On Tue, Jun 14, 2016 at 7:46 AM, Yakir Yang <ykk@xxxxxxxxxxxxxx> wrote: > eDP controller need to declare which vop provide the video source, > and it's defined in GRF registers. > > But different chips have different GRF register address, so we need to > create a device data to declare the GRF messages for each chips. > > Signed-off-by: Yakir Yang <ykk@xxxxxxxxxxxxxx> > Acked-by: Mark Yao <mark.yao@xxxxxxxxxxxxxx> > --- > Changes in v3: > - Write a kerneldoc-style comment explaining the chips data fields (Tomasz, reviewed at Google Gerrit) > [https://chromium-review.googlesource.com/#/c/346313/10/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c@39] > - Drop the '.lcdcsel_mask' number in chips data field (Tomasz, reviewed at Google Gerrit) > [https://chromium-review.googlesource.com/#/c/346313/10/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c@382] > - Add acked flag from Mark. > > Changes in v2: None > > drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 39 +++++++++++++++++++------ > 1 file changed, 30 insertions(+), 9 deletions(-) > > diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c > index 2bc8a7e..3855f46 100644 > --- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c > +++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c > @@ -14,6 +14,7 @@ > > #include <linux/component.h> > #include <linux/mfd/syscon.h> > +#include <linux/of_device.h> > #include <linux/of_graph.h> > #include <linux/regmap.h> > #include <linux/reset.h> > @@ -35,11 +36,17 @@ > > #define to_dp(nm) container_of(nm, struct rockchip_dp_device, nm) > > -/* dp grf register offset */ > -#define GRF_SOC_CON6 0x025c > -#define GRF_EDP_LCD_SEL_MASK BIT(5) > -#define GRF_EDP_SEL_VOP_LIT BIT(5) > -#define GRF_EDP_SEL_VOP_BIG 0 > +/** > + * struct rockchip_dp_chip_data - splite the grf setting of kind of chips > + * @lcdsel_grf_reg: grf register offset of lcdc select > + * @lcdsel_big: reg value of selecting vop big for eDP > + * @lcdsel_lit: reg value of selecting vop little for eDP > + */ > +struct rockchip_dp_chip_data { > + u32 lcdsel_grf_reg; > + u32 lcdsel_big; > + u32 lcdsel_lit; > +}; > > struct rockchip_dp_device { > struct drm_device *drm_dev; > @@ -51,6 +58,8 @@ struct rockchip_dp_device { > struct regmap *grf; > struct reset_control *rst; > > + const struct rockchip_dp_chip_data *data; > + > struct analogix_dp_plat_data plat_data; > }; > > @@ -119,13 +128,13 @@ static void rockchip_dp_drm_encoder_enable(struct drm_encoder *encoder) > return; > > if (ret) > - val = GRF_EDP_SEL_VOP_LIT | (GRF_EDP_LCD_SEL_MASK << 16); > + val = dp->data->lcdsel_lit; > else > - val = GRF_EDP_SEL_VOP_BIG | (GRF_EDP_LCD_SEL_MASK << 16); > + val = dp->data->lcdsel_big; > > dev_dbg(dp->dev, "vop %s output to dp\n", (ret) ? "LIT" : "BIG"); > > - ret = regmap_write(dp->grf, GRF_SOC_CON6, val); > + ret = regmap_write(dp->grf, dp->data->lcdsel_grf_reg, val); > if (ret != 0) { > dev_err(dp->dev, "Could not write to GRF: %d\n", ret); > return; > @@ -246,6 +255,7 @@ static int rockchip_dp_bind(struct device *dev, struct device *master, > void *data) > { > struct rockchip_dp_device *dp = dev_get_drvdata(dev); > + const struct rockchip_dp_chip_data *dp_data; > struct drm_device *drm_dev = data; > int ret; > > @@ -256,10 +266,15 @@ static int rockchip_dp_bind(struct device *dev, struct device *master, > */ > dev_set_drvdata(dev, NULL); > > + dp_data = of_device_get_match_data(dev); > + if (!dp_data) > + return -ENODEV; > + > ret = rockchip_dp_init(dp); > if (ret < 0) > return ret; > > + dp->data = dp_data; > dp->drm_dev = drm_dev; > > ret = rockchip_dp_drm_create_encoder(dp); > @@ -365,8 +380,14 @@ static const struct dev_pm_ops rockchip_dp_pm_ops = { > SET_SYSTEM_SLEEP_PM_OPS(rockchip_dp_suspend, rockchip_dp_resume) > }; > > +static const struct rockchip_dp_chip_data rk3288_dp = { > + .lcdsel_grf_reg = 0x025c, > + .lcdsel_big = 0 | BIT(21), > + .lcdsel_lit = BIT(5) | BIT(21), I'm not sure what convention is in other drivers, but this seems less readable to me. I'd prefer that the magic numbers were assigned to a #define that corresponds to a TRM name in some header. Then you have names in the assignment instead of meaningless numbers. Sean > +}; > + > static const struct of_device_id rockchip_dp_dt_ids[] = { > - {.compatible = "rockchip,rk3288-dp",}, > + {.compatible = "rockchip,rk3288-dp", .data = &rk3288_dp }, > {} > }; > MODULE_DEVICE_TABLE(of, rockchip_dp_dt_ids); > -- > 1.9.1 > > > _______________________________________________ > dri-devel mailing list > dri-devel@xxxxxxxxxxxxxxxxxxxxx > https://lists.freedesktop.org/mailman/listinfo/dri-devel _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
