clk: qcom: Add video clock controller driver for SM6350

Add support for the video clock controller found on SM6350 based devices. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Signed-off-by: Konrad Dybcio <konradybcio@kernel.org> Co-developed-by: Luca Weiss <luca.weiss@fairphone.com> Signed-off-by: Luca Weiss <luca.weiss@fairphone.com> Link: https://lore.kernel.org/r/20250324-sm6350-videocc-v2-3-cc22386433f4@fairphone.com Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2025-12-28 12:37:55 -05:00 · 2025-03-24 09:41:03 +01:00
parent d7eddaf0ed
commit 720b1e8f20
3 changed files with 365 additions and 0 deletions
--- a/drivers/clk/qcom/Kconfig
+++ b/drivers/clk/qcom/Kconfig
@@ -1329,6 +1329,15 @@ config SA_VIDEOCC_8775P
 	  Say Y if you want to support video devices and functionality such as
 	  video encode/decode.

+config SM_VIDEOCC_6350
+	tristate "SM6350 Video Clock Controller"
+	select SM_GCC_6350
+	select QCOM_GDSC
+	help
+	  Support for the video clock controller on SM6350 devices.
+	  Say Y if you want to support video devices and functionality such as
+	  video encode and decode.
+
 config SM_VIDEOCC_7150
 	tristate "SM7150 Video Clock Controller"
 	depends on ARM64 || COMPILE_TEST
--- a/drivers/clk/qcom/Makefile
+++ b/drivers/clk/qcom/Makefile
@@ -164,6 +164,7 @@ obj-$(CONFIG_SM_LPASSCC_6115) += lpasscc-sm6115.o
 obj-$(CONFIG_SM_TCSRCC_8550) += tcsrcc-sm8550.o
 obj-$(CONFIG_SM_TCSRCC_8650) += tcsrcc-sm8650.o
 obj-$(CONFIG_SM_TCSRCC_8750) += tcsrcc-sm8750.o
+obj-$(CONFIG_SM_VIDEOCC_6350) += videocc-sm6350.o
 obj-$(CONFIG_SM_VIDEOCC_7150) += videocc-sm7150.o
 obj-$(CONFIG_SM_VIDEOCC_8150) += videocc-sm8150.o
 obj-$(CONFIG_SM_VIDEOCC_8250) += videocc-sm8250.o
--- a/drivers/clk/qcom/videocc-sm6350.c
+++ b/drivers/clk/qcom/videocc-sm6350.c
@@ -0,0 +1,355 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2021, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2021, Konrad Dybcio <konrad.dybcio@somainline.org>
+ * Copyright (c) 2025, Luca Weiss <luca.weiss@fairphone.com>
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#include <dt-bindings/clock/qcom,sm6350-videocc.h>
+
+#include "clk-alpha-pll.h"
+#include "clk-branch.h"
+#include "clk-rcg.h"
+#include "clk-regmap.h"
+#include "common.h"
+#include "gdsc.h"
+
+enum {
+	DT_IFACE,
+	DT_BI_TCXO,
+	DT_SLEEP_CLK,
+};
+
+enum {
+	P_BI_TCXO,
+	P_CHIP_SLEEP_CLK,
+	P_VIDEO_PLL0_OUT_EVEN,
+};
+
+static const struct pll_vco fabia_vco[] = {
+	{ 125000000, 1000000000, 1 },
+};
+
+/* 600 MHz */
+static const struct alpha_pll_config video_pll0_config = {
+	.l = 0x1f,
+	.alpha = 0x4000,
+	.config_ctl_val = 0x20485699,
+	.config_ctl_hi_val = 0x00002067,
+	.test_ctl_val = 0x40000000,
+	.test_ctl_hi_val = 0x00000002,
+	.user_ctl_val = 0x00000101,
+	.user_ctl_hi_val = 0x00004005,
+};
+
+static struct clk_alpha_pll video_pll0 = {
+	.offset = 0x0,
+	.vco_table = fabia_vco,
+	.num_vco = ARRAY_SIZE(fabia_vco),
+	.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_FABIA],
+	.clkr = {
+		.hw.init = &(const struct clk_init_data) {
+			.name = "video_pll0",
+			.parent_data = &(const struct clk_parent_data) {
+				.index = DT_BI_TCXO,
+			},
+			.num_parents = 1,
+			.ops = &clk_alpha_pll_fabia_ops,
+		},
+	},
+};
+
+static const struct clk_div_table post_div_table_video_pll0_out_even[] = {
+	{ 0x1, 2 },
+	{ }
+};
+
+static struct clk_alpha_pll_postdiv video_pll0_out_even = {
+	.offset = 0x0,
+	.post_div_shift = 8,
+	.post_div_table = post_div_table_video_pll0_out_even,
