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OMAPDSS: DSI: fix DSI channel source initialization 

During the initialization of the DSI protocol registers, we always set
the sources of all DSI channels to L4. However, we don't update the
value in the dsi_data, so we may end up with a different value in the
register and in the dsi_data, leading to DSI problems.

This patch fixes the issue by initializing also the channel source in
the dsi_data.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Archit Taneja <archit@ti.com>
This commit is contained in:
Tomi Valkeinen 2013-02-22 13:42:59 +02:00
parent b7dec9b66f
commit 2c1a3ea0dc
1 changed files with 3 additions and 0 deletions
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3
drivers/video/omap2/dss/dsi.c
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@ -2794,6 +2794,7 @@ static int dsi_vc_enable(struct platform_device *dsidev, int channel,
static void dsi_vc_initial_config(struct platform_device *dsidev, int channel)
{
struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev);
u32 r;
DSSDBG("Initial config of virtual channel %d", channel);
@ -2818,6 +2819,8 @@ static void dsi_vc_initial_config(struct platform_device *dsidev, int channel)
r = FLD_MOD(r, 4, 23, 21); /* DMA_TX_REQ_NB = no dma */
dsi_write_reg(dsidev, DSI_VC_CTRL(channel), r);
dsi->vc[channel].source = DSI_VC_SOURCE_L4;
}
static int dsi_vc_config_source(struct platform_device *dsidev, int channel,