clk: qcom: Add video clock driver for ATOLL (35b9a994) · Commits · e / devices / android_kernel_xiaomi_nabu

Documentation/devicetree/bindings/clock/qcom,videocc.txt

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		@@ -3,7 +3,8 @@ Qualcomm Technologies, Inc. Video Clock & Reset Controller Bindings
		Required properties:
		- compatible: shall contain "qcom,videocc-sm8150" or "qcom,videocc-sm8150-v2" or
		"qcom,videocc-sm6150", "qcom,videocc-sdmmagpie" or
		"qcom,videocc-trinket" or "qcom,videocc-sa6155".
		"qcom,videocc-trinket" or "qcom,videocc-sa6155" or
		"qcom,atoll-videocc".
		- reg: shall contain base register location and length.
		- reg-names: names of registers listed in the same order as in the reg property.
		- vdd_<mm/cx>-supply: the logic rail supply which could be either MM or CX.

drivers/clk/qcom/Kconfig

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		@@ -587,3 +587,12 @@ config SM_CAMCC_ATOLL
		ATOLL devices.
		Say Y if you want to support camera devices and functionality such as
		capturing pictures.

		config SM_VIDEOCC_ATOLL
		tristate "ATOLL Video Clock Controller"
		depends on COMMON_CLK_QCOM
		help
		Support for the video clock controller on Qualcomm Technologies, Inc.
		ATOLL devices.
		Say Y if you want to support video devices and functionality such as
		video encode/decode.

drivers/clk/qcom/Makefile

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		@@ -78,6 +78,7 @@ obj-$(CONFIG_SM_DISPCC_TRINKET) += dispcc-trinket.o
		obj-$(CONFIG_SM_GCC_ATOLL) += gcc-atoll.o
		obj-$(CONFIG_SM_GCC_TRINKET) += gcc-trinket.o
		obj-$(CONFIG_SM_GPUCC_TRINKET) += gpucc-trinket.o
		obj-$(CONFIG_SM_VIDEOCC_ATOLL) += videocc-atoll.o
		obj-$(CONFIG_SM_VIDEOCC_TRINKET) += videocc-trinket.o
		obj-$(CONFIG_SPMI_PMIC_CLKDIV) += clk-spmi-pmic-div.o
		obj-$(CONFIG_VIRTIO_CLK) += virtio_clk.o virtio_clk_sm8150.o virtio_clk_sm6150.o virtio_clk_sa8195p.o

drivers/clk/qcom/videocc-atoll.c

0 → 100644

+326 −0

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		/*
		* Copyright (c) 2019, The Linux Foundation. All rights reserved.
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License version 2 and
		* only version 2 as published by the Free Software Foundation.
		*
		* This program is distributed in the hope that it will be useful,
		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		* GNU General Public License for more details.
		*/

		#define pr_fmt(fmt) "clk: %s: " fmt, __func__

		#include <linux/kernel.h>
		#include <linux/bitops.h>
		#include <linux/err.h>
		#include <linux/platform_device.h>
		#include <linux/module.h>
		#include <linux/of.h>
		#include <linux/of_device.h>
		#include <linux/clk.h>
		#include <linux/clk-provider.h>
		#include <linux/regmap.h>

		#include <dt-bindings/clock/qcom,videocc-atoll.h>

		#include "common.h"
		#include "clk-regmap.h"
		#include "clk-rcg.h"
		#include "clk-branch.h"
		#include "clk-alpha-pll.h"
		#include "vdd-level-sdmmagpie.h"

