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 | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 32 | |
Tomi Valkeinen | a0b38cc | 2011-05-11 14:05:07 +0300 | [diff] [blame] | 33 | #include <video/omapdss.h> |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 34 | |
| 35 | #include "dss.h" |
Chandrabhanu Mahapatra | 195e672 | 2012-08-22 11:44:06 +0530 | [diff] [blame] | 36 | #include "dss_features.h" |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 37 | |
| 38 | static struct { |
Tomi Valkeinen | 8a2cfea | 2010-02-04 17:03:41 +0200 | [diff] [blame] | 39 | struct regulator *vdds_dsi_reg; |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 40 | struct platform_device *dsidev; |
Archit Taneja | 5cf9a26 | 2012-06-29 14:19:13 +0530 | [diff] [blame] | 41 | |
Archit Taneja | c8a5e4e | 2012-07-05 12:52:46 +0530 | [diff] [blame] | 42 | struct mutex lock; |
| 43 | |
Archit Taneja | c499144 | 2012-08-08 14:28:54 +0530 | [diff] [blame] | 44 | struct omap_video_timings timings; |
Archit Taneja | 5cf9a26 | 2012-06-29 14:19:13 +0530 | [diff] [blame] | 45 | struct dss_lcd_mgr_config mgr_config; |
Archit Taneja | c6b393d | 2012-07-06 15:30:52 +0530 | [diff] [blame] | 46 | int data_lines; |
Archit Taneja | 81b87f5 | 2012-09-26 16:30:49 +0530 | [diff] [blame] | 47 | |
| 48 | struct omap_dss_output output; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 49 | } dpi; |
| 50 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 51 | static struct platform_device *dpi_get_dsidev(enum omap_dss_clk_source clk) |
| 52 | { |
| 53 | int dsi_module; |
| 54 | |
| 55 | dsi_module = clk == OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC ? 0 : 1; |
| 56 | |
| 57 | return dsi_get_dsidev_from_id(dsi_module); |
| 58 | } |
| 59 | |
Archit Taneja | 7636b3b | 2011-04-12 13:52:26 +0530 | [diff] [blame] | 60 | static bool dpi_use_dsi_pll(struct omap_dss_device *dssdev) |
| 61 | { |
| 62 | if (dssdev->clocks.dispc.dispc_fclk_src == |
| 63 | OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC || |
Archit Taneja | 5a8b572 | 2011-05-12 17:26:29 +0530 | [diff] [blame] | 64 | dssdev->clocks.dispc.dispc_fclk_src == |
| 65 | OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC || |
Archit Taneja | 7636b3b | 2011-04-12 13:52:26 +0530 | [diff] [blame] | 66 | dssdev->clocks.dispc.channel.lcd_clk_src == |
Archit Taneja | 5a8b572 | 2011-05-12 17:26:29 +0530 | [diff] [blame] | 67 | OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC || |
| 68 | dssdev->clocks.dispc.channel.lcd_clk_src == |
| 69 | OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC) |
Archit Taneja | 7636b3b | 2011-04-12 13:52:26 +0530 | [diff] [blame] | 70 | return true; |
| 71 | else |
| 72 | return false; |
| 73 | } |
| 74 | |
Archit Taneja | 6d523e7 | 2012-06-21 09:33:55 +0530 | [diff] [blame] | 75 | static int dpi_set_dsi_clk(struct omap_dss_device *dssdev, |
Sumit Semwal | ff1b2cd | 2010-12-02 11:27:11 +0000 | [diff] [blame] | 76 | unsigned long pck_req, unsigned long *fck, int *lck_div, |
| 77 | int *pck_div) |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 78 | { |
| 79 | struct dsi_clock_info dsi_cinfo; |
| 80 | struct dispc_clock_info dispc_cinfo; |
| 81 | int r; |
| 82 | |
Archit Taneja | 6d523e7 | 2012-06-21 09:33:55 +0530 | [diff] [blame] | 83 | r = dsi_pll_calc_clock_div_pck(dpi.dsidev, pck_req, &dsi_cinfo, |
| 84 | &dispc_cinfo); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 85 | if (r) |
| 86 | return r; |
| 87 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 88 | r = dsi_pll_set_clock_div(dpi.dsidev, &dsi_cinfo); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 89 | if (r) |
