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Message-Id: <20250120-linux-next-25-01-19-x1e80100-camss-driver-v1-1-44c62a0edcd2@linaro.org>
Date: Mon, 20 Jan 2025 15:46:58 +0000
From: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To: Robert Foss <rfoss@...nel.org>, Todor Tomov <todor.too@...il.com>, 
 Mauro Carvalho Chehab <mchehab@...nel.org>
Cc: linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org, 
 linux-kernel@...r.kernel.org, 
 Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>, 
 Depeng Shao <quic_depengs@...cinc.com>, 
 Vikram Sharma <quic_vikramsa@...cinc.com>, 
 Bryan O'Donoghue <bryan.odonoghue@...aro.org>
Subject: [PATCH 1/7] media: qcom: camss: Add an id property to struct
 resources

In various places in CAMSS we assume a linear set of declared devices
{csiphy0, csiphy1, csiphy2} which currently works for upstream SoCs but for
upcoming SoCs some of the SoC resources will result in a set such as
{csiphy0, csiphy2} which will break the naive for() loops we have.

Introduce an identity property which resource declarations can populate
hence facilitating non-linear resource naming.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
---
 drivers/media/platform/qcom/camss/camss-csiphy.h |  1 +
 drivers/media/platform/qcom/camss/camss.c        | 38 +++++++++++++++++++++++-
 2 files changed, 38 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/qcom/camss/camss-csiphy.h b/drivers/media/platform/qcom/camss/camss-csiphy.h
index 86b98b37838e1..ab91273303b9e 100644
--- a/drivers/media/platform/qcom/camss/camss-csiphy.h
+++ b/drivers/media/platform/qcom/camss/camss-csiphy.h
@@ -81,6 +81,7 @@ struct csiphy_hw_ops {
 };
 
