Message ID | 1415006021-29313-13-git-send-email-thierry.reding@gmail.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
On Mon, Nov 3, 2014 at 4:13 AM, Thierry Reding <thierry.reding@gmail.com> wrote: > From: Thierry Reding <treding@nvidia.com> > > Provide small convenience wrappers to query or set the pixel format used > by the interface. > > Signed-off-by: Thierry Reding <treding@nvidia.com> > --- > drivers/gpu/drm/drm_mipi_dsi.c | 42 ++++++++++++++++++++++++++++++++++++++++++ > include/drm/drm_mipi_dsi.h | 2 ++ > 2 files changed, 44 insertions(+) > > diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c > index da34469b9b98..226822a44457 100644 > --- a/drivers/gpu/drm/drm_mipi_dsi.c > +++ b/drivers/gpu/drm/drm_mipi_dsi.c > @@ -553,6 +553,27 @@ int mipi_dsi_dcs_get_power_mode(struct mipi_dsi_device *dsi, u8 *mode) > EXPORT_SYMBOL(mipi_dsi_dcs_get_power_mode); > > /** > + * mipi_dsi_dcs_get_pixel_format() - gets the pixel format for the RGB image > + * data used by the interface > + * @dsi: DSI peripheral device > + * @format: return location for the pixel format > + * > + * Return: 0 on success or a negative error code on failure. > + */ > +int mipi_dsi_dcs_get_pixel_format(struct mipi_dsi_device *dsi, u8 *format) > +{ > + ssize_t err; > + > + err = mipi_dsi_dcs_read(dsi, MIPI_DCS_GET_PIXEL_FORMAT, format, > + sizeof(*format)); > + if (err < 0) > + return err; This should probably return -ENODATA when err != sizeof(*format), like the previous patch did. It might be worth moving that logic into mipi_dsi_dcs_read, assuming we're not interested in partial data. Sean > + > + return 0; > +} > +EXPORT_SYMBOL(mipi_dsi_dcs_get_pixel_format); > + > +/** > * mipi_dsi_dcs_enter_sleep_mode() - disable all unnecessary blocks inside the > * display module except interface communication > * @dsi: DSI peripheral device > @@ -670,6 +691,27 @@ int mipi_dsi_dcs_set_tear_on(struct mipi_dsi_device *dsi, > } > EXPORT_SYMBOL(mipi_dsi_dcs_set_tear_on); > > +/** > + * mipi_dsi_dcs_set_pixel_format() - sets the pixel format for the RGB image > + * data used by the interface > + * @dsi: DSI peripheral device > + * @format: pixel format > + * > + * Return: 0 on success or a negative error code on failure. > + */ > +int mipi_dsi_dcs_set_pixel_format(struct mipi_dsi_device *dsi, u8 format) > +{ > + ssize_t err; > + > + err = mipi_dsi_dcs_write(dsi, MIPI_DCS_SET_PIXEL_FORMAT, &format, > + sizeof(format)); > + if (err < 0) > + return err; > + > + return 0; > +} > +EXPORT_SYMBOL(mipi_dsi_dcs_set_pixel_format); > + > static int mipi_dsi_drv_probe(struct device *dev) > { > struct mipi_dsi_driver *drv = to_mipi_dsi_driver(dev->driver); > diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h > index 4cbf8e658a3a..415d01f90086 100644 > --- a/include/drm/drm_mipi_dsi.h > +++ b/include/drm/drm_mipi_dsi.h > @@ -197,6 +197,7 @@ ssize_t mipi_dsi_dcs_read(struct mipi_dsi_device *dsi, u8 cmd, void *data, > int mipi_dsi_dcs_nop(struct mipi_dsi_device *dsi); > int mipi_dsi_dcs_soft_reset(struct mipi_dsi_device *dsi); > int mipi_dsi_dcs_get_power_mode(struct mipi_dsi_device *dsi, u8 *mode); > +int mipi_dsi_dcs_get_pixel_format(struct mipi_dsi_device *dsi, u8 *format); > int mipi_dsi_dcs_enter_sleep_mode(struct mipi_dsi_device *dsi); > int mipi_dsi_dcs_exit_sleep_mode(struct mipi_dsi_device *dsi); > int mipi_dsi_dcs_set_display_off(struct mipi_dsi_device *dsi); > @@ -204,6 +205,7 @@ int mipi_dsi_dcs_set_display_on(struct mipi_dsi_device *dsi); > int mipi_dsi_dcs_set_tear_off(struct mipi_dsi_device *dsi); > int mipi_dsi_dcs_set_tear_on(struct mipi_dsi_device *dsi, > enum mipi_dsi_dcs_tear_mode mode); > +int mipi_dsi_dcs_set_pixel_format(struct mipi_dsi_device *dsi, u8 format); > > /** > * struct mipi_dsi_driver - DSI driver > -- > 2.1.2 >
