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| author | Taras Kondratiuk <taras@ti.com> | 2012-08-08 00:21:27 -0500 |
|---|---|---|
| committer | Ziyan <jaraidaniel@gmail.com> | 2015-04-18 13:14:02 +0200 |
| commit | 5048454e9af8262f70b161bbf3bb6092b90d22f2 (patch) | |
| tree | 71b0228d8d0f4a2dfcefbf5a257bae969e80cc2b | |
| parent | ca97ea9bdec8a9351d06e0cfc962890163ba6917 (diff) | |
| download | kernel_samsung_tuna-5048454e9af8262f70b161bbf3bb6092b90d22f2.zip kernel_samsung_tuna-5048454e9af8262f70b161bbf3bb6092b90d22f2.tar.gz kernel_samsung_tuna-5048454e9af8262f70b161bbf3bb6092b90d22f2.tar.bz2 | |
OMAPDSS: DSS: Scale DSS OPP according to pixel clock rate
Before enabling pixel clock DSS should set its OPP
for OPP framework to set correct VDD_CORE voltage level.
When pixel clock is disabled DSS can set the lowest OPP.
Change-Id: Ia1459614ae306dba9b048b149e474442e2880bba
Signed-off-by: Taras Kondratiuk <taras@ti.com>
| -rw-r--r-- | arch/arm/mach-omap2/display.c | 4 | ||||
| -rwxr-xr-x | drivers/video/omap2/dss/dsi.c | 13 | ||||
| -rw-r--r-- | include/video/omapdss.h | 2 |
3 files changed, 18 insertions, 1 deletions
diff --git a/arch/arm/mach-omap2/display.c b/arch/arm/mach-omap2/display.c index dd91c20..417bd66 100644 --- a/arch/arm/mach-omap2/display.c +++ b/arch/arm/mach-omap2/display.c @@ -27,6 +27,8 @@ #include <plat/omap_device.h> #include <plat/omap-pm.h> +#include "dvfs.h" + static struct platform_device omap_display_device = { .name = "omapdss", .id = -1, @@ -97,7 +99,7 @@ int __init omap_display_init(struct omap_dss_board_info *board_data) } pdata.board_data = board_data; - + pdata.device_scale = omap_device_scale; for (i = 0; i < oh_count; i++) { oh = omap_hwmod_lookup(curr_dss_hwmod[i].oh_name); if (!oh) { diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c index ebbeb2d..fc0b00f 100755 --- a/drivers/video/omap2/dss/dsi.c +++ b/drivers/video/omap2/dss/dsi.c @@ -4722,6 +4722,7 @@ int omapdss_dsi_display_enable(struct omap_dss_device *dssdev) { struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); + struct omap_display_platform_data *dss_plat_data; int r = 0; DSSDBG("dsi_display_enable\n"); @@ -4740,6 +4741,11 @@ int omapdss_dsi_display_enable(struct omap_dss_device *dssdev) if (r) goto err_get_dsi; + dss_plat_data = dsidev->dev.platform_data; + dss_plat_data->device_scale(&dssdev->dev, + omap_hwmod_name_get_dev("dss_dispc"), + dssdev->panel.timings.pixel_clock * 1000); + if(!dssdev->skip_init) dsi_enable_pll_clock(dsidev, 1); @@ -4771,6 +4777,8 @@ err_init_dsi: dsi_display_uninit_dispc(dssdev); err_init_dispc: dsi_enable_pll_clock(dsidev, 0); + dss_plat_data->device_scale(&dssdev->dev, + omap_hwmod_name_get_dev("dss_dispc"), 0); dsi_runtime_put(dsidev); err_get_dsi: omap_dss_stop_device(dssdev); @@ -4786,6 +4794,7 @@ void omapdss_dsi_display_disable(struct omap_dss_device *dssdev, { struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); + struct omap_display_platform_data *dss_plat_data; DSSDBG("dsi_display_disable\n"); @@ -4797,6 +4806,10 @@ void omapdss_dsi_display_disable(struct omap_dss_device *dssdev, dsi_display_uninit_dsi(dssdev, disconnect_lanes, enter_ulps); + dss_plat_data = dsidev->dev.platform_data; + dss_plat_data->device_scale(&dssdev->dev, + omap_hwmod_name_get_dev("dss_dispc"), 0); + dsi_runtime_put(dsidev); dsi_enable_pll_clock(dsidev, 0); diff --git a/include/video/omapdss.h b/include/video/omapdss.h index 352640d..b6928f6 100644 --- a/include/video/omapdss.h +++ b/include/video/omapdss.h @@ -303,6 +303,8 @@ static inline int omap_display_init(struct omap_dss_board_info *board_data) struct omap_display_platform_data { struct omap_dss_board_info *board_data; /* TODO: Additional members to be added when PM is considered */ + int (*device_scale) (struct device *req_dev, struct device *target_dev, + unsigned long rate); }; struct omap_video_timings { |