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Message-ID: <58842E56.2000405@rock-chips.com>
Date: Sun, 22 Jan 2017 12:00:22 +0800
From: Chris Zhong <zyw@...k-chips.com>
To: John Keeping <john@...anate.com>,
Mark Yao <mark.yao@...k-chips.com>
Cc: dri-devel@...ts.freedesktop.org,
linux-arm-kernel@...ts.infradead.org,
linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 03/26] drm/rockchip: dw-mipi-dsi: pass mode in where
needed
Hi John
Reviewed-by: Chris Zhong <zyw@...k-chips.com>
On 01/22/2017 12:31 AM, John Keeping wrote:
> This shows that we only use the mode from the enable function and
> prepares us to remove the "mode" field and the mode_set hook in the next
> commit.
>
> Signed-off-by: John Keeping <john@...anate.com>
> ---
> New in v2
> ---
> drivers/gpu/drm/rockchip/dw-mipi-dsi.c | 41 ++++++++++++++++++----------------
> 1 file changed, 22 insertions(+), 19 deletions(-)
>
> diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
> index bbd992299f73..cdbd25087e83 100644
> --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
> +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
> @@ -330,11 +330,11 @@ static int max_mbps_to_testdin(unsigned int max_mbps)
> * The controller should generate 2 frames before
> * preparing the peripheral.
> */
> -static void dw_mipi_dsi_wait_for_two_frames(struct dw_mipi_dsi *dsi)
> +static void dw_mipi_dsi_wait_for_two_frames(struct drm_display_mode *mode)
> {
> int refresh, two_frames;
>
> - refresh = drm_mode_vrefresh(dsi->mode);
> + refresh = drm_mode_vrefresh(mode);
> two_frames = DIV_ROUND_UP(MSEC_PER_SEC, refresh) * 2;
> msleep(two_frames);
> }
> @@ -459,7 +459,8 @@ static int dw_mipi_dsi_phy_init(struct dw_mipi_dsi *dsi)
> return ret;
> }
>
> -static int dw_mipi_dsi_get_lane_bps(struct dw_mipi_dsi *dsi)
> +static int dw_mipi_dsi_get_lane_bps(struct dw_mipi_dsi *dsi,
> + struct drm_display_mode *mode)
> {
> unsigned int i, pre;
> unsigned long mpclk, pllref, tmp;
> @@ -474,7 +475,7 @@ static int dw_mipi_dsi_get_lane_bps(struct dw_mipi_dsi *dsi)
> return bpp;
> }
>
> - mpclk = DIV_ROUND_UP(dsi->mode->clock, MSEC_PER_SEC);
> + mpclk = DIV_ROUND_UP(mode->clock, MSEC_PER_SEC);
> if (mpclk) {
> /* take 1 / 0.9, since mbps must big than bandwidth of RGB */
> tmp = mpclk * (bpp / dsi->lanes) * 10 / 9;
> @@ -742,43 +743,44 @@ static void dw_mipi_dsi_command_mode_config(struct dw_mipi_dsi *dsi)
>
> /* Get lane byte clock cycles. */
> static u32 dw_mipi_dsi_get_hcomponent_lbcc(struct dw_mipi_dsi *dsi,
> + struct drm_display_mode *mode,
> u32 hcomponent)
> {
> u32 frac, lbcc;
>
> lbcc = hcomponent * dsi->lane_mbps * MSEC_PER_SEC / 8;
>
> - frac = lbcc % dsi->mode->clock;
> - lbcc = lbcc / dsi->mode->clock;
> + frac = lbcc % mode->clock;
> + lbcc = lbcc / mode->clock;
> if (frac)
> lbcc++;
>
> return lbcc;
