacr = 0 is no valid value, as we need DMA control marks. */ |
| 619 | if (fbi->dmacr) |
| 620 | writel(fbi->dmacr, fbi->regs + LCDC_DMACR); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 621 | |
| 622 | return 0; |
| 623 | } |
| 624 | |
Markus Pargmann | 1b6c793 | 2013-05-26 12:35:38 +0200 | [diff] [blame] | 625 | static int imxfb_init_fbinfo(struct platform_device *pdev) |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 626 | { |
Jingoo Han | 1c8034c | 2013-09-17 14:08:58 +0900 | [diff] [blame] | 627 | struct imx_fb_platform_data *pdata = dev_get_platdata(&pdev->dev); |
Juergen Beisert | 72330b0 | 2008-12-16 11:44:07 +0100 | [diff] [blame] | 628 | struct fb_info *info = dev_get_drvdata(&pdev->dev); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 629 | struct imxfb_info *fbi = info->par; |
Markus Pargmann | 1b6c793 | 2013-05-26 12:35:38 +0200 | [diff] [blame] | 630 | struct device_node *np; |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 631 | |
Harvey Harrison | 5ae1217 | 2008-04-28 02:15:47 -0700 | [diff] [blame] | 632 | pr_debug("%s\n",__func__); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 633 | |
Sascha Hauer | 66c8719 | 2008-12-16 11:44:08 +0100 | [diff] [blame] | 634 | info->pseudo_palette = kmalloc(sizeof(u32) * 16, GFP_KERNEL); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 635 | if (!info->pseudo_palette) |
| 636 | return -ENOMEM; |
| 637 | |
| 638 | memset(fbi, 0, sizeof(struct imxfb_info)); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 639 | |
Gwenhael Goavec-Merou | afc1030 | 2013-01-13 16:56:43 +0100 | [diff] [blame] | 640 | fbi->devtype = pdev->id_entry->driver_data; |
| 641 | |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 642 | strlcpy(info->fix.id, IMX_NAME, sizeof(info->fix.id)); |
| 643 | |
Sascha Hauer | 66c8719 | 2008-12-16 11:44:08 +0100 | [diff] [blame] | 644 | info->fix.type = FB_TYPE_PACKED_PIXELS; |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 645 | info->fix.type_aux = 0; |
| 646 | info->fix.xpanstep = 0; |
| 647 | info->fix.ypanstep = 0; |
| 648 | info->fix.ywrapstep = 0; |
Sascha Hauer | 66c8719 | 2008-12-16 11:44:08 +0100 | [diff] [blame] | 649 | info->fix.accel = FB_ACCEL_NONE; |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 650 | |
| 651 | info->var.nonstd = 0; |
| 652 | info->var.activate = FB_ACTIVATE_NOW; |
| 653 | info->var.height = -1; |
| 654 | info->var.width = -1; |
| 655 | info->var.accel_flags = 0; |
Sascha Hauer | 66c8719 | 2008-12-16 11:44:08 +0100 | [diff] [blame] | 656 | info->var.vmode = FB_VMODE_NONINTERLACED; |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 657 | |
| 658 | info->fbops = &imxfb_ops; |
Sascha Hauer | 66c8719 | 2008-12-16 11:44:08 +0100 | [diff] [blame] | 659 | info->flags = FBINFO_FLAG_DEFAULT | |
| 660 | FBINFO_READS_FAST; |
Markus Pargmann | 1b6c793 | 2013-05-26 12:35:38 +0200 | [diff] [blame] | 661 | if (pdata) { |
Markus Pargmann | 1b6c793 | 2013-05-26 12:35:38 +0200 | [diff] [blame] | 662 | fbi->lscr1 = pdata->lscr1; |
