This moves the bus locking into the host driver and unexports the custom API in preparation for drm_panel support.
Signed-off-by: Sebastian Reichel sebastian.reichel@collabora.com --- .../gpu/drm/omapdrm/displays/panel-dsi-cm.c | 46 +------------------ drivers/gpu/drm/omapdrm/dss/dsi.c | 33 ++++++++----- drivers/gpu/drm/omapdrm/dss/omapdss.h | 3 -- 3 files changed, 23 insertions(+), 59 deletions(-)
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c index 787f953168ec..36101d9ba84d 100644 --- a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c +++ b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c @@ -298,7 +298,6 @@ static int dsicm_wake_up(struct panel_drv_data *ddata) static int dsicm_bl_update_status(struct backlight_device *dev) { struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev); - struct omap_dss_device *src = ddata->src; int r = 0; int level;
@@ -313,15 +312,11 @@ static int dsicm_bl_update_status(struct backlight_device *dev) mutex_lock(&ddata->lock);
if (ddata->enabled) { - src->ops->dsi.bus_lock(src); - r = dsicm_wake_up(ddata); if (!r) { r = dsicm_dcs_write_1(ddata, MIPI_DCS_SET_DISPLAY_BRIGHTNESS, level); } - - src->ops->dsi.bus_unlock(src); }
mutex_unlock(&ddata->lock); @@ -347,21 +342,16 @@ static ssize_t dsicm_num_errors_show(struct device *dev, struct device_attribute *attr, char *buf) { struct panel_drv_data *ddata = dev_get_drvdata(dev); - struct omap_dss_device *src = ddata->src; u8 errors = 0; int r;
mutex_lock(&ddata->lock);
if (ddata->enabled) { - src->ops->dsi.bus_lock(src); - r = dsicm_wake_up(ddata); if (!r) r = dsicm_dcs_read_1(ddata, DCS_READ_NUM_ERRORS, &errors); - - src->ops->dsi.bus_unlock(src); } else { r = -ENODEV; } @@ -378,20 +368,15 @@ static ssize_t dsicm_hw_revision_show(struct device *dev, struct device_attribute *attr, char *buf) { struct panel_drv_data *ddata = dev_get_drvdata(dev); - struct omap_dss_device *src = ddata->src; u8 id1, id2, id3; int r;
mutex_lock(&ddata->lock);
if (ddata->enabled) { - src->ops->dsi.bus_lock(src); - r = dsicm_wake_up(ddata); if (!r) r = dsicm_get_id(ddata, &id1, &id2, &id3); - - src->ops->dsi.bus_unlock(src); } else { r = -ENODEV; } @@ -409,7 +394,6 @@ static ssize_t dsicm_store_ulps(struct device *dev, const char *buf, size_t count) { struct panel_drv_data *ddata = dev_get_drvdata(dev); - struct omap_dss_device *src = ddata->src; unsigned long t; int r;
@@ -420,14 +404,10 @@ static ssize_t dsicm_store_ulps(struct device *dev, mutex_lock(&ddata->lock);
if (ddata->enabled) { - src->ops->dsi.bus_lock(src); - if (t) r = dsicm_enter_ulps(ddata); else r = dsicm_wake_up(ddata); - - src->ops->dsi.bus_unlock(src); }
mutex_unlock(&ddata->lock); @@ -457,7 +437,6 @@ static ssize_t dsicm_store_ulps_timeout(struct device *dev, const char *buf, size_t count) { struct panel_drv_data *ddata = dev_get_drvdata(dev); - struct omap_dss_device *src = ddata->src; unsigned long t; int r;
@@ -470,9 +449,7 @@ static ssize_t dsicm_store_ulps_timeout(struct device *dev,
if (ddata->enabled) { /* dsicm_wake_up will restart the timer */ - src->ops->dsi.bus_lock(src); r = dsicm_wake_up(ddata); - src->ops->dsi.bus_unlock(src); }
mutex_unlock(&ddata->lock); @@ -673,17 +650,11 @@ static void dsicm_disconnect(struct omap_dss_device *src, static void dsicm_enable(struct omap_dss_device *dssdev) { struct panel_drv_data *ddata = to_panel_data(dssdev); - struct omap_dss_device *src = ddata->src; int r;
mutex_lock(&ddata->lock);
- src->ops->dsi.bus_lock(src); - r = dsicm_power_on(ddata); - - src->ops->dsi.bus_unlock(src); - if (r) goto err;
@@ -700,7 +671,6 @@ static void dsicm_enable(struct omap_dss_device *dssdev) static void dsicm_disable(struct omap_dss_device *dssdev) { struct panel_drv_data *ddata = to_panel_data(dssdev); - struct omap_dss_device *src = ddata->src; int r;
dsicm_bl_power(ddata, false); @@ -709,24 +679,19 @@ static void dsicm_disable(struct omap_dss_device *dssdev)
dsicm_cancel_ulps_work(ddata);
- src->ops->dsi.bus_lock(src); - r = dsicm_wake_up(ddata); if (!r) dsicm_power_off(ddata);
- src->ops->dsi.bus_unlock(src); - mutex_unlock(&ddata->lock); }
static void dsicm_framedone_cb(int err, void *data) { struct panel_drv_data *ddata = data; - struct omap_dss_device *src = ddata->src;