		#define F(f, s, h, m, n) { (f), (s), (2 * (h) - 1), (m), (n) }

		static DEFINE_VDD_REGULATORS(vdd_cx, VDD_NUM, 1, vdd_corner);

		enum {
		P_BI_TCXO,
		P_CHIP_SLEEP_CLK,
		P_CORE_BI_PLL_TEST_SE,
		P_VIDEO_PLL0_OUT_EVEN,
		P_VIDEO_PLL0_OUT_MAIN,
		P_VIDEO_PLL0_OUT_ODD,
		};

		static const struct parent_map video_cc_parent_map_0[] = {
		{ P_CHIP_SLEEP_CLK, 0 },
		{ P_CORE_BI_PLL_TEST_SE, 7 },
		};

		static const char * const video_cc_parent_names_0[] = {
		"chip_sleep_clk",
		"core_bi_pll_test_se",
		};

		static const struct parent_map video_cc_parent_map_1[] = {
		{ P_BI_TCXO, 0 },
		{ P_VIDEO_PLL0_OUT_MAIN, 1 },
		{ P_VIDEO_PLL0_OUT_EVEN, 2 },
		{ P_VIDEO_PLL0_OUT_ODD, 3 },
		{ P_CORE_BI_PLL_TEST_SE, 7 },
		};

		static const char * const video_cc_parent_names_1[] = {
		"bi_tcxo",
		"video_pll0",
		"video_pll0_out_even",
		"video_pll0_out_odd",
		"core_bi_pll_test_se",
		};

		static const struct parent_map video_cc_parent_map_2[] = {
		{ P_BI_TCXO, 0 },
		{ P_CORE_BI_PLL_TEST_SE, 7 },
		};

		static const char * const video_cc_parent_names_2[] = {
		"bi_tcxo",
		"core_bi_pll_test_se",
		};

		static struct pll_vco fabia_vco[] = {
		{ 249600000, 2000000000, 0 },
		{ 125000000, 1000000000, 1 },
		};

		static struct alpha_pll_config video_pll0_config = {
		.l = 0x1F,
		.frac = 0x4000,
		.user_ctl_val = 0x00000001,
		.user_ctl_hi_val = 0x00004805,
		};

		static struct clk_alpha_pll video_pll0 = {
		.offset = 0x42c,
		.vco_table = fabia_vco,
		.num_vco = ARRAY_SIZE(fabia_vco),
		.type = FABIA_PLL,
		.clkr = {
		.hw.init = &(struct clk_init_data){
		.name = "video_pll0",
		.parent_names = (const char *[]){ "bi_tcxo" },
		.num_parents = 1,
		.ops = &clk_fabia_pll_ops,
		.vdd_class = &vdd_cx,
		.num_rate_max = VDD_NUM,
		.rate_max = (unsigned long[VDD_NUM]) {
		[VDD_MIN] = 615000000,
		[VDD_LOW] = 1066000000,
		[VDD_LOW_L1] = 1600000000,
		[VDD_NOMINAL] = 2000000000},
		},
		},
		};

		static const struct freq_tbl ftbl_video_cc_venus_clk_src[] = {
		F(19200000, P_BI_TCXO, 1, 0, 0),
		F(150000000, P_VIDEO_PLL0_OUT_MAIN, 4, 0, 0),
		F(270000000, P_VIDEO_PLL0_OUT_MAIN, 2.5, 0, 0),
		F(340000000, P_VIDEO_PLL0_OUT_MAIN, 2, 0, 0),
		F(434000000, P_VIDEO_PLL0_OUT_MAIN, 2, 0, 0),
		F(500000000, P_VIDEO_PLL0_OUT_MAIN, 2, 0, 0),
		{ }
		};

		static struct clk_rcg2 video_cc_venus_clk_src = {
		.cmd_rcgr = 0x7f0,
		.mnd_width = 0,
		.hid_width = 5,
		.parent_map = video_cc_parent_map_1,
		.freq_tbl = ftbl_video_cc_venus_clk_src,
		.enable_safe_config = true,
		.clkr.hw.init = &(struct clk_init_data){
		.name = "video_cc_venus_clk_src",
		.parent_names = video_cc_parent_names_1,
		.num_parents = 5,
		.flags = CLK_SET_RATE_PARENT,
		.ops = &clk_rcg2_ops,
		.vdd_class = &vdd_cx,
		.num_rate_max = VDD_NUM,
		.rate_max = (unsigned long[VDD_NUM]) {
		[VDD_LOWER] = 150000000,
		[VDD_LOW] = 270000000,
		[VDD_LOW_L1] = 340000000,
		[VDD_NOMINAL] = 434000000,
		[VDD_HIGH] = 500000000},
		},
		};

