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path: root/drivers/video/omap2/dss/dpi.c
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Diffstat (limited to 'drivers/video/omap2/dss/dpi.c')
-rw-r--r--drivers/video/omap2/dss/dpi.c181
1 files changed, 138 insertions, 43 deletions
diff --git a/drivers/video/omap2/dss/dpi.c b/drivers/video/omap2/dss/dpi.c
index 3266be23fc0..56748cf8760 100644
--- a/drivers/video/omap2/dss/dpi.c
+++ b/drivers/video/omap2/dss/dpi.c
@@ -29,17 +29,24 @@
#include <linux/errno.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
+#include <linux/string.h>
#include <video/omapdss.h>
-#include <plat/cpu.h>
#include "dss.h"
+#include "dss_features.h"
static struct {
struct regulator *vdds_dsi_reg;
struct platform_device *dsidev;
+ struct mutex lock;
+
+ struct omap_video_timings timings;
struct dss_lcd_mgr_config mgr_config;
+ int data_lines;
+
+ struct omap_dss_output output;
} dpi;
static struct platform_device *dpi_get_dsidev(enum omap_dss_clk_source clk)
@@ -121,7 +128,8 @@ static int dpi_set_dispc_clk(struct omap_dss_device *dssdev,
static int dpi_set_mode(struct omap_dss_device *dssdev)
{
- struct omap_video_timings *t = &dssdev->panel.timings;
+ struct omap_video_timings *t = &dpi.timings;
+ struct omap_overlay_manager *mgr = dssdev->output->manager;
int lck_div = 0, pck_div = 0;
unsigned long fck = 0;
unsigned long pck;
@@ -146,37 +154,44 @@ 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(mgr, t);
return 0;
}
static void dpi_config_lcd_manager(struct omap_dss_device *dssdev)
{
+ struct omap_overlay_manager *mgr = dssdev->output->manager;
+
dpi.mgr_config.io_pad_mode = DSS_IO_PAD_MODE_BYPASS;
dpi.mgr_config.stallmode = false;
dpi.mgr_config.fifohandcheck = false;
- dpi.mgr_config.video_port_width = dssdev->phy.dpi.data_lines;
+ dpi.mgr_config.video_port_width = dpi.data_lines;
dpi.mgr_config.lcden_sig_polarity = 0;
- dss_mgr_set_lcd_config(dssdev->manager, &dpi.mgr_config);
+ dss_mgr_set_lcd_config(mgr, &dpi.mgr_config);
}
int omapdss_dpi_display_enable(struct omap_dss_device *dssdev)
{
+ struct omap_dss_output *out = dssdev->output;
int r;
- if (cpu_is_omap34xx() && !dpi.vdds_dsi_reg) {
+ mutex_lock(&dpi.lock);
+
+ if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI) && !dpi.vdds_dsi_reg) {
DSSERR("no VDSS_DSI regulator\n");
- return -ENODEV;
+ r = -ENODEV;
+ goto err_no_reg;
}
- if (dssdev->manager == NULL) {
- DSSERR("failed to enable display: no manager\n");
- return -ENODEV;
+ if (out == NULL || out->manager == NULL) {
+ DSSERR("failed to enable display: no output/manager\n");
+ r = -ENODEV;
+ goto err_no_out_mgr;
}
r = omap_dss_start_device(dssdev);
@@ -185,7 +200,7 @@ int omapdss_dpi_display_enable(struct omap_dss_device *dssdev)
goto err_start_dev;
}
- if (cpu_is_omap34xx()) {
+ if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI)) {
r = regulator_enable(dpi.vdds_dsi_reg);
if (r)
goto err_reg_enable;
