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Date:   Sat, 27 Mar 2021 07:11:05 +0530
From:   Taniya Das <tdas@...eaurora.org>
To:     Stephen Boyd <sboyd@...nel.org>,
        Michael Turquette   <mturquette@...libre.com>
Cc:     Rajendra Nayak <rnayak@...eaurora.org>,
        linux-arm-msm@...r.kernel.org, linux-soc@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        Taniya Das <tdas@...eaurora.org>
Subject: [PATCH v2] clk: qcom: camcc: Update the clock ops for the SC7180

Some of the RCGs could be always ON from the XO source and could be used
as the clock on signal for the GDSC to be operational. In the cases where
the GDSCs are parked at different source with the source clock disabled,
it could lead to the GDSC to be stuck at ON/OFF during gdsc disable/enable.
Thus park the RCGs at XO during clock disable and update the rcg_ops to
use the shared_ops.

Fixes: 15d09e830bbc ("clk: qcom: camcc: Add camera clock controller driver for SC7180")
Signed-off-by: Taniya Das <tdas@...eaurora.org>
---
 drivers/clk/qcom/camcc-sc7180.c | 50 ++++++++++++++++++++---------------------
 1 file changed, 25 insertions(+), 25 deletions(-)

diff --git a/drivers/clk/qcom/camcc-sc7180.c b/drivers/clk/qcom/camcc-sc7180.c
index dbac565..9bcf2f8 100644
--- a/drivers/clk/qcom/camcc-sc7180.c
+++ b/drivers/clk/qcom/camcc-sc7180.c
@@ -304,7 +304,7 @@ static struct clk_rcg2 cam_cc_bps_clk_src = {
 		.name = "cam_cc_bps_clk_src",
 		.parent_data = cam_cc_parent_data_2,
 		.num_parents = 5,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_shared_ops,
 	},
 };

@@ -325,7 +325,7 @@ static struct clk_rcg2 cam_cc_cci_0_clk_src = {
 		.name = "cam_cc_cci_0_clk_src",
 		.parent_data = cam_cc_parent_data_5,
 		.num_parents = 3,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_shared_ops,
 	},
 };

@@ -339,7 +339,7 @@ static struct clk_rcg2 cam_cc_cci_1_clk_src = {
 		.name = "cam_cc_cci_1_clk_src",
 		.parent_data = cam_cc_parent_data_5,
 		.num_parents = 3,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_shared_ops,
 	},
 };

@@ -360,7 +360,7 @@ static struct clk_rcg2 cam_cc_cphy_rx_clk_src = {
 		.name = "cam_cc_cphy_rx_clk_src",
 		.parent_data = cam_cc_parent_data_3,
 		.num_parents = 6,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_shared_ops,
 	},
 };

@@ -379,7 +379,7 @@ static struct clk_rcg2 cam_cc_csi0phytimer_clk_src = {
 		.name = "cam_cc_csi0phytimer_clk_src",
 		.parent_data = cam_cc_parent_data_0,
 		.num_parents = 4,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_shared_ops,
 	},
 };

@@ -393,7 +393,7 @@ static struct clk_rcg2 cam_cc_csi1phytimer_clk_src = {
 		.name = "cam_cc_csi1phytimer_clk_src",
 		.parent_data = cam_cc_parent_data_0,
 		.num_parents = 4,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_shared_ops,
 	},
 };

@@ -407,7 +407,7 @@ static struct clk_rcg2 cam_cc_csi2phytimer_clk_src = {
 		.name = "cam_cc_csi2phytimer_clk_src",
 		.parent_data = cam_cc_parent_data_0,
 		.num_parents = 4,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_shared_ops,
 	},
 };

@@ -421,7 +421,7 @@ static struct clk_rcg2 cam_cc_csi3phytimer_clk_src = {
 		.name = "cam_cc_csi3phytimer_clk_src",
 		.parent_data = cam_cc_parent_data_0,
 		.num_parents = 4,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_shared_ops,
 	},
 };

@@ -443,7 +443,7 @@ static struct clk_rcg2 cam_cc_fast_ahb_clk_src = {
 		.name = "cam_cc_fast_ahb_clk_src",
 		.parent_data = cam_cc_parent_data_0,
 		.num_parents = 4,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_shared_ops,
 	},
 };

@@ -466,7 +466,7 @@ static struct clk_rcg2 cam_cc_icp_clk_src = {
 		.name = "cam_cc_icp_clk_src",
 		.parent_data = cam_cc_parent_data_2,
 		.num_parents = 5,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_shared_ops,
 	},
 };

