From de09e4555592986219132b518c3f7834a28823cd Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Fri, 21 Sep 2012 12:09:54 +0300 Subject: [PATCH] OMAPDSS: Add support for DPI source selection We can select the video source for DPI output as follows: OMAP2/3: always LCD1 OMAP4: LCD2 or DIGIT OMAP5: LCD1/LCD2/LCD3/DIGIT This patch adds support to select the source, and makes dpi.c call the function to set the source. Signed-off-by: Tomi Valkeinen Cc: David Anders --- drivers/video/omap2/dss/dpi.c | 5 +++ drivers/video/omap2/dss/dss.c | 65 +++++++++++++++++++++++++++++++++++ drivers/video/omap2/dss/dss.h | 1 + 3 files changed, 71 insertions(+) diff --git a/drivers/video/omap2/dss/dpi.c b/drivers/video/omap2/dss/dpi.c index 5ccce9b69e42..b7233882fcfd 100644 --- a/drivers/video/omap2/dss/dpi.c +++ b/drivers/video/omap2/dss/dpi.c @@ -203,6 +203,10 @@ int omapdss_dpi_display_enable(struct omap_dss_device *dssdev) if (r) goto err_get_dispc; + r = dss_dpi_select_source(dssdev->channel); + if (r) + goto err_src_sel; + if (dpi_use_dsi_pll(dssdev)) { r = dsi_runtime_get(dpi.dsidev); if (r) @@ -237,6 +241,7 @@ err_dsi_pll_init: if (dpi_use_dsi_pll(dssdev)) dsi_runtime_put(dpi.dsidev); err_get_dsi: +err_src_sel: dispc_runtime_put(); err_get_dispc: if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI)) diff --git a/drivers/video/omap2/dss/dss.c b/drivers/video/omap2/dss/dss.c index 660813b01197..2ab1c3e96553 100644 --- a/drivers/video/omap2/dss/dss.c +++ b/drivers/video/omap2/dss/dss.c @@ -69,6 +69,7 @@ struct dss_features { u8 fck_div_max; u8 dss_fck_multiplier; const char *clk_name; + int (*dpi_select_source)(enum omap_channel channel); }; static struct { @@ -623,6 +624,65 @@ enum dss_hdmi_venc_clk_source_select dss_get_hdmi_venc_clk_source(void) return REG_GET(DSS_CONTROL, 15, 15); } +static int dss_dpi_select_source_omap2_omap3(enum omap_channel channel) +{ + if (channel != OMAP_DSS_CHANNEL_LCD) + return -EINVAL; + + return 0; +} + +static int dss_dpi_select_source_omap4(enum omap_channel channel) +{ + int val; + + switch (channel) { + case OMAP_DSS_CHANNEL_LCD2: + val = 0; + break; + case OMAP_DSS_CHANNEL_DIGIT: + val = 1; + break; + default: + return -EINVAL; + } + + REG_FLD_MOD(DSS_CONTROL, val, 17, 17); + + return 0; +} + +static int dss_dpi_select_source_omap5(enum omap_channel channel) +{ + int val; + + switch (channel) { + case OMAP_DSS_CHANNEL_LCD: + val = 1; + break; + case OMAP_DSS_CHANNEL_LCD2: + val = 2; + break; + case OMAP_DSS_CHANNEL_LCD3: + val = 3; + break; + case OMAP_DSS_CHANNEL_DIGIT: + val = 0; + break; + default: + return -EINVAL; + } + + REG_FLD_MOD(DSS_CONTROL, val, 17, 16); + + return 0; +} + +int dss_dpi_select_source(enum omap_channel channel) +{ + return dss.feat->dpi_select_source(channel); +} + static int dss_get_clocks(void) { struct clk *clk; @@ -701,30 +761,35 @@ static const struct dss_features omap24xx_dss_feats __initconst = { .fck_div_max = 16, .dss_fck_multiplier = 2, .clk_name = NULL, + .dpi_select_source = &dss_dpi_select_source_omap2_omap3, }; static const struct dss_features omap34xx_dss_feats __initconst = { .fck_div_max = 16, .dss_fck_multiplier = 2, .clk_name = "dpll4_m4_ck", + .dpi_select_source = &dss_dpi_select_source_omap2_omap3, }; static const struct dss_features omap3630_dss_feats __initconst = { .fck_div_max = 32, .dss_fck_multiplier = 1, .clk_name = "dpll4_m4_ck", + .dpi_select_source = &dss_dpi_select_source_omap2_omap3, }; static const struct dss_features omap44xx_dss_feats __initconst = { .fck_div_max = 32, .dss_fck_multiplier = 1, .clk_name = "dpll_per_m5x2_ck", + .dpi_select_source = &dss_dpi_select_source_omap4, }; static const struct dss_features omap54xx_dss_feats __initconst = { .fck_div_max = 64, .dss_fck_multiplier = 1, .clk_name = "dpll_per_h12x2_ck", + .dpi_select_source = &dss_dpi_select_source_omap5, }; static int __init dss_init_features(struct device *dev) diff --git a/drivers/video/omap2/dss/dss.h b/drivers/video/omap2/dss/dss.h index 5e9fd7691728..2a51ae99474c 100644 --- a/drivers/video/omap2/dss/dss.h +++ b/drivers/video/omap2/dss/dss.h @@ -277,6 +277,7 @@ void dss_overlay_kobj_uninit(struct omap_overlay *ovl); int dss_init_platform_driver(void) __init; void dss_uninit_platform_driver(void); +int dss_dpi_select_source(enum omap_channel channel); void dss_select_hdmi_venc_clk_source(enum dss_hdmi_venc_clk_source_select); enum dss_hdmi_venc_clk_source_select dss_get_hdmi_venc_clk_source(void); const char *dss_get_generic_clk_source_name(enum omap_dss_clk_source clk_src); -- 2.20.1