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

   1 /*
   2  * Copyright (c) 2014 MediaTek Inc.
   3  * Author: Shunli Wang <shunli.wang@mediatek.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include <linux/clk-provider.h>
  16 #include <linux/platform_device.h>
  17
  18 #include "clk-mtk.h"
  19 #include "clk-gate.h"
  20
  21 #include <dt-bindings/clock/mt2701-clk.h>
  22
  23 static const struct mtk_gate_regs disp0_cg_regs = {
  24         .set_ofs = 0x0104,
  25         .clr_ofs = 0x0108,
  26         .sta_ofs = 0x0100,
  27 };
  28
  29 static const struct mtk_gate_regs disp1_cg_regs = {
  30         .set_ofs = 0x0114,
  31         .clr_ofs = 0x0118,
  32         .sta_ofs = 0x0110,
  33 };
  34
  35 #define GATE_DISP0(_id, _name, _parent, _shift) {       \
  36                 .id = _id,                              \
  37                 .name = _name,                          \
  38                 .parent_name = _parent,                 \
  39                 .regs = &disp0_cg_regs,                 \
  40                 .shift = _shift,                        \
  41                 .ops = &mtk_clk_gate_ops_setclr,        \
  42         }
  43
  44 #define GATE_DISP1(_id, _name, _parent, _shift) {       \
  45                 .id = _id,                              \
  46                 .name = _name,                          \
  47                 .parent_name = _parent,                 \
  48                 .regs = &disp1_cg_regs,                 \
  49                 .shift = _shift,                        \
  50                 .ops = &mtk_clk_gate_ops_setclr,        \
  51         }
  52
  53 static const struct mtk_gate mm_clks[] = {
  54         GATE_DISP0(CLK_MM_SMI_COMMON, "mm_smi_comm", "mm_sel", 0),
  55         GATE_DISP0(CLK_MM_SMI_LARB0, "mm_smi_larb0", "mm_sel", 1),
  56         GATE_DISP0(CLK_MM_CMDQ, "mm_cmdq", "mm_sel", 2),
  57         GATE_DISP0(CLK_MM_MUTEX, "mm_mutex", "mm_sel", 3),
  58         GATE_DISP0(CLK_MM_DISP_COLOR, "mm_disp_color", "mm_sel", 4),
  59         GATE_DISP0(CLK_MM_DISP_BLS, "mm_disp_bls", "mm_sel", 5),
  60         GATE_DISP0(CLK_MM_DISP_WDMA, "mm_disp_wdma", "mm_sel", 6),
  61         GATE_DISP0(CLK_MM_DISP_RDMA, "mm_disp_rdma", "mm_sel", 7),
  62         GATE_DISP0(CLK_MM_DISP_OVL, "mm_disp_ovl", "mm_sel", 8),
  63         GATE_DISP0(CLK_MM_MDP_TDSHP, "mm_mdp_tdshp", "mm_sel", 9),
  64         GATE_DISP0(CLK_MM_MDP_WROT, "mm_mdp_wrot", "mm_sel", 10),
  65         GATE_DISP0(CLK_MM_MDP_WDMA, "mm_mdp_wdma", "mm_sel", 11),
  66         GATE_DISP0(CLK_MM_MDP_RSZ1, "mm_mdp_rsz1", "mm_sel", 12),
  67         GATE_DISP0(CLK_MM_MDP_RSZ0, "mm_mdp_rsz0", "mm_sel", 13),
  68         GATE_DISP0(CLK_MM_MDP_RDMA, "mm_mdp_rdma", "mm_sel", 14),
  69         GATE_DISP0(CLK_MM_MDP_BLS_26M, "mm_mdp_bls_26m", "pwm_sel", 15),
  70         GATE_DISP0(CLK_MM_CAM_MDP, "mm_cam_mdp", "mm_sel", 16),
  71         GATE_DISP0(CLK_MM_FAKE_ENG, "mm_fake_eng", "mm_sel", 17),
  72         GATE_DISP0(CLK_MM_MUTEX_32K, "mm_mutex_32k", "rtc_sel", 18),
  73         GATE_DISP0(CLK_MM_DISP_RDMA1, "mm_disp_rdma1", "mm_sel", 19),
  74         GATE_DISP0(CLK_MM_DISP_UFOE, "mm_disp_ufoe", "mm_sel", 20),
  75         GATE_DISP1(CLK_MM_DSI_ENGINE, "mm_dsi_eng", "mm_sel", 0),
  76         GATE_DISP1(CLK_MM_DSI_DIG, "mm_dsi_dig", "dsi0_lntc_dsi", 1),
  77         GATE_DISP1(CLK_MM_DPI_DIGL, "mm_dpi_digl", "dpi0_sel", 2),
  78         GATE_DISP1(CLK_MM_DPI_ENGINE, "mm_dpi_eng", "mm_sel", 3),
  79         GATE_DISP1(CLK_MM_DPI1_DIGL, "mm_dpi1_digl", "dpi1_sel", 4),
  80         GATE_DISP1(CLK_MM_DPI1_ENGINE, "mm_dpi1_eng", "mm_sel", 5),
  81         GATE_DISP1(CLK_MM_TVE_OUTPUT, "mm_tve_output", "tve_sel", 6),
  82         GATE_DISP1(CLK_MM_TVE_INPUT, "mm_tve_input", "dpi0_sel", 7),
  83         GATE_DISP1(CLK_MM_HDMI_PIXEL, "mm_hdmi_pixel", "dpi1_sel", 8),
  84         GATE_DISP1(CLK_MM_HDMI_PLL, "mm_hdmi_pll", "hdmi_sel", 9),
  85         GATE_DISP1(CLK_MM_HDMI_AUDIO, "mm_hdmi_audio", "apll_sel", 10),
  86         GATE_DISP1(CLK_MM_HDMI_SPDIF, "mm_hdmi_spdif", "apll_sel", 11),
  87         GATE_DISP1(CLK_MM_TVE_FMM, "mm_tve_fmm", "mm_sel", 14),
  88 };
  89
  90 static const struct of_device_id of_match_clk_mt2701_mm[] = {
  91         { .compatible = "mediatek,mt2701-mmsys", },
  92         {}
  93 };
  94
  95 static int clk_mt2701_mm_probe(struct platform_device *pdev)
  96 {
  97         struct clk_onecell_data *clk_data;
  98         int r;
  99         struct device_node *node = pdev->dev.of_node;
 100
 101         clk_data = mtk_alloc_clk_data(CLK_MM_NR);
 102
 103         mtk_clk_register_gates(node, mm_clks, ARRAY_SIZE(mm_clks),
 104                                                 clk_data);
 105
 106         r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
 107         if (r)
 108                 dev_err(&pdev->dev,
 109                         "could not register clock provider: %s: %d\n",
 110                         pdev->name, r);
 111
 112         return r;
 113 }
 114
 115 static struct platform_driver clk_mt2701_mm_drv = {
 116         .probe = clk_mt2701_mm_probe,
 117         .driver = {
 118                 .name = "clk-mt2701-mm",
 119                 .of_match_table = of_match_clk_mt2701_mm,
 120         },
 121 };
 122
 123 builtin_platform_driver(clk_mt2701_mm_drv);