linux-zen-server/drivers/clk/mediatek/clk-mt6795-mm.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2022 Collabora Ltd.
 * Author: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
 */

#include <dt-bindings/clock/mediatek,mt6795-clk.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include "clk-gate.h"
#include "clk-mtk.h"

#define GATE_MM0(_id, _name, _parent, _shift)	\
	GATE_MTK(_id, _name, _parent, &mm0_cg_regs, _shift, &mtk_clk_gate_ops_setclr)

#define GATE_MM1(_id, _name, _parent, _shift)	\
	GATE_MTK(_id, _name, _parent, &mm1_cg_regs, _shift, &mtk_clk_gate_ops_setclr)

static const struct mtk_gate_regs mm0_cg_regs = {
	.set_ofs = 0x0104,
	.clr_ofs = 0x0108,
	.sta_ofs = 0x0100,
};

static const struct mtk_gate_regs mm1_cg_regs = {
	.set_ofs = 0x0114,
	.clr_ofs = 0x0118,
	.sta_ofs = 0x0110,
};

static const struct mtk_gate mm_gates[] = {
	/* MM0 */
	GATE_MM0(CLK_MM_SMI_COMMON, "mm_smi_common", "mm_sel", 0),
	GATE_MM0(CLK_MM_SMI_LARB0, "mm_smi_larb0", "mm_sel", 1),
	GATE_MM0(CLK_MM_CAM_MDP, "mm_cam_mdp", "mm_sel", 2),
	GATE_MM0(CLK_MM_MDP_RDMA0, "mm_mdp_rdma0", "mm_sel", 3),
	GATE_MM0(CLK_MM_MDP_RDMA1, "mm_mdp_rdma1", "mm_sel", 4),
	GATE_MM0(CLK_MM_MDP_RSZ0, "mm_mdp_rsz0", "mm_sel", 5),
	GATE_MM0(CLK_MM_MDP_RSZ1, "mm_mdp_rsz1", "mm_sel", 6),
	GATE_MM0(CLK_MM_MDP_RSZ2, "mm_mdp_rsz2", "mm_sel", 7),
	GATE_MM0(CLK_MM_MDP_TDSHP0, "mm_mdp_tdshp0", "mm_sel", 8),
	GATE_MM0(CLK_MM_MDP_TDSHP1, "mm_mdp_tdshp1", "mm_sel", 9),
	GATE_MM0(CLK_MM_MDP_CROP, "mm_mdp_crop", "mm_sel", 10),
	GATE_MM0(CLK_MM_MDP_WDMA, "mm_mdp_wdma", "mm_sel", 11),
	GATE_MM0(CLK_MM_MDP_WROT0, "mm_mdp_wrot0", "mm_sel", 12),
	GATE_MM0(CLK_MM_MDP_WROT1, "mm_mdp_wrot1", "mm_sel", 13),
	GATE_MM0(CLK_MM_FAKE_ENG, "mm_fake_eng", "mm_sel", 14),
	GATE_MM0(CLK_MM_MUTEX_32K, "mm_mutex_32k", "clk32k", 15),
	GATE_MM0(CLK_MM_DISP_OVL0, "mm_disp_ovl0", "mm_sel", 16),
	GATE_MM0(CLK_MM_DISP_OVL1, "mm_disp_ovl1", "mm_sel", 17),
	GATE_MM0(CLK_MM_DISP_RDMA0, "mm_disp_rdma0", "mm_sel", 18),
	GATE_MM0(CLK_MM_DISP_RDMA1, "mm_disp_rdma1", "mm_sel", 19),
	GATE_MM0(CLK_MM_DISP_RDMA2, "mm_disp_rdma2", "mm_sel", 20),
	GATE_MM0(CLK_MM_DISP_WDMA0, "mm_disp_wdma0", "mm_sel", 21),
	GATE_MM0(CLK_MM_DISP_WDMA1, "mm_disp_wdma1", "mm_sel", 22),
	GATE_MM0(CLK_MM_DISP_COLOR0, "mm_disp_color0", "mm_sel", 23),
	GATE_MM0(CLK_MM_DISP_COLOR1, "mm_disp_color1", "mm_sel", 24),
	GATE_MM0(CLK_MM_DISP_AAL, "mm_disp_aal", "mm_sel", 25),
	GATE_MM0(CLK_MM_DISP_GAMMA, "mm_disp_gamma", "mm_sel", 26),
	GATE_MM0(CLK_MM_DISP_UFOE, "mm_disp_ufoe", "mm_sel", 27),
	GATE_MM0(CLK_MM_DISP_SPLIT0, "mm_disp_split0", "mm_sel", 28),
	GATE_MM0(CLK_MM_DISP_SPLIT1, "mm_disp_split1", "mm_sel", 29),
	GATE_MM0(CLK_MM_DISP_MERGE, "mm_disp_merge", "mm_sel", 30),
	GATE_MM0(CLK_MM_DISP_OD, "mm_disp_od", "mm_sel", 31),