| 90 | return r; |
| 91 | |
Archit Taneja | e888166 | 2011-04-12 13:52:24 +0530 | [diff] [blame] | 92 | dss_select_dispc_clk_source(dssdev->clocks.dispc.dispc_fclk_src); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 93 | |
Archit Taneja | 5cf9a26 | 2012-06-29 14:19:13 +0530 | [diff] [blame] | 94 | dpi.mgr_config.clock_info = dispc_cinfo; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 95 | |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 96 | *fck = dsi_cinfo.dsi_pll_hsdiv_dispc_clk; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 97 | *lck_div = dispc_cinfo.lck_div; |
| 98 | *pck_div = dispc_cinfo.pck_div; |
| 99 | |
| 100 | return 0; |
| 101 | } |
Archit Taneja | 7636b3b | 2011-04-12 13:52:26 +0530 | [diff] [blame] | 102 | |
Archit Taneja | 6d523e7 | 2012-06-21 09:33:55 +0530 | [diff] [blame] | 103 | static int dpi_set_dispc_clk(struct omap_dss_device *dssdev, |
Sumit Semwal | ff1b2cd | 2010-12-02 11:27:11 +0000 | [diff] [blame] | 104 | unsigned long pck_req, unsigned long *fck, int *lck_div, |
| 105 | int *pck_div) |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 106 | { |
| 107 | struct dss_clock_info dss_cinfo; |
| 108 | struct dispc_clock_info dispc_cinfo; |
| 109 | int r; |
| 110 | |
Archit Taneja | 6d523e7 | 2012-06-21 09:33:55 +0530 | [diff] [blame] | 111 | r = dss_calc_clock_div(pck_req, &dss_cinfo, &dispc_cinfo); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 112 | if (r) |
| 113 | return r; |
| 114 | |
| 115 | r = dss_set_clock_div(&dss_cinfo); |
| 116 | if (r) |
| 117 | return r; |
| 118 | |
Archit Taneja | 5cf9a26 | 2012-06-29 14:19:13 +0530 | [diff] [blame] | 119 | dpi.mgr_config.clock_info = dispc_cinfo; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 120 | |
| 121 | *fck = dss_cinfo.fck; |
| 122 | *lck_div = dispc_cinfo.lck_div; |
| 123 | *pck_div = dispc_cinfo.pck_div; |
| 124 | |
| 125 | return 0; |
| 126 | } |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 127 | |
| 128 | static int dpi_set_mode(struct omap_dss_device *dssdev) |
| 129 | { |
Archit Taneja | c499144 | 2012-08-08 14:28:54 +0530 | [diff] [blame] | 130 | struct omap_video_timings *t = &dpi.timings; |
Archit Taneja | 5d512fc | 2012-09-07 17:53:38 +0530 | [diff] [blame^] | 131 | struct omap_overlay_manager *mgr = dssdev->output->manager; |
Archit Taneja | 7636b3b | 2011-04-12 13:52:26 +0530 | [diff] [blame] | 132 | int lck_div = 0, pck_div = 0; |
| 133 | unsigned long fck = 0; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 134 | unsigned long pck; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 135 | int r = 0; |
| 136 | |
Archit Taneja | 7636b3b | 2011-04-12 13:52:26 +0530 | [diff] [blame] | 137 | if (dpi_use_dsi_pll(dssdev)) |
Archit Taneja | 6d523e7 | 2012-06-21 09:33:55 +0530 | [diff] [blame] | 138 | r = dpi_set_dsi_clk(dssdev, t->pixel_clock * 1000, &fck, |
| 139 | &lck_div, &pck_div); |
Archit Taneja | 7636b3b | 2011-04-12 13:52:26 +0530 | [diff] [blame] | 140 | else |
Archit Taneja | 6d523e7 | 2012-06-21 09:33:55 +0530 | [diff] [blame] | 141 | r = dpi_set_dispc_clk(dssdev, t->pixel_clock * 1000, &fck, |
| 142 | &lck_div, &pck_div); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 143 | if (r) |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 144 | return r; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 145 | |
| 146 | pck = fck / lck_div / pck_div / 1000; |
| 147 | |
| 148 | if (pck != t->pixel_clock) { |
| 149 | DSSWARN("Could not find exact pixel clock. " |
