Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 1 | /* |
| 2 | * linux/drivers/video/omap2/dss/dpi.c |
| 3 | * |
| 4 | * Copyright (C) 2009 Nokia Corporation |
| 5 | * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com> |
| 6 | * |
| 7 | * Some code and ideas taken from drivers/video/omap/ driver |
| 8 | * by Imre Deak. |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify it |
| 11 | * under the terms of the GNU General Public License version 2 as published by |
| 12 | * the Free Software Foundation. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, but WITHOUT |
| 15 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 16 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 17 | * more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License along with |
| 20 | * this program. If not, see <http://www.gnu.org/licenses/>. |
| 21 | */ |
| 22 | |
| 23 | #define DSS_SUBSYS_NAME "DPI" |
| 24 | |
| 25 | #include <linux/kernel.h> |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 26 | #include <linux/delay.h> |
Paul Gortmaker | a8a3593 | 2011-07-10 13:20:26 -0400 | [diff] [blame] | 27 | #include <linux/export.h> |
Tomi Valkeinen | 8a2cfea | 2010-02-04 17:03:41 +0200 | [diff] [blame] | 28 | #include <linux/err.h> |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 29 | #include <linux/errno.h> |
Tomi Valkeinen | 8a2cfea | 2010-02-04 17:03:41 +0200 | [diff] [blame] | 30 | #include <linux/platform_device.h> |
| 31 | #include <linux/regulator/consumer.h> |
Tomi Valkeinen | 13b1ba7 | 2012-09-28 10:03:03 +0300 | [diff] [blame] | 32 | #include <linux/string.h> |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 33 | |
Tomi Valkeinen | a0b38cc | 2011-05-11 14:05:07 +0300 | [diff] [blame] | 34 | #include <video/omapdss.h> |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 35 | |
| 36 | #include "dss.h" |
Chandrabhanu Mahapatra | 195e672 | 2012-08-22 11:44:06 +0530 | [diff] [blame] | 37 | #include "dss_features.h" |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 38 | |
| 39 | static struct { |
Tomi Valkeinen | 8a2cfea | 2010-02-04 17:03:41 +0200 | [diff] [blame] | 40 | struct regulator *vdds_dsi_reg; |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 41 | struct platform_device *dsidev; |
Archit Taneja | 5cf9a26 | 2012-06-29 14:19:13 +0530 | [diff] [blame] | 42 | |
Archit Taneja | c8a5e4e | 2012-07-05 12:52:46 +0530 | [diff] [blame] | 43 | struct mutex lock; |
| 44 | |
Archit Taneja | c499144 | 2012-08-08 14:28:54 +0530 | [diff] [blame] | 45 | struct omap_video_timings timings; |
Archit Taneja | 5cf9a26 | 2012-06-29 14:19:13 +0530 | [diff] [blame] | 46 | struct dss_lcd_mgr_config mgr_config; |
Archit Taneja | c6b393d | 2012-07-06 15:30:52 +0530 | [diff] [blame] | 47 | int data_lines; |
Archit Taneja | 81b87f5 | 2012-09-26 16:30:49 +0530 | [diff] [blame] | 48 | |
| 49 | struct omap_dss_output output; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 50 | } dpi; |
| 51 | |
Tomi Valkeinen | 0e8276e | 2012-10-22 16:12:58 +0300 | [diff] [blame] | 52 | static struct platform_device *dpi_get_dsidev(enum omap_channel channel) |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 53 | { |
Tomi Valkeinen | bd0f5cc | 2012-12-13 14:21:30 +0200 | [diff] [blame] | 54 | /* |
| 55 | * XXX we can't currently use DSI PLL for DPI with OMAP3, as the DSI PLL |
| 56 | * would also be used for DISPC fclk. Meaning, when the DPI output is |
| 57 | * disabled, DISPC clock will be disabled, and TV out will stop. |
| 58 | */ |
| 59 | switch (omapdss_get_version()) { |
| 60 | case OMAPDSS_VER_OMAP24xx: |
| 61 | case OMAPDSS_VER_OMAP34xx_ES1: |
| 62 | case OMAPDSS_VER_OMAP34xx_ES3: |
| 63 | case OMAPDSS_VER_OMAP3630: |
| 64 | case OMAPDSS_VER_AM35xx: |
| 65 | return NULL; |
Tomi Valkeinen | bd0f5cc | 2012-12-13 14:21:30 +0200 | [diff] [blame] | 66 | |
Tomi Valkeinen | f8ad984 | 2013-03-11 13:57:38 +0200 | [diff] [blame] | 67 | case OMAPDSS_VER_OMAP4430_ES1: |
| 68 | case OMAPDSS_VER_OMAP4430_ES2: |
| 69 | case OMAPDSS_VER_OMAP4: |
| 70 | switch (channel) { |
| 71 | case OMAP_DSS_CHANNEL_LCD: |
| 72 | return dsi_get_dsidev_from_id(0); |
| 73 | case OMAP_DSS_CHANNEL_LCD2: |
| 74 | return dsi_get_dsidev_from_id(1); |
| 75 | default: |
| 76 | return NULL; |
| 77 | } |
| 78 | |
| 79 | case OMAPDSS_VER_OMAP5: |
| 80 | switch (channel) { |
| 81 | case OMAP_DSS_CHANNEL_LCD: |
| 82 | return dsi_get_dsidev_from_id(0); |
| 83 | case OMAP_DSS_CHANNEL_LCD3: |
| 84 | return dsi_get_dsidev_from_id(1); |
| 85 | default: |
| 86 | return NULL; |
| 87 | } |
| 88 | |
Tomi Valkeinen | 0e8276e | 2012-10-22 16:12:58 +0300 | [diff] [blame] | 89 | default: |
| 90 | return NULL; |
| 91 | } |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 92 | } |
| 93 | |
Tomi Valkeinen | 0e8276e | 2012-10-22 16:12:58 +0300 | [diff] [blame] | 94 | static enum omap_dss_clk_source dpi_get_alt_clk_src(enum omap_channel channel) |
Archit Taneja | 7636b3b | 2011-04-12 13:52:26 +0530 | [diff] [blame] | 95 | { |
