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path: root/drivers/video/omap2/displays/panel-taal.c
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Diffstat (limited to 'drivers/video/omap2/displays/panel-taal.c')
-rw-r--r--drivers/video/omap2/displays/panel-taal.c253
1 files changed, 206 insertions, 47 deletions
diff --git a/drivers/video/omap2/displays/panel-taal.c b/drivers/video/omap2/displays/panel-taal.c
index 1f01dfc5e52..fcd6a61a91e 100644
--- a/drivers/video/omap2/displays/panel-taal.c
+++ b/drivers/video/omap2/displays/panel-taal.c
@@ -63,6 +63,8 @@
/* #define TAAL_USE_ESD_CHECK */
#define TAAL_ESD_CHECK_PERIOD msecs_to_jiffies(5000)
+static int _taal_enable_te(struct omap_dss_device *dssdev, bool enable);
+
struct taal_data {
struct backlight_device *bldev;
@@ -510,15 +512,12 @@ static int taal_probe(struct omap_dss_device *dssdev)
if (td->esd_wq == NULL) {
dev_err(&dssdev->dev, "can't create ESD workqueue\n");
r = -ENOMEM;
- goto err2;
+ goto err1;
}
INIT_DELAYED_WORK_DEFERRABLE(&td->esd_work, taal_esd_work);
dev_set_drvdata(&dssdev->dev, td);
- dssdev->get_timings = taal_get_timings;
- dssdev->get_resolution = taal_get_resolution;
-
/* if no platform set_backlight() defined, presume DSI backlight
* control */
if (!dssdev->set_backlight)
@@ -528,7 +527,7 @@ static int taal_probe(struct omap_dss_device *dssdev)
&taal_bl_ops);
if (IS_ERR(bldev)) {
r = PTR_ERR(bldev);
- goto err1;
+ goto err2;
}
td->bldev = bldev;
@@ -621,14 +620,12 @@ static void taal_remove(struct omap_dss_device *dssdev)
kfree(td);
}
-static int taal_enable(struct omap_dss_device *dssdev)
+static int taal_power_on(struct omap_dss_device *dssdev)
{
struct taal_data *td = dev_get_drvdata(&dssdev->dev);
u8 id1, id2, id3;
int r;
- dev_dbg(&dssdev->dev, "enable\n");
-
if (dssdev->platform_enable) {
r = dssdev->platform_enable(dssdev);
if (r)
@@ -638,6 +635,16 @@ static int taal_enable(struct omap_dss_device *dssdev)
/* it seems we have to wait a bit until taal is ready */
msleep(5);
+ dsi_bus_lock();
+
+ r = omapdss_dsi_display_enable(dssdev);
+ if (r) {
+ dev_err(&dssdev->dev, "failed to enable DSI\n");
+ goto err0;
+ }
+
+ omapdss_dsi_vc_enable_hs(TCH, false);
+
r = taal_sleep_out(td);
if (r)
goto err;
@@ -661,6 +668,10 @@ static int taal_enable(struct omap_dss_device *dssdev)
taal_dcs_write_0(DCS_DISPLAY_ON);
+ r = _taal_enable_te(dssdev, td->te_enabled);
+ if (r)
+ goto err;
+
#ifdef TAAL_USE_ESD_CHECK
queue_delayed_work(td->esd_wq, &td->esd_work, TAAL_ESD_CHECK_PERIOD);
#endif
@@ -676,19 +687,27 @@ static int taal_enable(struct omap_dss_device *dssdev)
td->intro_printed = true;
}
+ omapdss_dsi_vc_enable_hs(TCH, true);
+
+ dsi_bus_unlock();
+
return 0;
err:
+ dsi_bus_unlock();
+
+ omapdss_dsi_display_disable(dssdev);
+err0:
if (dssdev->platform_disable)
dssdev->platform_disable(dssdev);
return r;
}
-static void taal_disable(struct omap_dss_device *dssdev)
+static void taal_power_off(struct omap_dss_device *dssdev)
{
struct taal_data *td = dev_get_drvdata(&dssdev->dev);
- dev_dbg(&dssdev->dev, "disable\n");
+ dsi_bus_lock();
cancel_delayed_work(&td->esd_work);
@@ -698,41 +717,124 @@ static void taal_disable(struct omap_dss_device *dssdev)
/* wait a bit so that the message goes through */
msleep(10);
+ omapdss_dsi_display_disable(dssdev);
+
if (dssdev->platform_disable)
dssdev->platform_disable(dssdev);
td->enabled = 0;
+
+ dsi_bus_unlock();
+}
+
+static int taal_enable(struct omap_dss_device *dssdev)
+{
+ int r;
+ dev_dbg(&dssdev->dev, "enable\n");
+
+ if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED)
+ return -EINVAL;
+
+ r = taal_power_on(dssdev);
+ if (r)
+ return r;
+
+ dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
+
+ return r;
+}
+
+static void taal_disable(struct omap_dss_device *dssdev)
+{