	/* MM1 */
	GATE_MM1(CLK_MM_DISP_PWM0MM, "mm_disp_pwm0mm", "mm_sel", 0),
	GATE_MM1(CLK_MM_DISP_PWM026M, "mm_disp_pwm026m", "pwm_sel", 1),
	GATE_MM1(CLK_MM_DISP_PWM1MM, "mm_disp_pwm1mm", "mm_sel", 2),
	GATE_MM1(CLK_MM_DISP_PWM126M, "mm_disp_pwm126m", "pwm_sel", 3),
	GATE_MM1(CLK_MM_DSI0_ENGINE, "mm_dsi0_engine", "mm_sel", 4),
	GATE_MM1(CLK_MM_DSI0_DIGITAL, "mm_dsi0_digital", "dsi0_dig", 5),
	GATE_MM1(CLK_MM_DSI1_ENGINE, "mm_dsi1_engine", "mm_sel", 6),
	GATE_MM1(CLK_MM_DSI1_DIGITAL, "mm_dsi1_digital", "dsi1_dig", 7),
	GATE_MM1(CLK_MM_DPI_PIXEL, "mm_dpi_pixel", "dpi0_sel", 8),
	GATE_MM1(CLK_MM_DPI_ENGINE, "mm_dpi_engine", "mm_sel", 9),
};

static int clk_mt6795_mm_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct device_node *node = dev->parent->of_node;
	struct clk_hw_onecell_data *clk_data;
	int ret;

	clk_data = mtk_alloc_clk_data(CLK_MM_NR_CLK);
	if (!clk_data)
		return -ENOMEM;

	ret = mtk_clk_register_gates(&pdev->dev, node, mm_gates,
				     ARRAY_SIZE(mm_gates), clk_data);
	if (ret)
		goto free_clk_data;

	ret = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
	if (ret)
		goto unregister_gates;

	platform_set_drvdata(pdev, clk_data);

	return 0;

unregister_gates:
	mtk_clk_unregister_gates(mm_gates, ARRAY_SIZE(mm_gates), clk_data);
free_clk_data:
	mtk_free_clk_data(clk_data);
	return ret;
}

static int clk_mt6795_mm_remove(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct device_node *node = dev->parent->of_node;
	struct clk_hw_onecell_data *clk_data = platform_get_drvdata(pdev);

	of_clk_del_provider(node);
	mtk_clk_unregister_gates(mm_gates, ARRAY_SIZE(mm_gates), clk_data);
	mtk_free_clk_data(clk_data);

	return 0;
}

static struct platform_driver clk_mt6795_mm_drv = {
	.driver = {
		.name = "clk-mt6795-mm",
	},
	.probe = clk_mt6795_mm_probe,
	.remove = clk_mt6795_mm_remove,
};
module_platform_driver(clk_mt6795_mm_drv);

MODULE_DESCRIPTION("MediaTek MT6795 MultiMedia clocks driver");
MODULE_LICENSE("GPL");