Tomi Valkeinen | 0e8276e | 2012-10-22 16:12:58 +0300 | [diff] [blame] | 96 | switch (channel) { |
| 97 | case OMAP_DSS_CHANNEL_LCD: |
| 98 | return OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC; |
| 99 | case OMAP_DSS_CHANNEL_LCD2: |
| 100 | return OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC; |
| 101 | default: |
| 102 | /* this shouldn't happen */ |
| 103 | WARN_ON(1); |
| 104 | return OMAP_DSS_CLK_SRC_FCK; |
| 105 | } |
Archit Taneja | 7636b3b | 2011-04-12 13:52:26 +0530 | [diff] [blame] | 106 | } |
| 107 | |
Tomi Valkeinen | 100c826 | 2013-03-05 17:07:16 +0200 | [diff] [blame] | 108 | struct dpi_clk_calc_ctx { |
| 109 | struct platform_device *dsidev; |
| 110 | |
| 111 | /* inputs */ |
| 112 | |
| 113 | unsigned long pck_min, pck_max; |
| 114 | |
| 115 | /* outputs */ |
| 116 | |
| 117 | struct dsi_clock_info dsi_cinfo; |
| 118 | struct dss_clock_info dss_cinfo; |
| 119 | struct dispc_clock_info dispc_cinfo; |
| 120 | }; |
| 121 | |
| 122 | static bool dpi_calc_dispc_cb(int lckd, int pckd, unsigned long lck, |
| 123 | unsigned long pck, void *data) |
| 124 | { |
| 125 | struct dpi_clk_calc_ctx *ctx = data; |
| 126 | |
| 127 | /* |
| 128 | * Odd dividers give us uneven duty cycle, causing problem when level |
| 129 | * shifted. So skip all odd dividers when the pixel clock is on the |
| 130 | * higher side. |
| 131 | */ |
| 132 | if (ctx->pck_min >= 1000000) { |
| 133 | if (lckd > 1 && lckd % 2 != 0) |
| 134 | return false; |
| 135 | |
| 136 | if (pckd > 1 && pckd % 2 != 0) |
| 137 | return false; |
| 138 | } |
| 139 | |
| 140 | ctx->dispc_cinfo.lck_div = lckd; |
| 141 | ctx->dispc_cinfo.pck_div = pckd; |
| 142 | ctx->dispc_cinfo.lck = lck; |
| 143 | ctx->dispc_cinfo.pck = pck; |
| 144 | |
| 145 | return true; |
| 146 | } |
| 147 | |
| 148 | |
| 149 | static bool dpi_calc_hsdiv_cb(int regm_dispc, unsigned long dispc, |
| 150 | void *data) |
| 151 | { |
| 152 | struct dpi_clk_calc_ctx *ctx = data; |
| 153 | |
| 154 | /* |
| 155 | * Odd dividers give us uneven duty cycle, causing problem when level |
| 156 | * shifted. So skip all odd dividers when the pixel clock is on the |
| 157 | * higher side. |
| 158 | */ |
| 159 | if (regm_dispc > 1 && regm_dispc % 2 != 0 && ctx->pck_min >= 1000000) |
| 160 | return false; |
| 161 | |
| 162 | ctx->dsi_cinfo.regm_dispc = regm_dispc; |
| 163 | ctx->dsi_cinfo.dsi_pll_hsdiv_dispc_clk = dispc; |
| 164 | |
| 165 | return dispc_div_calc(dispc, ctx->pck_min, ctx->pck_max, |
| 166 | dpi_calc_dispc_cb, ctx); |
| 167 | } |
| 168 | |
| 169 | |
| 170 | static bool dpi_calc_pll_cb(int regn, int regm, unsigned long fint, |
| 171 | unsigned long pll, |
| 172 | void *data) |
| 173 | { |
| 174 | struct dpi_clk_calc_ctx *ctx = data; |
| 175 | |
| 176 | ctx->dsi_cinfo.regn = regn; |
| 177 | ctx->dsi_cinfo.regm = regm; |
| 178 | ctx->dsi_cinfo.fint = fint; |
| 179 | ctx->dsi_cinfo.clkin4ddr = pll; |
| 180 | |
| 181 | return dsi_hsdiv_calc(ctx->dsidev, pll, ctx->pck_min, |
| 182 | dpi_calc_hsdiv_cb, ctx); |
| 183 | } |
| 184 | |
| 185 | static bool dpi_calc_dss_cb(int fckd, unsigned long fck, void *data) |
| 186 | { |
| 187 | struct dpi_clk_calc_ctx *ctx = data; |
| 188 | |
| 189 | ctx->dss_cinfo.fck = fck; |
| 190 | ctx->dss_cinfo.fck_div = fckd; |
| 191 | |
| 192 | return dispc_div_calc(fck, ctx->pck_min, ctx->pck_max, |
| 193 | dpi_calc_dispc_cb, ctx); |
| 194 | } |
| 195 | |
| 196 | static bool dpi_dsi_clk_calc(unsigned long pck, struct dpi_clk_calc_ctx *ctx) |
| 197 | { |
| 198 | unsigned long clkin; |
| 199 | unsigned long pll_min, pll_max; |
| 200 | |
| 201 | clkin = dsi_get_pll_clkin(dpi.dsidev); |
| 202 | |
| 203 | memset(ctx, 0, sizeof(*ctx)); |
| 204 | ctx->dsidev = dpi.dsidev; |
| 205 | ctx->pck_min = pck - 1000; |
| 206 | ctx->pck_max = pck + 1000; |
| 207 | ctx->dsi_cinfo.clkin = clkin; |
| 208 | |
| 209 | pll_min = 0; |
| 210 | pll_max = 0; |
| 211 | |
| 212 | return dsi_pll_calc(dpi.dsidev, clkin, |
| 213 | pll_min, pll_max, |
| 214 | dpi_calc_pll_cb, ctx); |
| 215 | } |
| 216 | |
| 217 | static bool dpi_dss_clk_calc(unsigned long pck, struct dpi_clk_calc_ctx *ctx) |
| 218 | { |
| 219 | int i; |
| 220 | |
| 221 | /* |
| 222 | * DSS fck gives us very few possibilities, so finding a good pixel |
| 223 | * clock may not be possible. We try multiple times to find the clock, |
| 224 | * each time widening the pixel clock range we look for, up to |
Tomi Valkeinen | 2c6360f | 2013-04-10 14:54:54 +0300 | [diff] [blame] | 225 | * +/- ~15MHz. |
Tomi Valkeinen | 100c826 | 2013-03-05 17:07:16 +0200 | [diff] [blame] | 226 | */ |
| 227 | |
Tomi Valkeinen | 2c6360f | 2013-04-10 14:54:54 +0300 | [diff] [blame] | 228 | for (i = 0; i < 25; ++i) { |
Tomi Valkeinen | 100c826 | 2013-03-05 17:07:16 +0200 | [diff] [blame] | 229 | bool ok; |
| 230 | |
| 231 | memset(ctx, 0, sizeof(*ctx)); |
| 232 | if (pck > 1000 * i * i * i) |
| 233 | ctx->pck_min = max(pck - 1000 * i * i * i, 0lu); |
| 234 | else |
| 235 | ctx->pck_min = 0; |
| 236 | ctx->pck_max = pck + 1000 * i * i * i; |
| 237 | |
| 238 | ok = dss_div_calc(ctx->pck_min, dpi_calc_dss_cb, ctx); |
