This moves the panel refresh/update function from the panel driver into the DSI host driver to prepare for common drm_panel support.
Signed-off-by: Sebastian Reichel sebastian.reichel@collabora.com --- .../gpu/drm/omapdrm/displays/panel-dsi-cm.c | 68 ------------ drivers/gpu/drm/omapdrm/dss/dsi.c | 101 ++++++++++++++++-- drivers/gpu/drm/omapdrm/dss/omapdss.h | 7 +- drivers/gpu/drm/omapdrm/omap_crtc.c | 11 +- 4 files changed, 97 insertions(+), 90 deletions(-)
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c index 56398e2aec2d..9bfc262f5c5a 100644 --- a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c +++ b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c @@ -177,27 +177,6 @@ static int dsicm_get_id(struct panel_drv_data *ddata, u8 *id1, u8 *id2, u8 *id3) return 0; }
-static int dsicm_set_update_window(struct panel_drv_data *ddata, - u16 x, u16 y, u16 w, u16 h) -{ - struct mipi_dsi_device *dsi = ddata->dsi; - int r; - u16 x1 = x; - u16 x2 = x + w - 1; - u16 y1 = y; - u16 y2 = y + h - 1; - - r = mipi_dsi_dcs_set_column_address(dsi, x1, x2); - if (r < 0) - return r; - - r = mipi_dsi_dcs_set_page_address(dsi, y1, y2); - if (r < 0) - return r; - - return 0; -} - static int dsicm_bl_update_status(struct backlight_device *dev) { struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev); @@ -470,48 +449,6 @@ static void dsicm_disable(struct omap_dss_device *dssdev) mutex_unlock(&ddata->lock); }
-static void dsicm_framedone_cb(int err, void *data) -{ - struct panel_drv_data *ddata = data; - - dev_dbg(&ddata->dsi->dev, "framedone, err %d\n", err); - mutex_unlock(&ddata->lock); -} - -static int dsicm_update(struct omap_dss_device *dssdev, - u16 x, u16 y, u16 w, u16 h) -{ - struct panel_drv_data *ddata = to_panel_data(dssdev); - struct omap_dss_device *src = ddata->src; - int r; - - dev_dbg(&ddata->dsi->dev, "update %d, %d, %d x %d\n", x, y, w, h); - - mutex_lock(&ddata->lock); - - if (!ddata->enabled) { - r = 0; - goto err; - } - - /* XXX no need to send this every frame, but dsi break if not done */ - r = dsicm_set_update_window(ddata, 0, 0, ddata->vm.hactive, - ddata->vm.vactive); - if (r) - goto err; - - r = src->ops->dsi.update(src, ddata->dsi->channel, dsicm_framedone_cb, - ddata); - if (r) - goto err; - - /* note: no unlock here. unlock is src framedone_cb */ - return 0; -err: - mutex_unlock(&ddata->lock); - return r; -} - static int _dsicm_enable_te(struct panel_drv_data *ddata, bool enable) { struct mipi_dsi_device *dsi = ddata->dsi; @@ -572,10 +509,6 @@ static const struct omap_dss_device_ops dsicm_ops = { .check_timings = dsicm_check_timings, };
-static const struct omap_dss_driver dsicm_dss_driver = { - .update = dsicm_update, -}; - static int dsicm_probe_of(struct mipi_dsi_device *dsi) { struct device_node *node = dsi->dev.of_node; @@ -660,7 +593,6 @@ static int dsicm_probe(struct mipi_dsi_device *dsi) dssdev = &ddata->dssdev; dssdev->dev = dev; dssdev->ops = &dsicm_ops; - dssdev->driver = &dsicm_dss_driver; dssdev->type = OMAP_DISPLAY_TYPE_DSI; dssdev->display = true; dssdev->owner = THIS_MODULE; diff --git a/drivers/gpu/drm/omapdrm/dss/dsi.c b/drivers/gpu/drm/omapdrm/dss/dsi.c index 35c0ce72cd15..66ad7dbc66a2 100644 --- a/drivers/gpu/drm/omapdrm/dss/dsi.c +++ b/drivers/gpu/drm/omapdrm/dss/dsi.c @@ -217,6 +217,9 @@ static void dsi_display_uninit_dispc(struct dsi_data *dsi);