| 663 | fbi->dmacr = pdata->dmacr; |
| 664 | fbi->pwmr = pdata->pwmr; |
Markus Pargmann | 1b6c793 | 2013-05-26 12:35:38 +0200 | [diff] [blame] | 665 | } else { |
| 666 | np = pdev->dev.of_node; |
| 667 | info->var.grayscale = of_property_read_bool(np, |
| 668 | "cmap-greyscale"); |
| 669 | fbi->cmap_inverse = of_property_read_bool(np, "cmap-inverse"); |
| 670 | fbi->cmap_static = of_property_read_bool(np, "cmap-static"); |
Sascha Hauer | 343684f | 2009-03-19 08:25:41 +0100 | [diff] [blame] | 671 | |
Markus Pargmann | 1b6c793 | 2013-05-26 12:35:38 +0200 | [diff] [blame] | 672 | fbi->lscr1 = IMXFB_LSCR1_DEFAULT; |
Denis Carikli | cf071d2 | 2014-03-14 11:55:52 +0100 | [diff] [blame] | 673 | |
| 674 | of_property_read_u32(np, "fsl,lpccr", &fbi->pwmr); |
| 675 | |
Markus Pargmann | 1b6c793 | 2013-05-26 12:35:38 +0200 | [diff] [blame] | 676 | of_property_read_u32(np, "fsl,lscr1", &fbi->lscr1); |
| 677 | |
| 678 | of_property_read_u32(np, "fsl,dmacr", &fbi->dmacr); |
Markus Pargmann | 1b6c793 | 2013-05-26 12:35:38 +0200 | [diff] [blame] | 679 | } |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 680 | |
| 681 | return 0; |
| 682 | } |
| 683 | |
Markus Pargmann | 1b6c793 | 2013-05-26 12:35:38 +0200 | [diff] [blame] | 684 | static int imxfb_of_read_mode(struct device *dev, struct device_node *np, |
| 685 | struct imx_fb_videomode *imxfb_mode) |
| 686 | { |
| 687 | int ret; |
| 688 | struct fb_videomode *of_mode = &imxfb_mode->mode; |
| 689 | u32 bpp; |
| 690 | u32 pcr; |
| 691 | |
| 692 | ret = of_property_read_string(np, "model", &of_mode->name); |
| 693 | if (ret) |
| 694 | of_mode->name = NULL; |
| 695 | |
| 696 | ret = of_get_fb_videomode(np, of_mode, OF_USE_NATIVE_MODE); |
| 697 | if (ret) { |
| 698 | dev_err(dev, "Failed to get videomode from DT\n"); |
| 699 | return ret; |
| 700 | } |
| 701 | |
| 702 | ret = of_property_read_u32(np, "bits-per-pixel", &bpp); |
| 703 | ret |= of_property_read_u32(np, "fsl,pcr", &pcr); |
| 704 | |
| 705 | if (ret) { |
| 706 | dev_err(dev, "Failed to read bpp and pcr from DT\n"); |
| 707 | return -EINVAL; |
| 708 | } |
| 709 | |
| 710 | if (bpp < 1 || bpp > 255) { |
| 711 | dev_err(dev, "Bits per pixel have to be between 1 and 255\n"); |
| 712 | return -EINVAL; |
| 713 | } |
| 714 | |
| 715 | imxfb_mode->bpp = bpp; |
| 716 | imxfb_mode->pcr = pcr; |
| 717 | |
| 718 | return 0; |
| 719 | } |
| 720 | |
Alexander Shiyan | 9fe21fd | 2013-12-21 15:08:00 +0400 | [diff] [blame] | 721 | static int imxfb_lcd_check_fb(struct lcd_device *lcddev, struct fb_info *fi) |
| 722 | { |
| 723 | struct imxfb_info *fbi = dev_get_drvdata(&lcddev->dev); |
| 724 | |
| 725 | if (!fi || fi->par == fbi) |
| 726 | return 1; |
| 727 | |
| 728 | return 0; |
| 729 | } |
| 730 | |
Alexander Shiyan | f590f99 | 2014-02-15 09:56:25 +0400 | [diff] [blame] | 731 | static int imxfb_lcd_get_contrast(struct lcd_device *lcddev) |
| 732 | { |
| 733 | struct imxfb_info *fbi = dev_get_drvdata(&lcddev->dev); |