| 150 | "Requested %d kHz, got %lu kHz\n", |
| 151 | t->pixel_clock, pck); |
| 152 | |
| 153 | t->pixel_clock = pck; |
| 154 | } |
| 155 | |
Archit Taneja | 5d512fc | 2012-09-07 17:53:38 +0530 | [diff] [blame^] | 156 | dss_mgr_set_timings(mgr, t); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 157 | |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 158 | return 0; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 159 | } |
| 160 | |
Archit Taneja | 5cf9a26 | 2012-06-29 14:19:13 +0530 | [diff] [blame] | 161 | static void dpi_config_lcd_manager(struct omap_dss_device *dssdev) |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 162 | { |
Archit Taneja | 5d512fc | 2012-09-07 17:53:38 +0530 | [diff] [blame^] | 163 | struct omap_overlay_manager *mgr = dssdev->output->manager; |
| 164 | |
Archit Taneja | 5cf9a26 | 2012-06-29 14:19:13 +0530 | [diff] [blame] | 165 | dpi.mgr_config.io_pad_mode = DSS_IO_PAD_MODE_BYPASS; |
Archit Taneja | 569969d | 2011-08-22 17:41:57 +0530 | [diff] [blame] | 166 | |
Archit Taneja | 5cf9a26 | 2012-06-29 14:19:13 +0530 | [diff] [blame] | 167 | dpi.mgr_config.stallmode = false; |
| 168 | dpi.mgr_config.fifohandcheck = false; |
| 169 | |
Archit Taneja | c6b393d | 2012-07-06 15:30:52 +0530 | [diff] [blame] | 170 | dpi.mgr_config.video_port_width = dpi.data_lines; |
Archit Taneja | 5cf9a26 | 2012-06-29 14:19:13 +0530 | [diff] [blame] | 171 | |
| 172 | dpi.mgr_config.lcden_sig_polarity = 0; |
| 173 | |
Archit Taneja | 5d512fc | 2012-09-07 17:53:38 +0530 | [diff] [blame^] | 174 | dss_mgr_set_lcd_config(mgr, &dpi.mgr_config); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 175 | } |
| 176 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 177 | int omapdss_dpi_display_enable(struct omap_dss_device *dssdev) |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 178 | { |
Archit Taneja | 5d512fc | 2012-09-07 17:53:38 +0530 | [diff] [blame^] | 179 | struct omap_dss_output *out = dssdev->output; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 180 | int r; |
| 181 | |
Archit Taneja | c8a5e4e | 2012-07-05 12:52:46 +0530 | [diff] [blame] | 182 | mutex_lock(&dpi.lock); |
| 183 | |
Chandrabhanu Mahapatra | 195e672 | 2012-08-22 11:44:06 +0530 | [diff] [blame] | 184 | 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] | 185 | DSSERR("no VDSS_DSI regulator\n"); |
Archit Taneja | c8a5e4e | 2012-07-05 12:52:46 +0530 | [diff] [blame] | 186 | r = -ENODEV; |
| 187 | goto err_no_reg; |
Russell King | 4041071 | 2012-02-07 09:44:55 +0000 | [diff] [blame] | 188 | } |
| 189 | |
Archit Taneja | 5d512fc | 2012-09-07 17:53:38 +0530 | [diff] [blame^] | 190 | if (out == NULL || out->manager == NULL) { |
| 191 | DSSERR("failed to enable display: no output/manager\n"); |
Archit Taneja | c8a5e4e | 2012-07-05 12:52:46 +0530 | [diff] [blame] | 192 | r = -ENODEV; |
Archit Taneja | 5d512fc | 2012-09-07 17:53:38 +0530 | [diff] [blame^] | 193 | goto err_no_out_mgr; |
Tomi Valkeinen | 05e1d60 | 2011-06-23 16:38:21 +0300 | [diff] [blame] | 194 | } |
| 195 | |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 196 | r = omap_dss_start_device(dssdev); |
| 197 | if (r) { |
| 198 | DSSERR("failed to start device\n"); |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 199 | goto err_start_dev; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 200 | } |
| 201 | |
Chandrabhanu Mahapatra | 195e672 | 2012-08-22 11:44:06 +0530 | [diff] [blame] | 202 | if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI)) { |
