On Mon, Sep 26, 2011 at 18:31:48, Hans Verkuil wrote:
> On Monday, September 19, 2011 07:35:27 Manjunath Hadli wrote:
> > This patch implements the core additions to the display driver, mainly
> > controlling the VENC and other encoders for dm365.
> > This patch also includes addition of amplifier subdevice to the vpbe
> > driver and interfacing with venc subdevice.
> >
> > Signed-off-by: Manjunath Hadli <[email protected]>
> > ---
> > drivers/media/video/davinci/vpbe.c | 55
> > ++++++++++++++++++++++++++++++++++--
> > include/media/davinci/vpbe.h | 16 ++++++++++
> > 2 files changed, 68 insertions(+), 3 deletions(-)
> >
> > diff --git a/drivers/media/video/davinci/vpbe.c
> > b/drivers/media/video/davinci/vpbe.c
> > index d773d30..21a8645 100644
> > --- a/drivers/media/video/davinci/vpbe.c
> > +++ b/drivers/media/video/davinci/vpbe.c
> > @@ -141,11 +141,12 @@ static int vpbe_enum_outputs(struct vpbe_device
> > *vpbe_dev,
> > return 0;
> > }
> >
> > -static int vpbe_get_mode_info(struct vpbe_device *vpbe_dev, char
> > *mode)
Hans,
> > +static int vpbe_get_mode_info(struct vpbe_device *vpbe_dev, char *mode,
> > + int output_index)
> > {
> > struct vpbe_config *cfg = vpbe_dev->cfg;
> > struct vpbe_enc_mode_info var;
> > - int curr_output = vpbe_dev->current_out_index;
> > + int curr_output = output_index;
> > int i;
> >
> > if (NULL == mode)
> > @@ -245,6 +246,8 @@ static int vpbe_set_output(struct vpbe_device
> > *vpbe_dev, int index)
> > struct encoder_config_info *curr_enc_info =
> > vpbe_current_encoder_info(vpbe_dev);
> > struct vpbe_config *cfg = vpbe_dev->cfg;
> > + struct venc_platform_data *venc_device = vpbe_dev->venc_device;
> > + enum v4l2_mbus_pixelcode if_params;
> > int enc_out_index;
> > int sd_index;
> > int ret = 0;
> > @@ -274,6 +277,8 @@ static int vpbe_set_output(struct vpbe_device
> > *vpbe_dev, int index)
> > goto out;
> > }
> >
> > + if_params = cfg->outputs[index].if_params;
> > + venc_device->setup_if_config(if_params);
> > if (ret)
> > goto out;
> > }
> > @@ -293,7 +298,7 @@ static int vpbe_set_output(struct vpbe_device
> > *vpbe_dev, int index)
> > * encoder.
> > */
> > ret = vpbe_get_mode_info(vpbe_dev,
> > - cfg->outputs[index].default_mode);
> > + cfg->outputs[index].default_mode, index);
> > if (!ret) {
> > struct osd_state *osd_device = vpbe_dev->osd_device;
> >
> > @@ -367,6 +372,11 @@ static int vpbe_s_dv_preset(struct vpbe_device
> > *vpbe_dev,
> >
> > ret = v4l2_subdev_call(vpbe_dev->encoders[sd_index], video,
> > s_dv_preset, dv_preset);
> > + if (!ret && (vpbe_dev->amp != NULL)) {
> > + /* Call amplifier subdevice */
> > + ret = v4l2_subdev_call(vpbe_dev->amp, video,
> > + s_dv_preset, dv_preset);
> > + }
> > /* set the lcd controller output for the given mode */
> > if (!ret) {
> > struct osd_state *osd_device = vpbe_dev->osd_device; @@ -566,6
> > +576,8 @@ static int platform_device_get(struct device *dev, void
> > *data)
> >
> > if (strcmp("vpbe-osd", pdev->name) == 0)
> > vpbe_dev->osd_device = platform_get_drvdata(pdev);
> > + if (strcmp("vpbe-venc", pdev->name) == 0)
> > + vpbe_dev->venc_device = dev_get_platdata(&pdev->dev);
> >
> > return 0;
> > }
> > @@ -584,6 +596,7 @@ static int platform_device_get(struct device *dev,
> > void *data) static int vpbe_initialize(struct device *dev, struct
> > vpbe_device *vpbe_dev) {
> > struct encoder_config_info *enc_info;
> > + struct amp_config_info *amp_info;
> > struct v4l2_subdev **enc_subdev;
> > struct osd_state *osd_device;
> > struct i2c_adapter *i2c_adap;
> > @@ -704,6 +717,39 @@ static int vpbe_initialize(struct device *dev, struct
> > vpbe_device *vpbe_dev)
> > v4l2_warn(&vpbe_dev->v4l2_dev, "non-i2c encoders"
> > " currently not supported");
> > }
> > + /* Add amplifier subdevice for dm365 */
> > + if ((strcmp(vpbe_dev->cfg->module_name, "dm365-vpbe-display") == 0) &&
> > + vpbe_dev->cfg->amp != NULL) {
> > + vpbe_dev->amp = kmalloc(sizeof(struct v4l2_subdev *),
> > + GFP_KERNEL);
>
> Huh? Why alloc a struct v4l2_subdev pointer here?
