Re: [PATCH v2 1/5] drm/rockchip: vop: get rid of register init table
From: Mark yao
Date: Sun Jul 16 2017 - 22:10:42 EST
On 2017å07æ14æ 04:29, Sean Paul wrote:
On Thu, Jul 13, 2017 at 09:33:45AM +0800, Mark yao wrote:
On 2017å07æ13æ 00:47, Sean Paul wrote:
On Wed, Jul 12, 2017 at 10:03:27AM +0800, Mark Yao wrote:
Register init table use un-document define, it is unreadable,
And sometimes we only want to update tiny bits, init table
method is not friendly, it's diffcult to reuse for difference
chips.
While I'm happy to see the init_table removed, it seems like the new code is not
equivalent to the old (ie: some register writes have been dropped). How did you
ensure that you're not breaking existing boards that depend on the deleted register
initialization?
Sean
All the existing boards works fine on my internal kernel board with the init_table removed,
We had tested all the existing boards, so it's no problem to removed init_table
That begs the question... why was it introduced if it's not necessary?
Hi Sean
Some registers need to be initialized when vop power on, global_config_done, blank, win gate, etc.
Previously init_table was introduced to handle the initialization of these registers.
So, when we remove the init_table mechanism, we need to re-join the initialization of these registers,
this job is already done in this patch.
I think the title "get rid of" caused some doubts, it's not just remove init_table mechanism,
to be exact, direct setting needed register instead of handling with init_table.
I will make it cleaner next version.
Thanks.
Sean
Signed-off-by: Mark Yao <mark.yao@xxxxxxxxxxxxxx>
---
drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 6 ++--
drivers/gpu/drm/rockchip/rockchip_drm_vop.h | 10 ++-----
drivers/gpu/drm/rockchip/rockchip_vop_reg.c | 43 +++--------------------------
3 files changed, 10 insertions(+), 49 deletions(-)
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index 45589d6..7a5f809 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -1393,7 +1393,6 @@ static void vop_destroy_crtc(struct vop *vop)
static int vop_initial(struct vop *vop)
{
const struct vop_data *vop_data = vop->data;
- const struct vop_reg_data *init_table = vop_data->init_table;
struct reset_control *ahb_rst;
int i, ret;
@@ -1453,13 +1452,14 @@ static int vop_initial(struct vop *vop)
memcpy(vop->regsbak, vop->regs, vop->len);
- for (i = 0; i < vop_data->table_size; i++)
- vop_writel(vop, init_table[i].offset, init_table[i].value);
+ VOP_CTRL_SET(vop, global_regdone_en, 1);
+ VOP_CTRL_SET(vop, dsp_blank, 0);
for (i = 0; i < vop_data->win_size; i++) {
const struct vop_win_data *win = &vop_data->win[i];
VOP_WIN_SET(vop, win, enable, 0);
+ VOP_WIN_SET(vop, win, gate, 1);
}
vop_cfg_done(vop);
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
index 9979fd0..084d3b2 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
@@ -24,11 +24,6 @@ enum vop_data_format {
VOP_FMT_YUV444SP,
};
-struct vop_reg_data {
- uint32_t offset;
- uint32_t value;
-};
-
struct vop_reg {
uint32_t offset;
uint32_t shift;
@@ -46,6 +41,7 @@ struct vop_ctrl {
struct vop_reg hdmi_en;
struct vop_reg mipi_en;
struct vop_reg dp_en;
+ struct vop_reg dsp_blank;
struct vop_reg out_mode;
struct vop_reg dither_down;
struct vop_reg dither_up;
@@ -65,6 +61,7 @@ struct vop_ctrl {
struct vop_reg line_flag_num[2];
+ struct vop_reg global_regdone_en;
struct vop_reg cfg_done;
};
@@ -115,6 +112,7 @@ struct vop_win_phy {
uint32_t nformats;
struct vop_reg enable;
+ struct vop_reg gate;
struct vop_reg format;
struct vop_reg rb_swap;
struct vop_reg act_info;
@@ -136,8 +134,6 @@ struct vop_win_data {
};
struct vop_data {
- const struct vop_reg_data *init_table;
- unsigned int table_size;
const struct vop_ctrl *ctrl;