+ dev_dbg(&dssdev->dev, "disable\n");
+
+ if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
+ taal_power_off(dssdev);
+
+ dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
}
static int taal_suspend(struct omap_dss_device *dssdev)
{
- struct taal_data *td = dev_get_drvdata(&dssdev->dev);
- struct backlight_device *bldev = td->bldev;
+ dev_dbg(&dssdev->dev, "suspend\n");
- bldev->props.power = FB_BLANK_POWERDOWN;
- taal_bl_update_status(bldev);
+ if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
+ return -EINVAL;
+
+ taal_power_off(dssdev);
+ dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED;
return 0;
}
static int taal_resume(struct omap_dss_device *dssdev)
{
+ int r;
+ dev_dbg(&dssdev->dev, "resume\n");
+
+ if (dssdev->state != OMAP_DSS_DISPLAY_SUSPENDED)
+ return -EINVAL;
+
+ r = taal_power_on(dssdev);
+ dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
+ return r;
+}
+
+static void taal_framedone_cb(int err, void *data)
+{
+ struct omap_dss_device *dssdev = data;
+ dev_dbg(&dssdev->dev, "framedone, err %d\n", err);
+ dsi_bus_unlock();
+}
+
+static int taal_update(struct omap_dss_device *dssdev,
+ u16 x, u16 y, u16 w, u16 h)
+{
struct taal_data *td = dev_get_drvdata(&dssdev->dev);
- struct backlight_device *bldev = td->bldev;
+ int r;
- bldev->props.power = FB_BLANK_UNBLANK;
- taal_bl_update_status(bldev);
+ dev_dbg(&dssdev->dev, "update %d, %d, %d x %d\n", x, y, w, h);
+
+ dsi_bus_lock();
+
+ if (!td->enabled) {
+ r = 0;
+ goto err;
+ }
+
+ r = omap_dsi_prepare_update(dssdev, &x, &y, &w, &h);
+ if (r)
+ goto err;
+
+ r = taal_set_update_window(x, y, w, h);
+ if (r)
+ goto err;
+
+ r = omap_dsi_update(dssdev, TCH, x, y, w, h,
+ taal_framedone_cb, dssdev);
+ if (r)
+ goto err;
+ /* note: no bus_unlock here. unlock is in framedone_cb */
return 0;
+err:
+ dsi_bus_unlock();
+ return r;
}
-static void taal_setup_update(struct omap_dss_device *dssdev,
- u16 x, u16 y, u16 w, u16 h)
+static int taal_sync(struct omap_dss_device *dssdev)
{
- taal_set_update_window(x, y, w, h);
+ dev_dbg(&dssdev->dev, "sync\n");
+
+ dsi_bus_lock();
+ dsi_bus_unlock();
+
+ dev_dbg(&dssdev->dev, "sync done\n");
+
+ return 0;
}
-static int taal_enable_te(struct omap_dss_device *dssdev, bool enable)
+static int _taal_enable_te(struct omap_dss_device *dssdev, bool enable)
{
struct taal_data *td = dev_get_drvdata(&dssdev->dev);
int r;
@@ -744,25 +846,32 @@ static int taal_enable_te(struct omap_dss_device *dssdev, bool enable)
else
r = taal_dcs_write_0(DCS_TEAR_OFF);
+ omapdss_dsi_enable_te(dssdev, enable);
+
+ /* XXX for some reason, DSI TE breaks if we don't wait here.
+ * Panel bug? Needs more studying */
+ msleep(100);
+
return r;
}
-static int taal_wait_te(struct omap_dss_device *dssdev)
+static int taal_enable_te(struct omap_dss_device *dssdev, bool enable)
{
- struct taal_data *td = dev_get_drvdata(&dssdev->dev);
- long wait = msecs_to_jiffies(500);
+ int r;
- if (!td->use_ext_te || !td->te_enabled)
- return 0;
+ dsi_bus_lock();
- INIT_COMPLETION(td->te_completion);
- wait = wait_for_completion_timeout(&td->te_completion, wait);
- if (wait == 0) {
- dev_err(&dssdev->dev, "timeout waiting TE\n");
- return -ETIME;
- }
+ r = _taal_enable_te(dssdev, enable);
- return 0;
+ dsi_bus_unlock();
+
+ return r;
+}
+
+static int taal_get_te(struct omap_dss_device *dssdev)
+{
+ struct taal_data *td = dev_get_drvdata(&dssdev->dev);
+ return td->te_enabled;
}
static int taal_rotate(struct omap_dss_device *dssdev, u8 rotate)
@@ -772,16 +881,21 @@ static int taal_rotate(struct omap_dss_device *dssdev, u8 rotate)
dev_dbg(&dssdev->dev, "rotate %d\n", rotate);
+ dsi_bus_lock();
+
if (td->enabled) {
r = taal_set_addr_mode(rotate, td->mirror);
-
if (r)
- return r;
+ goto err;
}
td->rotate = rotate;
+ dsi_bus_unlock();
return 0;