| 734 | |
| 735 | return fbi->pwmr & 0xff; |
| 736 | } |
| 737 | |
| 738 | static int imxfb_lcd_set_contrast(struct lcd_device *lcddev, int contrast) |
| 739 | { |
| 740 | struct imxfb_info *fbi = dev_get_drvdata(&lcddev->dev); |
| 741 | |
| 742 | if (fbi->pwmr && fbi->enabled) { |
| 743 | if (contrast > 255) |
| 744 | contrast = 255; |
| 745 | else if (contrast < 0) |
| 746 | contrast = 0; |
| 747 | |
| 748 | fbi->pwmr &= ~0xff; |
| 749 | fbi->pwmr |= contrast; |
| 750 | |
| 751 | writel(fbi->pwmr, fbi->regs + LCDC_PWMR); |
| 752 | } |
| 753 | |
| 754 | return 0; |
| 755 | } |
| 756 | |
Alexander Shiyan | 9fe21fd | 2013-12-21 15:08:00 +0400 | [diff] [blame] | 757 | static int imxfb_lcd_get_power(struct lcd_device *lcddev) |
| 758 | { |
| 759 | struct imxfb_info *fbi = dev_get_drvdata(&lcddev->dev); |
| 760 | |
| 761 | if (!IS_ERR(fbi->lcd_pwr)) |
| 762 | return regulator_is_enabled(fbi->lcd_pwr); |
| 763 | |
| 764 | return 1; |
| 765 | } |
| 766 | |
| 767 | static int imxfb_lcd_set_power(struct lcd_device *lcddev, int power) |
| 768 | { |
| 769 | struct imxfb_info *fbi = dev_get_drvdata(&lcddev->dev); |
| 770 | |
| 771 | if (!IS_ERR(fbi->lcd_pwr)) { |
| 772 | if (power) |
| 773 | return regulator_enable(fbi->lcd_pwr); |
| 774 | else |
| 775 | return regulator_disable(fbi->lcd_pwr); |
| 776 | } |
| 777 | |
| 778 | return 0; |
| 779 | } |
| 780 | |
| 781 | static struct lcd_ops imxfb_lcd_ops = { |
| 782 | .check_fb = imxfb_lcd_check_fb, |
Alexander Shiyan | f590f99 | 2014-02-15 09:56:25 +0400 | [diff] [blame] | 783 | .get_contrast = imxfb_lcd_get_contrast, |
| 784 | .set_contrast = imxfb_lcd_set_contrast, |
Alexander Shiyan | 9fe21fd | 2013-12-21 15:08:00 +0400 | [diff] [blame] | 785 | .get_power = imxfb_lcd_get_power, |
| 786 | .set_power = imxfb_lcd_set_power, |
| 787 | }; |
| 788 | |
Alexander Shiyan | de50136 | 2014-02-15 09:56:24 +0400 | [diff] [blame] | 789 | static int imxfb_setup(void) |
| 790 | { |
| 791 | char *opt, *options = NULL; |
| 792 | |
| 793 | if (fb_get_options("imxfb", &options)) |
| 794 | return -ENODEV; |
| 795 | |
| 796 | if (!options || !*options) |
| 797 | return 0; |
| 798 | |
| 799 | while ((opt = strsep(&options, ",")) != NULL) { |
| 800 | if (!*opt) |
| 801 | continue; |
| 802 | else |
| 803 | fb_mode = opt; |
| 804 | } |
| 805 | |
| 806 | return 0; |
| 807 | } |
| 808 | |
Markus Pargmann | 1b6c793 | 2013-05-26 12:35:38 +0200 | [diff] [blame] | 809 | static int imxfb_probe(struct platform_device *pdev) |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 810 | { |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 811 | struct imxfb_info *fbi; |
Alexander Shiyan | 9fe21fd | 2013-12-21 15:08:00 +0400 | [diff] [blame] | 812 | struct lcd_device *lcd; |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 813 | struct fb_info *info; |
Sascha Hauer | 2788927 | 2008-12-16 11:44:09 +0100 | [diff] [blame] | 814 | struct imx_fb_platform_data *pdata; |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 815 | struct resource *res; |
