On 04/08/2023 21:09, Konrad Dybcio wrote:
On some platforms (like SM8350) we're expected to only touch certain bits
(such as 0 and 4 corresponding to mask 0x11). Add support for doing so.
Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
---
drivers/media/platform/qcom/venus/core.h | 1 +
drivers/media/platform/qcom/venus/hfi_venus.c | 15 ++++++++++++---
2 files changed, 13 insertions(+), 3 deletions(-)
diff --git a/drivers/media/platform/qcom/venus/core.h b/drivers/media/platform/qcom/venus/core.h
index d996abd339e1..2999c24392f5 100644
--- a/drivers/media/platform/qcom/venus/core.h
+++ b/drivers/media/platform/qcom/venus/core.h
@@ -38,6 +38,7 @@ struct freq_tbl {
struct reg_val {
u32 reg;
u32 value;
+ u32 mask;
};
struct bw_tbl {
diff --git a/drivers/media/platform/qcom/venus/hfi_venus.c b/drivers/media/platform/qcom/venus/hfi_venus.c
index 19fc6575a489..d4bad66f7293 100644
--- a/drivers/media/platform/qcom/venus/hfi_venus.c
+++ b/drivers/media/platform/qcom/venus/hfi_venus.c
@@ -349,10 +349,19 @@ static void venus_set_registers(struct venus_hfi_device *hdev)
const struct venus_resources *res = hdev->core->res;
const struct reg_val *tbl = res->reg_tbl;
unsigned int count = res->reg_tbl_size;
- unsigned int i;
+ unsigned int i, val;
u32 val;
+
+ for (i = 0; i < count; i++) {
+ val = tbl[i].value;
struct reg_val looks like this
struct reg_val {
u32 reg;
u32 value;
};
val should be declared a u32
- for (i = 0; i < count; i++)
- writel(tbl[i].value, hdev->core->base + tbl[i].reg);
+ /* In some cases, we only want to update certain bits */
I'll trust this is a legitimate and true statement.
+ if (tbl[i].mask) {
+ val = readl(hdev->core->base + tbl[i].reg);
+ val = (val & ~tbl[i].mask) | (tbl[i].value & tbl[i].mask);
feels like something regmap_update_bits() already does though, I prefer
this because there's less code in it.
+ }
+
+ writel(val, hdev->core->base + tbl[i].reg);
+ }
With the val declaration fix
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx>