 struct csiphy_subdev_resources {
+	u8 id;
 	const struct csiphy_hw_ops *hw_ops;
 	const struct csiphy_formats *formats;
 };
diff --git a/drivers/media/platform/qcom/camss/camss.c b/drivers/media/platform/qcom/camss/camss.c
index f4fbf0d73dd1f..a128b1d1c6d57 100644
--- a/drivers/media/platform/qcom/camss/camss.c
+++ b/drivers/media/platform/qcom/camss/camss.c
@@ -46,6 +46,7 @@ static const struct camss_subdev_resources csiphy_res_8x16[] = {
 		.reg = { "csiphy0", "csiphy0_clk_mux" },
 		.interrupt = { "csiphy0" },
 		.csiphy = {
+			.id = 0,
 			.hw_ops = &csiphy_ops_2ph_1_0,
 			.formats = &csiphy_formats_8x16
 		}
@@ -62,6 +63,7 @@ static const struct camss_subdev_resources csiphy_res_8x16[] = {
 		.reg = { "csiphy1", "csiphy1_clk_mux" },
 		.interrupt = { "csiphy1" },
 		.csiphy = {
+			.id = 1,
 			.hw_ops = &csiphy_ops_2ph_1_0,
 			.formats = &csiphy_formats_8x16
 		}
@@ -318,6 +320,7 @@ static const struct camss_subdev_resources csiphy_res_8x96[] = {
 		.reg = { "csiphy0", "csiphy0_clk_mux" },
 		.interrupt = { "csiphy0" },
 		.csiphy = {
+			.id = 0,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_8x96
 		}
@@ -334,6 +337,7 @@ static const struct camss_subdev_resources csiphy_res_8x96[] = {
 		.reg = { "csiphy1", "csiphy1_clk_mux" },
 		.interrupt = { "csiphy1" },
 		.csiphy = {
+			.id = 1,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_8x96
 		}
@@ -350,6 +354,7 @@ static const struct camss_subdev_resources csiphy_res_8x96[] = {
 		.reg = { "csiphy2", "csiphy2_clk_mux" },
 		.interrupt = { "csiphy2" },
 		.csiphy = {
+			.id = 2,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_8x96
 		}
@@ -524,6 +529,7 @@ static const struct camss_subdev_resources csiphy_res_660[] = {
 		.reg = { "csiphy0", "csiphy0_clk_mux" },
 		.interrupt = { "csiphy0" },
 		.csiphy = {
+			.id = 0,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_8x96
 		}
@@ -542,6 +548,7 @@ static const struct camss_subdev_resources csiphy_res_660[] = {
 		.reg = { "csiphy1", "csiphy1_clk_mux" },
 		.interrupt = { "csiphy1" },
 		.csiphy = {
+			.id = 1,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_8x96
 		}
@@ -560,6 +567,7 @@ static const struct camss_subdev_resources csiphy_res_660[] = {
 		.reg = { "csiphy2", "csiphy2_clk_mux" },
 		.interrupt = { "csiphy2" },
 		.csiphy = {
+			.id = 2,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_8x96
 		}
@@ -756,6 +764,7 @@ static const struct camss_subdev_resources csiphy_res_845[] = {
 		.reg = { "csiphy0" },
 		.interrupt = { "csiphy0" },
 		.csiphy = {
+			.id = 0,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_sdm845
 		}
@@ -778,6 +787,7 @@ static const struct camss_subdev_resources csiphy_res_845[] = {
 		.reg = { "csiphy1" },
 		.interrupt = { "csiphy1" },
 		.csiphy = {
+			.id = 1,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_sdm845
 		}
@@ -800,6 +810,7 @@ static const struct camss_subdev_resources csiphy_res_845[] = {
 		.reg = { "csiphy2" },
 		.interrupt = { "csiphy2" },
 		.csiphy = {
+			.id = 2,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_sdm845
 		}
@@ -822,6 +833,7 @@ static const struct camss_subdev_resources csiphy_res_845[] = {
 		.reg = { "csiphy3" },
 		.interrupt = { "csiphy3" },
 		.csiphy = {
+			.id = 3,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_sdm845
 		}
@@ -998,6 +1010,7 @@ static const struct camss_subdev_resources csiphy_res_8250[] = {
 		.reg = { "csiphy0" },
 		.interrupt = { "csiphy0" },
 		.csiphy = {
+			.id = 0,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_sdm845
 		}
@@ -1011,6 +1024,7 @@ static const struct camss_subdev_resources csiphy_res_8250[] = {
 		.reg = { "csiphy1" },
 		.interrupt = { "csiphy1" },
 		.csiphy = {
+			.id = 1,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_sdm845
 		}
@@ -1024,6 +1038,7 @@ static const struct camss_subdev_resources csiphy_res_8250[] = {
 		.reg = { "csiphy2" },
 		.interrupt = { "csiphy2" },
 		.csiphy = {
+			.id = 2,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_sdm845
 		}
@@ -1037,6 +1052,7 @@ static const struct camss_subdev_resources csiphy_res_8250[] = {
 		.reg = { "csiphy3" },
 		.interrupt = { "csiphy3" },
 		.csiphy = {
+			.id = 3,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_sdm845
 		}
@@ -1050,6 +1066,7 @@ static const struct camss_subdev_resources csiphy_res_8250[] = {
 		.reg = { "csiphy4" },
 		.interrupt = { "csiphy4" },
 		.csiphy = {
+			.id = 4,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_sdm845
 		}
@@ -1063,6 +1080,7 @@ static const struct camss_subdev_resources csiphy_res_8250[] = {
 		.reg = { "csiphy5" },