Markus Pargmann | 1b6c793 | 2013-05-26 12:35:38 +0200 | [diff] [blame] | 816 | struct imx_fb_videomode *m; |
| 817 | const struct of_device_id *of_id; |
Sascha Hauer | 343684f | 2009-03-19 08:25:41 +0100 | [diff] [blame] | 818 | int ret, i; |
Markus Pargmann | 1b6c793 | 2013-05-26 12:35:38 +0200 | [diff] [blame] | 819 | int bytes_per_pixel; |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 820 | |
Sascha Hauer | d6b5150 | 2009-06-29 11:41:09 +0200 | [diff] [blame] | 821 | dev_info(&pdev->dev, "i.MX Framebuffer driver\n"); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 822 | |
Alexander Shiyan | de50136 | 2014-02-15 09:56:24 +0400 | [diff] [blame] | 823 | ret = imxfb_setup(); |
| 824 | if (ret < 0) |
| 825 | return ret; |
| 826 | |
Markus Pargmann | 1b6c793 | 2013-05-26 12:35:38 +0200 | [diff] [blame] | 827 | of_id = of_match_device(imxfb_of_dev_id, &pdev->dev); |
| 828 | if (of_id) |
| 829 | pdev->id_entry = of_id->data; |
| 830 | |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 831 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
Sascha Hauer | 66c8719 | 2008-12-16 11:44:08 +0100 | [diff] [blame] | 832 | if (!res) |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 833 | return -ENODEV; |
| 834 | |
Jingoo Han | 1c8034c | 2013-09-17 14:08:58 +0900 | [diff] [blame] | 835 | pdata = dev_get_platdata(&pdev->dev); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 836 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 837 | info = framebuffer_alloc(sizeof(struct imxfb_info), &pdev->dev); |
Sascha Hauer | 66c8719 | 2008-12-16 11:44:08 +0100 | [diff] [blame] | 838 | if (!info) |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 839 | return -ENOMEM; |
| 840 | |
| 841 | fbi = info->par; |
| 842 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 843 | platform_set_drvdata(pdev, info); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 844 | |
Juergen Beisert | 72330b0 | 2008-12-16 11:44:07 +0100 | [diff] [blame] | 845 | ret = imxfb_init_fbinfo(pdev); |
Sascha Hauer | 66c8719 | 2008-12-16 11:44:08 +0100 | [diff] [blame] | 846 | if (ret < 0) |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 847 | goto failed_init; |
| 848 | |
Markus Pargmann | 1b6c793 | 2013-05-26 12:35:38 +0200 | [diff] [blame] | 849 | if (pdata) { |
| 850 | if (!fb_mode) |
| 851 | fb_mode = pdata->mode[0].mode.name; |
| 852 | |
| 853 | fbi->mode = pdata->mode; |
| 854 | fbi->num_modes = pdata->num_modes; |
| 855 | } else { |
| 856 | struct device_node *display_np; |
| 857 | fb_mode = NULL; |
| 858 | |
| 859 | display_np = of_parse_phandle(pdev->dev.of_node, "display", 0); |
| 860 | if (!display_np) { |
| 861 | dev_err(&pdev->dev, "No display defined in devicetree\n"); |
| 862 | ret = -EINVAL; |
| 863 | goto failed_of_parse; |
| 864 | } |
| 865 | |
| 866 | /* |
| 867 | * imxfb does not support more modes, we choose only the native |
| 868 | * mode. |
| 869 | */ |
| 870 | fbi->num_modes = 1; |
| 871 | |