@@ -195,6 +210,10 @@ int omapdss_dpi_display_enable(struct omap_dss_device *dssdev)
if (r)
goto err_get_dispc;
+ r = dss_dpi_select_source(dssdev->channel);
+ if (r)
+ goto err_src_sel;
+
if (dpi_use_dsi_pll(dssdev)) {
r = dsi_runtime_get(dpi.dsidev);
if (r)
@@ -213,10 +232,12 @@ int omapdss_dpi_display_enable(struct omap_dss_device *dssdev)
mdelay(2);
- r = dss_mgr_enable(dssdev->manager);
+ r = dss_mgr_enable(out->manager);
if (r)
goto err_mgr_enable;
+ mutex_unlock(&dpi.lock);
+
return 0;
err_mgr_enable:
@@ -227,20 +248,28 @@ err_dsi_pll_init:
if (dpi_use_dsi_pll(dssdev))
dsi_runtime_put(dpi.dsidev);
err_get_dsi:
+err_src_sel:
dispc_runtime_put();
err_get_dispc:
- if (cpu_is_omap34xx())
+ if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI))
regulator_disable(dpi.vdds_dsi_reg);
err_reg_enable:
omap_dss_stop_device(dssdev);
err_start_dev:
+err_no_out_mgr:
+err_no_reg:
+ mutex_unlock(&dpi.lock);
return r;
}
EXPORT_SYMBOL(omapdss_dpi_display_enable);
void omapdss_dpi_display_disable(struct omap_dss_device *dssdev)
{
- dss_mgr_disable(dssdev->manager);
+ struct omap_overlay_manager *mgr = dssdev->output->manager;
+
+ mutex_lock(&dpi.lock);
+
+ dss_mgr_disable(mgr);
if (dpi_use_dsi_pll(dssdev)) {
dss_select_dispc_clk_source(OMAP_DSS_CLK_SRC_FCK);
@@ -250,44 +279,39 @@ void omapdss_dpi_display_disable(struct omap_dss_device *dssdev)
dispc_runtime_put();
- if (cpu_is_omap34xx())
+ if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI))
regulator_disable(dpi.vdds_dsi_reg);
omap_dss_stop_device(dssdev);
+
+ mutex_unlock(&dpi.lock);
}
EXPORT_SYMBOL(omapdss_dpi_display_disable);
-void dpi_set_timings(struct omap_dss_device *dssdev,
- struct omap_video_timings *timings)
+void omapdss_dpi_set_timings(struct omap_dss_device *dssdev,
+ struct omap_video_timings *timings)
{
- int r;
-
DSSDBG("dpi_set_timings\n");
- dssdev->panel.timings = *timings;
- if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) {
- r = dispc_runtime_get();
- if (r)
- return;
- dpi_set_mode(dssdev);
+ mutex_lock(&dpi.lock);
- dispc_runtime_put();
- } else {
- dss_mgr_set_timings(dssdev->manager, timings);
- }
+ dpi.timings = *timings;
+
+ mutex_unlock(&dpi.lock);
}
-EXPORT_SYMBOL(dpi_set_timings);
+EXPORT_SYMBOL(omapdss_dpi_set_timings);
int dpi_check_timings(struct omap_dss_device *dssdev,
struct omap_video_timings *timings)
{
int r;
+ struct omap_overlay_manager *mgr = dssdev->output->manager;
int lck_div, pck_div;
unsigned long fck;
unsigned long pck;
struct dispc_clock_info dispc_cinfo;
- if (dss_mgr_check_timings(dssdev->manager, timings))
+ if (dss_mgr_check_timings(mgr, timings))
return -EINVAL;
if (timings->pixel_clock == 0)
@@ -325,11 +349,22 @@ int dpi_check_timings(struct omap_dss_device *dssdev,
}
EXPORT_SYMBOL(dpi_check_timings);
+void omapdss_dpi_set_data_lines(struct omap_dss_device *dssdev, int data_lines)
+{
+ mutex_lock(&dpi.lock);
+
+ dpi.data_lines = data_lines;
+
+ mutex_unlock(&dpi.lock);
+}