Tomi Valkeinen | 8a2cfea | 2010-02-04 17:03:41 +0200 | [diff] [blame] | 203 | r = regulator_enable(dpi.vdds_dsi_reg); |
| 204 | if (r) |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 205 | goto err_reg_enable; |
Tomi Valkeinen | 8a2cfea | 2010-02-04 17:03:41 +0200 | [diff] [blame] | 206 | } |
| 207 | |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 208 | r = dispc_runtime_get(); |
| 209 | if (r) |
| 210 | goto err_get_dispc; |
| 211 | |
Tomi Valkeinen | de09e45 | 2012-09-21 12:09:54 +0300 | [diff] [blame] | 212 | r = dss_dpi_select_source(dssdev->channel); |
| 213 | if (r) |
| 214 | goto err_src_sel; |
| 215 | |
Archit Taneja | 7636b3b | 2011-04-12 13:52:26 +0530 | [diff] [blame] | 216 | if (dpi_use_dsi_pll(dssdev)) { |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 217 | r = dsi_runtime_get(dpi.dsidev); |
| 218 | if (r) |
| 219 | goto err_get_dsi; |
| 220 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 221 | r = dsi_pll_init(dpi.dsidev, 0, 1); |
Archit Taneja | 7636b3b | 2011-04-12 13:52:26 +0530 | [diff] [blame] | 222 | if (r) |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 223 | goto err_dsi_pll_init; |
Archit Taneja | 7636b3b | 2011-04-12 13:52:26 +0530 | [diff] [blame] | 224 | } |
| 225 | |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 226 | r = dpi_set_mode(dssdev); |
| 227 | if (r) |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 228 | goto err_set_mode; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 229 | |
Archit Taneja | 5cf9a26 | 2012-06-29 14:19:13 +0530 | [diff] [blame] | 230 | dpi_config_lcd_manager(dssdev); |
| 231 | |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 232 | mdelay(2); |
| 233 | |
Archit Taneja | 5d512fc | 2012-09-07 17:53:38 +0530 | [diff] [blame^] | 234 | r = dss_mgr_enable(out->manager); |
Tomi Valkeinen | 33ca237 | 2011-11-21 13:42:58 +0200 | [diff] [blame] | 235 | if (r) |
| 236 | goto err_mgr_enable; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 237 | |
Archit Taneja | c8a5e4e | 2012-07-05 12:52:46 +0530 | [diff] [blame] | 238 | mutex_unlock(&dpi.lock); |
| 239 | |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 240 | return 0; |
| 241 | |
Tomi Valkeinen | 33ca237 | 2011-11-21 13:42:58 +0200 | [diff] [blame] | 242 | err_mgr_enable: |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 243 | err_set_mode: |
Archit Taneja | 7636b3b | 2011-04-12 13:52:26 +0530 | [diff] [blame] | 244 | if (dpi_use_dsi_pll(dssdev)) |
Tomi Valkeinen | 19077a7 | 2011-05-18 11:33:44 +0300 | [diff] [blame] | 245 | dsi_pll_uninit(dpi.dsidev, true); |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 246 | err_dsi_pll_init: |
| 247 | if (dpi_use_dsi_pll(dssdev)) |
| 248 | dsi_runtime_put(dpi.dsidev); |
| 249 | err_get_dsi: |
Tomi Valkeinen | de09e45 | 2012-09-21 12:09:54 +0300 | [diff] [blame] | 250 | err_src_sel: |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 251 | dispc_runtime_put(); |
| 252 | err_get_dispc: |
Chandrabhanu Mahapatra | 195e672 | 2012-08-22 11:44:06 +0530 | [diff] [blame] | 253 | if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI)) |
Tomi Valkeinen | 8a2cfea | 2010-02-04 17:03:41 +0200 | [diff] [blame] | 254 | regulator_disable(dpi.vdds_dsi_reg); |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 255 | err_reg_enable: |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 256 | omap_dss_stop_device(dssdev); |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 257 | err_start_dev: |
Archit Taneja | 5d512fc | 2012-09-07 17:53:38 +0530 | [diff] [blame^] | 258 | err_no_out_mgr: |