| 872 | fbi->mode = devm_kzalloc(&pdev->dev, |
| 873 | sizeof(struct imx_fb_videomode), GFP_KERNEL); |
| 874 | if (!fbi->mode) { |
| 875 | ret = -ENOMEM; |
| 876 | goto failed_of_parse; |
| 877 | } |
| 878 | |
| 879 | ret = imxfb_of_read_mode(&pdev->dev, display_np, fbi->mode); |
| 880 | if (ret) |
| 881 | goto failed_of_parse; |
| 882 | } |
| 883 | |
| 884 | /* Calculate maximum bytes used per pixel. In most cases this should |
| 885 | * be the same as m->bpp/8 */ |
| 886 | m = &fbi->mode[0]; |
| 887 | bytes_per_pixel = (m->bpp + 7) / 8; |
| 888 | for (i = 0; i < fbi->num_modes; i++, m++) |
| 889 | info->fix.smem_len = max_t(size_t, info->fix.smem_len, |
| 890 | m->mode.xres * m->mode.yres * bytes_per_pixel); |
| 891 | |
Juergen Beisert | 72330b0 | 2008-12-16 11:44:07 +0100 | [diff] [blame] | 892 | res = request_mem_region(res->start, resource_size(res), |
| 893 | DRIVER_NAME); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 894 | if (!res) { |
| 895 | ret = -EBUSY; |
Juergen Beisert | 72330b0 | 2008-12-16 11:44:07 +0100 | [diff] [blame] | 896 | goto failed_req; |
| 897 | } |
| 898 | |
Sascha Hauer | 13aaea0 | 2012-03-07 09:30:36 +0100 | [diff] [blame] | 899 | fbi->clk_ipg = devm_clk_get(&pdev->dev, "ipg"); |
| 900 | if (IS_ERR(fbi->clk_ipg)) { |
| 901 | ret = PTR_ERR(fbi->clk_ipg); |
| 902 | goto failed_getclock; |
| 903 | } |
| 904 | |
| 905 | fbi->clk_ahb = devm_clk_get(&pdev->dev, "ahb"); |
| 906 | if (IS_ERR(fbi->clk_ahb)) { |
| 907 | ret = PTR_ERR(fbi->clk_ahb); |
| 908 | goto failed_getclock; |
| 909 | } |
| 910 | |
| 911 | fbi->clk_per = devm_clk_get(&pdev->dev, "per"); |
| 912 | if (IS_ERR(fbi->clk_per)) { |
| 913 | ret = PTR_ERR(fbi->clk_per); |
Sascha Hauer | f909ef6 | 2009-01-15 15:21:00 +0100 | [diff] [blame] | 914 | goto failed_getclock; |
| 915 | } |
| 916 | |
Juergen Beisert | 72330b0 | 2008-12-16 11:44:07 +0100 | [diff] [blame] | 917 | fbi->regs = ioremap(res->start, resource_size(res)); |
| 918 | if (fbi->regs == NULL) { |
Sascha Hauer | d6b5150 | 2009-06-29 11:41:09 +0200 | [diff] [blame] | 919 | dev_err(&pdev->dev, "Cannot map frame buffer registers\n"); |
Peter Senna Tschudin | caf0a5c | 2012-09-18 14:07:56 +0200 | [diff] [blame] | 920 | ret = -ENOMEM; |
Juergen Beisert | 72330b0 | 2008-12-16 11:44:07 +0100 | [diff] [blame] | 921 | goto failed_ioremap; |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 922 | } |
| 923 | |
Alexander Shiyan | b7d2d37 | 2014-02-15 09:56:23 +0400 | [diff] [blame] | 924 | fbi->map_size = PAGE_ALIGN(info->fix.smem_len); |
| 925 | info->screen_base = dma_alloc_writecombine(&pdev->dev, fbi->map_size, |
| 926 | &fbi->map_dma, GFP_KERNEL); |
Juergen Beisert | 72330b0 | 2008-12-16 11:44:07 +0100 | [diff] [blame] | 927 | |
Alexander Shiyan | b7d2d37 | 2014-02-15 09:56:23 +0400 | [diff] [blame] | 928 | if (!info->screen_base) { |
| 929 | dev_err(&pdev->dev, "Failed to allocate video RAM: %d\n", ret); |
| 930 | ret = -ENOMEM; |
| 931 | goto failed_map; |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 932 | } |
