[PATCH v4 5/8] drm/mediatek: hdmi: add v2 support
CK Hu (胡俊光)
ck.hu at mediatek.com
Mon Jun 12 19:52:18 PDT 2023
Hi, Guillaume:
On Mon, 2023-05-29 at 16:31 +0200, Guillaume Ranquet wrote:
>
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> Adds hdmi and hdmi-ddc support for v2 IP.
>
> Signed-off-by: Guillaume Ranquet <granquet at baylibre.com>
> ---
>
[snip]
> +
> +static unsigned char vddc_read(struct mtk_hdmi_ddc *ddc, unsigned
> int u4_clk_div,
> + unsigned char uc_dev, unsigned int u4_addr,
Remove the type style in naming,
u4_addr => addr
Regards,
CK
> + enum sif_bit_t_hdmi uc_addr_type,
> + unsigned char *puc_value, unsigned int u4_count)
> +{
> +unsigned int u4_read_count = 0;
> +unsigned char uc_return_value = 0;
> +
> +if (!puc_value || !u4_count || !u4_clk_div ||
> + uc_addr_type > SIF_16_BIT_HDMI ||
> + (uc_addr_type == SIF_8_BIT_HDMI && u4_addr > 255) ||
> + (uc_addr_type == SIF_16_BIT_HDMI && u4_addr > 65535)) {
> +return 0;
> +}
> +
> +if (uc_addr_type == SIF_8_BIT_HDMI)
> +u4_read_count = 255 - u4_addr + 1;
> +else if (uc_addr_type == SIF_16_BIT_HDMI)
> +u4_read_count = 65535 - u4_addr + 1;
> +
> +u4_read_count = (u4_read_count > u4_count) ? u4_count :
> u4_read_count;
> +uc_return_value = ddcm_read_hdmi(ddc, u4_clk_div, uc_dev, u4_addr,
> + uc_addr_type, puc_value, u4_read_count);
> +return uc_return_value;
> +}
> +
>
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