+EXPORT_SYMBOL(omapdss_dpi_set_data_lines);
+
static int __init dpi_init_display(struct omap_dss_device *dssdev)
{
DSSDBG("init_display\n");
- if (cpu_is_omap34xx() && dpi.vdds_dsi_reg == NULL) {
+ if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI) &&
+ dpi.vdds_dsi_reg == NULL) {
struct regulator *vdds_dsi;
vdds_dsi = dss_get_vdds_dsi();
@@ -351,10 +386,14 @@ static int __init dpi_init_display(struct omap_dss_device *dssdev)
return 0;
}
-static void __init dpi_probe_pdata(struct platform_device *pdev)
+static struct omap_dss_device * __init dpi_find_dssdev(struct platform_device *pdev)
{
struct omap_dss_board_info *pdata = pdev->dev.platform_data;
- int i, r;
+ const char *def_disp_name = dss_get_default_display_name();
+ struct omap_dss_device *def_dssdev;
+ int i;
+
+ def_dssdev = NULL;
for (i = 0; i < pdata->num_devices; ++i) {
struct omap_dss_device *dssdev = pdata->devices[i];
@@ -362,21 +401,75 @@ static void __init dpi_probe_pdata(struct platform_device *pdev)
if (dssdev->type != OMAP_DISPLAY_TYPE_DPI)
continue;
- r = dpi_init_display(dssdev);
- if (r) {
- DSSERR("device %s init failed: %d\n", dssdev->name, r);
- continue;
+ if (def_dssdev == NULL)
+ def_dssdev = dssdev;
+
+ if (def_disp_name != NULL &&
+ strcmp(dssdev->name, def_disp_name) == 0) {
+ def_dssdev = dssdev;
+ break;
}
+ }
- r = omap_dss_register_device(dssdev, &pdev->dev, i);
- if (r)
- DSSERR("device %s register failed: %d\n",
- dssdev->name, r);
+ return def_dssdev;
+}
+
+static void __init dpi_probe_pdata(struct platform_device *dpidev)
+{
+ struct omap_dss_device *plat_dssdev;
+ struct omap_dss_device *dssdev;
+ int r;
+
+ plat_dssdev = dpi_find_dssdev(dpidev);
+
+ if (!plat_dssdev)
+ return;
+
+ dssdev = dss_alloc_and_init_device(&dpidev->dev);
+ if (!dssdev)
+ return;
+
+ dss_copy_device_pdata(dssdev, plat_dssdev);
+
+ r = dpi_init_display(dssdev);
+ if (r) {
+ DSSERR("device %s init failed: %d\n", dssdev->name, r);
+ dss_put_device(dssdev);
+ return;
+ }
+
+ r = dss_add_device(dssdev);
+ if (r) {
+ DSSERR("device %s register failed: %d\n", dssdev->name, r);
+ dss_put_device(dssdev);
+ return;
}
}
+static void __init dpi_init_output(struct platform_device *pdev)
+{
+ struct omap_dss_output *out = &dpi.output;
+
+ out->pdev = pdev;
+ out->id = OMAP_DSS_OUTPUT_DPI;
+ out->type = OMAP_DISPLAY_TYPE_DPI;
+
+ dss_register_output(out);
+}
+
+static void __exit dpi_uninit_output(struct platform_device *pdev)
+{
+ struct omap_dss_output *out = &dpi.output;
+
+ dss_unregister_output(out);
+}
+
static int __init omap_dpi_probe(struct platform_device *pdev)
{
+ mutex_init(&dpi.lock);
+
+ dpi_init_output(pdev);
+
dpi_probe_pdata(pdev);
return 0;
@@ -384,7 +477,9 @@ static int __init omap_dpi_probe(struct platform_device *pdev)
static int __exit omap_dpi_remove(struct platform_device *pdev)
{
- omap_dss_unregister_child_devices(&pdev->dev);
+ dss_unregister_child_devices(&pdev->dev);
+
+ dpi_uninit_output(pdev);
return 0;
}