linux_kernel/drivers/clk/mediatek/clk-mt2701-mm.c

/*
 * Copyright (c) 2014 MediaTek Inc.
 * Author: Shunli Wang <shunli.wang@mediatek.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License 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.
 */

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

#include "clk-mtk.h"
#include "clk-gate.h"

#include <dt-bindings/clock/mt2701-clk.h>

static const struct mtk_gate_regs disp0_cg_regs = {
	.set_ofs = 0x0104,
	.clr_ofs = 0x0108,
	.sta_ofs = 0x0100,
};

static const struct mtk_gate_regs disp1_cg_regs = {
	.set_ofs = 0x0114,
	.clr_ofs = 0x0118,
	.sta_ofs = 0x0110,
};

#define GATE_DISP0(_id, _name, _parent, _shift) {	\
		.id = _id,				\
		.name = _name,				\
		.parent_name = _parent,			\
		.regs = &disp0_cg_regs,			\
		.shift = _shift,			\
		.ops = &mtk_clk_gate_ops_setclr,	\
	}

#define GATE_DISP1(_id, _name, _parent, _shift) {	\
		.id = _id,				\
		.name = _name,				\
		.parent_name = _parent,			\
		.regs = &disp1_cg_regs,			\
		.shift = _shift,			\
		.ops = &mtk_clk_gate_ops_setclr,	\
	}

static const struct mtk_gate mm_clks[] = {
	GATE_DISP0(CLK_MM_SMI_COMMON, "mm_smi_comm", "mm_sel", 0),
	GATE_DISP0(CLK_MM_SMI_LARB0, "mm_smi_larb0", "mm_sel", 1),
	GATE_DISP0(CLK_MM_CMDQ, "mm_cmdq", "mm_sel", 2),
	GATE_DISP0(CLK_MM_MUTEX, "mm_mutex", "mm_sel", 3),
	GATE_DISP0(CLK_MM_DISP_COLOR, "mm_disp_color", "mm_sel", 4),
	GATE_DISP0(CLK_MM_DISP_BLS, "mm_disp_bls", "mm_sel", 5),
	GATE_DISP0(CLK_MM_DISP_WDMA, "mm_disp_wdma", "mm_sel", 6),
	GATE_DISP0(CLK_MM_DISP_RDMA, "mm_disp_rdma", "mm_sel", 7),
	GATE_DISP0(CLK_MM_DISP_OVL, "mm_disp_ovl", "mm_sel", 8),
	GATE_DISP0(CLK_MM_MDP_TDSHP, "mm_mdp_tdshp", "mm_sel", 9),
	GATE_DISP0(CLK_MM_MDP_WROT, "mm_mdp_wrot", "mm_sel", 10),
	GATE_DISP0(CLK_MM_MDP_WDMA, "mm_mdp_wdma", "mm_sel", 11),
	GATE_DISP0(CLK_MM_MDP_RSZ1, "mm_mdp_rsz1", "mm_sel", 12),
	GATE_DISP0(CLK_MM_MDP_RSZ0, "mm_mdp_rsz0", "mm_sel", 13),
	GATE_DISP0(CLK_MM_MDP_RDMA, "mm_mdp_rdma", "mm_sel", 14),
	GATE_DISP0(CLK_MM_MDP_BLS_26M, "mm_mdp_bls_26m", "pwm_sel", 15),
	GATE_DISP0(CLK_MM_CAM_MDP, "mm_cam_mdp", "mm_sel", 16),
	GATE_DISP0(CLK_MM_FAKE_ENG, "mm_fake_eng", "mm_sel", 17),
	GATE_DISP0(CLK_MM_MUTEX_32K, "mm_mutex_32k", "rtc_sel", 18),
	GATE_DISP0(CLK_MM_DISP_RDMA1, "mm_disp_rdma1", "mm_sel", 19),
	GATE_DISP0(CLK_MM_DISP_UFOE, "mm_disp_ufoe", "mm_sel", 20),
	GATE_DISP1(CLK_MM_DSI_ENGINE, "mm_dsi_eng", "mm_sel", 0),
	GATE_DISP1(CLK_MM_DSI_DIG, "mm_dsi_dig", "dsi0_lntc_dsi", 1),
	GATE_DISP1(CLK_MM_DPI_DIGL, "mm_dpi_digl", "dpi0_sel", 2),
	GATE_DISP1(CLK_MM_DPI_ENGINE, "mm_dpi_eng", "mm_sel", 3),
	GATE_DISP1(CLK_MM_DPI1_DIGL, "mm_dpi1_digl", "dpi1_sel", 4),
	GATE_DISP1(CLK_MM_DPI1_ENGINE, "mm_dpi1_eng", "mm_sel", 5),
	GATE_DISP1(CLK_MM_TVE_OUTPUT, "mm_tve_output", "tve_sel", 6),
	GATE_DISP1(CLK_MM_TVE_INPUT, "mm_tve_input", "dpi0_sel", 7),
	GATE_DISP1(CLK_MM_HDMI_PIXEL, "mm_hdmi_pixel", "dpi1_sel", 8),
	GATE_DISP1(CLK_MM_HDMI_PLL, "mm_hdmi_pll", "hdmi_sel", 9),
	GATE_DISP1(CLK_MM_HDMI_AUDIO, "mm_hdmi_audio", "apll_sel", 10),
	GATE_DISP1(CLK_MM_HDMI_SPDIF, "mm_hdmi_spdif", "apll_sel", 11),
	GATE_DISP1(CLK_MM_TVE_FMM, "mm_tve_fmm", "mm_sel", 14),
};

static const struct of_device_id of_match_clk_mt2701_mm[] = {
	{ .compatible = "mediatek,mt2701-mmsys", },
	{}
};

static int clk_mt2701_mm_probe(struct platform_device *pdev)
{
	struct clk_onecell_data *clk_data;
	int r;
	struct device_node *node = pdev->dev.of_node;

	clk_data = mtk_alloc_clk_data(CLK_MM_NR);

	mtk_clk_register_gates(node, mm_clks, ARRAY_SIZE(mm_clks),
						clk_data);

	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
	if (r)
		dev_err(&pdev->dev,
			"could not register clock provider: %s: %d\n",
			pdev->name, r);

	return r;
}

static struct platform_driver clk_mt2701_mm_drv = {
	.probe = clk_mt2701_mm_probe,
	.driver = {
		.name = "clk-mt2701-mm",
		.of_match_table = of_match_clk_mt2701_mm,
	},
};

builtin_platform_driver(clk_mt2701_mm_drv);