| 239 | if (ok) |
| 240 | return ok; |
| 241 | } |
| 242 | |
| 243 | return false; |
| 244 | } |
| 245 | |
| 246 | |
| 247 | |
Tomi Valkeinen | 03a0d1e | 2012-11-27 16:41:16 +0200 | [diff] [blame] | 248 | static int dpi_set_dsi_clk(enum omap_channel channel, |
Sumit Semwal | ff1b2cd | 2010-12-02 11:27:11 +0000 | [diff] [blame] | 249 | unsigned long pck_req, unsigned long *fck, int *lck_div, |
| 250 | int *pck_div) |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 251 | { |
Tomi Valkeinen | 100c826 | 2013-03-05 17:07:16 +0200 | [diff] [blame] | 252 | struct dpi_clk_calc_ctx ctx; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 253 | int r; |
Tomi Valkeinen | 100c826 | 2013-03-05 17:07:16 +0200 | [diff] [blame] | 254 | bool ok; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 255 | |
Tomi Valkeinen | 100c826 | 2013-03-05 17:07:16 +0200 | [diff] [blame] | 256 | ok = dpi_dsi_clk_calc(pck_req, &ctx); |
| 257 | if (!ok) |
| 258 | return -EINVAL; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 259 | |
Tomi Valkeinen | 100c826 | 2013-03-05 17:07:16 +0200 | [diff] [blame] | 260 | r = dsi_pll_set_clock_div(dpi.dsidev, &ctx.dsi_cinfo); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 261 | if (r) |
| 262 | return r; |
| 263 | |
Tomi Valkeinen | 03a0d1e | 2012-11-27 16:41:16 +0200 | [diff] [blame] | 264 | dss_select_lcd_clk_source(channel, |
| 265 | dpi_get_alt_clk_src(channel)); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 266 | |
Tomi Valkeinen | 100c826 | 2013-03-05 17:07:16 +0200 | [diff] [blame] | 267 | dpi.mgr_config.clock_info = ctx.dispc_cinfo; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 268 | |
Tomi Valkeinen | 100c826 | 2013-03-05 17:07:16 +0200 | [diff] [blame] | 269 | *fck = ctx.dsi_cinfo.dsi_pll_hsdiv_dispc_clk; |
| 270 | *lck_div = ctx.dispc_cinfo.lck_div; |
| 271 | *pck_div = ctx.dispc_cinfo.pck_div; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 272 | |
| 273 | return 0; |
| 274 | } |
Archit Taneja | 7636b3b | 2011-04-12 13:52:26 +0530 | [diff] [blame] | 275 | |
Tomi Valkeinen | 03a0d1e | 2012-11-27 16:41:16 +0200 | [diff] [blame] | 276 | static int dpi_set_dispc_clk(unsigned long pck_req, unsigned long *fck, |
| 277 | int *lck_div, int *pck_div) |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 278 | { |
Tomi Valkeinen | 100c826 | 2013-03-05 17:07:16 +0200 | [diff] [blame] | 279 | struct dpi_clk_calc_ctx ctx; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 280 | int r; |
Tomi Valkeinen | 100c826 | 2013-03-05 17:07:16 +0200 | [diff] [blame] | 281 | bool ok; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 282 | |
Tomi Valkeinen | 100c826 | 2013-03-05 17:07:16 +0200 | [diff] [blame] | 283 | ok = dpi_dss_clk_calc(pck_req, &ctx); |
| 284 | if (!ok) |
| 285 | return -EINVAL; |
| 286 | |
| 287 | r = dss_set_clock_div(&ctx.dss_cinfo); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 288 | if (r) |
| 289 | return r; |
| 290 | |
Tomi Valkeinen | 100c826 | 2013-03-05 17:07:16 +0200 | [diff] [blame] | 291 | dpi.mgr_config.clock_info = ctx.dispc_cinfo; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 292 | |
Tomi Valkeinen | 100c826 | 2013-03-05 17:07:16 +0200 | [diff] [blame] | 293 | *fck = ctx.dss_cinfo.fck; |
| 294 | *lck_div = ctx.dispc_cinfo.lck_div; |
| 295 | *pck_div = ctx.dispc_cinfo.pck_div; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 296 | |
| 297 | return 0; |
| 298 | } |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 299 | |
Tomi Valkeinen | 03a0d1e | 2012-11-27 16:41:16 +0200 | [diff] [blame] | 300 | static int dpi_set_mode(struct omap_overlay_manager *mgr) |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 301 | { |
Archit Taneja | c499144 | 2012-08-08 14:28:54 +0530 | [diff] [blame] | 302 | struct omap_video_timings *t = &dpi.timings; |
Archit Taneja | 7636b3b | 2011-04-12 13:52:26 +0530 | [diff] [blame] | 303 | int lck_div = 0, pck_div = 0; |
| 304 | unsigned long fck = 0; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 305 | unsigned long pck; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 306 | int r = 0; |
| 307 | |
Tomi Valkeinen | 8a3db40 | 2012-10-22 16:03:39 +0300 | [diff] [blame] | 308 | if (dpi.dsidev) |
Tomi Valkeinen | 03a0d1e | 2012-11-27 16:41:16 +0200 | [diff] [blame] | 309 | r = dpi_set_dsi_clk(mgr->id, t->pixel_clock * 1000, &fck, |
Archit Taneja | 6d523e7 | 2012-06-21 09:33:55 +0530 | [diff] [blame] | 310 | &lck_div, &pck_div); |
Archit Taneja | 7636b3b | 2011-04-12 13:52:26 +0530 | [diff] [blame] | 311 | else |
Tomi Valkeinen | 03a0d1e | 2012-11-27 16:41:16 +0200 | [diff] [blame] | 312 | r = dpi_set_dispc_clk(t->pixel_clock * 1000, &fck, |
Archit Taneja | 6d523e7 | 2012-06-21 09:33:55 +0530 | [diff] [blame] | 313 | &lck_div, &pck_div); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 314 | if (r) |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 315 | return r; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 316 | |
| 317 | pck = fck / lck_div / pck_div / 1000; |