On Mon, Nov 03, 2014 at 12:10:29PM -0500, Sean Paul wrote: > On Mon, Nov 3, 2014 at 4:13 AM, Thierry Reding <thierry.reding@gmail.com> wrote: > > From: Thierry Reding <treding@nvidia.com> > > > > Provide small convenience wrappers to query or set the pixel format used > > by the interface. > > > > Signed-off-by: Thierry Reding <treding@nvidia.com> > > --- > > drivers/gpu/drm/drm_mipi_dsi.c | 42 ++++++++++++++++++++++++++++++++++++++++++ > > include/drm/drm_mipi_dsi.h | 2 ++ > > 2 files changed, 44 insertions(+) > > > > diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c > > index da34469b9b98..226822a44457 100644 > > --- a/drivers/gpu/drm/drm_mipi_dsi.c > > +++ b/drivers/gpu/drm/drm_mipi_dsi.c > > @@ -553,6 +553,27 @@ int mipi_dsi_dcs_get_power_mode(struct mipi_dsi_device *dsi, u8 *mode) > > EXPORT_SYMBOL(mipi_dsi_dcs_get_power_mode); > > > > /** > > + * mipi_dsi_dcs_get_pixel_format() - gets the pixel format for the RGB image > > + * data used by the interface > > + * @dsi: DSI peripheral device > > + * @format: return location for the pixel format > > + * > > + * Return: 0 on success or a negative error code on failure. > > + */ > > +int mipi_dsi_dcs_get_pixel_format(struct mipi_dsi_device *dsi, u8 *format) > > +{ > > + ssize_t err; > > + > > + err = mipi_dsi_dcs_read(dsi, MIPI_DCS_GET_PIXEL_FORMAT, format, > > + sizeof(*format)); > > + if (err < 0) > > + return err; > > This should probably return -ENODATA when err != sizeof(*format), like > the previous patch did. Done. > It might be worth moving that logic into mipi_dsi_dcs_read, assuming > we're not interested in partial data. Agreed. I think we can leave that for a subsequent refactoring once these function have matured a bit more and patterns appear. Thierry
diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c index da34469b9b98..226822a44457 100644 --- a/drivers/gpu/drm/drm_mipi_dsi.c +++ b/drivers/gpu/drm/drm_mipi_dsi.c @@ -553,6 +553,27 @@ int mipi_dsi_dcs_get_power_mode(struct mipi_dsi_device *dsi, u8 *mode) EXPORT_SYMBOL(mipi_dsi_dcs_get_power_mode); /** + * mipi_dsi_dcs_get_pixel_format() - gets the pixel format for the RGB image + * data used by the interface + * @dsi: DSI peripheral device + * @format: return location for the pixel format + * + * Return: 0 on success or a negative error code on failure. + */ +int mipi_dsi_dcs_get_pixel_format(struct mipi_dsi_device *dsi, u8 *format) +{ + ssize_t err; + + err = mipi_dsi_dcs_read(dsi, MIPI_DCS_GET_PIXEL_FORMAT, format, + sizeof(*format)); + if (err < 0) + return err; + + return 0; +} +EXPORT_SYMBOL(mipi_dsi_dcs_get_pixel_format); + +/** * mipi_dsi_dcs_enter_sleep_mode() - disable all unnecessary blocks inside the * display module except interface communication * @dsi: DSI peripheral device @@ -670,6 +691,27 @@ int mipi_dsi_dcs_set_tear_on(struct mipi_dsi_device *dsi, } EXPORT_SYMBOL(mipi_dsi_dcs_set_tear_on); +/** + * mipi_dsi_dcs_set_pixel_format() - sets the pixel format for the RGB image + * data used by the interface + * @dsi: DSI peripheral device + * @format: pixel format + * + * Return: 0 on success or a negative error code on failure. + */ +int mipi_dsi_dcs_set_pixel_format(struct mipi_dsi_device *dsi, u8 format) +{ + ssize_t err; + + err = mipi_dsi_dcs_write(dsi, MIPI_DCS_SET_PIXEL_FORMAT, &format, + sizeof(format)); + if (err < 0) + return err; + + return 0; +} +EXPORT_SYMBOL(mipi_dsi_dcs_set_pixel_format); + static int mipi_dsi_drv_probe(struct device *dev) { struct mipi_dsi_driver *drv = to_mipi_dsi_driver(dev->driver); diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h index 4cbf8e658a3a..415d01f90086 100644 --- a/include/drm/drm_mipi_dsi.h +++ b/include/drm/drm_mipi_dsi.h @@ -197,6 +197,7 @@ ssize_t mipi_dsi_dcs_read(struct mipi_dsi_device *dsi, u8 cmd, void *data, int mipi_dsi_dcs_nop(struct mipi_dsi_device *dsi); int mipi_dsi_dcs_soft_reset(struct mipi_dsi_device *dsi); int mipi_dsi_dcs_get_power_mode(struct mipi_dsi_device *dsi, u8 *mode); +int mipi_dsi_dcs_get_pixel_format(struct mipi_dsi_device *dsi, u8 *format); int mipi_dsi_dcs_enter_sleep_mode(struct mipi_dsi_device *dsi); int mipi_dsi_dcs_exit_sleep_mode(struct mipi_dsi_device *dsi); int mipi_dsi_dcs_set_display_off(struct mipi_dsi_device *dsi); @@ -204,6 +205,7 @@ int mipi_dsi_dcs_set_display_on(struct mipi_dsi_device *dsi); int mipi_dsi_dcs_set_tear_off(struct mipi_dsi_device *dsi); int mipi_dsi_dcs_set_tear_on(struct mipi_dsi_device *dsi, enum mipi_dsi_dcs_tear_mode mode); +int mipi_dsi_dcs_set_pixel_format(struct mipi_dsi_device *dsi, u8 format); /** * struct mipi_dsi_driver - DSI driver