const struct vop_intr *intr;
const struct vop_win_data *win;
diff --git a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
index bafd698..00e9d79 100644
--- a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
+++ b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
@@ -127,13 +127,7 @@
.cfg_done = VOP_REG(RK3036_REG_CFG_DONE, 0x1, 0),
};
-static const struct vop_reg_data rk3036_vop_init_reg_table[] = {
- {RK3036_DSP_CTRL1, 0x00000000},
-};
-
static const struct vop_data rk3036_vop = {
- .init_table = rk3036_vop_init_reg_table,
- .table_size = ARRAY_SIZE(rk3036_vop_init_reg_table),
.ctrl = &rk3036_ctrl_data,
.intr = &rk3036_intr,
.win = rk3036_vop_win_data,
@@ -193,7 +187,8 @@
static const struct vop_win_phy rk3288_win23_data = {
.data_formats = formats_win_lite,
.nformats = ARRAY_SIZE(formats_win_lite),
- .enable = VOP_REG(RK3288_WIN2_CTRL0, 0x1, 0),
+ .enable = VOP_REG(RK3288_WIN2_CTRL0, 0x1, 4),
+ .gate = VOP_REG(RK3288_WIN2_CTRL0, 0x1, 0),
.format = VOP_REG(RK3288_WIN2_CTRL0, 0x7, 1),
.rb_swap = VOP_REG(RK3288_WIN2_CTRL0, 0x1, 12),
.dsp_info = VOP_REG(RK3288_WIN2_DSP_INFO0, 0x0fff0fff, 0),
@@ -215,6 +210,7 @@
.dither_down = VOP_REG(RK3288_DSP_CTRL1, 0xf, 1),
.dither_up = VOP_REG(RK3288_DSP_CTRL1, 0x1, 6),
.data_blank = VOP_REG(RK3288_DSP_CTRL0, 0x1, 19),
+ .dsp_blank = VOP_REG(RK3288_DSP_CTRL0, 0x3, 18),
.out_mode = VOP_REG(RK3288_DSP_CTRL0, 0xf, 0),
.pin_pol = VOP_REG(RK3288_DSP_CTRL0, 0xf, 4),
.htotal_pw = VOP_REG(RK3288_DSP_HTOTAL_HS_END, 0x1fff1fff, 0),
@@ -224,22 +220,10 @@
.hpost_st_end = VOP_REG(RK3288_POST_DSP_HACT_INFO, 0x1fff1fff, 0),
.vpost_st_end = VOP_REG(RK3288_POST_DSP_VACT_INFO, 0x1fff1fff, 0),
.line_flag_num[0] = VOP_REG(RK3288_INTR_CTRL0, 0x1fff, 12),
+ .global_regdone_en = VOP_REG(RK3288_SYS_CTRL, 0x1, 11),
.cfg_done = VOP_REG(RK3288_REG_CFG_DONE, 0x1, 0),
};
-static const struct vop_reg_data rk3288_init_reg_table[] = {
- {RK3288_SYS_CTRL, 0x00c00000},
- {RK3288_DSP_CTRL0, 0x00000000},
- {RK3288_WIN0_CTRL0, 0x00000080},
- {RK3288_WIN1_CTRL0, 0x00000080},
- /* TODO: Win2/3 support multiple area function, but we haven't found
- * a suitable way to use it yet, so let's just use them as other windows
- * with only area 0 enabled.
- */
- {RK3288_WIN2_CTRL0, 0x00000010},
- {RK3288_WIN3_CTRL0, 0x00000010},
-};
-
/*
* Note: rk3288 has a dedicated 'cursor' window, however, that window requires
* special support to get alpha blending working. For now, just use overlay
@@ -273,8 +257,6 @@
};
static const struct vop_data rk3288_vop = {
- .init_table = rk3288_init_reg_table,
- .table_size = ARRAY_SIZE(rk3288_init_reg_table),
.feature = VOP_FEATURE_OUTPUT_RGB10,
.intr = &rk3288_vop_intr,
.ctrl = &rk3288_ctrl_data,
@@ -328,22 +310,7 @@
.clear = VOP_REG_MASK(RK3399_INTR_CLEAR0, 0xffff, 0),
};
-static const struct vop_reg_data rk3399_init_reg_table[] = {
- {RK3399_SYS_CTRL, 0x2000f800},
- {RK3399_DSP_CTRL0, 0x00000000},
- {RK3399_WIN0_CTRL0, 0x00000080},
- {RK3399_WIN1_CTRL0, 0x00000080},
- /* TODO: Win2/3 support multiple area function, but we haven't found
- * a suitable way to use it yet, so let's just use them as other windows
- * with only area 0 enabled.
- */
- {RK3399_WIN2_CTRL0, 0x00000010},
- {RK3399_WIN3_CTRL0, 0x00000010},
-};
-
static const struct vop_data rk3399_vop_big = {
- .init_table = rk3399_init_reg_table,
- .table_size = ARRAY_SIZE(rk3399_init_reg_table),
.feature = VOP_FEATURE_OUTPUT_RGB10,
.intr = &rk3399_vop_intr,
.ctrl = &rk3399_ctrl_data,
@@ -362,8 +329,6 @@
};
static const struct vop_data rk3399_vop_lit = {
- .init_table = rk3399_init_reg_table,
- .table_size = ARRAY_SIZE(rk3399_init_reg_table),
.intr = &rk3399_vop_intr,
.ctrl = &rk3399_ctrl_data,
/*
--
1.9.1
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--
ïark Yao
--
ïark Yao