drivers/clk/mediatek/clk-mt2712-bdp.c

   1 /*
   2  * Copyright (c) 2017 MediaTek Inc.
   3  * Author: Weiyi Lu <weiyi.lu@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/mt2712-clk.h>
  22
  23 static const struct mtk_gate_regs bdp_cg_regs = {
  24         .set_ofs = 0x100,
  25         .clr_ofs = 0x100,
  26         .sta_ofs = 0x100,
  27 };
  28
  29 #define GATE_BDP(_id, _name, _parent, _shift) { \
  30                 .id = _id,                              \
  31                 .name = _name,                          \
  32                 .parent_name = _parent,                 \
  33                 .regs = &bdp_cg_regs,                   \
  34                 .shift = _shift,                        \
  35                 .ops = &mtk_clk_gate_ops_no_setclr,     \
  36         }
  37
  38 static const struct mtk_gate bdp_clks[] = {
  39         GATE_BDP(CLK_BDP_BRIDGE_B, "bdp_bridge_b", "mm_sel", 0),
  40         GATE_BDP(CLK_BDP_BRIDGE_DRAM, "bdp_bridge_d", "mm_sel", 1),
  41         GATE_BDP(CLK_BDP_LARB_DRAM, "bdp_larb_d", "mm_sel", 2),
  42         GATE_BDP(CLK_BDP_WR_CHANNEL_VDI_PXL, "bdp_vdi_pxl", "tvd_sel", 3),
  43         GATE_BDP(CLK_BDP_WR_CHANNEL_VDI_DRAM, "bdp_vdi_d", "mm_sel", 4),
  44         GATE_BDP(CLK_BDP_WR_CHANNEL_VDI_B, "bdp_vdi_b", "mm_sel", 5),
  45         GATE_BDP(CLK_BDP_MT_B, "bdp_fmt_b", "mm_sel", 9),
  46         GATE_BDP(CLK_BDP_DISPFMT_27M, "bdp_27m", "di_sel", 10),
  47         GATE_BDP(CLK_BDP_DISPFMT_27M_VDOUT, "bdp_27m_vdout", "di_sel", 11),
  48         GATE_BDP(CLK_BDP_DISPFMT_27_74_74, "bdp_27_74_74", "di_sel", 12),
  49         GATE_BDP(CLK_BDP_DISPFMT_2FS, "bdp_2fs", "di_sel", 13),
  50         GATE_BDP(CLK_BDP_DISPFMT_2FS_2FS74_148, "bdp_2fs74_148", "di_sel", 14),
  51         GATE_BDP(CLK_BDP_DISPFMT_B, "bdp_b", "mm_sel", 15),
  52         GATE_BDP(CLK_BDP_VDO_DRAM, "bdp_vdo_d", "mm_sel", 16),
  53         GATE_BDP(CLK_BDP_VDO_2FS, "bdp_vdo_2fs", "di_sel", 17),
  54         GATE_BDP(CLK_BDP_VDO_B, "bdp_vdo_b", "mm_sel", 18),
  55         GATE_BDP(CLK_BDP_WR_CHANNEL_DI_PXL, "bdp_di_pxl", "di_sel", 19),
  56         GATE_BDP(CLK_BDP_WR_CHANNEL_DI_DRAM, "bdp_di_d", "mm_sel", 20),
  57         GATE_BDP(CLK_BDP_WR_CHANNEL_DI_B, "bdp_di_b", "mm_sel", 21),
  58         GATE_BDP(CLK_BDP_NR_AGENT, "bdp_nr_agent", "nr_sel", 22),
  59         GATE_BDP(CLK_BDP_NR_DRAM, "bdp_nr_d", "mm_sel", 23),
  60         GATE_BDP(CLK_BDP_NR_B, "bdp_nr_b", "mm_sel", 24),
  61         GATE_BDP(CLK_BDP_BRIDGE_RT_B, "bdp_bridge_rt_b", "mm_sel", 25),
  62         GATE_BDP(CLK_BDP_BRIDGE_RT_DRAM, "bdp_bridge_rt_d", "mm_sel", 26),
  63         GATE_BDP(CLK_BDP_LARB_RT_DRAM, "bdp_larb_rt_d", "mm_sel", 27),
  64         GATE_BDP(CLK_BDP_TVD_TDC, "bdp_tvd_tdc", "mm_sel", 28),
  65         GATE_BDP(CLK_BDP_TVD_54, "bdp_tvd_clk_54", "tvd_sel", 29),
  66         GATE_BDP(CLK_BDP_TVD_CBUS, "bdp_tvd_cbus", "mm_sel", 30),
  67 };
  68
  69 static int clk_mt2712_bdp_probe(struct platform_device *pdev)
  70 {
  71         struct clk_onecell_data *clk_data;
  72         int r;
  73         struct device_node *node = pdev->dev.of_node;
  74
  75         clk_data = mtk_alloc_clk_data(CLK_BDP_NR_CLK);
  76
  77         mtk_clk_register_gates(node, bdp_clks, ARRAY_SIZE(bdp_clks),
  78                         clk_data);
  79
  80         r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
  81
  82         if (r != 0)
  83                 pr_err("%s(): could not register clock provider: %d\n",
  84                         __func__, r);
  85
  86         return r;
  87 }
  88
  89 static const struct of_device_id of_match_clk_mt2712_bdp[] = {
  90         { .compatible = "mediatek,mt2712-bdpsys", },
  91         {}
  92 };
  93
  94 static struct platform_driver clk_mt2712_bdp_drv = {
  95         .probe = clk_mt2712_bdp_probe,
  96         .driver = {
  97                 .name = "clk-mt2712-bdp",
  98                 .of_match_table = of_match_clk_mt2712_bdp,
  99         },
 100 };
 101
 102 builtin_platform_driver(clk_mt2712_bdp_drv);