| 318 | |
| 319 | if (pck != t->pixel_clock) { |
| 320 | DSSWARN("Could not find exact pixel clock. " |
| 321 | "Requested %d kHz, got %lu kHz\n", |
| 322 | t->pixel_clock, pck); |
| 323 | |
| 324 | t->pixel_clock = pck; |
| 325 | } |
| 326 | |
Archit Taneja | 5d512fc | 2012-09-07 17:53:38 +0530 | [diff] [blame] | 327 | dss_mgr_set_timings(mgr, t); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 328 | |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 329 | return 0; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 330 | } |
| 331 | |
Tomi Valkeinen | 03a0d1e | 2012-11-27 16:41:16 +0200 | [diff] [blame] | 332 | static void dpi_config_lcd_manager(struct omap_overlay_manager *mgr) |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 333 | { |
Archit Taneja | 5cf9a26 | 2012-06-29 14:19:13 +0530 | [diff] [blame] | 334 | dpi.mgr_config.io_pad_mode = DSS_IO_PAD_MODE_BYPASS; |
Archit Taneja | 569969d | 2011-08-22 17:41:57 +0530 | [diff] [blame] | 335 | |
Archit Taneja | 5cf9a26 | 2012-06-29 14:19:13 +0530 | [diff] [blame] | 336 | dpi.mgr_config.stallmode = false; |
| 337 | dpi.mgr_config.fifohandcheck = false; |
| 338 | |
Archit Taneja | c6b393d | 2012-07-06 15:30:52 +0530 | [diff] [blame] | 339 | dpi.mgr_config.video_port_width = dpi.data_lines; |
Archit Taneja | 5cf9a26 | 2012-06-29 14:19:13 +0530 | [diff] [blame] | 340 | |
| 341 | dpi.mgr_config.lcden_sig_polarity = 0; |
| 342 | |
Archit Taneja | 5d512fc | 2012-09-07 17:53:38 +0530 | [diff] [blame] | 343 | dss_mgr_set_lcd_config(mgr, &dpi.mgr_config); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 344 | } |
| 345 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 346 | int omapdss_dpi_display_enable(struct omap_dss_device *dssdev) |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 347 | { |
Tomi Valkeinen | 03a0d1e | 2012-11-27 16:41:16 +0200 | [diff] [blame] | 348 | struct omap_dss_output *out = &dpi.output; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 349 | int r; |
| 350 | |
Archit Taneja | c8a5e4e | 2012-07-05 12:52:46 +0530 | [diff] [blame] | 351 | mutex_lock(&dpi.lock); |
| 352 | |
Chandrabhanu Mahapatra | 195e672 | 2012-08-22 11:44:06 +0530 | [diff] [blame] | 353 | if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI) && !dpi.vdds_dsi_reg) { |
Russell King | 4041071 | 2012-02-07 09:44:55 +0000 | [diff] [blame] | 354 | DSSERR("no VDSS_DSI regulator\n"); |
Archit Taneja | c8a5e4e | 2012-07-05 12:52:46 +0530 | [diff] [blame] | 355 | r = -ENODEV; |
| 356 | goto err_no_reg; |
Russell King | 4041071 | 2012-02-07 09:44:55 +0000 | [diff] [blame] | 357 | } |
| 358 | |
Archit Taneja | 5d512fc | 2012-09-07 17:53:38 +0530 | [diff] [blame] | 359 | if (out == NULL || out->manager == NULL) { |
| 360 | DSSERR("failed to enable display: no output/manager\n"); |
Archit Taneja | c8a5e4e | 2012-07-05 12:52:46 +0530 | [diff] [blame] | 361 | r = -ENODEV; |
Archit Taneja | 5d512fc | 2012-09-07 17:53:38 +0530 | [diff] [blame] | 362 | goto err_no_out_mgr; |
Tomi Valkeinen | 05e1d60 | 2011-06-23 16:38:21 +0300 | [diff] [blame] | 363 | } |
| 364 | |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 365 | r = omap_dss_start_device(dssdev); |
| 366 | if (r) { |
| 367 | DSSERR("failed to start device\n"); |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 368 | goto err_start_dev; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 369 | } |
| 370 | |
Chandrabhanu Mahapatra | 195e672 | 2012-08-22 11:44:06 +0530 | [diff] [blame] | 371 | if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI)) { |
Tomi Valkeinen | 8a2cfea | 2010-02-04 17:03:41 +0200 | [diff] [blame] | 372 | r = regulator_enable(dpi.vdds_dsi_reg); |
| 373 | if (r) |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 374 | goto err_reg_enable; |
Tomi Valkeinen | 8a2cfea | 2010-02-04 17:03:41 +0200 | [diff] [blame] | 375 | } |
| 376 | |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 377 | r = dispc_runtime_get(); |
| 378 | if (r) |
| 379 | goto err_get_dispc; |
| 380 | |
Tomi Valkeinen | 03a0d1e | 2012-11-27 16:41:16 +0200 | [diff] [blame] | 381 | r = dss_dpi_select_source(out->manager->id); |
Tomi Valkeinen | de09e45 | 2012-09-21 12:09:54 +0300 | [diff] [blame] | 382 | if (r) |
| 383 | goto err_src_sel; |
| 384 | |
Tomi Valkeinen | 8a3db40 | 2012-10-22 16:03:39 +0300 | [diff] [blame] | 385 | if (dpi.dsidev) { |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 386 | r = dsi_runtime_get(dpi.dsidev); |
| 387 | if (r) |
| 388 | goto err_get_dsi; |
| 389 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 390 | r = dsi_pll_init(dpi.dsidev, 0, 1); |
Archit Taneja | 7636b3b | 2011-04-12 13:52:26 +0530 | [diff] [blame] | 391 | if (r) |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 392 | goto err_dsi_pll_init; |
Archit Taneja | 7636b3b | 2011-04-12 13:52:26 +0530 | [diff] [blame] | 393 | } |
| 394 | |
