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| author | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2012-09-21 12:09:54 +0300 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2012-09-24 16:50:08 +0300 |
| commit | de09e4555592986219132b518c3f7834a28823cd (patch) | |
| tree | bdd8ef011e33e8bd009e3401c75000d8e6b5067c /drivers/video/omap2/dss/dss.c | |
| parent | 84273a9593306926af56ad5b4a69029c2886c5de (diff) | |
| download | linux-de09e4555592986219132b518c3f7834a28823cd.tar.gz linux-de09e4555592986219132b518c3f7834a28823cd.tar.bz2 linux-de09e4555592986219132b518c3f7834a28823cd.zip | |
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 <tomi.valkeinen@ti.com>
Cc: David Anders <x0132446@ti.com>
Diffstat (limited to 'drivers/video/omap2/dss/dss.c')
| -rw-r--r-- | drivers/video/omap2/dss/dss.c | 65 |
1 files changed, 65 insertions, 0 deletions
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) |