When a panel driver calls a DPI function, it passes the omap_dss_device
pointer, this pointer currently propagates within the DPI driver to configure
the interface.
Extract the omap_dss_output pointer from omap_dss_device received from the panel
driver, pass the output pointer to DPI functions local to the driver to
configure the interface, these functions no longer need omap_dss_device since
the driver now maintains a copy of output parameters.
Replace dssdev->manager references with out->manager references as only these
will be valid later.
With the addition of outputs. There is a possibility that an omap_dss_device
isn't connected to an output, or a manager isn't connected to an output yet.
Ensure that the DPI interface functions proceed only if the output is non NULL.
Signed-off-by: Archit Taneja <archit@xxxxxx>
---
drivers/video/omap2/dss/dpi.c | 55 +++++++++++++++++++++++++----------------
1 file changed, 34 insertions(+), 21 deletions(-)
diff --git a/drivers/video/omap2/dss/dpi.c b/drivers/video/omap2/dss/dpi.c
index 9a7aee5..cb17adb 100644
--- a/drivers/video/omap2/dss/dpi.c
+++ b/drivers/video/omap2/dss/dpi.c
@@ -73,7 +73,7 @@ static bool dpi_use_dsi_pll(struct omap_dss_device *dssdev)
return false;
}
-static int dpi_set_dsi_clk(struct omap_dss_device *dssdev,
+static int dpi_set_dsi_clk(struct omap_dss_output *out,
unsigned long pck_req, unsigned long *fck, int *lck_div,
int *pck_div)
{
@@ -90,7 +90,7 @@ static int dpi_set_dsi_clk(struct omap_dss_device *dssdev,
if (r)
return r;
- dss_select_dispc_clk_source(dssdev->clocks.dispc.dispc_fclk_src);
+ dss_select_dispc_clk_source(out->device->clocks.dispc.dispc_fclk_src);
dpi.mgr_config.clock_info = dispc_cinfo;
@@ -101,7 +101,7 @@ static int dpi_set_dsi_clk(struct omap_dss_device *dssdev,
return 0;
}
-static int dpi_set_dispc_clk(struct omap_dss_device *dssdev,
+static int dpi_set_dispc_clk(struct omap_dss_output *out,
unsigned long pck_req, unsigned long *fck, int *lck_div,
int *pck_div)
{
@@ -126,7 +126,7 @@ static int dpi_set_dispc_clk(struct omap_dss_device *dssdev,
return 0;
}
-static int dpi_set_mode(struct omap_dss_device *dssdev)
+static int dpi_set_mode(struct omap_dss_output *out)
{
struct omap_video_timings *t = &dpi.timings;
int lck_div = 0, pck_div = 0;
@@ -134,11 +134,11 @@ static int dpi_set_mode(struct omap_dss_device *dssdev)
unsigned long pck;
int r = 0;
- if (dpi_use_dsi_pll(dssdev))
- r = dpi_set_dsi_clk(dssdev, t->pixel_clock * 1000, &fck,
+ if (dpi_use_dsi_pll(out->device))
+ r = dpi_set_dsi_clk(out, t->pixel_clock * 1000, &fck,
&lck_div, &pck_div);
else
- r = dpi_set_dispc_clk(dssdev, t->pixel_clock * 1000, &fck,
+ r = dpi_set_dispc_clk(out, t->pixel_clock * 1000, &fck,
&lck_div, &pck_div);
if (r)
return r;
@@ -153,12 +153,12 @@ static int dpi_set_mode(struct omap_dss_device *dssdev)
t->pixel_clock = pck;
}
- dss_mgr_set_timings(dssdev->manager, t);
+ dss_mgr_set_timings(out->manager, t);
return 0;
}