Tomi Valkeinen | 03a0d1e | 2012-11-27 16:41:16 +0200 | [diff] [blame] | 395 | r = dpi_set_mode(out->manager); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 396 | if (r) |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 397 | goto err_set_mode; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 398 | |
Tomi Valkeinen | 03a0d1e | 2012-11-27 16:41:16 +0200 | [diff] [blame] | 399 | dpi_config_lcd_manager(out->manager); |
Archit Taneja | 5cf9a26 | 2012-06-29 14:19:13 +0530 | [diff] [blame] | 400 | |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 401 | mdelay(2); |
| 402 | |
Archit Taneja | 5d512fc | 2012-09-07 17:53:38 +0530 | [diff] [blame] | 403 | r = dss_mgr_enable(out->manager); |
Tomi Valkeinen | 33ca237 | 2011-11-21 13:42:58 +0200 | [diff] [blame] | 404 | if (r) |
| 405 | goto err_mgr_enable; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 406 | |
Archit Taneja | c8a5e4e | 2012-07-05 12:52:46 +0530 | [diff] [blame] | 407 | mutex_unlock(&dpi.lock); |
| 408 | |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 409 | return 0; |
| 410 | |
Tomi Valkeinen | 33ca237 | 2011-11-21 13:42:58 +0200 | [diff] [blame] | 411 | err_mgr_enable: |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 412 | err_set_mode: |
Tomi Valkeinen | 8a3db40 | 2012-10-22 16:03:39 +0300 | [diff] [blame] | 413 | if (dpi.dsidev) |
Tomi Valkeinen | 19077a7 | 2011-05-18 11:33:44 +0300 | [diff] [blame] | 414 | dsi_pll_uninit(dpi.dsidev, true); |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 415 | err_dsi_pll_init: |
Tomi Valkeinen | 8a3db40 | 2012-10-22 16:03:39 +0300 | [diff] [blame] | 416 | if (dpi.dsidev) |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 417 | dsi_runtime_put(dpi.dsidev); |
| 418 | err_get_dsi: |
Tomi Valkeinen | de09e45 | 2012-09-21 12:09:54 +0300 | [diff] [blame] | 419 | err_src_sel: |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 420 | dispc_runtime_put(); |
| 421 | err_get_dispc: |
Chandrabhanu Mahapatra | 195e672 | 2012-08-22 11:44:06 +0530 | [diff] [blame] | 422 | if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI)) |
Tomi Valkeinen | 8a2cfea | 2010-02-04 17:03:41 +0200 | [diff] [blame] | 423 | regulator_disable(dpi.vdds_dsi_reg); |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 424 | err_reg_enable: |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 425 | omap_dss_stop_device(dssdev); |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 426 | err_start_dev: |
Archit Taneja | 5d512fc | 2012-09-07 17:53:38 +0530 | [diff] [blame] | 427 | err_no_out_mgr: |
Archit Taneja | c8a5e4e | 2012-07-05 12:52:46 +0530 | [diff] [blame] | 428 | err_no_reg: |
| 429 | mutex_unlock(&dpi.lock); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 430 | return r; |
| 431 | } |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 432 | EXPORT_SYMBOL(omapdss_dpi_display_enable); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 433 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 434 | void omapdss_dpi_display_disable(struct omap_dss_device *dssdev) |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 435 | { |
Tomi Valkeinen | 03a0d1e | 2012-11-27 16:41:16 +0200 | [diff] [blame] | 436 | struct omap_overlay_manager *mgr = dpi.output.manager; |
Archit Taneja | 5d512fc | 2012-09-07 17:53:38 +0530 | [diff] [blame] | 437 | |
Archit Taneja | c8a5e4e | 2012-07-05 12:52:46 +0530 | [diff] [blame] | 438 | mutex_lock(&dpi.lock); |
| 439 | |
Archit Taneja | 5d512fc | 2012-09-07 17:53:38 +0530 | [diff] [blame] | 440 | dss_mgr_disable(mgr); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 441 | |
Tomi Valkeinen | 8a3db40 | 2012-10-22 16:03:39 +0300 | [diff] [blame] | 442 | if (dpi.dsidev) { |
Tomi Valkeinen | a5b8399 | 2012-10-22 16:58:36 +0300 | [diff] [blame] | 443 | dss_select_lcd_clk_source(mgr->id, OMAP_DSS_CLK_SRC_FCK); |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 444 | dsi_pll_uninit(dpi.dsidev, true); |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 445 | dsi_runtime_put(dpi.dsidev); |
Archit Taneja | 7636b3b | 2011-04-12 13:52:26 +0530 | [diff] [blame] | 446 | } |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 447 | |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 448 | dispc_runtime_put(); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 449 | |
Chandrabhanu Mahapatra | 195e672 | 2012-08-22 11:44:06 +0530 | [diff] [blame] | 450 | if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI)) |
Tomi Valkeinen | 8a2cfea | 2010-02-04 17:03:41 +0200 | [diff] [blame] | 451 | regulator_disable(dpi.vdds_dsi_reg); |
| 452 | |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 453 | omap_dss_stop_device(dssdev); |
Archit Taneja | c8a5e4e | 2012-07-05 12:52:46 +0530 | [diff] [blame] | 454 | |
| 455 | mutex_unlock(&dpi.lock); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 456 | } |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 457 | EXPORT_SYMBOL(omapdss_dpi_display_disable); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 458 | |
Archit Taneja | c499144 | 2012-08-08 14:28:54 +0530 | [diff] [blame] | 459 | void omapdss_dpi_set_timings(struct omap_dss_device *dssdev, |