| 933 | |
Alexander Shiyan | b7d2d37 | 2014-02-15 09:56:23 +0400 | [diff] [blame] | 934 | info->fix.smem_start = fbi->map_dma; |
| 935 | |
Markus Pargmann | 1b6c793 | 2013-05-26 12:35:38 +0200 | [diff] [blame] | 936 | if (pdata && pdata->init) { |
Sascha Hauer | c0b90a3 | 2009-01-15 15:37:22 +0100 | [diff] [blame] | 937 | ret = pdata->init(fbi->pdev); |
| 938 | if (ret) |
| 939 | goto failed_platform_init; |
| 940 | } |
| 941 | |
Sascha Hauer | 343684f | 2009-03-19 08:25:41 +0100 | [diff] [blame] | 942 | |
| 943 | INIT_LIST_HEAD(&info->modelist); |
Markus Pargmann | 1b6c793 | 2013-05-26 12:35:38 +0200 | [diff] [blame] | 944 | for (i = 0; i < fbi->num_modes; i++) |
| 945 | fb_add_videomode(&fbi->mode[i].mode, &info->modelist); |
Sascha Hauer | 343684f | 2009-03-19 08:25:41 +0100 | [diff] [blame] | 946 | |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 947 | /* |
| 948 | * This makes sure that our colour bitfield |
| 949 | * descriptors are correctly initialised. |
| 950 | */ |
| 951 | imxfb_check_var(&info->var, info); |
| 952 | |
Sascha Hauer | 66c8719 | 2008-12-16 11:44:08 +0100 | [diff] [blame] | 953 | ret = fb_alloc_cmap(&info->cmap, 1 << info->var.bits_per_pixel, 0); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 954 | if (ret < 0) |
| 955 | goto failed_cmap; |
| 956 | |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 957 | imxfb_set_par(info); |
| 958 | ret = register_framebuffer(info); |
| 959 | if (ret < 0) { |
Pavel Pisa | f99c892 | 2006-01-07 10:44:32 +0000 | [diff] [blame] | 960 | dev_err(&pdev->dev, "failed to register framebuffer\n"); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 961 | goto failed_register; |
| 962 | } |
| 963 | |
Alexander Shiyan | 9fe21fd | 2013-12-21 15:08:00 +0400 | [diff] [blame] | 964 | fbi->lcd_pwr = devm_regulator_get(&pdev->dev, "lcd"); |
| 965 | if (IS_ERR(fbi->lcd_pwr) && (PTR_ERR(fbi->lcd_pwr) == -EPROBE_DEFER)) { |
| 966 | ret = -EPROBE_DEFER; |
| 967 | goto failed_lcd; |
| 968 | } |
| 969 | |
| 970 | lcd = devm_lcd_device_register(&pdev->dev, "imxfb-lcd", &pdev->dev, fbi, |
| 971 | &imxfb_lcd_ops); |
| 972 | if (IS_ERR(lcd)) { |
| 973 | ret = PTR_ERR(lcd); |
| 974 | goto failed_lcd; |
| 975 | } |
| 976 | |
Alexander Shiyan | f590f99 | 2014-02-15 09:56:25 +0400 | [diff] [blame] | 977 | lcd->props.max_contrast = 0xff; |
| 978 | |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 979 | imxfb_enable_controller(fbi); |
Eric BĂ©nard | 7a2bb23 | 2010-07-16 15:09:07 +0200 | [diff] [blame] | 980 | fbi->pdev = pdev; |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 981 | |
| 982 | return 0; |
| 983 | |
Alexander Shiyan | 9fe21fd | 2013-12-21 15:08:00 +0400 | [diff] [blame] | 984 | failed_lcd: |
| 985 | unregister_framebuffer(info); |
| 986 | |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 987 | failed_register: |
| 988 | fb_dealloc_cmap(&info->cmap); |
| 989 | failed_cmap: |
