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From:   Akhil P Oommen <quic_akhilpo@quicinc.com>
To:     freedreno <freedreno@lists.freedesktop.org>,
        <dri-devel@lists.freedesktop.org>, <linux-arm-msm@vger.kernel.org>,
        Rob Clark <robdclark@gmail.com>,
        Bjorn Andersson <bjorn.andersson@linaro.org>,
        "Stephen Boyd" <swboyd@chromium.org>,
        Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
CC:     Douglas Anderson <dianders@chromium.org>,
        <krzysztof.kozlowski@linaro.org>,
        Akhil P Oommen <quic_akhilpo@quicinc.com>,
        Andy Gross <agross@kernel.org>,
        Konrad Dybcio <konrad.dybcio@somainline.org>,
        Michael Turquette <mturquette@baylibre.com>,
        Stephen Boyd <sboyd@kernel.org>, <linux-clk@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>
Subject: [PATCH v3 4/5] clk: qcom: gpucc-sc7280: Add cx collapse reset support
Date:   Fri, 19 Aug 2022 01:48:38 +0530
Message-ID: <20220819014758.v3.4.I5e64ff4b77bb9079eb2edeea8a02585c9e76778f@changeid>
In-Reply-To: <1660853919-987-1-git-send-email-quic_akhilpo@quicinc.com>
References: <1660853919-987-1-git-send-email-quic_akhilpo@quicinc.com>
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Allow a consumer driver to poll for cx gdsc collapse through Reset
framework.

Signed-off-by: Akhil P Oommen <quic_akhilpo@quicinc.com>
---

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(+)

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[] = {
-- 
2.7.4