Re: [PATCH 02/10] drm/msm/dsi: Turn msm_dsi_config::io_start into a 2d array
From: Dmitry Baryshkov
Date: Sat Feb 11 2023 - 08:17:13 EST
On 11/02/2023 13:51, Konrad Dybcio wrote:
Currently, we allow for MAX_DSI entries in io_start to facilitate for
MAX_DSI number of DSI hosts at different addresses. The configuration
is matched against the DSI CTRL hardware revision read back from the
component. We need a way to resolve situations where multiple SoCs
with different register maps may use the same version of DSI CTRL. In
preparation to do so, make msm_dsi_config a 2d array where each entry
represents a set of configurations adequate for a given SoC.
This is totally fine to do, as the only differentiating factors
between same-version-different-SoCs configurations are the number of
DSI hosts (1 or 2, at least as of today) and the set of registers.
s/set of registers/starting address/ ?
The regulator setup is the same, because the DSI hardware is the same,
regardless of the SoC it was implemented in.
Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
---
drivers/gpu/drm/msm/dsi/dsi_cfg.c | 52 ++++++++++++++++++++++--------
drivers/gpu/drm/msm/dsi/dsi_cfg.h | 5 ++-
drivers/gpu/drm/msm/dsi/dsi_host.c | 2 +-
3 files changed, 44 insertions(+), 15 deletions(-)
diff --git a/drivers/gpu/drm/msm/dsi/dsi_cfg.c b/drivers/gpu/drm/msm/dsi/dsi_cfg.c
index 6d21f0b33411..068d45b3a8f0 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_cfg.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_cfg.c
@@ -21,7 +21,9 @@ static const struct msm_dsi_config apq8064_dsi_cfg = {
.num_regulators = ARRAY_SIZE(apq8064_dsi_regulators),
.bus_clk_names = dsi_v2_bus_clk_names,
.num_bus_clks = ARRAY_SIZE(dsi_v2_bus_clk_names),
- .io_start = { 0x4700000, 0x5800000 },
+ .io_start = {
+ { 0x4700000, 0x5800000 },
+ },
.num_dsi = 2,
};
@@ -41,7 +43,9 @@ static const struct msm_dsi_config msm8974_apq8084_dsi_cfg = {
.num_regulators = ARRAY_SIZE(msm8974_apq8084_regulators),
.bus_clk_names = dsi_6g_bus_clk_names,
.num_bus_clks = ARRAY_SIZE(dsi_6g_bus_clk_names),
- .io_start = { 0xfd922800, 0xfd922b00 },
+ .io_start = {
+ { 0xfd922800, 0xfd922b00 },
+ },
.num_dsi = 2,
};
@@ -60,7 +64,9 @@ static const struct msm_dsi_config msm8916_dsi_cfg = {
.num_regulators = ARRAY_SIZE(msm8916_dsi_regulators),
.bus_clk_names = dsi_8916_bus_clk_names,
.num_bus_clks = ARRAY_SIZE(dsi_8916_bus_clk_names),
- .io_start = { 0x1a98000 },
+ .io_start = {
+ { 0x1a98000 },
+ },
.num_dsi = 1,
};
@@ -79,7 +85,9 @@ static const struct msm_dsi_config msm8976_dsi_cfg = {
.num_regulators = ARRAY_SIZE(msm8976_dsi_regulators),
.bus_clk_names = dsi_8976_bus_clk_names,
.num_bus_clks = ARRAY_SIZE(dsi_8976_bus_clk_names),
- .io_start = { 0x1a94000, 0x1a96000 },
+ .io_start = {
+ { 0x1a94000, 0x1a96000 },
+ },
.num_dsi = 2,
};
@@ -98,7 +106,9 @@ static const struct msm_dsi_config msm8994_dsi_cfg = {
.num_regulators = ARRAY_SIZE(msm8994_dsi_regulators),
.bus_clk_names = dsi_6g_bus_clk_names,
.num_bus_clks = ARRAY_SIZE(dsi_6g_bus_clk_names),
- .io_start = { 0xfd998000, 0xfd9a0000 },
+ .io_start = {
+ { 0xfd998000, 0xfd9a0000 },
+ },
.num_dsi = 2,
};
@@ -118,7 +128,9 @@ static const struct msm_dsi_config msm8996_dsi_cfg = {
.num_regulators = ARRAY_SIZE(msm8996_dsi_regulators),
.bus_clk_names = dsi_8996_bus_clk_names,
.num_bus_clks = ARRAY_SIZE(dsi_8996_bus_clk_names),
- .io_start = { 0x994000, 0x996000 },