Markus Pargmann | 1b6c793 | 2013-05-26 12:35:38 +0200 | [diff] [blame] | 990 | if (pdata && pdata->exit) |
Sascha Hauer | c0b90a3 | 2009-01-15 15:37:22 +0100 | [diff] [blame] | 991 | pdata->exit(fbi->pdev); |
| 992 | failed_platform_init: |
Alexander Shiyan | b7d2d37 | 2014-02-15 09:56:23 +0400 | [diff] [blame] | 993 | dma_free_writecombine(&pdev->dev, fbi->map_size, info->screen_base, |
| 994 | fbi->map_dma); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 995 | failed_map: |
Juergen Beisert | 72330b0 | 2008-12-16 11:44:07 +0100 | [diff] [blame] | 996 | iounmap(fbi->regs); |
| 997 | failed_ioremap: |
Julia Lawall | 609d3bb | 2011-06-01 17:10:11 +0000 | [diff] [blame] | 998 | failed_getclock: |
Sascha Hauer | d6b5150 | 2009-06-29 11:41:09 +0200 | [diff] [blame] | 999 | release_mem_region(res->start, resource_size(res)); |
Juergen Beisert | 72330b0 | 2008-12-16 11:44:07 +0100 | [diff] [blame] | 1000 | failed_req: |
Markus Pargmann | 1b6c793 | 2013-05-26 12:35:38 +0200 | [diff] [blame] | 1001 | failed_of_parse: |
Juergen Beisert | 72330b0 | 2008-12-16 11:44:07 +0100 | [diff] [blame] | 1002 | kfree(info->pseudo_palette); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 1003 | failed_init: |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 1004 | framebuffer_release(info); |
| 1005 | return ret; |
| 1006 | } |
| 1007 | |
Greg Kroah-Hartman | 48c68c4 | 2012-12-21 13:07:39 -0800 | [diff] [blame] | 1008 | static int imxfb_remove(struct platform_device *pdev) |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 1009 | { |
Sascha Hauer | c0b90a3 | 2009-01-15 15:37:22 +0100 | [diff] [blame] | 1010 | struct imx_fb_platform_data *pdata; |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1011 | struct fb_info *info = platform_get_drvdata(pdev); |
Sascha Hauer | 772a9e6 | 2005-07-17 20:15:36 +0100 | [diff] [blame] | 1012 | struct imxfb_info *fbi = info->par; |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 1013 | struct resource *res; |
| 1014 | |
| 1015 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1016 | |
Sascha Hauer | 772a9e6 | 2005-07-17 20:15:36 +0100 | [diff] [blame] | 1017 | imxfb_disable_controller(fbi); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 1018 | |
| 1019 | unregister_framebuffer(info); |
| 1020 | |
Jingoo Han | 1c8034c | 2013-09-17 14:08:58 +0900 | [diff] [blame] | 1021 | pdata = dev_get_platdata(&pdev->dev); |
Markus Pargmann | 1b6c793 | 2013-05-26 12:35:38 +0200 | [diff] [blame] | 1022 | if (pdata && pdata->exit) |
Sascha Hauer | c0b90a3 | 2009-01-15 15:37:22 +0100 | [diff] [blame] | 1023 | pdata->exit(fbi->pdev); |
| 1024 | |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 1025 | fb_dealloc_cmap(&info->cmap); |
| 1026 | kfree(info->pseudo_palette); |
| 1027 | framebuffer_release(info); |
| 1028 | |
Alexander Shiyan | b7d2d37 | 2014-02-15 09:56:23 +0400 | [diff] [blame] | 1029 | dma_free_writecombine(&pdev->dev, fbi->map_size, info->screen_base, |
| 1030 | fbi->map_dma); |
| 1031 | |