| 460 | struct omap_video_timings *timings) |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 461 | { |
| 462 | DSSDBG("dpi_set_timings\n"); |
Archit Taneja | c8a5e4e | 2012-07-05 12:52:46 +0530 | [diff] [blame] | 463 | |
| 464 | mutex_lock(&dpi.lock); |
| 465 | |
Archit Taneja | c499144 | 2012-08-08 14:28:54 +0530 | [diff] [blame] | 466 | dpi.timings = *timings; |
Archit Taneja | c499144 | 2012-08-08 14:28:54 +0530 | [diff] [blame] | 467 | |
Archit Taneja | c8a5e4e | 2012-07-05 12:52:46 +0530 | [diff] [blame] | 468 | mutex_unlock(&dpi.lock); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 469 | } |
Archit Taneja | c499144 | 2012-08-08 14:28:54 +0530 | [diff] [blame] | 470 | EXPORT_SYMBOL(omapdss_dpi_set_timings); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 471 | |
Tomi Valkeinen | 69b2048 | 2010-01-20 12:11:25 +0200 | [diff] [blame] | 472 | int dpi_check_timings(struct omap_dss_device *dssdev, |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 473 | struct omap_video_timings *timings) |
| 474 | { |
Tomi Valkeinen | 03a0d1e | 2012-11-27 16:41:16 +0200 | [diff] [blame] | 475 | struct omap_overlay_manager *mgr = dpi.output.manager; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 476 | int lck_div, pck_div; |
| 477 | unsigned long fck; |
| 478 | unsigned long pck; |
Tomi Valkeinen | 100c826 | 2013-03-05 17:07:16 +0200 | [diff] [blame] | 479 | struct dpi_clk_calc_ctx ctx; |
| 480 | bool ok; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 481 | |
Tomi Valkeinen | 8b09551 | 2012-10-24 13:27:02 +0300 | [diff] [blame] | 482 | if (mgr && !dispc_mgr_timings_ok(mgr->id, timings)) |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 483 | return -EINVAL; |
| 484 | |
| 485 | if (timings->pixel_clock == 0) |
| 486 | return -EINVAL; |
| 487 | |
Tomi Valkeinen | 8a3db40 | 2012-10-22 16:03:39 +0300 | [diff] [blame] | 488 | if (dpi.dsidev) { |
Tomi Valkeinen | 100c826 | 2013-03-05 17:07:16 +0200 | [diff] [blame] | 489 | ok = dpi_dsi_clk_calc(timings->pixel_clock * 1000, &ctx); |
| 490 | if (!ok) |
| 491 | return -EINVAL; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 492 | |
Tomi Valkeinen | 100c826 | 2013-03-05 17:07:16 +0200 | [diff] [blame] | 493 | fck = ctx.dsi_cinfo.dsi_pll_hsdiv_dispc_clk; |
Archit Taneja | 7636b3b | 2011-04-12 13:52:26 +0530 | [diff] [blame] | 494 | } else { |
Tomi Valkeinen | 100c826 | 2013-03-05 17:07:16 +0200 | [diff] [blame] | 495 | ok = dpi_dss_clk_calc(timings->pixel_clock * 1000, &ctx); |
| 496 | if (!ok) |
| 497 | return -EINVAL; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 498 | |
Tomi Valkeinen | 100c826 | 2013-03-05 17:07:16 +0200 | [diff] [blame] | 499 | fck = ctx.dss_cinfo.fck; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 500 | } |
Archit Taneja | 7636b3b | 2011-04-12 13:52:26 +0530 | [diff] [blame] | 501 | |
Tomi Valkeinen | 100c826 | 2013-03-05 17:07:16 +0200 | [diff] [blame] | 502 | lck_div = ctx.dispc_cinfo.lck_div; |
| 503 | pck_div = ctx.dispc_cinfo.pck_div; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 504 | |
| 505 | pck = fck / lck_div / pck_div / 1000; |
| 506 | |
| 507 | timings->pixel_clock = pck; |
| 508 | |
| 509 | return 0; |
| 510 | } |
Tomi Valkeinen | 69b2048 | 2010-01-20 12:11:25 +0200 | [diff] [blame] | 511 | EXPORT_SYMBOL(dpi_check_timings); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 512 | |
Archit Taneja | c6b393d | 2012-07-06 15:30:52 +0530 | [diff] [blame] | 513 | void omapdss_dpi_set_data_lines(struct omap_dss_device *dssdev, int data_lines) |
| 514 | { |
| 515 | mutex_lock(&dpi.lock); |
| 516 | |
| 517 | dpi.data_lines = data_lines; |
| 518 | |
| 519 | mutex_unlock(&dpi.lock); |
| 520 | } |
| 521 | EXPORT_SYMBOL(omapdss_dpi_set_data_lines); |
| 522 | |
Tomi Valkeinen | 94cf394 | 2013-04-26 14:27:44 +0300 | [diff] [blame^] | 523 | static int dpi_verify_dsi_pll(struct platform_device *dsidev) |
Tomi Valkeinen | 6061675 | 2012-10-30 12:57:43 +0200 | [diff] [blame] | 524 | { |
| 525 | int r; |
| 526 | |
| 527 | /* do initial setup with the PLL to see if it is operational */ |
| 528 | |
| 529 | r = dsi_runtime_get(dsidev); |
| 530 | if (r) |
| 531 | return r; |
| 532 | |
| 533 | r = dsi_pll_init(dsidev, 0, 1); |
| 534 | if (r) { |
| 535 | dsi_runtime_put(dsidev); |
| 536 | return r; |
| 537 | } |
| 538 | |
| 539 | dsi_pll_uninit(dsidev, true); |
| 540 | dsi_runtime_put(dsidev); |
| 541 | |
| 542 | return 0; |
| 543 | } |
| 544 | |
Tomi Valkeinen | 2eea5ae | 2013-02-13 11:23:54 +0200 | [diff] [blame] | 545 | /* |
| 546 | * Return a hardcoded channel for the DPI output. This should work for |
| 547 | * current use cases, but this can be later expanded to either resolve |
| 548 | * the channel in some more dynamic manner, or get the channel as a user |
| 549 | * parameter. |
| 550 | */ |
| 551 | static enum omap_channel dpi_get_channel(void) |
| 552 | { |
| 553 | switch (omapdss_get_version()) { |
| 554 | case OMAPDSS_VER_OMAP24xx: |
| 555 | case OMAPDSS_VER_OMAP34xx_ES1: |
| 556 | case OMAPDSS_VER_OMAP34xx_ES3: |