@@ -488,7 +488,7 @@ static struct clk_rcg2 cam_cc_ife_0_clk_src = {
 		.name = "cam_cc_ife_0_clk_src",
 		.parent_data = cam_cc_parent_data_4,
 		.num_parents = 4,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_shared_ops,
 	},
 };

@@ -510,7 +510,7 @@ static struct clk_rcg2 cam_cc_ife_0_csid_clk_src = {
 		.name = "cam_cc_ife_0_csid_clk_src",
 		.parent_data = cam_cc_parent_data_3,
 		.num_parents = 6,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_shared_ops,
 	},
 };

@@ -524,7 +524,7 @@ static struct clk_rcg2 cam_cc_ife_1_clk_src = {
 		.name = "cam_cc_ife_1_clk_src",
 		.parent_data = cam_cc_parent_data_4,
 		.num_parents = 4,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_shared_ops,
 	},
 };

@@ -538,7 +538,7 @@ static struct clk_rcg2 cam_cc_ife_1_csid_clk_src = {
 		.name = "cam_cc_ife_1_csid_clk_src",
 		.parent_data = cam_cc_parent_data_3,
 		.num_parents = 6,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_shared_ops,
 	},
 };

@@ -553,7 +553,7 @@ static struct clk_rcg2 cam_cc_ife_lite_clk_src = {
 		.parent_data = cam_cc_parent_data_4,
 		.num_parents = 4,
 		.flags = CLK_SET_RATE_PARENT,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_shared_ops,
 	},
 };

@@ -567,7 +567,7 @@ static struct clk_rcg2 cam_cc_ife_lite_csid_clk_src = {
 		.name = "cam_cc_ife_lite_csid_clk_src",
 		.parent_data = cam_cc_parent_data_3,
 		.num_parents = 6,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_shared_ops,
 	},
 };

@@ -590,7 +590,7 @@ static struct clk_rcg2 cam_cc_ipe_0_clk_src = {
 		.name = "cam_cc_ipe_0_clk_src",
 		.parent_data = cam_cc_parent_data_2,
 		.num_parents = 5,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_shared_ops,
 	},
 };

@@ -613,7 +613,7 @@ static struct clk_rcg2 cam_cc_jpeg_clk_src = {
 		.name = "cam_cc_jpeg_clk_src",
 		.parent_data = cam_cc_parent_data_2,
 		.num_parents = 5,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_shared_ops,
 	},
 };

@@ -635,7 +635,7 @@ static struct clk_rcg2 cam_cc_lrme_clk_src = {
 		.name = "cam_cc_lrme_clk_src",
 		.parent_data = cam_cc_parent_data_6,
 		.num_parents = 5,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_shared_ops,
 	},
 };

@@ -656,7 +656,7 @@ static struct clk_rcg2 cam_cc_mclk0_clk_src = {
 		.name = "cam_cc_mclk0_clk_src",
 		.parent_data = cam_cc_parent_data_1,
 		.num_parents = 3,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_shared_ops,
 	},
 };

@@ -670,7 +670,7 @@ static struct clk_rcg2 cam_cc_mclk1_clk_src = {
 		.name = "cam_cc_mclk1_clk_src",
 		.parent_data = cam_cc_parent_data_1,
 		.num_parents = 3,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_shared_ops,
 	},
 };

@@ -684,7 +684,7 @@ static struct clk_rcg2 cam_cc_mclk2_clk_src = {
 		.name = "cam_cc_mclk2_clk_src",
 		.parent_data = cam_cc_parent_data_1,
 		.num_parents = 3,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_shared_ops,
 	},
 };

@@ -698,7 +698,7 @@ static struct clk_rcg2 cam_cc_mclk3_clk_src = {
 		.name = "cam_cc_mclk3_clk_src",
 		.parent_data = cam_cc_parent_data_1,
 		.num_parents = 3,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_shared_ops,
 	},
 };

@@ -712,7 +712,7 @@ static struct clk_rcg2 cam_cc_mclk4_clk_src = {
 		.name = "cam_cc_mclk4_clk_src",
 		.parent_data = cam_cc_parent_data_1,
 		.num_parents = 3,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_shared_ops,
 	},
 };

@@ -732,7 +732,7 @@ static struct clk_rcg2 cam_cc_slow_ahb_clk_src = {
 		.parent_data = cam_cc_parent_data_0,
 		.num_parents = 4,
 		.flags = CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE,
-		.ops = &clk_rcg2_ops,
+		.ops = &clk_rcg2_shared_ops,
 	},
 };

--
Qualcomm INDIA, on behalf of Qualcomm Innovation Center, Inc.is a member
of the Code Aurora Forum, hosted by the  Linux Foundation.

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