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| Started by | Yakir Yang <ykk@rock-chips.com> |
|---|---|
| First post | 2016-06-14 13:50 +0200 |
| Last post | 2016-06-29 09:20 +0200 |
| Articles | 4 — 3 participants |
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[PATCH v3 02/10] drm/rockchip: analogix_dp: split the lcdc select setting into device data Yakir Yang <ykk@rock-chips.com> - 2016-06-14 13:50 +0200
Re: [PATCH v3 02/10] drm/rockchip: analogix_dp: split the lcdc select setting into device data Sean Paul <seanpaul@chromium.org> - 2016-06-23 16:40 +0200
Re: [PATCH v3 02/10] drm/rockchip: analogix_dp: split the lcdc select setting into device data Heiko Stuebner <heiko@sntech.de> - 2016-06-23 18:20 +0200
Re: [PATCH v3 02/10] drm/rockchip: analogix_dp: split the lcdc select setting into device data[Involving remittance information, please pay attention to the safety of property] Yakir Yang <ykk@rock-chips.com> - 2016-06-29 09:20 +0200
| From | Yakir Yang <ykk@rock-chips.com> |
|---|---|
| Date | 2016-06-14 13:50 +0200 |
| Subject | [PATCH v3 02/10] drm/rockchip: analogix_dp: split the lcdc select setting into device data |
| Message-ID | <rJV10-4hM-47@gated-at.bofh.it> |
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@rock-chips.com>
Acked-by: Mark Yao <mark.yao@rock-chips.com>
---
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),
+};
+
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
[toc] | [next] | [standalone]
| From | Sean Paul <seanpaul@chromium.org> |
|---|---|
| Date | 2016-06-23 16:40 +0200 |
| Subject | Re: [PATCH v3 02/10] drm/rockchip: analogix_dp: split the lcdc select setting into device data |
| Message-ID | <rNdXs-2Tn-29@gated-at.bofh.it> |
| In reply to | #1421832 |
On Tue, Jun 14, 2016 at 7:46 AM, Yakir Yang <ykk@rock-chips.com> 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@rock-chips.com>
> Acked-by: Mark Yao <mark.yao@rock-chips.com>
> ---
> 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@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
[toc] | [prev] | [next] | [standalone]
| From | Heiko Stuebner <heiko@sntech.de> |
|---|---|
| Date | 2016-06-23 18:20 +0200 |
| Message-ID | <rNfwe-45d-5@gated-at.bofh.it> |
| In reply to | #1429907 |
Am Donnerstag, 23. Juni 2016, 10:32:53 schrieb Sean Paul:
> On Tue, Jun 14, 2016 at 7:46 AM, Yakir Yang <ykk@rock-chips.com> 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@rock-chips.com>
> > Acked-by: Mark Yao <mark.yao@rock-chips.com>
> > ---
> > 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.
I guess what irks me personally more is that it hides the write-mask as well
So I guess something like the following would also define it somewhat future-
proof
#define RK3288_GRF_SOC_CON6 0x25c
#define RK3288_EDP_LCDC_SEL BIT(5)
#define HIWORD_UPDATE(val, mask) \
(val | (mask) << 16)
static const struct rockchip_dp_chip_data rk3288_dp = {
.lcdsel_grf_reg = RK3288_GRF_SOC_CON6,
.lcdsel_big = HIWORD_UPDATE(0, RK3288_EDP_LCDC_SEL),
.lcdsel_lit = HIWORD_UPDATE(RK3288_EDP_LCDC_SEL, RK3288_EDP_LCDC_SEL),
[toc] | [prev] | [next] | [standalone]
| From | Yakir Yang <ykk@rock-chips.com> |
|---|---|
| Date | 2016-06-29 09:20 +0200 |
| Subject | Re: [PATCH v3 02/10] drm/rockchip: analogix_dp: split the lcdc select setting into device data[Involving remittance information, please pay attention to the safety of property] |
| Message-ID | <rPhWV-1co-3@gated-at.bofh.it> |
| In reply to | #1429956 |
Heiko & Sean
On 06/24/2016 12:16 AM, Heiko Stuebner wrote:
> Am Donnerstag, 23. Juni 2016, 10:32:53 schrieb Sean Paul:
>> On Tue, Jun 14, 2016 at 7:46 AM, Yakir Yang <ykk@rock-chips.com> 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@rock-chips.com>
>>> Acked-by: Mark Yao <mark.yao@rock-chips.com>
>>> ---
>>> 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.
> I guess what irks me personally more is that it hides the write-mask as well
>
> So I guess something like the following would also define it somewhat future-
> proof
>
> #define RK3288_GRF_SOC_CON6 0x25c
> #define RK3288_EDP_LCDC_SEL BIT(5)
>
> #define HIWORD_UPDATE(val, mask) \
> (val | (mask) << 16)
>
> static const struct rockchip_dp_chip_data rk3288_dp = {
> .lcdsel_grf_reg = RK3288_GRF_SOC_CON6,
> .lcdsel_big = HIWORD_UPDATE(0, RK3288_EDP_LCDC_SEL),
> .lcdsel_lit = HIWORD_UPDATE(RK3288_EDP_LCDC_SEL, RK3288_EDP_LCDC_SEL),
>
Ah, great, thanks for your code, this should be more readable now.
Thanks,
- Yakir
>
>
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