[v5,4/6] clk: qcom: gpucc-sc7280: Add cx collapse reset support

Commit Message

Akhil P Oommen Aug. 28, 2022, 7:21 p.m. UTC

Allow a consumer driver to poll for cx gdsc collapse through Reset
framework.

Signed-off-by: Akhil P Oommen <[e-mail]>
Reviewed-by: Dmitry Baryshkov <[e-mail]>
---

(no changes since v3)

Changes in v3:
- Convert 'struct qcom_reset_ops cx_gdsc_reset' to 'static const' (Krzysztof)

Changes in v2:
- Minor update to use the updated custom reset ops implementation

 drivers/clk/qcom/gpucc-sc7280.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

Patch

diff --git a/drivers/clk/qcom/gpucc-sc7280.c b/drivers/clk/qcom/gpucc-sc7280.c
index 9a832f2..fece3f4 100644
--- a/drivers/clk/qcom/gpucc-sc7280.c
+++ b/drivers/clk/qcom/gpucc-sc7280.c
@@ -433,12 +433,22 @@  static const struct regmap_config gpu_cc_sc7280_regmap_config = {
 	.fast_io = true,
 };
 
+static const struct qcom_reset_ops cx_gdsc_reset = {
+	.reset = gdsc_wait_for_collapse,
+};
+
+static const struct qcom_reset_map gpucc_sc7280_resets[] = {
+	[GPU_CX_COLLAPSE] = { .ops = &cx_gdsc_reset, .priv = &cx_gdsc },
+};
+
 static const struct qcom_cc_desc gpu_cc_sc7280_desc = {
 	.config = &gpu_cc_sc7280_regmap_config,
 	.clks = gpu_cc_sc7280_clocks,
 	.num_clks = ARRAY_SIZE(gpu_cc_sc7280_clocks),
 	.gdscs = gpu_cc_sc7180_gdscs,
 	.num_gdscs = ARRAY_SIZE(gpu_cc_sc7180_gdscs),
+	.resets = gpucc_sc7280_resets,
+	.num_resets = ARRAY_SIZE(gpucc_sc7280_resets),
 };
 
 static const struct of_device_id gpu_cc_sc7280_match_table[] = {