Archit Taneja | c8a5e4e | 2012-07-05 12:52:46 +0530 | [diff] [blame] | 259 | err_no_reg: |
| 260 | mutex_unlock(&dpi.lock); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 261 | return r; |
| 262 | } |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 263 | EXPORT_SYMBOL(omapdss_dpi_display_enable); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 264 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 265 | void omapdss_dpi_display_disable(struct omap_dss_device *dssdev) |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 266 | { |
Archit Taneja | 5d512fc | 2012-09-07 17:53:38 +0530 | [diff] [blame^] | 267 | struct omap_overlay_manager *mgr = dssdev->output->manager; |
| 268 | |
Archit Taneja | c8a5e4e | 2012-07-05 12:52:46 +0530 | [diff] [blame] | 269 | mutex_lock(&dpi.lock); |
| 270 | |
Archit Taneja | 5d512fc | 2012-09-07 17:53:38 +0530 | [diff] [blame^] | 271 | dss_mgr_disable(mgr); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 272 | |
Archit Taneja | 7636b3b | 2011-04-12 13:52:26 +0530 | [diff] [blame] | 273 | if (dpi_use_dsi_pll(dssdev)) { |
| 274 | dss_select_dispc_clk_source(OMAP_DSS_CLK_SRC_FCK); |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 275 | dsi_pll_uninit(dpi.dsidev, true); |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 276 | dsi_runtime_put(dpi.dsidev); |
Archit Taneja | 7636b3b | 2011-04-12 13:52:26 +0530 | [diff] [blame] | 277 | } |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 278 | |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 279 | dispc_runtime_put(); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 280 | |
Chandrabhanu Mahapatra | 195e672 | 2012-08-22 11:44:06 +0530 | [diff] [blame] | 281 | if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI)) |
Tomi Valkeinen | 8a2cfea | 2010-02-04 17:03:41 +0200 | [diff] [blame] | 282 | regulator_disable(dpi.vdds_dsi_reg); |
| 283 | |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 284 | omap_dss_stop_device(dssdev); |
Archit Taneja | c8a5e4e | 2012-07-05 12:52:46 +0530 | [diff] [blame] | 285 | |
| 286 | mutex_unlock(&dpi.lock); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 287 | } |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 288 | EXPORT_SYMBOL(omapdss_dpi_display_disable); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 289 | |
Archit Taneja | c499144 | 2012-08-08 14:28:54 +0530 | [diff] [blame] | 290 | void omapdss_dpi_set_timings(struct omap_dss_device *dssdev, |
| 291 | struct omap_video_timings *timings) |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 292 | { |
| 293 | DSSDBG("dpi_set_timings\n"); |
Archit Taneja | c8a5e4e | 2012-07-05 12:52:46 +0530 | [diff] [blame] | 294 | |
| 295 | mutex_lock(&dpi.lock); |
| 296 | |
Archit Taneja | c499144 | 2012-08-08 14:28:54 +0530 | [diff] [blame] | 297 | dpi.timings = *timings; |
Archit Taneja | c499144 | 2012-08-08 14:28:54 +0530 | [diff] [blame] | 298 | |
Archit Taneja | c8a5e4e | 2012-07-05 12:52:46 +0530 | [diff] [blame] | 299 | mutex_unlock(&dpi.lock); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 300 | } |
Archit Taneja | c499144 | 2012-08-08 14:28:54 +0530 | [diff] [blame] | 301 | EXPORT_SYMBOL(omapdss_dpi_set_timings); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 302 | |
Tomi Valkeinen | 69b2048 | 2010-01-20 12:11:25 +0200 | [diff] [blame] | 303 | int dpi_check_timings(struct omap_dss_device *dssdev, |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 304 | struct omap_video_timings *timings) |
| 305 | { |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 306 | int r; |