+ .io_start = {
+ { 0x994000, 0x996000 },
+ },
.num_dsi = 2,
};
@@ -137,7 +149,9 @@ static const struct msm_dsi_config msm8998_dsi_cfg = {
.num_regulators = ARRAY_SIZE(msm8998_dsi_regulators),
.bus_clk_names = dsi_msm8998_bus_clk_names,
.num_bus_clks = ARRAY_SIZE(dsi_msm8998_bus_clk_names),
- .io_start = { 0xc994000, 0xc996000 },
+ .io_start = {
+ { 0xc994000, 0xc996000 },
+ },
.num_dsi = 2,
};
@@ -155,7 +169,9 @@ static const struct msm_dsi_config sdm660_dsi_cfg = {
.num_regulators = ARRAY_SIZE(sdm660_dsi_regulators),
.bus_clk_names = dsi_sdm660_bus_clk_names,
.num_bus_clks = ARRAY_SIZE(dsi_sdm660_bus_clk_names),
- .io_start = { 0xc994000, 0xc996000 },
+ .io_start = {
+ { 0xc994000, 0xc996000 },
+ },
.num_dsi = 2,
};
@@ -177,7 +193,9 @@ static const struct msm_dsi_config sdm845_dsi_cfg = {
.num_regulators = ARRAY_SIZE(sdm845_dsi_regulators),
.bus_clk_names = dsi_sdm845_bus_clk_names,
.num_bus_clks = ARRAY_SIZE(dsi_sdm845_bus_clk_names),
- .io_start = { 0xae94000, 0xae96000 },
+ .io_start = {
+ { 0xae94000, 0xae96000 },
+ },
.num_dsi = 2,
};
@@ -191,7 +209,9 @@ static const struct msm_dsi_config sm8550_dsi_cfg = {
.num_regulators = ARRAY_SIZE(sm8550_dsi_regulators),
.bus_clk_names = dsi_sdm845_bus_clk_names,
.num_bus_clks = ARRAY_SIZE(dsi_sdm845_bus_clk_names),
- .io_start = { 0xae94000, 0xae96000 },
+ .io_start = {
+ { 0xae94000, 0xae96000 },
+ },
.num_dsi = 2,
};
@@ -205,7 +225,9 @@ static const struct msm_dsi_config sc7180_dsi_cfg = {
.num_regulators = ARRAY_SIZE(sc7180_dsi_regulators),
.bus_clk_names = dsi_sc7180_bus_clk_names,
.num_bus_clks = ARRAY_SIZE(dsi_sc7180_bus_clk_names),
- .io_start = { 0xae94000 },
+ .io_start = {
+ { 0xae94000 },
+ },
.num_dsi = 1,
};
@@ -223,7 +245,9 @@ static const struct msm_dsi_config sc7280_dsi_cfg = {
.num_regulators = ARRAY_SIZE(sc7280_dsi_regulators),
.bus_clk_names = dsi_sc7280_bus_clk_names,
.num_bus_clks = ARRAY_SIZE(dsi_sc7280_bus_clk_names),
- .io_start = { 0xae94000, 0xae96000 },
+ .io_start = {
+ { 0xae94000, 0xae96000 },
+ },
.num_dsi = 2,
};
@@ -241,7 +265,9 @@ static const struct msm_dsi_config qcm2290_dsi_cfg = {
.num_regulators = ARRAY_SIZE(qcm2290_dsi_cfg_regulators),
.bus_clk_names = dsi_qcm2290_bus_clk_names,
.num_bus_clks = ARRAY_SIZE(dsi_qcm2290_bus_clk_names),
- .io_start = { 0x5e94000 },
+ .io_start = {
+ { 0x5e94000 },
+ },
.num_dsi = 1,
};
diff --git a/drivers/gpu/drm/msm/dsi/dsi_cfg.h b/drivers/gpu/drm/msm/dsi/dsi_cfg.h
index 44be4a88aa83..df9f09876ccb 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_cfg.h
+++ b/drivers/gpu/drm/msm/dsi/dsi_cfg.h
@@ -32,13 +32,16 @@
#define DSI_6G_REG_SHIFT 4
+/* Maximum number of configurations matched against the same hw revision */
+#define VARIANTS_MAX 2
+
struct msm_dsi_config {
u32 io_offset;
const struct regulator_bulk_data *regulator_data;
int num_regulators;
const char * const *bus_clk_names;
const int num_bus_clks;
- const resource_size_t io_start[DSI_MAX];
+ const resource_size_t io_start[VARIANTS_MAX][DSI_MAX];
const int num_dsi;
};
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index 18fa30e1e858..22ba8726b0ea 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -1869,7 +1869,7 @@ static int dsi_host_get_id(struct msm_dsi_host *msm_host)
return -EINVAL;
for (i = 0; i < cfg->num_dsi; i++) {
- if (cfg->io_start[i] == res->start)
+ if (cfg->io_start[0][i] == res->start)
return i;
}
--
With best wishes
Dmitry