		static struct clk_branch video_cc_vcodec0_axi_clk = {
		.halt_reg = 0x9ec,
		.halt_check = BRANCH_HALT,
		.clkr = {
		.enable_reg = 0x9ec,
		.enable_mask = BIT(0),
		.hw.init = &(struct clk_init_data){
		.name = "video_cc_vcodec0_axi_clk",
		.ops = &clk_branch2_ops,
		},
		},
		};

		static struct clk_branch video_cc_vcodec0_core_clk = {
		.halt_reg = 0x890,
		.halt_check = BRANCH_HALT,
		.clkr = {
		.enable_reg = 0x890,
		.enable_mask = BIT(0),
		.hw.init = &(struct clk_init_data){
		.name = "video_cc_vcodec0_core_clk",
		.parent_names = (const char *[]){
		"video_cc_venus_clk_src",
		},
		.num_parents = 1,
		.flags = CLK_SET_RATE_PARENT,
		.ops = &clk_branch2_ops,
		},
		},
		};

		static struct clk_branch video_cc_venus_ahb_clk = {
		.halt_reg = 0xa4c,
		.halt_check = BRANCH_HALT,
		.clkr = {
		.enable_reg = 0xa4c,
		.enable_mask = BIT(0),
		.hw.init = &(struct clk_init_data){
		.name = "video_cc_venus_ahb_clk",
		.ops = &clk_branch2_ops,
		},
		},
		};

		static struct clk_branch video_cc_venus_ctl_axi_clk = {
		.halt_reg = 0x9cc,
		.halt_check = BRANCH_HALT,
		.clkr = {
		.enable_reg = 0x9cc,
		.enable_mask = BIT(0),
		.hw.init = &(struct clk_init_data){
		.name = "video_cc_venus_ctl_axi_clk",
		.ops = &clk_branch2_ops,
		},
		},
		};

		static struct clk_branch video_cc_venus_ctl_core_clk = {
		.halt_reg = 0x850,
		.halt_check = BRANCH_HALT,
		.clkr = {
		.enable_reg = 0x850,
		.enable_mask = BIT(0),
		.hw.init = &(struct clk_init_data){
		.name = "video_cc_venus_ctl_core_clk",
		.parent_names = (const char *[]){
		"video_cc_venus_clk_src",
		},
		.num_parents = 1,
		.flags = CLK_SET_RATE_PARENT,
		.ops = &clk_branch2_ops,
		},
		},
		};

		static struct clk_branch video_cc_xo_clk = {
		.halt_reg = 0x984,
		.halt_check = BRANCH_HALT,
		.clkr = {
		.enable_reg = 0x984,
		.enable_mask = BIT(0),
		.hw.init = &(struct clk_init_data){
		.name = "video_cc_xo_clk",
		.flags = CLK_IS_CRITICAL,
		.ops = &clk_branch2_ops,
		},
		},
		};

		static struct clk_regmap *video_cc_atoll_clocks[] = {
		[VIDEO_CC_VCODEC0_AXI_CLK] = &video_cc_vcodec0_axi_clk.clkr,
		[VIDEO_CC_VCODEC0_CORE_CLK] = &video_cc_vcodec0_core_clk.clkr,
		[VIDEO_CC_VENUS_AHB_CLK] = &video_cc_venus_ahb_clk.clkr,
		[VIDEO_CC_VENUS_CLK_SRC] = &video_cc_venus_clk_src.clkr,
		[VIDEO_CC_VENUS_CTL_AXI_CLK] = &video_cc_venus_ctl_axi_clk.clkr,
		[VIDEO_CC_VENUS_CTL_CORE_CLK] = &video_cc_venus_ctl_core_clk.clkr,
		[VIDEO_CC_XO_CLK] = &video_cc_xo_clk.clkr,
		[VIDEO_PLL0] = &video_pll0.clkr,
		};

		static const struct regmap_config video_cc_atoll_regmap_config = {
		.reg_bits = 32,
		.reg_stride = 4,
		.val_bits = 32,
		.max_register = 0xb94,
		.fast_io = true,
		};