+	.num_post_div = ARRAY_SIZE(post_div_table_video_pll0_out_even),
+	.width = 4,
+	.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_FABIA],
+	.clkr.hw.init = &(const struct clk_init_data) {
+		.name = "video_pll0_out_even",
+		.parent_hws = (const struct clk_hw*[]) {
+			&video_pll0.clkr.hw,
+		},
+		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
+		.ops = &clk_alpha_pll_postdiv_fabia_ops,
+	},
+};
+
+static const struct parent_map video_cc_parent_map_0[] = {
+	{ P_BI_TCXO, 0 },
+	{ P_VIDEO_PLL0_OUT_EVEN, 3 },
+};
+
+static const struct clk_parent_data video_cc_parent_data_0[] = {
+	{ .index = DT_BI_TCXO },
+	{ .hw = &video_pll0_out_even.clkr.hw },
+};
+
+static const struct parent_map video_cc_parent_map_1[] = {
+	{ P_CHIP_SLEEP_CLK, 0 },
+};
+
+static const struct clk_parent_data video_cc_parent_data_1[] = {
+	{ .index = DT_SLEEP_CLK },
+};
+
+static const struct freq_tbl ftbl_video_cc_iris_clk_src[] = {
+	F(133250000, P_VIDEO_PLL0_OUT_EVEN, 2, 0, 0),
+	F(240000000, P_VIDEO_PLL0_OUT_EVEN, 1.5, 0, 0),
+	F(300000000, P_VIDEO_PLL0_OUT_EVEN, 1, 0, 0),
+	F(380000000, P_VIDEO_PLL0_OUT_EVEN, 1, 0, 0),
+	F(460000000, P_VIDEO_PLL0_OUT_EVEN, 1, 0, 0),
+	{ }
+};
+
+static struct clk_rcg2 video_cc_iris_clk_src = {
+	.cmd_rcgr = 0x1000,
+	.mnd_width = 0,
+	.hid_width = 5,
+	.parent_map = video_cc_parent_map_0,
+	.freq_tbl = ftbl_video_cc_iris_clk_src,
+	.clkr.hw.init = &(const struct clk_init_data) {
+		.name = "video_cc_iris_clk_src",
+		.parent_data = video_cc_parent_data_0,
+		.num_parents = ARRAY_SIZE(video_cc_parent_data_0),
+		.flags = CLK_SET_RATE_PARENT,
+		.ops = &clk_rcg2_shared_ops,
+	},
+};
+
+static const struct freq_tbl ftbl_video_cc_sleep_clk_src[] = {
+	F(32764, P_CHIP_SLEEP_CLK, 1, 0, 0),
+	{ }
+};
+
+static struct clk_rcg2 video_cc_sleep_clk_src = {
+	.cmd_rcgr = 0x701c,
+	.mnd_width = 0,
+	.hid_width = 5,
+	.parent_map = video_cc_parent_map_1,
+	.freq_tbl = ftbl_video_cc_sleep_clk_src,
+	.clkr.hw.init = &(const struct clk_init_data) {
+		.name = "video_cc_sleep_clk_src",
+		.parent_data = video_cc_parent_data_1,
+		.num_parents = ARRAY_SIZE(video_cc_parent_data_1),
+		.ops = &clk_rcg2_ops,
+	},
+};
+
+static struct clk_branch video_cc_iris_ahb_clk = {
+	.halt_reg = 0x5004,
+	.halt_check = BRANCH_VOTED,
+	.clkr = {
+		.enable_reg = 0x5004,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "video_cc_iris_ahb_clk",
+			.parent_hws = (const struct clk_hw*[]) {
+				&video_cc_iris_clk_src.clkr.hw,
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch video_cc_mvs0_axi_clk = {
+	.halt_reg = 0x800c,
+	.halt_check = BRANCH_HALT,
+	.clkr = {
+		.enable_reg = 0x800c,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "video_cc_mvs0_axi_clk",
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch video_cc_mvs0_core_clk = {
+	.halt_reg = 0x3010,
+	.halt_check = BRANCH_VOTED,
+	.hwcg_reg = 0x3010,
+	.hwcg_bit = 1,
+	.clkr = {
+		.enable_reg = 0x3010,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "video_cc_mvs0_core_clk",
+			.parent_hws = (const struct clk_hw*[]) {
+				&video_cc_iris_clk_src.clkr.hw,
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch video_cc_mvsc_core_clk = {
+	.halt_reg = 0x2014,
+	.halt_check = BRANCH_HALT,
+	.clkr = {
+		.enable_reg = 0x2014,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "video_cc_mvsc_core_clk",
+			.parent_hws = (const struct clk_hw*[]) {
+				&video_cc_iris_clk_src.clkr.hw,
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch video_cc_mvsc_ctl_axi_clk = {
+	.halt_reg = 0x8004,