-static void dpi_config_lcd_manager(struct omap_dss_device *dssdev)
+static void dpi_config_lcd_manager(struct omap_dss_output *out)
{
dpi.mgr_config.io_pad_mode = DSS_IO_PAD_MODE_BYPASS;
@@ -169,11 +169,12 @@ static void dpi_config_lcd_manager(struct omap_dss_device *dssdev)
dpi.mgr_config.lcden_sig_polarity = 0;
- dss_mgr_set_lcd_config(dssdev->manager, &dpi.mgr_config);
+ dss_mgr_set_lcd_config(out->manager, &dpi.mgr_config);
}
int omapdss_dpi_display_enable(struct omap_dss_device *dssdev)
{
+ struct omap_dss_output *out = dssdev->output;
int r;
mutex_lock(&dpi.lock);
@@ -184,10 +185,10 @@ int omapdss_dpi_display_enable(struct omap_dss_device *dssdev)
goto err_no_reg;
}
- if (dssdev->manager == NULL) {
- DSSERR("failed to enable display: no manager\n");
+ if (out == NULL || out->manager == NULL) {
+ DSSERR("failed to enable display: no output/manager\n");
r = -ENODEV;
- goto err_no_mgr;
+ goto err_no_out_mgr;
}
r = omap_dss_start_device(dssdev);
@@ -216,15 +217,15 @@ int omapdss_dpi_display_enable(struct omap_dss_device *dssdev)
goto err_dsi_pll_init;
}
- r = dpi_set_mode(dssdev);
+ r = dpi_set_mode(out);
if (r)
goto err_set_mode;
- dpi_config_lcd_manager(dssdev);
+ dpi_config_lcd_manager(out);
mdelay(2);
- r = dss_mgr_enable(dssdev->manager);
+ r = dss_mgr_enable(out->manager);
if (r)
goto err_mgr_enable;
@@ -247,7 +248,7 @@ err_get_dispc:
err_reg_enable:
omap_dss_stop_device(dssdev);
err_start_dev:
-err_no_mgr:
+err_no_out_mgr:
err_no_reg:
mutex_unlock(&dpi.lock);
return r;
@@ -256,9 +257,11 @@ EXPORT_SYMBOL(omapdss_dpi_display_enable);
void omapdss_dpi_display_disable(struct omap_dss_device *dssdev)
{
+ struct omap_dss_output *out = dssdev->output;
+
mutex_lock(&dpi.lock);
- dss_mgr_disable(dssdev->manager);
+ dss_mgr_disable(out->manager);
if (dpi_use_dsi_pll(dssdev)) {
dss_select_dispc_clk_source(OMAP_DSS_CLK_SRC_FCK);
@@ -280,10 +283,16 @@ EXPORT_SYMBOL(omapdss_dpi_display_disable);
void omapdss_dpi_set_timings(struct omap_dss_device *dssdev,
struct omap_video_timings *timings)
{
+ struct omap_dss_output *out = dssdev->output;
int r;
DSSDBG("dpi_set_timings\n");
+ if (out == NULL) {
+ DSSERR("No output connected to %s\n", dssdev->name);
+ return;
+ }
+
mutex_lock(&dpi.lock);
dpi.timings = *timings;
@@ -293,11 +302,11 @@ void omapdss_dpi_set_timings(struct omap_dss_device *dssdev,
if (r)
return;
- dpi_set_mode(dssdev);
+ dpi_set_mode(out);
dispc_runtime_put();
} else {
- dss_mgr_set_timings(dssdev->manager, timings);
+ dss_mgr_set_timings(out->manager, timings);
}
mutex_unlock(&dpi.lock);
@@ -312,8 +321,12 @@ int dpi_check_timings(struct omap_dss_device *dssdev,
unsigned long fck;
unsigned long pck;
struct dispc_clock_info dispc_cinfo;
+ struct omap_dss_output *out = dssdev->output;
+
+ if (out == NULL)
+ return -ENODEV;
- if (dss_mgr_check_timings(dssdev->manager, timings))
+ if (dss_mgr_check_timings(out->manager, timings))
return -EINVAL;
if (timings->pixel_clock == 0)
--
1.7.9.5
--
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