static int dsi_vc_send_null(struct dsi_data *dsi, int channel);
+static ssize_t _omap_dsi_host_transfer(struct dsi_data *dsi, + const struct mipi_dsi_msg *msg); + /* DSI PLL HSDIV indices */ #define HSDIV_DISPC 0 #define HSDIV_DSI 1 @@ -386,9 +389,6 @@ struct dsi_data {
struct delayed_work ulps_work;
- void (*framedone_callback)(int, void *); - void *framedone_data; - struct delayed_work framedone_timeout_work;
#ifdef DSI_CATCH_MISSING_TE @@ -3809,8 +3809,6 @@ static void dsi_handle_framedone(struct dsi_data *dsi, int error) dsi_set_ulps_auto(dsi, true); dsi_bus_unlock(dsi);
- dsi->framedone_callback(error, dsi->framedone_data); - if (!error) dsi_perf_show(dsi, "DISPC"); } @@ -3842,6 +3840,8 @@ static void dsi_framedone_irq_callback(void *data)
cancel_delayed_work(&dsi->framedone_timeout_work);
+ DSSDBG("Framedone received!\n"); + dsi_handle_framedone(dsi, 0); }
@@ -3863,17 +3863,69 @@ static int _dsi_update(struct dsi_data *dsi) return 0; }
-static int dsi_update(struct omap_dss_device *dssdev, int channel, - void (*callback)(int, void *), void *data) +static int _dsi_update_window(struct dsi_data *dsi, int channel, + int x, int y, int w, int h) +{ + int x1 = x, x2 = (x + w - 1); + int y1 = y, y2 = (y + h - 1); + u8 payloadX[5] = { MIPI_DCS_SET_COLUMN_ADDRESS, + x1 >> 8, x1 & 0xff, x2 >> 8, x2 & 0xff }; + u8 payloadY[5] = { MIPI_DCS_SET_PAGE_ADDRESS, + y1 >> 8, y1 & 0xff, y2 >> 8, y2 & 0xff }; + struct mipi_dsi_msg msgX = { 0 }, msgY = { 0 }; + int ret; + + WARN_ON(!dsi_bus_is_locked(dsi)); + + msgX.type = MIPI_DSI_DCS_LONG_WRITE; + msgX.channel = channel; + msgX.tx_buf = payloadX; + msgX.tx_len = sizeof(payloadX); + + msgY.type = MIPI_DSI_DCS_LONG_WRITE; + msgY.channel = channel; + msgY.tx_buf = payloadY; + msgY.tx_len = sizeof(payloadY); + + ret = _omap_dsi_host_transfer(dsi, &msgX); + if (ret != 0) + return ret; + + return _omap_dsi_host_transfer(dsi, &msgY); +} + +static int dsi_update_channel(struct omap_dss_device *dssdev, int channel) { struct dsi_data *dsi = to_dsi_data(dssdev); + int r; + + if (channel > 3) + return -EINVAL;
dsi_bus_lock(dsi); + + if (!dsi->vc[channel].dest) { + r = -ENODEV; + goto err; + } + + if (dsi->vm.hactive == 0 || dsi->vm.vactive == 0) { + r = -EINVAL; + goto err; + } + + DSSDBG("dsi_update_channel: %d", channel); + dsi_set_ulps_auto(dsi, false);
+ r = _dsi_update_window(dsi, channel, 0, 0, dsi->vm.hactive, + dsi->vm.vactive); + if (r < 0) { + DSSWARN("window update error: %d\n", r); + goto err; + } + dsi->update_channel = channel; - dsi->framedone_callback = callback; - dsi->framedone_data = data;
if (dsi->te_enabled && dsi->te_gpio) { schedule_delayed_work(&dsi->te_timeout_work, @@ -3883,6 +3935,24 @@ static int dsi_update(struct omap_dss_device *dssdev, int channel, _dsi_update(dsi); }
+ return 0; + +err: + dsi_set_ulps_auto(dsi, true); + dsi_bus_unlock(dsi); + return r; +} + +static int dsi_update_all(struct omap_dss_device *dssdev) +{ + int i, r; + + for (i = 0; i < 4; i++) { + r = dsi_update_channel(dssdev, i); + if (r != -ENODEV) + return r; + } + return 0; }
@@ -4102,7 +4172,9 @@ static void dsi_display_enable(struct omap_dss_device *dssdev) { struct dsi_data *dsi = to_dsi_data(dssdev); DSSDBG("dsi_display_enable\n"); + dsi_bus_lock(dsi); dsi_display_ulps_enable(dsi); + dsi_bus_unlock(dsi); }
