Re: [PATCH v3 3/5] drm/rockchip/dsi: remove mode_valid function
From: Chris Zhong
Date: Sat Feb 04 2017 - 22:43:38 EST
On 02/02/2017 02:12 AM, Sean Paul wrote:
On Tue, Jan 24, 2017 at 10:27:27AM +0800, Chris Zhong wrote:
Hi Sean
On 01/24/2017 01:48 AM, Sean Paul wrote:
On Fri, Jan 20, 2017 at 06:10:49PM +0800, Chris Zhong wrote:
The MIPI DSI do not need check the validity of resolution, the max
resolution should depend VOP. Hence, remove rk3288_mipi_dsi_mode_valid
here.
Does vop actually enforce this, though? I see that mode_config.max_width is
4096, but there is no bounds checking in mode_fixup().
The connector is currently rejecting everything greater than 2047. So I think
you're going to regress behavior here.
Sean
The mipi controller has not this width limit, it depend the VOP,
such as RK3399, VOP_LIT only support 2560,
but VOP_BIG support 4K. So this driver should check the width here.
I don't see anything in the vop driver that rejects large modes for little vop.
So, while I agree the check shouldn't be here, you should move it to where it
should be instead of removing it entirely.
Sean
drm_mode_validate_size will check the dev->mode_config.max_width and
dev->mode_config.max_height, these 2 value come from
rockchip_drm_mode_config_init,
currently, they are both 4096. So you are right, drm driver does not
distinguish
between vop lit and big.
I think Mark Yao already have a local solution, and he will post it soon.
Signed-off-by: Chris Zhong <zyw@xxxxxxxxxxxxxx>
---
Changes in v3: None
drivers/gpu/drm/rockchip/dw-mipi-dsi.c | 39 ----------------------------------
1 file changed, 39 deletions(-)
diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
index a93ce97..6f0e252 100644
--- a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
+++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
@@ -278,8 +278,6 @@ struct dw_mipi_dsi_plat_data {
u32 grf_dsi0_mode;
u32 grf_dsi0_mode_reg;
unsigned int max_data_lanes;
- enum drm_mode_status (*mode_valid)(struct drm_connector *connector,
- struct drm_display_mode *mode);
};
struct dw_mipi_dsi {
@@ -1081,23 +1079,8 @@ static int dw_mipi_dsi_connector_get_modes(struct drm_connector *connector)
return drm_panel_get_modes(dsi->panel);
}
-static enum drm_mode_status dw_mipi_dsi_mode_valid(
- struct drm_connector *connector,
- struct drm_display_mode *mode)
-{
- struct dw_mipi_dsi *dsi = con_to_dsi(connector);
-
- enum drm_mode_status mode_status = MODE_OK;
-
- if (dsi->pdata->mode_valid)
- mode_status = dsi->pdata->mode_valid(connector, mode);
-
- return mode_status;
-}
-
static struct drm_connector_helper_funcs dw_mipi_dsi_connector_helper_funcs = {
.get_modes = dw_mipi_dsi_connector_get_modes,
- .mode_valid = dw_mipi_dsi_mode_valid,
};
static void dw_mipi_dsi_drm_connector_destroy(struct drm_connector *connector)
@@ -1168,33 +1151,11 @@ static int rockchip_mipi_parse_dt(struct dw_mipi_dsi *dsi)
return 0;
}
-static enum drm_mode_status rk3288_mipi_dsi_mode_valid(
- struct drm_connector *connector,
- struct drm_display_mode *mode)
-{
- /*
- * The VID_PKT_SIZE field in the DSI_VID_PKT_CFG
- * register is 11-bit.
- */
- if (mode->hdisplay > 0x7ff)
- return MODE_BAD_HVALUE;
-
- /*
- * The V_ACTIVE_LINES field in the DSI_VTIMING_CFG
- * register is 11-bit.
- */
- if (mode->vdisplay > 0x7ff)
- return MODE_BAD_VVALUE;
-
- return MODE_OK;
-}
-
static struct dw_mipi_dsi_plat_data rk3288_mipi_dsi_drv_data = {
.dsi0_en_bit = RK3288_DSI0_SEL_VOP_LIT,
.dsi1_en_bit = RK3288_DSI1_SEL_VOP_LIT,
.grf_switch_reg = RK3288_GRF_SOC_CON6,
.max_data_lanes = 4,
- .mode_valid = rk3288_mipi_dsi_mode_valid,
};
static struct dw_mipi_dsi_plat_data rk3399_mipi_dsi_drv_data = {
--
2.6.3
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