Archit Taneja | 5d512fc | 2012-09-07 17:53:38 +0530 | [diff] [blame^] | 307 | struct omap_overlay_manager *mgr = dssdev->output->manager; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 308 | int lck_div, pck_div; |
| 309 | unsigned long fck; |
| 310 | unsigned long pck; |
Archit Taneja | 7636b3b | 2011-04-12 13:52:26 +0530 | [diff] [blame] | 311 | struct dispc_clock_info dispc_cinfo; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 312 | |
Archit Taneja | 5d512fc | 2012-09-07 17:53:38 +0530 | [diff] [blame^] | 313 | if (dss_mgr_check_timings(mgr, timings)) |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 314 | return -EINVAL; |
| 315 | |
| 316 | if (timings->pixel_clock == 0) |
| 317 | return -EINVAL; |
| 318 | |
Archit Taneja | 7636b3b | 2011-04-12 13:52:26 +0530 | [diff] [blame] | 319 | if (dpi_use_dsi_pll(dssdev)) { |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 320 | struct dsi_clock_info dsi_cinfo; |
Archit Taneja | 6d523e7 | 2012-06-21 09:33:55 +0530 | [diff] [blame] | 321 | r = dsi_pll_calc_clock_div_pck(dpi.dsidev, |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 322 | timings->pixel_clock * 1000, |
| 323 | &dsi_cinfo, &dispc_cinfo); |
| 324 | |
| 325 | if (r) |
| 326 | return r; |
| 327 | |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 328 | fck = dsi_cinfo.dsi_pll_hsdiv_dispc_clk; |
Archit Taneja | 7636b3b | 2011-04-12 13:52:26 +0530 | [diff] [blame] | 329 | } else { |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 330 | struct dss_clock_info dss_cinfo; |
Archit Taneja | 6d523e7 | 2012-06-21 09:33:55 +0530 | [diff] [blame] | 331 | r = dss_calc_clock_div(timings->pixel_clock * 1000, |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 332 | &dss_cinfo, &dispc_cinfo); |
| 333 | |
| 334 | if (r) |
| 335 | return r; |
| 336 | |
| 337 | fck = dss_cinfo.fck; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 338 | } |
Archit Taneja | 7636b3b | 2011-04-12 13:52:26 +0530 | [diff] [blame] | 339 | |
| 340 | lck_div = dispc_cinfo.lck_div; |
| 341 | pck_div = dispc_cinfo.pck_div; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 342 | |
| 343 | pck = fck / lck_div / pck_div / 1000; |
| 344 | |
| 345 | timings->pixel_clock = pck; |
| 346 | |
| 347 | return 0; |
| 348 | } |
Tomi Valkeinen | 69b2048 | 2010-01-20 12:11:25 +0200 | [diff] [blame] | 349 | EXPORT_SYMBOL(dpi_check_timings); |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 350 | |
Archit Taneja | c6b393d | 2012-07-06 15:30:52 +0530 | [diff] [blame] | 351 | void omapdss_dpi_set_data_lines(struct omap_dss_device *dssdev, int data_lines) |
| 352 | { |
| 353 | mutex_lock(&dpi.lock); |
| 354 | |
| 355 | dpi.data_lines = data_lines; |
| 356 | |
| 357 | mutex_unlock(&dpi.lock); |
| 358 | } |
| 359 | EXPORT_SYMBOL(omapdss_dpi_set_data_lines); |
| 360 | |
Tomi Valkeinen | 9d8232a | 2012-03-01 16:58:39 +0200 | [diff] [blame] | 361 | static int __init dpi_init_display(struct omap_dss_device *dssdev) |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 362 | { |
| 363 | DSSDBG("init_display\n"); |
| 364 | |
Chandrabhanu Mahapatra | 195e672 | 2012-08-22 11:44:06 +0530 | [diff] [blame] | 365 | if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI) && |
| 366 | dpi.vdds_dsi_reg == NULL) { |
Tomi Valkeinen | 5f42f2c | 2011-02-22 15:53:46 +0200 | [diff] [blame] | 367 | struct regulator *vdds_dsi; |
| 368 | |
| 369 | vdds_dsi = dss_get_vdds_dsi(); |
| 370 | |
| 371 | if (IS_ERR(vdds_dsi)) { |
| 372 | DSSERR("can't get VDDS_DSI regulator\n"); |
| 373 | return PTR_ERR(vdds_dsi); |
| 374 | } |
| 375 | |