dev_dbg(&ddata->dsi->dev, "framedone, err %d\n", err); - src->ops->dsi.bus_unlock(src); + mutex_unlock(&ddata->lock); }
static int dsicm_update(struct omap_dss_device *dssdev, @@ -739,7 +704,6 @@ static int dsicm_update(struct omap_dss_device *dssdev, dev_dbg(&ddata->dsi->dev, "update %d, %d, %d x %d\n", x, y, w, h);
mutex_lock(&ddata->lock); - src->ops->dsi.bus_lock(src);
r = dsicm_wake_up(ddata); if (r) @@ -761,11 +725,9 @@ static int dsicm_update(struct omap_dss_device *dssdev, if (r) goto err;
- /* note: no bus_unlock here. unlock is src framedone_cb */ - mutex_unlock(&ddata->lock); + /* note: no unlock here. unlock is src framedone_cb */ return 0; err: - src->ops->dsi.bus_unlock(src); mutex_unlock(&ddata->lock); return r; } @@ -791,7 +753,6 @@ static void dsicm_ulps_work(struct work_struct *work) struct panel_drv_data *ddata = container_of(work, struct panel_drv_data, ulps_work.work); struct omap_dss_device *dssdev = &ddata->dssdev; - struct omap_dss_device *src = ddata->src;
mutex_lock(&ddata->lock);
@@ -800,11 +761,8 @@ static void dsicm_ulps_work(struct work_struct *work) return; }
- src->ops->dsi.bus_lock(src); - dsicm_enter_ulps(ddata);
- src->ops->dsi.bus_unlock(src); mutex_unlock(&ddata->lock); }
diff --git a/drivers/gpu/drm/omapdrm/dss/dsi.c b/drivers/gpu/drm/omapdrm/dss/dsi.c index 8060009fbfb9..8387abea21a5 100644 --- a/drivers/gpu/drm/omapdrm/dss/dsi.c +++ b/drivers/gpu/drm/omapdrm/dss/dsi.c @@ -479,17 +479,13 @@ static inline u32 dsi_read_reg(struct dsi_data *dsi, const struct dsi_reg idx) return __raw_readl(base + idx.idx); }
-static void dsi_bus_lock(struct omap_dss_device *dssdev) +static void dsi_bus_lock(struct dsi_data *dsi) { - struct dsi_data *dsi = to_dsi_data(dssdev); - down(&dsi->bus_lock); }
-static void dsi_bus_unlock(struct omap_dss_device *dssdev) +static void dsi_bus_unlock(struct dsi_data *dsi) { - struct dsi_data *dsi = to_dsi_data(dssdev); - up(&dsi->bus_lock); }
@@ -3805,6 +3801,8 @@ static void dsi_handle_framedone(struct dsi_data *dsi, int error) REG_FLD_MOD(dsi, DSI_TIMING2, 1, 15, 15); /* LP_RX_TO */ }
+ dsi_bus_unlock(dsi); + dsi->framedone_callback(error, dsi->framedone_data);
if (!error) @@ -3864,6 +3862,8 @@ static int dsi_update(struct omap_dss_device *dssdev, int channel, { struct dsi_data *dsi = to_dsi_data(dssdev);
+ dsi_bus_lock(dsi); + dsi->update_channel = channel; dsi->framedone_callback = callback; dsi->framedone_data = data; @@ -4723,10 +4723,9 @@ static enum omap_channel dsi_get_channel(struct dsi_data *dsi) } }
-static ssize_t omap_dsi_host_transfer(struct mipi_dsi_host *host, - const struct mipi_dsi_msg *msg) +static ssize_t _omap_dsi_host_transfer(struct dsi_data *dsi, + const struct mipi_dsi_msg *msg) { - struct dsi_data *dsi = host_to_omap(host); struct omap_dss_device *dssdev = &dsi->output; int r;
@@ -4775,6 +4774,19 @@ static ssize_t omap_dsi_host_transfer(struct mipi_dsi_host *host, return 0; }
+static ssize_t omap_dsi_host_transfer(struct mipi_dsi_host *host, + const struct mipi_dsi_msg *msg) +{ + struct dsi_data *dsi = host_to_omap(host); + int r; + + dsi_bus_lock(dsi); + r = _omap_dsi_host_transfer(dsi, msg); + dsi_bus_unlock(dsi); + + return r; +} + static int dsi_get_clocks(struct dsi_data *dsi) { struct clk *clk; @@ -4808,9 +4820,6 @@ static const struct omap_dss_device_ops dsi_ops = { .enable = dsi_display_enable,
.dsi = { - .bus_lock = dsi_bus_lock, - .bus_unlock = dsi_bus_unlock, - .disable = dsi_display_disable,
.set_config = dsi_set_config, diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h b/drivers/gpu/drm/omapdrm/dss/omapdss.h index ca52b08c57db..2d6ab948a6dd 100644 --- a/drivers/gpu/drm/omapdrm/dss/omapdss.h +++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h @@ -297,9 +297,6 @@ struct omapdss_dsi_ops { int (*update)(struct omap_dss_device *dssdev, int channel, void (*callback)(int, void *), void *data);
- void (*bus_lock)(struct omap_dss_device *dssdev); - void (*bus_unlock)(struct omap_dss_device *dssdev); - int (*enable_video_output)(struct omap_dss_device *dssdev, int channel); void (*disable_video_output)(struct omap_dss_device *dssdev, int channel);