2 * linux/drivers/video/omap2/dss/sdi.c
4 * Copyright (C) 2009 Nokia Corporation
5 * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 as published by
9 * the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 * You should have received a copy of the GNU General Public License along with
17 * this program. If not, see <http://www.gnu.org/licenses/>.
20 #define DSS_SUBSYS_NAME "SDI"
22 #include <linux/kernel.h>
23 #include <linux/delay.h>
24 #include <linux/err.h>
25 #include <linux/regulator/consumer.h>
27 #include <video/omapdss.h>
32 struct regulator
*vdds_sdi_reg
;
35 static void sdi_basic_init(struct omap_dss_device
*dssdev
)
38 dispc_set_parallel_interface_mode(dssdev
->manager
->id
,
39 OMAP_DSS_PARALLELMODE_BYPASS
);
41 dispc_set_lcd_display_type(dssdev
->manager
->id
,
42 OMAP_DSS_LCD_DISPLAY_TFT
);
44 dispc_set_tft_data_lines(dssdev
->manager
->id
, 24);
45 dispc_lcd_enable_signal_polarity(1);
48 int omapdss_sdi_display_enable(struct omap_dss_device
*dssdev
)
50 struct omap_video_timings
*t
= &dssdev
->panel
.timings
;
51 struct dss_clock_info dss_cinfo
;
52 struct dispc_clock_info dispc_cinfo
;
58 r
= omap_dss_start_device(dssdev
);
60 DSSERR("failed to start device\n");
64 r
= regulator_enable(sdi
.vdds_sdi_reg
);
68 r
= dss_runtime_get();
72 r
= dispc_runtime_get();
76 sdi_basic_init(dssdev
);
79 dssdev
->panel
.config
|= OMAP_DSS_LCD_RF
| OMAP_DSS_LCD_ONOFF
;
81 dispc_set_pol_freq(dssdev
->manager
->id
, dssdev
->panel
.config
,
82 dssdev
->panel
.acbi
, dssdev
->panel
.acb
);
84 r
= dss_calc_clock_div(1, t
->pixel_clock
* 1000,
85 &dss_cinfo
, &dispc_cinfo
);
87 goto err_calc_clock_div
;
90 lck_div
= dispc_cinfo
.lck_div
;
91 pck_div
= dispc_cinfo
.pck_div
;
93 pck
= fck
/ lck_div
/ pck_div
/ 1000;
95 if (pck
!= t
->pixel_clock
) {
96 DSSWARN("Could not find exact pixel clock. Requested %d kHz, "
100 t
->pixel_clock
= pck
;
104 dispc_set_lcd_timings(dssdev
->manager
->id
, t
);
106 r
= dss_set_clock_div(&dss_cinfo
);
108 goto err_set_dss_clock_div
;
110 r
= dispc_set_clock_div(dssdev
->manager
->id
, &dispc_cinfo
);
112 goto err_set_dispc_clock_div
;
114 dss_sdi_init(dssdev
->phy
.sdi
.datapairs
);
115 r
= dss_sdi_enable();
120 dssdev
->manager
->enable(dssdev
->manager
);
125 err_set_dispc_clock_div
:
126 err_set_dss_clock_div
:
132 regulator_disable(sdi
.vdds_sdi_reg
);
134 omap_dss_stop_device(dssdev
);
138 EXPORT_SYMBOL(omapdss_sdi_display_enable
);
140 void omapdss_sdi_display_disable(struct omap_dss_device
*dssdev
)
142 dssdev
->manager
->disable(dssdev
->manager
);
149 regulator_disable(sdi
.vdds_sdi_reg
);
151 omap_dss_stop_device(dssdev
);
153 EXPORT_SYMBOL(omapdss_sdi_display_disable
);
155 int sdi_init_display(struct omap_dss_device
*dssdev
)
157 DSSDBG("SDI init\n");
159 if (sdi
.vdds_sdi_reg
== NULL
) {
160 struct regulator
*vdds_sdi
;
162 vdds_sdi
= dss_get_vdds_sdi();
164 if (IS_ERR(vdds_sdi
)) {
165 DSSERR("can't get VDDS_SDI regulator\n");
166 return PTR_ERR(vdds_sdi
);
169 sdi
.vdds_sdi_reg
= vdds_sdi
;