diff options
| author | Roger Quadros <roger.quadros@nokia.com> | 2010-03-17 12:35:21 (GMT) |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@nokia.com> | 2010-05-18 11:14:29 (GMT) |
| commit | 508886cf98c81cee73cd75943b3d0039801327ab (patch) | |
| tree | 66c9a651c352e633f0c5521133b0444e2711c5af /drivers/video | |
| parent | b1d145b6d3c07cb9ccb6afb224c78a9d61f8cd17 (diff) | |
| download | linux-508886cf98c81cee73cd75943b3d0039801327ab.tar.xz | |
OMAP: DSS2: Use vdds_sdi regulator supply in SDI
This patch enables the use of vdds_sdi regulator in SDI subsystem.
We can disable the vdds_sdi voltage when not in use to save
power.
Signed-off-by: Roger Quadros <roger.quadros@nokia.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/omap2/dss/sdi.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/video/omap2/dss/sdi.c b/drivers/video/omap2/dss/sdi.c index 3de3c1e..ee07a3c 100644 --- a/drivers/video/omap2/dss/sdi.c +++ b/drivers/video/omap2/dss/sdi.c @@ -23,13 +23,16 @@ #include <linux/clk.h> #include <linux/delay.h> #include <linux/err.h> +#include <linux/regulator/consumer.h> #include <plat/display.h> +#include <plat/cpu.h> #include "dss.h" static struct { bool skip_init; bool update_enabled; + struct regulator *vdds_sdi_reg; } sdi; static void sdi_basic_init(void) @@ -57,6 +60,10 @@ int omapdss_sdi_display_enable(struct omap_dss_device *dssdev) goto err0; } + r = regulator_enable(sdi.vdds_sdi_reg); + if (r) + goto err1; + /* In case of skip_init sdi_init has already enabled the clocks */ if (!sdi.skip_init) dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK1); @@ -120,6 +127,7 @@ int omapdss_sdi_display_enable(struct omap_dss_device *dssdev) return 0; err2: dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK1); + regulator_disable(sdi.vdds_sdi_reg); err1: omap_dss_stop_device(dssdev); err0: @@ -135,6 +143,8 @@ void omapdss_sdi_display_disable(struct omap_dss_device *dssdev) dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK1); + regulator_disable(sdi.vdds_sdi_reg); + omap_dss_stop_device(dssdev); } EXPORT_SYMBOL(omapdss_sdi_display_disable); @@ -151,6 +161,11 @@ int sdi_init(bool skip_init) /* we store this for first display enable, then clear it */ sdi.skip_init = skip_init; + sdi.vdds_sdi_reg = dss_get_vdds_sdi(); + if (IS_ERR(sdi.vdds_sdi_reg)) { + DSSERR("can't get VDDS_SDI regulator\n"); + return PTR_ERR(sdi.vdds_sdi_reg); + } /* * Enable clocks already here, otherwise there would be a toggle * of them until sdi_display_enable is called. |