> }
>
> -static void dw_mipi_dsi_line_timer_config(struct dw_mipi_dsi *dsi)
> +static void dw_mipi_dsi_line_timer_config(struct dw_mipi_dsi *dsi,
> + struct drm_display_mode *mode)
> {
> u32 htotal, hsa, hbp, lbcc;
> - struct drm_display_mode *mode = dsi->mode;
>
> htotal = mode->htotal;
> hsa = mode->hsync_end - mode->hsync_start;
> hbp = mode->htotal - mode->hsync_end;
>
> - lbcc = dw_mipi_dsi_get_hcomponent_lbcc(dsi, htotal);
> + lbcc = dw_mipi_dsi_get_hcomponent_lbcc(dsi, mode, htotal);
> dsi_write(dsi, DSI_VID_HLINE_TIME, lbcc);
>
> - lbcc = dw_mipi_dsi_get_hcomponent_lbcc(dsi, hsa);
> + lbcc = dw_mipi_dsi_get_hcomponent_lbcc(dsi, mode, hsa);
> dsi_write(dsi, DSI_VID_HSA_TIME, lbcc);
>
> - lbcc = dw_mipi_dsi_get_hcomponent_lbcc(dsi, hbp);
> + lbcc = dw_mipi_dsi_get_hcomponent_lbcc(dsi, mode, hbp);
> dsi_write(dsi, DSI_VID_HBP_TIME, lbcc);
> }
>
> -static void dw_mipi_dsi_vertical_timing_config(struct dw_mipi_dsi *dsi)
> +static void dw_mipi_dsi_vertical_timing_config(struct dw_mipi_dsi *dsi,
> + struct drm_display_mode *mode)
> {
> u32 vactive, vsa, vfp, vbp;
> - struct drm_display_mode *mode = dsi->mode;
>
> vactive = mode->vdisplay;
> vsa = mode->vsync_end - mode->vsync_start;
> @@ -852,11 +854,12 @@ static void dw_mipi_dsi_encoder_disable(struct drm_encoder *encoder)
> static void dw_mipi_dsi_encoder_enable(struct drm_encoder *encoder)
> {
> struct dw_mipi_dsi *dsi = encoder_to_dsi(encoder);
> + struct drm_display_mode *mode = dsi->mode;
> int mux = drm_of_encoder_active_endpoint_id(dsi->dev->of_node, encoder);
> u32 val;
> int ret;
>
> - ret = dw_mipi_dsi_get_lane_bps(dsi);
> + ret = dw_mipi_dsi_get_lane_bps(dsi, mode);
> if (ret < 0)
> return;
>
> @@ -866,13 +869,13 @@ static void dw_mipi_dsi_encoder_enable(struct drm_encoder *encoder)
> }
>
> dw_mipi_dsi_init(dsi);
> - dw_mipi_dsi_dpi_config(dsi, dsi->mode);
> + dw_mipi_dsi_dpi_config(dsi, mode);
> dw_mipi_dsi_packet_handler_config(dsi);
> dw_mipi_dsi_video_mode_config(dsi);
> - dw_mipi_dsi_video_packet_config(dsi, dsi->mode);
> + dw_mipi_dsi_video_packet_config(dsi, mode);
> dw_mipi_dsi_command_mode_config(dsi);
> - dw_mipi_dsi_line_timer_config(dsi);
> - dw_mipi_dsi_vertical_timing_config(dsi);
> + dw_mipi_dsi_line_timer_config(dsi, mode);
> + dw_mipi_dsi_vertical_timing_config(dsi, mode);
> dw_mipi_dsi_dphy_timing_config(dsi);
> dw_mipi_dsi_dphy_interface_config(dsi);
> dw_mipi_dsi_clear_err(dsi);
> @@ -880,7 +883,7 @@ static void dw_mipi_dsi_encoder_enable(struct drm_encoder *encoder)
> dev_err(dsi->dev, "failed to prepare panel\n");
>
> dw_mipi_dsi_phy_init(dsi);
> - dw_mipi_dsi_wait_for_two_frames(dsi);
> + dw_mipi_dsi_wait_for_two_frames(mode);
>
> dw_mipi_dsi_set_mode(dsi, DW_MIPI_DSI_VID_MODE);
> drm_panel_enable(dsi->panel);
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