drivers/clk/qcom/videocc-milos.c

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

File Facts

System
Linux kernel
Corpus path
drivers/clk/qcom/videocc-milos.c
Extension
.c
Size
10582 bytes
Lines
404
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) 2023, Qualcomm Innovation Center, Inc. All rights reserved.
 * Copyright (c) 2025, Luca Weiss <luca.weiss@fairphone.com>
 */

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

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

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

/* Need to match the order of clocks in DT binding */
enum {
	DT_BI_TCXO,
	DT_BI_TCXO_AO,
	DT_SLEEP_CLK,
	DT_IFACE,
};

enum {
	P_BI_TCXO,
	P_SLEEP_CLK,
	P_VIDEO_CC_PLL0_OUT_MAIN,
};

static const struct pll_vco lucid_ole_vco[] = {
	{ 249600000, 2300000000, 0 },
};

/* 604.8 MHz Configuration */
static const struct alpha_pll_config video_cc_pll0_config = {
	.l = 0x1f,
	.alpha = 0x8000,
	.config_ctl_val = 0x20485699,
	.config_ctl_hi_val = 0x00182261,
	.config_ctl_hi1_val = 0x82aa299c,
	.test_ctl_val = 0x00000000,
	.test_ctl_hi_val = 0x00000003,
	.test_ctl_hi1_val = 0x00009000,
	.test_ctl_hi2_val = 0x00000034,
	.user_ctl_val = 0x00000000,
	.user_ctl_hi_val = 0x00000005,
};

static struct clk_alpha_pll video_cc_pll0 = {
	.offset = 0x0,
	.config = &video_cc_pll0_config,
	.vco_table = lucid_ole_vco,
	.num_vco = ARRAY_SIZE(lucid_ole_vco),
	.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_LUCID_OLE],
	.clkr = {
		.hw.init = &(const struct clk_init_data) {
			.name = "video_cc_pll0",
			.parent_data = &(const struct clk_parent_data) {
				.index = DT_BI_TCXO,
			},
			.num_parents = 1,
			.ops = &clk_alpha_pll_lucid_evo_ops,
		},
	},
};

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

static const struct clk_parent_data video_cc_parent_data_0[] = {
	{ .index = DT_BI_TCXO },
};

static const struct clk_parent_data video_cc_parent_data_0_ao[] = {
	{ .index = DT_BI_TCXO_AO },
};

static const struct parent_map video_cc_parent_map_1[] = {
	{ P_BI_TCXO, 0 },
	{ P_VIDEO_CC_PLL0_OUT_MAIN, 1 },
};

Annotation

Implementation Notes