| 376 | dpi.vdds_dsi_reg = vdds_dsi; |
| 377 | } |
| 378 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 379 | if (dpi_use_dsi_pll(dssdev)) { |
| 380 | enum omap_dss_clk_source dispc_fclk_src = |
| 381 | dssdev->clocks.dispc.dispc_fclk_src; |
| 382 | dpi.dsidev = dpi_get_dsidev(dispc_fclk_src); |
| 383 | } |
| 384 | |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 385 | return 0; |
| 386 | } |
| 387 | |
Tomi Valkeinen | 1521653 | 2012-09-06 14:29:31 +0300 | [diff] [blame] | 388 | static struct omap_dss_device * __init dpi_find_dssdev(struct platform_device *pdev) |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 389 | { |
Tomi Valkeinen | 35deca3 | 2012-03-01 15:45:53 +0200 | [diff] [blame] | 390 | struct omap_dss_board_info *pdata = pdev->dev.platform_data; |
Tomi Valkeinen | 1521653 | 2012-09-06 14:29:31 +0300 | [diff] [blame] | 391 | const char *def_disp_name = dss_get_default_display_name(); |
| 392 | struct omap_dss_device *def_dssdev; |
| 393 | int i; |
| 394 | |
| 395 | def_dssdev = NULL; |
Tomi Valkeinen | 35deca3 | 2012-03-01 15:45:53 +0200 | [diff] [blame] | 396 | |
| 397 | for (i = 0; i < pdata->num_devices; ++i) { |
| 398 | struct omap_dss_device *dssdev = pdata->devices[i]; |
| 399 | |
| 400 | if (dssdev->type != OMAP_DISPLAY_TYPE_DPI) |
| 401 | continue; |
| 402 | |
Tomi Valkeinen | 1521653 | 2012-09-06 14:29:31 +0300 | [diff] [blame] | 403 | if (def_dssdev == NULL) |
| 404 | def_dssdev = dssdev; |
Tomi Valkeinen | 9d8232a | 2012-03-01 16:58:39 +0200 | [diff] [blame] | 405 | |
Tomi Valkeinen | 1521653 | 2012-09-06 14:29:31 +0300 | [diff] [blame] | 406 | if (def_disp_name != NULL && |
| 407 | strcmp(dssdev->name, def_disp_name) == 0) { |
| 408 | def_dssdev = dssdev; |
| 409 | break; |
| 410 | } |
| 411 | } |
| 412 | |
| 413 | return def_dssdev; |
| 414 | } |
| 415 | |
Tomi Valkeinen | 5274484 | 2012-09-10 13:58:29 +0300 | [diff] [blame] | 416 | static void __init dpi_probe_pdata(struct platform_device *dpidev) |
Tomi Valkeinen | 1521653 | 2012-09-06 14:29:31 +0300 | [diff] [blame] | 417 | { |
Tomi Valkeinen | 5274484 | 2012-09-10 13:58:29 +0300 | [diff] [blame] | 418 | struct omap_dss_device *plat_dssdev; |
Tomi Valkeinen | 1521653 | 2012-09-06 14:29:31 +0300 | [diff] [blame] | 419 | struct omap_dss_device *dssdev; |
| 420 | int r; |
| 421 | |
Tomi Valkeinen | 5274484 | 2012-09-10 13:58:29 +0300 | [diff] [blame] | 422 | plat_dssdev = dpi_find_dssdev(dpidev); |
Tomi Valkeinen | 1521653 | 2012-09-06 14:29:31 +0300 | [diff] [blame] | 423 | |
Tomi Valkeinen | 5274484 | 2012-09-10 13:58:29 +0300 | [diff] [blame] | 424 | if (!plat_dssdev) |
| 425 | return; |
| 426 | |
| 427 | dssdev = dss_alloc_and_init_device(&dpidev->dev); |
Tomi Valkeinen | 1521653 | 2012-09-06 14:29:31 +0300 | [diff] [blame] | 428 | if (!dssdev) |
| 429 | return; |
| 430 | |
Tomi Valkeinen | 5274484 | 2012-09-10 13:58:29 +0300 | [diff] [blame] | 431 | dss_copy_device_pdata(dssdev, plat_dssdev); |
| 432 | |
Tomi Valkeinen | 1521653 | 2012-09-06 14:29:31 +0300 | [diff] [blame] | 433 | r = dpi_init_display(dssdev); |
| 434 | if (r) { |
| 435 | DSSERR("device %s init failed: %d\n", dssdev->name, r); |
Tomi Valkeinen | 5274484 | 2012-09-10 13:58:29 +0300 | [diff] [blame] | 436 | dss_put_device(dssdev); |
Tomi Valkeinen | 1521653 | 2012-09-06 14:29:31 +0300 | [diff] [blame] | 437 | return; |
| 438 | } |
| 439 | |
Tomi Valkeinen | 5274484 | 2012-09-10 13:58:29 +0300 | [diff] [blame] | 440 | r = dss_add_device(dssdev); |
Tomi Valkeinen | 1521653 | 2012-09-06 14:29:31 +0300 | [diff] [blame] | 441 | if (r) { |
