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authorTomi Valkeinen <tomi.valkeinen@ti.com>2014-12-31 12:26:06 +0300
committerTomi Valkeinen <tomi.valkeinen@ti.com>2015-02-04 13:32:07 +0300
commita2408154a14b5633b1f233e4b5fea85c09917eef (patch)
treec8d78d4473669f5a18bdcdd741b3161ef0be0f40 /drivers/video
parentadb5ff835c0db95e969c717f981f65f855f147bf (diff)
downloadlinux-a2408154a14b5633b1f233e4b5fea85c09917eef.tar.xz
OMAPDSS: DPI: DRA7xx support
Add support for DRA7xx DPI output. DRA7xx has three DPI outputs, each of which gets its input from a DISPC channel. However, DRA72x has only one video PLL, and DRA74x has two video PLLs. In both cases the video PLLs need to be shared between multiple outputs. The driver doesn't handle this at the moment. Also, DRA7xx requires configuring CONTROL module bits to route the clock from the PLL to the used DISPC channel. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/fbdev/omap2/dss/dpi.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/video/fbdev/omap2/dss/dpi.c b/drivers/video/fbdev/omap2/dss/dpi.c
index 9a2f8c3b102d..f83e7b030249 100644
--- a/drivers/video/fbdev/omap2/dss/dpi.c
+++ b/drivers/video/fbdev/omap2/dss/dpi.c
@@ -106,6 +106,17 @@ static struct dss_pll *dpi_get_pll(enum omap_channel channel)
return NULL;
}
+ case OMAPDSS_VER_DRA7xx:
+ switch (channel) {
+ case OMAP_DSS_CHANNEL_LCD:
+ case OMAP_DSS_CHANNEL_LCD2:
+ return dss_pll_find("video0");
+ case OMAP_DSS_CHANNEL_LCD3:
+ return dss_pll_find("video1");
+ default:
+ return NULL;
+ }
+
default:
return NULL;
}
@@ -590,6 +601,10 @@ static void dpi_init_pll(struct dpi_data *dpi)
if (!pll)
return;
+ /* On DRA7 we need to set a mux to use the PLL */
+ if (omapdss_get_version() == OMAPDSS_VER_DRA7xx)
+ dss_ctrl_pll_set_control_mux(pll->id, dpi->output.dispc_channel);
+
if (dpi_verify_dsi_pll(pll)) {
DSSWARN("DSI PLL not operational\n");
return;
@@ -615,6 +630,17 @@ static enum omap_channel dpi_get_channel(int port_num)
case OMAPDSS_VER_AM43xx:
return OMAP_DSS_CHANNEL_LCD;
+ case OMAPDSS_VER_DRA7xx:
+ switch (port_num) {
+ case 2:
+ return OMAP_DSS_CHANNEL_LCD3;
+ case 1:
+ return OMAP_DSS_CHANNEL_LCD2;
+ case 0:
+ default:
+ return OMAP_DSS_CHANNEL_LCD;
+ }
+
case OMAPDSS_VER_OMAP4430_ES1:
case OMAPDSS_VER_OMAP4430_ES2:
case OMAPDSS_VER_OMAP4: