drivers/clk/qcom/videocc-sm8150.c

Source file repositories/reference/linux-study-clean/drivers/clk/qcom/videocc-sm8150.c

File Facts

System
Linux kernel
Corpus path
drivers/clk/qcom/videocc-sm8150.c
Extension
.c
Size
6931 bytes
Lines
284
Domain
Driver Families
Bucket
drivers/clk
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
 */

#include <linux/clk-provider.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>

#include <dt-bindings/clock/qcom,videocc-sm8150.h>

#include "common.h"
#include "clk-alpha-pll.h"
#include "clk-branch.h"
#include "clk-rcg.h"
#include "clk-regmap.h"
#include "reset.h"
#include "gdsc.h"

enum {
	P_BI_TCXO,
	P_VIDEO_PLL0_OUT_MAIN,
};

static const struct pll_vco trion_vco[] = {
	{ 249600000, 2000000000, 0 },
};

static struct alpha_pll_config video_pll0_config = {
	.l = 0x14,
	.alpha = 0xD555,
	.config_ctl_val = 0x20485699,
	.config_ctl_hi_val = 0x00002267,
	.config_ctl_hi1_val = 0x00000024,
	.test_ctl_hi1_val = 0x00000020,
	.user_ctl_val = 0x00000000,
	.user_ctl_hi_val = 0x00000805,
	.user_ctl_hi1_val = 0x000000D0,
};

static struct clk_alpha_pll video_pll0 = {
	.offset = 0x42c,
	.vco_table = trion_vco,
	.num_vco = ARRAY_SIZE(trion_vco),
	.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_TRION],
	.clkr = {
		.hw.init = &(struct clk_init_data){
			.name = "video_pll0",
			.parent_data = &(const struct clk_parent_data){
				.fw_name = "bi_tcxo",
			},
			.num_parents = 1,
			.ops = &clk_alpha_pll_trion_ops,
		},
	},
};

static const struct parent_map video_cc_parent_map_0[] = {
	{ P_BI_TCXO, 0 },
	{ P_VIDEO_PLL0_OUT_MAIN, 1 },
};

static const struct clk_parent_data video_cc_parent_data_0[] = {
	{ .fw_name = "bi_tcxo" },
	{ .hw = &video_pll0.clkr.hw },
};

static const struct freq_tbl ftbl_video_cc_iris_clk_src[] = {
	F(19200000, P_BI_TCXO, 1, 0, 0),
	F(200000000, P_VIDEO_PLL0_OUT_MAIN, 2, 0, 0),
	F(240000000, P_VIDEO_PLL0_OUT_MAIN, 2, 0, 0),
	F(338000000, P_VIDEO_PLL0_OUT_MAIN, 2, 0, 0),
	F(365000000, P_VIDEO_PLL0_OUT_MAIN, 2, 0, 0),
	F(444000000, P_VIDEO_PLL0_OUT_MAIN, 2, 0, 0),
	F(533000000, P_VIDEO_PLL0_OUT_MAIN, 2, 0, 0),
	{ }
};

static struct clk_rcg2 video_cc_iris_clk_src = {
	.cmd_rcgr = 0x7f0,
	.mnd_width = 0,
	.hid_width = 5,
	.parent_map = video_cc_parent_map_0,
	.freq_tbl = ftbl_video_cc_iris_clk_src,
	.clkr.hw.init = &(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),

Annotation

Implementation Notes