| 442 | DSSERR("device %s register failed: %d\n", dssdev->name, r); |
Tomi Valkeinen | 5274484 | 2012-09-10 13:58:29 +0300 | [diff] [blame] | 443 | dss_put_device(dssdev); |
Tomi Valkeinen | 1521653 | 2012-09-06 14:29:31 +0300 | [diff] [blame] | 444 | return; |
Tomi Valkeinen | 35deca3 | 2012-03-01 15:45:53 +0200 | [diff] [blame] | 445 | } |
Tomi Valkeinen | 38f3daf | 2012-05-02 14:55:12 +0300 | [diff] [blame] | 446 | } |
| 447 | |
Archit Taneja | 81b87f5 | 2012-09-26 16:30:49 +0530 | [diff] [blame] | 448 | static void __init dpi_init_output(struct platform_device *pdev) |
| 449 | { |
| 450 | struct omap_dss_output *out = &dpi.output; |
| 451 | |
| 452 | out->pdev = pdev; |
| 453 | out->id = OMAP_DSS_OUTPUT_DPI; |
| 454 | out->type = OMAP_DISPLAY_TYPE_DPI; |
| 455 | |
| 456 | dss_register_output(out); |
| 457 | } |
| 458 | |
| 459 | static void __exit dpi_uninit_output(struct platform_device *pdev) |
| 460 | { |
| 461 | struct omap_dss_output *out = &dpi.output; |
| 462 | |
| 463 | dss_unregister_output(out); |
| 464 | } |
| 465 | |
Tomi Valkeinen | 38f3daf | 2012-05-02 14:55:12 +0300 | [diff] [blame] | 466 | static int __init omap_dpi_probe(struct platform_device *pdev) |
| 467 | { |
Archit Taneja | c8a5e4e | 2012-07-05 12:52:46 +0530 | [diff] [blame] | 468 | mutex_init(&dpi.lock); |
| 469 | |
Archit Taneja | 81b87f5 | 2012-09-26 16:30:49 +0530 | [diff] [blame] | 470 | dpi_init_output(pdev); |
| 471 | |
Tomi Valkeinen | 38f3daf | 2012-05-02 14:55:12 +0300 | [diff] [blame] | 472 | dpi_probe_pdata(pdev); |
Tomi Valkeinen | 35deca3 | 2012-03-01 15:45:53 +0200 | [diff] [blame] | 473 | |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 474 | return 0; |
| 475 | } |
| 476 | |
Tomi Valkeinen | 6e7e8f0 | 2012-02-17 17:41:13 +0200 | [diff] [blame] | 477 | static int __exit omap_dpi_remove(struct platform_device *pdev) |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 478 | { |
Tomi Valkeinen | 5274484 | 2012-09-10 13:58:29 +0300 | [diff] [blame] | 479 | dss_unregister_child_devices(&pdev->dev); |
Tomi Valkeinen | 35deca3 | 2012-03-01 15:45:53 +0200 | [diff] [blame] | 480 | |
Archit Taneja | 81b87f5 | 2012-09-26 16:30:49 +0530 | [diff] [blame] | 481 | dpi_uninit_output(pdev); |
| 482 | |
Tomi Valkeinen | a57dd4f | 2012-02-20 16:57:37 +0200 | [diff] [blame] | 483 | return 0; |
Tomi Valkeinen | 553c48c | 2009-08-07 13:15:50 +0300 | [diff] [blame] | 484 | } |
| 485 | |
Tomi Valkeinen | a57dd4f | 2012-02-20 16:57:37 +0200 | [diff] [blame] | 486 | static struct platform_driver omap_dpi_driver = { |
Tomi Valkeinen | 6e7e8f0 | 2012-02-17 17:41:13 +0200 | [diff] [blame] | 487 | .remove = __exit_p(omap_dpi_remove), |
Tomi Valkeinen | a57dd4f | 2012-02-20 16:57:37 +0200 | [diff] [blame] | 488 | .driver = { |
| 489 | .name = "omapdss_dpi", |
| 490 | .owner = THIS_MODULE, |
| 491 | }, |
| 492 | }; |
| 493 | |
Tomi Valkeinen | 6e7e8f0 | 2012-02-17 17:41:13 +0200 | [diff] [blame] | 494 | int __init dpi_init_platform_driver(void) |
Tomi Valkeinen | a57dd4f | 2012-02-20 16:57:37 +0200 | [diff] [blame] | 495 | { |
Tomi Valkeinen | 61055d4 | 2012-03-07 12:53:38 +0200 | [diff] [blame] | 496 | return platform_driver_probe(&omap_dpi_driver, omap_dpi_probe); |
Tomi Valkeinen | a57dd4f | 2012-02-20 16:57:37 +0200 | [diff] [blame] | 497 | } |
| 498 | |
Tomi Valkeinen | 6e7e8f0 | 2012-02-17 17:41:13 +0200 | [diff] [blame] | 499 | void __exit dpi_uninit_platform_driver(void) |
Tomi Valkeinen | a57dd4f | 2012-02-20 16:57:37 +0200 | [diff] [blame] | 500 | { |
| 501 | platform_driver_unregister(&omap_dpi_driver); |
| 502 | } |