| 557 | case OMAPDSS_VER_OMAP3630: |
| 558 | case OMAPDSS_VER_AM35xx: |
| 559 | return OMAP_DSS_CHANNEL_LCD; |
| 560 | |
| 561 | case OMAPDSS_VER_OMAP4430_ES1: |
| 562 | case OMAPDSS_VER_OMAP4430_ES2: |
| 563 | case OMAPDSS_VER_OMAP4: |
| 564 | return OMAP_DSS_CHANNEL_LCD2; |
| 565 | |
| 566 | case OMAPDSS_VER_OMAP5: |
| 567 | return OMAP_DSS_CHANNEL_LCD3; |
| 568 | |
| 569 | default: |
| 570 | DSSWARN("unsupported DSS version\n"); |
| 571 | return OMAP_DSS_CHANNEL_LCD; |
| 572 | } |
| 573 | } |
| 574 | |
Tomi Valkeinen | 94cf394 | 2013-04-26 14:27:44 +0300 | [diff] [blame^] | 575 | static int dpi_init_display(struct omap_dss_device *dssdev) |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 576 | { |
Tomi Valkeinen | 0e8276e | 2012-10-22 16:12:58 +0300 | [diff] [blame] | 577 | struct platform_device *dsidev; |
| 578 | |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 579 | DSSDBG("init_display\n"); |
| 580 | |
Chandrabhanu Mahapatra | 195e672 | 2012-08-22 11:44:06 +0530 | [diff] [blame] | 581 | if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI) && |
| 582 | dpi.vdds_dsi_reg == NULL) { |
Tomi Valkeinen | 5f42f2c | 2011-02-22 15:53:46 +0200 | [diff] [blame] | 583 | struct regulator *vdds_dsi; |
| 584 | |
| 585 | vdds_dsi = dss_get_vdds_dsi(); |
| 586 | |
| 587 | if (IS_ERR(vdds_dsi)) { |
| 588 | DSSERR("can't get VDDS_DSI regulator\n"); |
| 589 | return PTR_ERR(vdds_dsi); |
| 590 | } |
| 591 | |
| 592 | dpi.vdds_dsi_reg = vdds_dsi; |
| 593 | } |
| 594 | |
Tomi Valkeinen | 2eea5ae | 2013-02-13 11:23:54 +0200 | [diff] [blame] | 595 | dsidev = dpi_get_dsidev(dpi.output.dispc_channel); |
Tomi Valkeinen | 6061675 | 2012-10-30 12:57:43 +0200 | [diff] [blame] | 596 | |
Tomi Valkeinen | 1de8e12 | 2012-11-12 16:52:11 +0200 | [diff] [blame] | 597 | if (dsidev && dpi_verify_dsi_pll(dsidev)) { |
Tomi Valkeinen | 0e8276e | 2012-10-22 16:12:58 +0300 | [diff] [blame] | 598 | dsidev = NULL; |
| 599 | DSSWARN("DSI PLL not operational\n"); |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 600 | } |
| 601 | |
Tomi Valkeinen | 0e8276e | 2012-10-22 16:12:58 +0300 | [diff] [blame] | 602 | if (dsidev) |
| 603 | DSSDBG("using DSI PLL for DPI clock\n"); |
| 604 | |
| 605 | dpi.dsidev = dsidev; |
| 606 | |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 607 | return 0; |
| 608 | } |
| 609 | |
Tomi Valkeinen | 94cf394 | 2013-04-26 14:27:44 +0300 | [diff] [blame^] | 610 | static struct omap_dss_device *dpi_find_dssdev(struct platform_device *pdev) |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 611 | { |
Tomi Valkeinen | 35deca3 | 2012-03-01 15:45:53 +0200 | [diff] [blame] | 612 | struct omap_dss_board_info *pdata = pdev->dev.platform_data; |
Tomi Valkeinen | 2bbcce5 | 2012-10-29 12:40:46 +0200 | [diff] [blame] | 613 | const char *def_disp_name = omapdss_get_default_display_name(); |
Tomi Valkeinen | 1521653 | 2012-09-06 14:29:31 +0300 | [diff] [blame] | 614 | struct omap_dss_device *def_dssdev; |
| 615 | int i; |
| 616 | |
| 617 | def_dssdev = NULL; |
Tomi Valkeinen | 35deca3 | 2012-03-01 15:45:53 +0200 | [diff] [blame] | 618 | |
| 619 | for (i = 0; i < pdata->num_devices; ++i) { |
| 620 | struct omap_dss_device *dssdev = pdata->devices[i]; |
| 621 | |
| 622 | if (dssdev->type != OMAP_DISPLAY_TYPE_DPI) |
| 623 | continue; |
| 624 | |
Tomi Valkeinen | 1521653 | 2012-09-06 14:29:31 +0300 | [diff] [blame] | 625 | if (def_dssdev == NULL) |
| 626 | def_dssdev = dssdev; |
Tomi Valkeinen | 9d8232a | 2012-03-01 16:58:39 +0200 | [diff] [blame] | 627 | |
Tomi Valkeinen | 1521653 | 2012-09-06 14:29:31 +0300 | [diff] [blame] | 628 | if (def_disp_name != NULL && |
| 629 | strcmp(dssdev->name, def_disp_name) == 0) { |
| 630 | def_dssdev = dssdev; |
| 631 | break; |
| 632 | } |
| 633 | } |
| 634 | |
| 635 | return def_dssdev; |
| 636 | } |
| 637 | |
Tomi Valkeinen | 94cf394 | 2013-04-26 14:27:44 +0300 | [diff] [blame^] | 638 | static void dpi_probe_pdata(struct platform_device *dpidev) |
Tomi Valkeinen | 1521653 | 2012-09-06 14:29:31 +0300 | [diff] [blame] | 639 | { |
Tomi Valkeinen | 5274484 | 2012-09-10 13:58:29 +0300 | [diff] [blame] | 640 | struct omap_dss_device *plat_dssdev; |
Tomi Valkeinen | 1521653 | 2012-09-06 14:29:31 +0300 | [diff] [blame] | 641 | struct omap_dss_device *dssdev; |
| 642 | int r; |
| 643 | |
Tomi Valkeinen | 5274484 | 2012-09-10 13:58:29 +0300 | [diff] [blame] | 644 | plat_dssdev = dpi_find_dssdev(dpidev); |
Tomi Valkeinen | 1521653 | 2012-09-06 14:29:31 +0300 | [diff] [blame] | 645 | |
Tomi Valkeinen | 5274484 | 2012-09-10 13:58:29 +0300 | [diff] [blame] | 646 | if (!plat_dssdev) |
| 647 | return; |
| 648 | |
| 649 | dssdev = dss_alloc_and_init_device(&dpidev->dev); |
Tomi Valkeinen | 1521653 | 2012-09-06 14:29:31 +0300 | [diff] [blame] | 650 | if (!dssdev) |
| 651 | return; |
| 652 | |
Tomi Valkeinen | 5274484 | 2012-09-10 13:58:29 +0300 | [diff] [blame] | 653 | dss_copy_device_pdata(dssdev, plat_dssdev); |
| 654 | |
Tomi Valkeinen | 1521653 | 2012-09-06 14:29:31 +0300 | [diff] [blame] | 655 | r = dpi_init_display(dssdev); |