		static const struct qcom_cc_desc video_cc_atoll_desc = {
		.config = &video_cc_atoll_regmap_config,
		.clks = video_cc_atoll_clocks,
		.num_clks = ARRAY_SIZE(video_cc_atoll_clocks),
		};

		static const struct of_device_id video_cc_atoll_match_table[] = {
		{ .compatible = "qcom,atoll-videocc" },
		{ }
		};
		MODULE_DEVICE_TABLE(of, video_cc_atoll_match_table);

		static int video_cc_atoll_probe(struct platform_device *pdev)
		{
		struct regmap *regmap;
		int ret;

		vdd_cx.regulator[0] = devm_regulator_get(&pdev->dev, "vdd_cx");
		if (IS_ERR(vdd_cx.regulator[0])) {
		if (PTR_ERR(vdd_cx.regulator[0]) != -EPROBE_DEFER)
		dev_err(&pdev->dev,
		"Unable to get vdd_cx regulator\n");
		return PTR_ERR(vdd_cx.regulator[0]);
		}

		regmap = qcom_cc_map(pdev, &video_cc_atoll_desc);
		if (IS_ERR(regmap)) {
		pr_err("Failed to map the video_cc registers\n");
		return PTR_ERR(regmap);
		}

		clk_fabia_pll_configure(&video_pll0, regmap, &video_pll0_config);

		ret = qcom_cc_really_probe(pdev, &video_cc_atoll_desc, regmap);
		if (ret) {
		dev_err(&pdev->dev, "Failed to register Video CC clocks\n");
		return ret;
		}

		dev_info(&pdev->dev, "Registered Video CC clocks\n");
		return ret;
		}

		static struct platform_driver video_cc_atoll_driver = {
		.probe = video_cc_atoll_probe,
		.driver = {
		.name = "atoll-videocc",
		.of_match_table = video_cc_atoll_match_table,
		},
		};

		static int __init video_cc_atoll_init(void)
		{
		return platform_driver_register(&video_cc_atoll_driver);
		}
		subsys_initcall(video_cc_atoll_init);

		static void __exit video_cc_atoll_exit(void)
		{
		platform_driver_unregister(&video_cc_atoll_driver);
		}
		module_exit(video_cc_atoll_exit);

		MODULE_DESCRIPTION("QTI VIDEO_CC atoll Driver");
		MODULE_LICENSE("GPL v2");
		MODULE_ALIAS("platform:video_cc-atoll");

include/dt-bindings/clock/qcom,videocc-atoll.h

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		@@ -15,16 +15,13 @@
		#define _DT_BINDINGS_CLK_QCOM_VIDEO_CC_ATOLL_H

		/* VIDEO_CC clocks */
		#define VIDEO_PLL0_OUT_MAIN 0
		#define VIDEO_CC_APB_CLK 1
		#define VIDEO_CC_SLEEP_CLK 2
		#define VIDEO_CC_SLEEP_CLK_SRC 3
		#define VIDEO_CC_VCODEC0_AXI_CLK 4
		#define VIDEO_CC_VCODEC0_CORE_CLK 5
		#define VIDEO_CC_VENUS_AHB_CLK 6
		#define VIDEO_CC_VENUS_CLK_SRC 7
		#define VIDEO_CC_VENUS_CTL_AXI_CLK 8
		#define VIDEO_CC_VENUS_CTL_CORE_CLK 9
		#define VIDEO_CC_XO_CLK 10
		#define VIDEO_PLL0 0
		#define VIDEO_CC_VCODEC0_AXI_CLK 1
		#define VIDEO_CC_VCODEC0_CORE_CLK 2
		#define VIDEO_CC_VENUS_AHB_CLK 3
		#define VIDEO_CC_VENUS_CLK_SRC 4
		#define VIDEO_CC_VENUS_CTL_AXI_CLK 5
		#define VIDEO_CC_VENUS_CTL_CORE_CLK 6
		#define VIDEO_CC_XO_CLK 7

		#endif