+err:
+ dsi_bus_unlock();
+ return r;
}
static u8 taal_get_rotate(struct omap_dss_device *dssdev)
@@ -797,16 +911,20 @@ static int taal_mirror(struct omap_dss_device *dssdev, bool enable)
dev_dbg(&dssdev->dev, "mirror %d\n", enable);
+ dsi_bus_lock();
if (td->enabled) {
r = taal_set_addr_mode(td->rotate, enable);
-
if (r)
- return r;
+ goto err;
}
td->mirror = enable;
+ dsi_bus_unlock();
return 0;
+err:
+ dsi_bus_unlock();
+ return r;
}
static bool taal_get_mirror(struct omap_dss_device *dssdev)
@@ -820,17 +938,23 @@ static int taal_run_test(struct omap_dss_device *dssdev, int test_num)
u8 id1, id2, id3;
int r;
+ dsi_bus_lock();
+
r = taal_dcs_read_1(DCS_GET_ID1, &id1);
if (r)
- return r;
+ goto err;
r = taal_dcs_read_1(DCS_GET_ID2, &id2);
if (r)
- return r;
+ goto err;
r = taal_dcs_read_1(DCS_GET_ID3, &id3);
if (r)
- return r;
+ goto err;
+ dsi_bus_unlock();
return 0;
+err:
+ dsi_bus_unlock();
+ return r;
}
static int taal_memory_read(struct omap_dss_device *dssdev,
@@ -841,6 +965,10 @@ static int taal_memory_read(struct omap_dss_device *dssdev,
int first = 1;
int plen;
unsigned buf_used = 0;
+ struct taal_data *td = dev_get_drvdata(&dssdev->dev);
+
+ if (!td->enabled)
+ return -ENODEV;
if (size < w * h * 3)
return -ENOMEM;
@@ -849,6 +977,8 @@ static int taal_memory_read(struct omap_dss_device *dssdev,
dssdev->panel.timings.x_res *
dssdev->panel.timings.y_res * 3);
+ dsi_bus_lock();
+
/* plen 1 or 2 goes into short packet. until checksum error is fixed,
* use short packets. plen 32 works, but bigger packets seem to cause
* an error. */
@@ -857,11 +987,11 @@ static int taal_memory_read(struct omap_dss_device *dssdev,
else
plen = 2;
- taal_setup_update(dssdev, x, y, w, h);
+ taal_set_update_window(x, y, w, h);
r = dsi_vc_set_max_rx_packet_size(TCH, plen);
if (r)
- return r;
+ goto err0;
while (buf_used < size) {
u8 dcs_cmd = first ? 0x2e : 0x3e;
@@ -894,7 +1024,8 @@ static int taal_memory_read(struct omap_dss_device *dssdev,
err:
dsi_vc_set_max_rx_packet_size(TCH, 1);
-
+err0:
+ dsi_bus_unlock();
return r;
}
@@ -939,8 +1070,11 @@ static void taal_esd_work(struct work_struct *work)
}
/* Self-diagnostics result is also shown on TE GPIO line. We need
* to re-enable TE after self diagnostics */
- if (td->use_ext_te && td->te_enabled)
- taal_enable_te(dssdev, true);
+ if (td->use_ext_te && td->te_enabled) {
+ r = taal_dcs_write_1(DCS_TEAR_ON, 0);
+ if (r)
+ goto err;
+ }
dsi_bus_unlock();
@@ -958,6 +1092,20 @@ err:
queue_delayed_work(td->esd_wq, &td->esd_work, TAAL_ESD_CHECK_PERIOD);
}
+static int taal_set_update_mode(struct omap_dss_device *dssdev,
+ enum omap_dss_update_mode mode)
+{
+ if (mode != OMAP_DSS_UPDATE_MANUAL)
+ return -EINVAL;
+ return 0;
+}
+
+static enum omap_dss_update_mode taal_get_update_mode(
+ struct omap_dss_device *dssdev)
+{
+ return OMAP_DSS_UPDATE_MANUAL;
+}
+
static struct omap_dss_driver taal_driver = {
.probe = taal_probe,
.remove = taal_remove,
@@ -967,9 +1115,18 @@ static struct omap_dss_driver taal_driver = {
.suspend = taal_suspend,
.resume = taal_resume,
- .setup_update = taal_setup_update,
+ .set_update_mode = taal_set_update_mode,
+ .get_update_mode = taal_get_update_mode,
+
+ .update = taal_update,
+ .sync = taal_sync,
+
+ .get_resolution = taal_get_resolution,
+ .get_recommended_bpp = omapdss_default_get_recommended_bpp,
+
.enable_te = taal_enable_te,
- .wait_for_te = taal_wait_te,
+ .get_te = taal_get_te,
+
.set_rotate = taal_rotate,
.get_rotate = taal_get_rotate,
.set_mirror = taal_mirror,
@@ -977,6 +1134,8 @@ static struct omap_dss_driver taal_driver = {
.run_test = taal_run_test,
.memory_read = taal_memory_read,
+ .get_timings = taal_get_timings,
+
.driver = {
.name = "taal",
.owner = THIS_MODULE,
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-16 22:15:55 +0000