>
> > + if (vpbe_dev->amp == NULL) {
> > + v4l2_err(&vpbe_dev->v4l2_dev,
> > + "unable to allocate memory for sub device");
> > + ret = -ENOMEM;
> > + goto vpbe_fail_v4l2_device;
> > + }
> > + amp_info = vpbe_dev->cfg->amp;
> > + if (amp_info->is_i2c) {
> > + vpbe_dev->amp = v4l2_i2c_new_subdev_board(
> > + &vpbe_dev->v4l2_dev, i2c_adap,
> > + &_info->board_info, NULL);
>
> Especially since it is overwritten here! And so causes a memory leak.
> The kmalloc above (and the kfree below) feels like old code that should have
> been removed.
Thank you Hans. It was old code to be removed. Good catch. This piece of code
is now removed and tested.
>
> > + if (!vpbe_dev->amp) {
> > + v4l2_err(&vpbe_dev->v4l2_dev,
> > + "amplifier %s failed to register",
> > + amp_info->module_name);
> > + ret = -ENODEV;
> > + goto vpbe_fail_amp_register;
> > + }
> > + v4l2_info(&vpbe_dev->v4l2_dev,
> > + "v4l2 sub device %s registered\n",
> > + amp_info->module_name);
> > + } else {
> > + vpbe_dev->amp = NULL;
> > + v4l2_warn(&vpbe_dev->v4l2_dev, "non-i2c amplifiers"
> > + " currently not supported");
> > + }
> > + } else
> > + vpbe_dev->amp = NULL;
> >
> > /* set the current encoder and output to that of venc by default */
> > vpbe_dev->current_sd_index = 0;
> > @@ -731,6 +777,8 @@ static int vpbe_initialize(struct device *dev, struct
> > vpbe_device *vpbe_dev)
> > /* TBD handling of bootargs for default output and mode */
> > return 0;
> >
> > +vpbe_fail_amp_register:
> > + kfree(vpbe_dev->amp);
> > vpbe_fail_sd_register:
> > kfree(vpbe_dev->encoders);
> > vpbe_fail_v4l2_device:
> > @@ -757,6 +805,7 @@ static void vpbe_deinitialize(struct device *dev,
> > struct vpbe_device *vpbe_dev)
> > if (strcmp(vpbe_dev->cfg->module_name, "dm644x-vpbe-display") != 0)
> > clk_put(vpbe_dev->dac_clk);
> >
> > + kfree(vpbe_dev->amp);
> > kfree(vpbe_dev->encoders);
> > vpbe_dev->initialized = 0;
> > /* disable vpss clocks */
> > diff --git a/include/media/davinci/vpbe.h
> > b/include/media/davinci/vpbe.h index 8b11fb0..8bc1b3c 100644
> > --- a/include/media/davinci/vpbe.h
> > +++ b/include/media/davinci/vpbe.h
> > @@ -63,6 +63,7 @@ struct vpbe_output {
> > * output basis. If per mode is needed, we may have to move this to
> > * mode_info structure
> > */
> > + enum v4l2_mbus_pixelcode if_params;
> > };
> >
> > /* encoder configuration info */
> > @@ -74,6 +75,15 @@ struct encoder_config_info {
> > struct i2c_board_info board_info;
> > };
> >
> > +/*amplifier configuration info */
> > +struct amp_config_info {
> > + char module_name[32];
> > + /* Is this an i2c device ? */
> > + unsigned int is_i2c:1;
> > + /* i2c subdevice board info */
> > + struct i2c_board_info board_info;
> > +};
> > +
> > /* structure for defining vpbe display subsystem components */
> > struct vpbe_config {
> > char module_name[32];
> > @@ -84,6 +94,8 @@ struct vpbe_config {
> > /* external encoder information goes here */
> > int num_ext_encoders;
> > struct encoder_config_info *ext_encoders;
> > + /* amplifier information goes here */
> > + struct amp_config_info *amp;
> > int num_outputs;
> > /* Order is venc outputs followed by LCD and then external encoders */
> > struct vpbe_output *outputs;
> > @@ -158,6 +170,8 @@ struct vpbe_device {
> > struct v4l2_subdev **encoders;
> > /* current encoder index */
> > int current_sd_index;
> > + /* external amplifier v4l2 subdevice */
> > + struct v4l2_subdev *amp;
> > struct mutex lock;
> > /* device initialized */
> > int initialized;
> > @@ -165,6 +179,8 @@ struct vpbe_device {
> > struct clk *dac_clk;
> > /* osd_device pointer */
> > struct osd_state *osd_device;
> > + /* venc device pointer */
> > + struct venc_platform_data *venc_device;
> > /*
> > * fields below are accessed by users of vpbe_device. Not the
> > * ones above
> >
>
> Regards,
>
> Hans
>
Rgds,
Manju
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