static void dsi_display_ulps_disable(struct dsi_data *dsi, @@ -4128,7 +4200,9 @@ static void dsi_display_disable(struct omap_dss_device *dssdev) { struct dsi_data *dsi = to_dsi_data(dssdev); DSSDBG("dsi_display_disable\n"); + dsi_bus_lock(dsi); dsi_display_ulps_disable(dsi, true, false); + dsi_bus_unlock(dsi); }
static int dsi_enable_te(struct dsi_data *dsi, bool enable) @@ -4876,7 +4950,7 @@ static const struct omap_dss_device_ops dsi_ops = { .enable_video_output = dsi_enable_video_output, .disable_video_output = dsi_disable_video_output,
- .update = dsi_update, + .update = dsi_update_all, }, };
@@ -4974,14 +5048,18 @@ int omap_dsi_host_attach(struct mipi_dsi_host *host, return -EBUSY; }
+ dsi_bus_lock(dsi); + atomic_set(&dsi->do_ext_te_update, 0);
if (client->mode_flags & MIPI_DSI_MODE_VIDEO) { dsi->mode = OMAP_DSS_DSI_VIDEO_MODE; } else { r = omap_dsi_register_te_irq(dsi, client); - if (r) + if (r) { + dsi_bus_unlock(dsi); return r; + }
dsi->mode = OMAP_DSS_DSI_CMD_MODE; } @@ -4995,6 +5073,7 @@ int omap_dsi_host_attach(struct mipi_dsi_host *host, dsi->ulps_auto_idle = !!(client->mode_flags & MIPI_DSI_MODE_ULPS_IDLE); dsi_set_ulps_auto(dsi, true);
+ dsi_bus_unlock(dsi); return 0; }
diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h index 74cf0371b8bb..21601af29ee4 100644 --- a/drivers/gpu/drm/omapdrm/dss/omapdss.h +++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h @@ -287,13 +287,12 @@ struct omapdss_hdmi_ops { };
struct omapdss_dsi_ops { - /* bus configuration */ + int (*update)(struct omap_dss_device *dssdev); + + /* legacy API used by omapdss panels */ int (*set_config)(struct omap_dss_device *dssdev, const struct omap_dss_dsi_config *cfg);
- int (*update)(struct omap_dss_device *dssdev, int channel, - void (*callback)(int, void *), void *data); - int (*enable_video_output)(struct omap_dss_device *dssdev, int channel); void (*disable_video_output)(struct omap_dss_device *dssdev, int channel); diff --git a/drivers/gpu/drm/omapdrm/omap_crtc.c b/drivers/gpu/drm/omapdrm/omap_crtc.c index 8b469eaa5005..a8d0543d1296 100644 --- a/drivers/gpu/drm/omapdrm/omap_crtc.c +++ b/drivers/gpu/drm/omapdrm/omap_crtc.c @@ -362,10 +362,8 @@ static void omap_crtc_manual_display_update(struct work_struct *data) { struct omap_crtc *omap_crtc = container_of(data, struct omap_crtc, update_work.work); - struct drm_display_mode *mode = &omap_crtc->pipe->crtc->mode; - struct omap_dss_device *dssdev = omap_crtc->pipe->output->next; + struct omap_dss_device *dssdev = omap_crtc->pipe->output; struct drm_device *dev = omap_crtc->base.dev; - const struct omap_dss_driver *dssdrv; int ret;
if (!dssdev) { @@ -373,13 +371,12 @@ static void omap_crtc_manual_display_update(struct work_struct *data) return; }
- dssdrv = dssdev->driver; - if (!dssdrv || !dssdrv->update) { - dev_err_once(dev->dev, "missing or incorrect dssdrv!"); + if (dssdev->type != OMAP_DISPLAY_TYPE_DSI || !dssdev->ops->dsi.update) { + dev_err_once(dev->dev, "no DSI update callback found!"); return; }
- ret = dssdrv->update(dssdev, 0, 0, mode->hdisplay, mode->vdisplay); + ret = dssdev->ops->dsi.update(dssdev); if (ret < 0) { spin_lock_irq(&dev->event_lock); omap_crtc->pending = false;