| 656 | if (r) { |
| 657 | DSSERR("device %s init failed: %d\n", dssdev->name, r); |
Tomi Valkeinen | 5274484 | 2012-09-10 13:58:29 +0300 | [diff] [blame] | 658 | dss_put_device(dssdev); |
Tomi Valkeinen | 1521653 | 2012-09-06 14:29:31 +0300 | [diff] [blame] | 659 | return; |
| 660 | } |
| 661 | |
Tomi Valkeinen | 486c0e1 | 2012-12-07 12:50:08 +0200 | [diff] [blame] | 662 | r = omapdss_output_set_device(&dpi.output, dssdev); |
| 663 | if (r) { |
| 664 | DSSERR("failed to connect output to new device: %s\n", |
| 665 | dssdev->name); |
| 666 | dss_put_device(dssdev); |
| 667 | return; |
| 668 | } |
| 669 | |
Tomi Valkeinen | 5274484 | 2012-09-10 13:58:29 +0300 | [diff] [blame] | 670 | r = dss_add_device(dssdev); |
Tomi Valkeinen | 1521653 | 2012-09-06 14:29:31 +0300 | [diff] [blame] | 671 | if (r) { |
| 672 | DSSERR("device %s register failed: %d\n", dssdev->name, r); |
Tomi Valkeinen | 486c0e1 | 2012-12-07 12:50:08 +0200 | [diff] [blame] | 673 | omapdss_output_unset_device(&dpi.output); |
Tomi Valkeinen | 5274484 | 2012-09-10 13:58:29 +0300 | [diff] [blame] | 674 | dss_put_device(dssdev); |
Tomi Valkeinen | 1521653 | 2012-09-06 14:29:31 +0300 | [diff] [blame] | 675 | return; |
Tomi Valkeinen | 35deca3 | 2012-03-01 15:45:53 +0200 | [diff] [blame] | 676 | } |
Tomi Valkeinen | 38f3daf | 2012-05-02 14:55:12 +0300 | [diff] [blame] | 677 | } |
| 678 | |
Tomi Valkeinen | 94cf394 | 2013-04-26 14:27:44 +0300 | [diff] [blame^] | 679 | static void dpi_init_output(struct platform_device *pdev) |
Archit Taneja | 81b87f5 | 2012-09-26 16:30:49 +0530 | [diff] [blame] | 680 | { |
| 681 | struct omap_dss_output *out = &dpi.output; |
| 682 | |
| 683 | out->pdev = pdev; |
| 684 | out->id = OMAP_DSS_OUTPUT_DPI; |
| 685 | out->type = OMAP_DISPLAY_TYPE_DPI; |
Tomi Valkeinen | 7286a08 | 2013-02-18 13:06:01 +0200 | [diff] [blame] | 686 | out->name = "dpi.0"; |
Tomi Valkeinen | 2eea5ae | 2013-02-13 11:23:54 +0200 | [diff] [blame] | 687 | out->dispc_channel = dpi_get_channel(); |
Archit Taneja | 81b87f5 | 2012-09-26 16:30:49 +0530 | [diff] [blame] | 688 | |
| 689 | dss_register_output(out); |
| 690 | } |
| 691 | |
| 692 | static void __exit dpi_uninit_output(struct platform_device *pdev) |
| 693 | { |
| 694 | struct omap_dss_output *out = &dpi.output; |
| 695 | |
| 696 | dss_unregister_output(out); |
| 697 | } |
| 698 | |
Tomi Valkeinen | 94cf394 | 2013-04-26 14:27:44 +0300 | [diff] [blame^] | 699 | static int omap_dpi_probe(struct platform_device *pdev) |
Tomi Valkeinen | 38f3daf | 2012-05-02 14:55:12 +0300 | [diff] [blame] | 700 | { |
Archit Taneja | c8a5e4e | 2012-07-05 12:52:46 +0530 | [diff] [blame] | 701 | mutex_init(&dpi.lock); |
| 702 | |
Archit Taneja | 81b87f5 | 2012-09-26 16:30:49 +0530 | [diff] [blame] | 703 | dpi_init_output(pdev); |
| 704 | |
Tomi Valkeinen | 38f3daf | 2012-05-02 14:55:12 +0300 | [diff] [blame] | 705 | dpi_probe_pdata(pdev); |
Tomi Valkeinen | 35deca3 | 2012-03-01 15:45:53 +0200 | [diff] [blame] | 706 | |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 707 | return 0; |
| 708 | } |
| 709 | |
Tomi Valkeinen | 6e7e8f0 | 2012-02-17 17:41:13 +0200 | [diff] [blame] | 710 | static int __exit omap_dpi_remove(struct platform_device *pdev) |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 711 | { |
Tomi Valkeinen | 5274484 | 2012-09-10 13:58:29 +0300 | [diff] [blame] | 712 | dss_unregister_child_devices(&pdev->dev); |
Tomi Valkeinen | 35deca3 | 2012-03-01 15:45:53 +0200 | [diff] [blame] | 713 | |
Archit Taneja | 81b87f5 | 2012-09-26 16:30:49 +0530 | [diff] [blame] | 714 | dpi_uninit_output(pdev); |
| 715 | |
Tomi Valkeinen | a57dd4f | 2012-02-20 16:57:37 +0200 | [diff] [blame] | 716 | return 0; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 717 | } |
| 718 | |
Tomi Valkeinen | a57dd4f | 2012-02-20 16:57:37 +0200 | [diff] [blame] | 719 | static struct platform_driver omap_dpi_driver = { |
Tomi Valkeinen | 94cf394 | 2013-04-26 14:27:44 +0300 | [diff] [blame^] | 720 | .probe = omap_dpi_probe, |
Tomi Valkeinen | 6e7e8f0 | 2012-02-17 17:41:13 +0200 | [diff] [blame] | 721 | .remove = __exit_p(omap_dpi_remove), |
Tomi Valkeinen | a57dd4f | 2012-02-20 16:57:37 +0200 | [diff] [blame] | 722 | .driver = { |
| 723 | .name = "omapdss_dpi", |
| 724 | .owner = THIS_MODULE, |
| 725 | }, |
| 726 | }; |
| 727 | |
Tomi Valkeinen | 6e7e8f0 | 2012-02-17 17:41:13 +0200 | [diff] [blame] | 728 | int __init dpi_init_platform_driver(void) |
Tomi Valkeinen | a57dd4f | 2012-02-20 16:57:37 +0200 | [diff] [blame] | 729 | { |
Tomi Valkeinen | 94cf394 | 2013-04-26 14:27:44 +0300 | [diff] [blame^] | 730 | return platform_driver_register(&omap_dpi_driver); |
Tomi Valkeinen | a57dd4f | 2012-02-20 16:57:37 +0200 | [diff] [blame] | 731 | } |
| 732 | |
Tomi Valkeinen | 6e7e8f0 | 2012-02-17 17:41:13 +0200 | [diff] [blame] | 733 | void __exit dpi_uninit_platform_driver(void) |
Tomi Valkeinen | a57dd4f | 2012-02-20 16:57:37 +0200 | [diff] [blame] | 734 | { |
| 735 | platform_driver_unregister(&omap_dpi_driver); |
| 736 | } |