[PATCH v2 24/26] drm/rockchip: dw-mipi-dsi: support non-burst modes
Chris Zhong
zyw at rock-chips.com
Sun Jan 22 22:11:13 PST 2017
Reviewed-by: Chris Zhong <zyw at rock-chips.com>
On 01/22/2017 12:31 AM, John Keeping wrote:
> Signed-off-by: John Keeping <john at metanate.com>
> ---
> Unchanged in v2
> ---
> drivers/gpu/drm/rockchip/dw-mipi-dsi.c | 16 +++++++++-------
> 1 file changed, 9 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
> index 2dafb17e31d2..881bb0c62ca5 100644
> --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
> +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
> @@ -82,6 +82,7 @@
> #define FRAME_BTA_ACK BIT(14)
> #define ENABLE_LOW_POWER (0x3f << 8)
> #define ENABLE_LOW_POWER_MASK (0x3f << 8)
> +#define VID_MODE_TYPE_NON_BURST_SYNC_EVENTS 0x1
> #define VID_MODE_TYPE_BURST_SYNC_PULSES 0x2
> #define VID_MODE_TYPE_MASK 0x3
>
> @@ -286,6 +287,7 @@ struct dw_mipi_dsi {
> u32 format;
> u16 input_div;
> u16 feedback_div;
> + unsigned long mode_flags;
>
> const struct dw_mipi_dsi_plat_data *pdata;
> };
> @@ -548,15 +550,10 @@ static int dw_mipi_dsi_host_attach(struct mipi_dsi_host *host,
> return -EINVAL;
> }
>
> - if (!(device->mode_flags & MIPI_DSI_MODE_VIDEO_BURST) ||
> - !(device->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE)) {
> - dev_err(dsi->dev, "device mode is unsupported\n");
> - return -EINVAL;
> - }
> -
> dsi->lanes = device->lanes;
> dsi->channel = device->channel;
> dsi->format = device->format;
> + dsi->mode_flags = device->mode_flags;
> dsi->panel = of_drm_find_panel(device->dev.of_node);
> if (dsi->panel)
> return drm_panel_attach(dsi->panel, &dsi->connector);
> @@ -713,7 +710,12 @@ static void dw_mipi_dsi_video_mode_config(struct dw_mipi_dsi *dsi)
> {
> u32 val;
>
> - val = VID_MODE_TYPE_BURST_SYNC_PULSES | ENABLE_LOW_POWER;
> + val = ENABLE_LOW_POWER;
> +
> + if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_BURST)
> + val |= VID_MODE_TYPE_BURST_SYNC_PULSES;
> + else if (!(dsi->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE))
> + val |= VID_MODE_TYPE_NON_BURST_SYNC_EVENTS;
>
> dsi_write(dsi, DSI_VID_MODE_CFG, val);
> }
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