+	.halt_check = BRANCH_HALT,
+	.clkr = {
+		.enable_reg = 0x8004,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "video_cc_mvsc_ctl_axi_clk",
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch video_cc_sleep_clk = {
+	.halt_reg = 0x7034,
+	.halt_check = BRANCH_HALT,
+	.clkr = {
+		.enable_reg = 0x7034,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "video_cc_sleep_clk",
+			.parent_hws = (const struct clk_hw*[]) {
+				&video_cc_sleep_clk_src.clkr.hw,
+			},
+			.num_parents = 1,
+			.flags = CLK_SET_RATE_PARENT,
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct clk_branch video_cc_venus_ahb_clk = {
+	.halt_reg = 0x801c,
+	.halt_check = BRANCH_HALT,
+	.clkr = {
+		.enable_reg = 0x801c,
+		.enable_mask = BIT(0),
+		.hw.init = &(const struct clk_init_data) {
+			.name = "video_cc_venus_ahb_clk",
+			.ops = &clk_branch2_ops,
+		},
+	},
+};
+
+static struct gdsc mvsc_gdsc = {
+	.gdscr = 0x2004,
+	.en_rest_wait_val = 0x2,
+	.en_few_wait_val = 0x2,
+	.clk_dis_wait_val = 0x6,
+	.pd = {
+		.name = "mvsc_gdsc",
+	},
+	.pwrsts = PWRSTS_OFF_ON,
+};
+
+static struct gdsc mvs0_gdsc = {
+	.gdscr = 0x3004,
+	.en_rest_wait_val = 0x2,
+	.en_few_wait_val = 0x2,
+	.clk_dis_wait_val = 0x6,
+	.pd = {
+		.name = "mvs0_gdsc",
+	},
+	.pwrsts = PWRSTS_OFF_ON,
+	.flags = HW_CTRL_TRIGGER,
+};
+
+static struct gdsc *video_cc_sm6350_gdscs[] = {
+	[MVSC_GDSC] = &mvsc_gdsc,
+	[MVS0_GDSC] = &mvs0_gdsc,
+};
+
+static struct clk_regmap *video_cc_sm6350_clocks[] = {
+	[VIDEO_CC_IRIS_AHB_CLK] = &video_cc_iris_ahb_clk.clkr,
+	[VIDEO_CC_IRIS_CLK_SRC] = &video_cc_iris_clk_src.clkr,
+	[VIDEO_CC_MVS0_AXI_CLK] = &video_cc_mvs0_axi_clk.clkr,
+	[VIDEO_CC_MVS0_CORE_CLK] = &video_cc_mvs0_core_clk.clkr,
+	[VIDEO_CC_MVSC_CORE_CLK] = &video_cc_mvsc_core_clk.clkr,
+	[VIDEO_CC_MVSC_CTL_AXI_CLK] = &video_cc_mvsc_ctl_axi_clk.clkr,
+	[VIDEO_CC_SLEEP_CLK] = &video_cc_sleep_clk.clkr,
+	[VIDEO_CC_SLEEP_CLK_SRC] = &video_cc_sleep_clk_src.clkr,
+	[VIDEO_CC_VENUS_AHB_CLK] = &video_cc_venus_ahb_clk.clkr,
+	[VIDEO_PLL0] = &video_pll0.clkr,
+	[VIDEO_PLL0_OUT_EVEN] = &video_pll0_out_even.clkr,
+};
+
+static const struct regmap_config video_cc_sm6350_regmap_config = {
+	.reg_bits = 32,
+	.reg_stride = 4,
+	.val_bits = 32,
+	.max_register = 0xb000,
+	.fast_io = true,
+};
+
+static const struct qcom_cc_desc video_cc_sm6350_desc = {
+	.config = &video_cc_sm6350_regmap_config,
+	.clks = video_cc_sm6350_clocks,
+	.num_clks = ARRAY_SIZE(video_cc_sm6350_clocks),
+	.gdscs = video_cc_sm6350_gdscs,
+	.num_gdscs = ARRAY_SIZE(video_cc_sm6350_gdscs),
+};
+
+static const struct of_device_id video_cc_sm6350_match_table[] = {
+	{ .compatible = "qcom,sm6350-videocc" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, video_cc_sm6350_match_table);
+
+static int video_cc_sm6350_probe(struct platform_device *pdev)
+{
+	struct regmap *regmap;
+
+	regmap = qcom_cc_map(pdev, &video_cc_sm6350_desc);
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
+
+	clk_fabia_pll_configure(&video_pll0, regmap, &video_pll0_config);
+
+	/* Keep some clocks always-on */
+	qcom_branch_set_clk_en(regmap, 0x7018); /* VIDEO_CC_XO_CLK */
+
+	return qcom_cc_really_probe(&pdev->dev, &video_cc_sm6350_desc, regmap);
+}
+
+static struct platform_driver video_cc_sm6350_driver = {
+	.probe = video_cc_sm6350_probe,
+	.driver = {
+		.name = "video_cc-sm6350",
+		.of_match_table = video_cc_sm6350_match_table,
+	},
+};
+
+module_platform_driver(video_cc_sm6350_driver);
+
+MODULE_DESCRIPTION("QTI VIDEO_CC SM6350 Driver");
+MODULE_LICENSE("GPL");