drivers/clk/qcom/camcc-sc7280.c

Source file repositories/reference/linux-study-clean/drivers/clk/qcom/camcc-sc7280.c

File Facts

System
Linux kernel
Corpus path
drivers/clk/qcom/camcc-sc7280.c
Extension
.c
Size
66525 bytes
Lines
2499
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) 2021, The Linux Foundation. All rights reserved.
 * Copyright (c) 2024, Qualcomm Innovation Center, Inc. All rights reserved.
 */

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

#include <dt-bindings/clock/qcom,camcc-sc7280.h>

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

enum {
	P_BI_TCXO,
	P_CAM_CC_PLL0_OUT_EVEN,
	P_CAM_CC_PLL0_OUT_MAIN,
	P_CAM_CC_PLL0_OUT_ODD,
	P_CAM_CC_PLL1_OUT_EVEN,
	P_CAM_CC_PLL2_OUT_AUX2,
	P_CAM_CC_PLL2_OUT_EARLY,
	P_CAM_CC_PLL3_OUT_EVEN,
	P_CAM_CC_PLL4_OUT_EVEN,
	P_CAM_CC_PLL5_OUT_EVEN,
	P_CAM_CC_PLL6_OUT_EVEN,
	P_CAM_CC_PLL6_OUT_MAIN,
	P_CAM_CC_PLL6_OUT_ODD,
	P_SLEEP_CLK,
};

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

static struct pll_vco zonda_vco[] = {
	{ 595200000UL, 3600000000UL, 0 },
};

/* 1200MHz Configuration */
static const struct alpha_pll_config cam_cc_pll0_config = {
	.l = 0x3E,
	.alpha = 0x8000,
	.config_ctl_val = 0x20485699,
	.config_ctl_hi_val = 0x00002261,
	.config_ctl_hi1_val = 0x329A299C,
	.user_ctl_val = 0x00003101,
	.user_ctl_hi_val = 0x00000805,
	.user_ctl_hi1_val = 0x00000000,
};

static struct clk_alpha_pll cam_cc_pll0 = {
	.offset = 0x0,
	.vco_table = lucid_vco,
	.num_vco = ARRAY_SIZE(lucid_vco),
	.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_LUCID],
	.clkr = {
		.hw.init = &(struct clk_init_data){
			.name = "cam_cc_pll0",
			.parent_data = &(const struct clk_parent_data){
				.fw_name = "bi_tcxo",
			},
			.num_parents = 1,
			.ops = &clk_alpha_pll_lucid_ops,
		},
	},
};

static const struct clk_div_table post_div_table_cam_cc_pll0_out_even[] = {
	{ 0x1, 2 },
	{ }
};

static struct clk_alpha_pll_postdiv cam_cc_pll0_out_even = {
	.offset = 0x0,
	.post_div_shift = 8,
	.post_div_table = post_div_table_cam_cc_pll0_out_even,
	.num_post_div = ARRAY_SIZE(post_div_table_cam_cc_pll0_out_even),
	.width = 4,
	.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_LUCID],
	.clkr.hw.init = &(struct clk_init_data){

Annotation

Implementation Notes