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OMAPDSS: DPI: Add support for multiple instances 

Register DPI outputs, and assign the port_num to them as specified by the
'reg' property in the DPI ports in DT.

To support multiple DPI instances, dpi_get_channel needs to take the DPI
instance's port number to get the corresponding channel. Make it take this
argument. We just pass 0 in the non-DT path, since we don't support multiple
instances in the non-DT case.

Signed-off-by: Archit Taneja <archit@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
hifive-unleashed-5.1
Archit Taneja 2014-05-06 17:07:39 +05:30 committed by Tomi Valkeinen
parent ef691ff48b
commit f7e38fe9e2
1 changed files with 23 additions and 3 deletions
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26
drivers/video/fbdev/omap2/dss/dpi.c
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@ -616,7 +616,7 @@ static void dpi_init_pll(struct dpi_data *dpi)
* the channel in some more dynamic manner, or get the channel as a user
* parameter.
*/
static enum omap_channel dpi_get_channel(void)
static enum omap_channel dpi_get_channel(int port_num)
{
switch (omapdss_get_version()) {
case OMAPDSS_VER_OMAP24xx:
@ -710,7 +710,7 @@ static void dpi_init_output(struct platform_device *pdev)
out->id = OMAP_DSS_OUTPUT_DPI;
out->output_type = OMAP_DISPLAY_TYPE_DPI;
out->name = "dpi.0";
out->dispc_channel = dpi_get_channel();
out->dispc_channel = dpi_get_channel(0);
out->ops.dpi = &dpi_ops;
out->owner = THIS_MODULE;
@ -730,11 +730,31 @@ static void dpi_init_output_port(struct platform_device *pdev,
{
struct dpi_data *dpi = port->data;
struct omap_dss_device *out = &dpi->output;
int r;
u32 port_num;
r = of_property_read_u32(port, "reg", &port_num);
if (r)
port_num = 0;
switch (port_num) {
case 2:
out->name = "dpi.2";
break;
case 1:
out->name = "dpi.1";
break;
case 0:
default:
out->name = "dpi.0";
break;
}
out->dev = &pdev->dev;
out->id = OMAP_DSS_OUTPUT_DPI;
out->output_type = OMAP_DISPLAY_TYPE_DPI;
out->dispc_channel = dpi_get_channel();
out->dispc_channel = dpi_get_channel(port_num);
out->port_num = port_num;
out->ops.dpi = &dpi_ops;
out->owner = THIS_MODULE;