[RESEND 3/6] drm/bridge: anx7625: use struct drm_edid more

[Robert Foss]

On Fri, May 10, 2024 at 3:26 PM Jani Nikula <jani.nikula at intel.com> wrote:
>
> Prefer struct drm_edid based functions over struct edid.
>
> Signed-off-by: Jani Nikula <jani.nikula at intel.com>
>
> ---
>
> Cc: Andrzej Hajda <andrzej.hajda at intel.com>
> Cc: Neil Armstrong <neil.armstrong at linaro.org>
> Cc: Robert Foss <rfoss at kernel.org>
> Cc: Laurent Pinchart <Laurent.pinchart at ideasonboard.com>
> Cc: Jonas Karlman <jonas at kwiboo.se>
> Cc: Jernej Skrabec <jernej.skrabec at gmail.com>
> ---
>  drivers/gpu/drm/bridge/analogix/anx7625.c | 26 +++++++++++++++--------
>  drivers/gpu/drm/bridge/analogix/anx7625.h | 10 ++-------
>  2 files changed, 19 insertions(+), 17 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c
> index 59e9ad349969..d19975c5e5e5 100644
> --- a/drivers/gpu/drm/bridge/analogix/anx7625.c
> +++ b/drivers/gpu/drm/bridge/analogix/anx7625.c
> @@ -464,9 +464,11 @@ static int anx7625_odfc_config(struct anx7625_data *ctx,
>   */
>  static int anx7625_set_k_value(struct anx7625_data *ctx)
>  {
> -       struct edid *edid = (struct edid *)ctx->slimport_edid_p.edid_raw_data;
> +       struct drm_edid_product_id id;
>
> -       if (edid->mfg_id[0] == IVO_MID0 && edid->mfg_id[1] == IVO_MID1)
> +       drm_edid_get_product_id(ctx->cached_drm_edid, &id);
> +
> +       if (be16_to_cpu(id.manufacturer_name) == IVO_MID)
>                 return anx7625_reg_write(ctx, ctx->i2c.rx_p1_client,
>                                          MIPI_DIGITAL_ADJ_1, 0x3B);
>
> @@ -1526,7 +1528,8 @@ static int anx7625_wait_hpd_asserted(struct drm_dp_aux *aux,
>
>  static void anx7625_remove_edid(struct anx7625_data *ctx)
>  {
> -       ctx->slimport_edid_p.edid_block_num = -1;
> +       drm_edid_free(ctx->cached_drm_edid);
> +       ctx->cached_drm_edid = NULL;
>  }
>
>  static void anx7625_dp_adjust_swing(struct anx7625_data *ctx)
> @@ -1787,27 +1790,32 @@ static ssize_t anx7625_aux_transfer(struct drm_dp_aux *aux,
>  static const struct drm_edid *anx7625_edid_read(struct anx7625_data *ctx)
>  {
>         struct device *dev = ctx->dev;
> -       struct s_edid_data *p_edid = &ctx->slimport_edid_p;
> +       u8 *edid_buf;
>         int edid_num;
>
> -       if (ctx->slimport_edid_p.edid_block_num > 0)
> +       if (ctx->cached_drm_edid)
>                 goto out;
>
> +       edid_buf = kmalloc(FOUR_BLOCK_SIZE, GFP_KERNEL);
> +       if (!edid_buf)
> +               return NULL;
> +
>         pm_runtime_get_sync(dev);
>         _anx7625_hpd_polling(ctx, 5000 * 100);
> -       edid_num = sp_tx_edid_read(ctx, p_edid->edid_raw_data);
> +       edid_num = sp_tx_edid_read(ctx, edid_buf);
>         pm_runtime_put_sync(dev);
>
>         if (edid_num < 1) {
>                 DRM_DEV_ERROR(dev, "Fail to read EDID: %d\n", edid_num);
> +               kfree(edid_buf);
>                 return NULL;
>         }
>
> -       p_edid->edid_block_num = edid_num;
> +       ctx->cached_drm_edid = drm_edid_alloc(edid_buf, FOUR_BLOCK_SIZE);
> +       kfree(edid_buf);
>
>  out:
> -       return drm_edid_alloc(ctx->slimport_edid_p.edid_raw_data,
> -                             FOUR_BLOCK_SIZE);
> +       return drm_edid_dup(ctx->cached_drm_edid);
>  }
>
>  static enum drm_connector_status anx7625_sink_detect(struct anx7625_data *ctx)
> diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.h b/drivers/gpu/drm/bridge/analogix/anx7625.h
> index 39ed35d33836..eb5580f1ab2f 100644
> --- a/drivers/gpu/drm/bridge/analogix/anx7625.h
> +++ b/drivers/gpu/drm/bridge/analogix/anx7625.h
> @@ -286,8 +286,7 @@
>
>  #define  MIPI_LANE_CTRL_10               0x0F
>  #define  MIPI_DIGITAL_ADJ_1     0x1B
> -#define  IVO_MID0               0x26
> -#define  IVO_MID1               0xCF
> +#define  IVO_MID                0x26CF
>
>  #define  MIPI_PLL_M_NUM_23_16   0x1E
>  #define  MIPI_PLL_M_NUM_15_8    0x1F
> @@ -417,11 +416,6 @@ enum audio_wd_len {
>  #define EDID_TRY_CNT   3
>  #define SUPPORT_PIXEL_CLOCK    300000
>
> -struct s_edid_data {
> -       int edid_block_num;
> -       u8 edid_raw_data[FOUR_BLOCK_SIZE];
> -};
> -
>  /***************** Display End *****************/
>
>  #define MAX_LANES_SUPPORT      4
> @@ -466,7 +460,7 @@ struct anx7625_data {
>         struct anx7625_i2c_client i2c;
>         struct i2c_client *last_client;
>         struct timer_list hdcp_timer;
> -       struct s_edid_data slimport_edid_p;
> +       const struct drm_edid *cached_drm_edid;
>         struct device *codec_dev;
>         hdmi_codec_plugged_cb plugged_cb;
>         struct work_struct work;
> --
> 2.39.2
>

Reviewed-by: Robert Foss <rfoss at kernel.org>