Juergen Beisert | 72330b0 | 2008-12-16 11:44:07 +0100 | [diff] [blame] | 1032 | iounmap(fbi->regs); |
Sascha Hauer | d6b5150 | 2009-06-29 11:41:09 +0200 | [diff] [blame] | 1033 | release_mem_region(res->start, resource_size(res)); |
Sascha Hauer | f909ef6 | 2009-01-15 15:21:00 +0100 | [diff] [blame] | 1034 | |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 1035 | return 0; |
| 1036 | } |
| 1037 | |
Alexander Shiyan | f1d2ff8 | 2014-02-15 09:56:26 +0400 | [diff] [blame] | 1038 | static int __maybe_unused imxfb_suspend(struct device *dev) |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 1039 | { |
Alexander Shiyan | f1d2ff8 | 2014-02-15 09:56:26 +0400 | [diff] [blame] | 1040 | struct fb_info *info = dev_get_drvdata(dev); |
Sascha Hauer | 772a9e6 | 2005-07-17 20:15:36 +0100 | [diff] [blame] | 1041 | struct imxfb_info *fbi = info->par; |
Alexander Shiyan | f1d2ff8 | 2014-02-15 09:56:26 +0400 | [diff] [blame] | 1042 | |
Sascha Hauer | 772a9e6 | 2005-07-17 20:15:36 +0100 | [diff] [blame] | 1043 | imxfb_disable_controller(fbi); |
Alexander Shiyan | f1d2ff8 | 2014-02-15 09:56:26 +0400 | [diff] [blame] | 1044 | |
| 1045 | return 0; |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 1046 | } |
| 1047 | |
Alexander Shiyan | f1d2ff8 | 2014-02-15 09:56:26 +0400 | [diff] [blame] | 1048 | static int __maybe_unused imxfb_resume(struct device *dev) |
| 1049 | { |
| 1050 | struct fb_info *info = dev_get_drvdata(dev); |
| 1051 | struct imxfb_info *fbi = info->par; |
| 1052 | |
| 1053 | imxfb_enable_controller(fbi); |
| 1054 | |
| 1055 | return 0; |
| 1056 | } |
| 1057 | |
| 1058 | static SIMPLE_DEV_PM_OPS(imxfb_pm_ops, imxfb_suspend, imxfb_resume); |
| 1059 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1060 | static struct platform_driver imxfb_driver = { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1061 | .driver = { |
Juergen Beisert | 72330b0 | 2008-12-16 11:44:07 +0100 | [diff] [blame] | 1062 | .name = DRIVER_NAME, |
Markus Pargmann | 1b6c793 | 2013-05-26 12:35:38 +0200 | [diff] [blame] | 1063 | .of_match_table = imxfb_of_dev_id, |
Alexander Shiyan | f1d2ff8 | 2014-02-15 09:56:26 +0400 | [diff] [blame] | 1064 | .pm = &imxfb_pm_ops, |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1065 | }, |
Alexander Shiyan | f1d2ff8 | 2014-02-15 09:56:26 +0400 | [diff] [blame] | 1066 | .probe = imxfb_probe, |
| 1067 | .remove = imxfb_remove, |
Shawn Guo | e69dc9a | 2012-09-16 19:59:53 +0800 | [diff] [blame] | 1068 | .id_table = imxfb_devtype, |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 1069 | }; |
Alexander Shiyan | de50136 | 2014-02-15 09:56:24 +0400 | [diff] [blame] | 1070 | module_platform_driver(imxfb_driver); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 1071 | |
Fabio Estevam | e3d5fb7 | 2011-01-10 09:47:41 -0200 | [diff] [blame] | 1072 | MODULE_DESCRIPTION("Freescale i.MX framebuffer driver"); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 1073 | MODULE_AUTHOR("Sascha Hauer, Pengutronix"); |
| 1074 | MODULE_LICENSE("GPL"); |