 		.interrupt = { "csiphy5" },
 		.csiphy = {
+			.id = 5,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_sdm845
 		}
@@ -1277,6 +1295,7 @@ static const struct camss_subdev_resources csiphy_res_7280[] = {
 		.reg = { "csiphy0" },
 		.interrupt = { "csiphy0" },
 		.csiphy = {
+			.id = 0,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_sc7280
 		}
@@ -1291,6 +1310,7 @@ static const struct camss_subdev_resources csiphy_res_7280[] = {
 		.reg = { "csiphy1" },
 		.interrupt = { "csiphy1" },
 		.csiphy = {
+			.id = 1,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_sc7280
 		}
@@ -1305,6 +1325,7 @@ static const struct camss_subdev_resources csiphy_res_7280[] = {
 		.reg = { "csiphy2" },
 		.interrupt = { "csiphy2" },
 		.csiphy = {
+			.id = 2,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_sc7280
 		}
@@ -1319,6 +1340,7 @@ static const struct camss_subdev_resources csiphy_res_7280[] = {
 		.reg = { "csiphy3" },
 		.interrupt = { "csiphy3" },
 		.csiphy = {
+			.id = 3,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_sc7280
 		}
@@ -1333,6 +1355,7 @@ static const struct camss_subdev_resources csiphy_res_7280[] = {
 		.reg = { "csiphy4" },
 		.interrupt = { "csiphy4" },
 		.csiphy = {
+			.id = 4,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_sc7280
 		}
@@ -1580,6 +1603,7 @@ static const struct camss_subdev_resources csiphy_res_sc8280xp[] = {
 		.reg = { "csiphy0" },
 		.interrupt = { "csiphy0" },
 		.csiphy = {
+			.id = 0,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_sdm845
 		}
@@ -1593,6 +1617,7 @@ static const struct camss_subdev_resources csiphy_res_sc8280xp[] = {
 		.reg = { "csiphy1" },
 		.interrupt = { "csiphy1" },
 		.csiphy = {
+			.id = 1,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_sdm845
 		}
@@ -1606,6 +1631,7 @@ static const struct camss_subdev_resources csiphy_res_sc8280xp[] = {
 		.reg = { "csiphy2" },
 		.interrupt = { "csiphy2" },
 		.csiphy = {
+			.id = 2,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_sdm845
 		}
@@ -1619,6 +1645,7 @@ static const struct camss_subdev_resources csiphy_res_sc8280xp[] = {
 		.reg = { "csiphy3" },
 		.interrupt = { "csiphy3" },
 		.csiphy = {
+			.id = 3,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_sdm845
 		}
@@ -1948,6 +1975,7 @@ static const struct camss_subdev_resources csiphy_res_8550[] = {
 		.reg = { "csiphy0" },
 		.interrupt = { "csiphy0" },
 		.csiphy = {
+			.id = 0,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_sdm845
 		}
@@ -1961,6 +1989,7 @@ static const struct camss_subdev_resources csiphy_res_8550[] = {
 		.reg = { "csiphy1" },
 		.interrupt = { "csiphy1" },
 		.csiphy = {
+			.id = 1,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_sdm845
 		}
@@ -1974,6 +2003,7 @@ static const struct camss_subdev_resources csiphy_res_8550[] = {
 		.reg = { "csiphy2" },
 		.interrupt = { "csiphy2" },
 		.csiphy = {
+			.id = 2,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_sdm845
 		}
@@ -1987,6 +2017,7 @@ static const struct camss_subdev_resources csiphy_res_8550[] = {
 		.reg = { "csiphy3" },
 		.interrupt = { "csiphy3" },
 		.csiphy = {
+			.id = 3,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_sdm845
 		}
@@ -2000,6 +2031,7 @@ static const struct camss_subdev_resources csiphy_res_8550[] = {
 		.reg = { "csiphy4" },
 		.interrupt = { "csiphy4" },
 		.csiphy = {
+			.id = 4,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_sdm845
 		}
@@ -2013,6 +2045,7 @@ static const struct camss_subdev_resources csiphy_res_8550[] = {
 		.reg = { "csiphy5" },
 		.interrupt = { "csiphy5" },
 		.csiphy = {
+			.id = 5,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_sdm845
 		}
@@ -2026,6 +2059,7 @@ static const struct camss_subdev_resources csiphy_res_8550[] = {
 		.reg = { "csiphy6" },
 		.interrupt = { "csiphy6" },
 		.csiphy = {
+			.id = 6,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_sdm845
 		}
@@ -2039,6 +2073,7 @@ static const struct camss_subdev_resources csiphy_res_8550[] = {
 		.reg = { "csiphy7" },
 		.interrupt = { "csiphy7" },
 		.csiphy = {
+			.id = 7,
 			.hw_ops = &csiphy_ops_3ph_1_0,
 			.formats = &csiphy_formats_sdm845
 		}
@@ -2566,7 +2601,8 @@ static int camss_init_subdevices(struct camss *camss)
 
 	for (i = 0; i < camss->res->csiphy_num; i++) {
 		ret = msm_csiphy_subdev_init(camss, &camss->csiphy[i],
-					     &res->csiphy_res[i], i);
+					     &res->csiphy_res[i],
+					     res->csiphy_res[i].csiphy.id);
 		if (ret < 0) {
 			dev_err(camss->dev,
 				"Failed to init csiphy%d sub-device: %d\n",

-- 
2.47.1


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