drivers/clk/sunxi-ng/ccu-sun50i-a100-r.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2020 Yangtao Li <frank@allwinnertech.com>
   4  */
   5
   6 #include <linux/clk-provider.h>
   7 #include <linux/module.h>
   8 #include <linux/platform_device.h>
   9
  10 #include "ccu_common.h"
  11 #include "ccu_reset.h"
  12
  13 #include "ccu_div.h"
  14 #include "ccu_gate.h"
  15 #include "ccu_mp.h"
  16 #include "ccu_nm.h"
  17
  18 #include "ccu-sun50i-a100-r.h"
  19
  20 static const char * const cpus_r_apb2_parents[] = { "dcxo24M", "osc32k",
  21                                                      "iosc", "pll-periph0" };
  22 static const struct ccu_mux_var_prediv cpus_r_apb2_predivs[] = {
  23         { .index = 3, .shift = 0, .width = 5 },
  24 };
  25
  26 static struct ccu_div r_cpus_clk = {
  27         .div            = _SUNXI_CCU_DIV_FLAGS(8, 2, CLK_DIVIDER_POWER_OF_TWO),
  28
  29         .mux            = {
  30                 .shift  = 24,
  31                 .width  = 2,
  32
  33                 .var_predivs    = cpus_r_apb2_predivs,
  34                 .n_var_predivs  = ARRAY_SIZE(cpus_r_apb2_predivs),
  35         },
  36
  37         .common         = {
  38                 .reg            = 0x000,
  39                 .features       = CCU_FEATURE_VARIABLE_PREDIV,
  40                 .hw.init        = CLK_HW_INIT_PARENTS("cpus",
  41                                                       cpus_r_apb2_parents,
  42                                                       &ccu_div_ops,
  43                                                       0),
  44         },
  45 };
  46
  47 static CLK_FIXED_FACTOR_HW(r_ahb_clk, "r-ahb", &r_cpus_clk.common.hw, 1, 1, 0);
  48
  49 static struct ccu_div r_apb1_clk = {
  50         .div            = _SUNXI_CCU_DIV(0, 2),
  51
  52         .common         = {
  53                 .reg            = 0x00c,
  54                 .hw.init        = CLK_HW_INIT("r-apb1",
  55                                               "r-ahb",
  56                                               &ccu_div_ops,
  57                                               0),
  58         },
  59 };
  60
  61 static struct ccu_div r_apb2_clk = {
  62         .div            = _SUNXI_CCU_DIV_FLAGS(8, 2, CLK_DIVIDER_POWER_OF_TWO),
  63
  64         .mux            = {
  65                 .shift  = 24,
  66                 .width  = 2,
  67
  68                 .var_predivs    = cpus_r_apb2_predivs,
  69                 .n_var_predivs  = ARRAY_SIZE(cpus_r_apb2_predivs),
  70         },
  71
  72         .common         = {
  73                 .reg            = 0x010,
  74                 .features       = CCU_FEATURE_VARIABLE_PREDIV,
  75                 .hw.init        = CLK_HW_INIT_PARENTS("r-apb2",
  76                                                       cpus_r_apb2_parents,
  77                                                       &ccu_div_ops,
  78                                                       0),
  79         },
  80 };
  81
  82 static const struct clk_parent_data clk_parent_r_apb1[] = {
  83         { .hw = &r_apb1_clk.common.hw },
  84 };
  85
  86 static const struct clk_parent_data clk_parent_r_apb2[] = {
  87         { .hw = &r_apb2_clk.common.hw },
  88 };
  89
  90 static SUNXI_CCU_GATE_DATA(r_apb1_timer_clk, "r-apb1-timer", clk_parent_r_apb1,
  91                            0x11c, BIT(0), 0);
  92
  93 static SUNXI_CCU_GATE_DATA(r_apb1_twd_clk, "r-apb1-twd", clk_parent_r_apb1,
  94                            0x12c, BIT(0), 0);
  95
  96 static const char * const r_apb1_pwm_clk_parents[] = { "dcxo24M", "osc32k",
  97                                                        "iosc" };
  98 static SUNXI_CCU_MUX(r_apb1_pwm_clk, "r-apb1-pwm", r_apb1_pwm_clk_parents,
  99                      0x130, 24, 2, 0);
 100
 101 static SUNXI_CCU_GATE_DATA(r_apb1_bus_pwm_clk, "r-apb1-bus-pwm",
 102                            clk_parent_r_apb1, 0x13c, BIT(0), 0);
 103
 104 static SUNXI_CCU_GATE_DATA(r_apb1_ppu_clk, "r-apb1-ppu", clk_parent_r_apb1,
 105                            0x17c, BIT(0), 0);
 106
 107 static SUNXI_CCU_GATE_DATA(r_apb2_uart_clk, "r-apb2-uart", clk_parent_r_apb2,
 108                            0x18c, BIT(0), 0);
 109
 110 static SUNXI_CCU_GATE_DATA(r_apb2_i2c0_clk, "r-apb2-i2c0", clk_parent_r_apb2,
 111                            0x19c, BIT(0), 0);
 112
 113 static SUNXI_CCU_GATE_DATA(r_apb2_i2c1_clk, "r-apb2-i2c1", clk_parent_r_apb2,
 114                            0x19c, BIT(1), 0);
 115
 116 static const char * const r_apb1_ir_rx_parents[] = { "osc32k", "dcxo24M" };
 117 static SUNXI_CCU_MP_WITH_MUX_GATE(r_apb1_ir_rx_clk, "r-apb1-ir-rx",
 118                                   r_apb1_ir_rx_parents, 0x1c0,
 119                                   0, 5,         /* M */
 120                                   8, 2,         /* P */
 121                                   24, 1,        /* mux */
 122                                   BIT(31),      /* gate */
 123                                   0);
 124
 125 static SUNXI_CCU_GATE_DATA(r_apb1_bus_ir_rx_clk, "r-apb1-bus-ir-rx",
 126                            clk_parent_r_apb1, 0x1cc, BIT(0), 0);
 127
 128 static SUNXI_CCU_GATE(r_ahb_bus_rtc_clk, "r-ahb-rtc", "r-ahb",
 129                       0x20c, BIT(0), 0);
 130
 131 static struct ccu_common *sun50i_a100_r_ccu_clks[] = {
 132         &r_cpus_clk.common,
 133         &r_apb1_clk.common,
 134         &r_apb2_clk.common,
 135         &r_apb1_timer_clk.common,
 136         &r_apb1_twd_clk.common,
 137         &r_apb1_pwm_clk.common,
 138         &r_apb1_bus_pwm_clk.common,
 139         &r_apb1_ppu_clk.common,
 140         &r_apb2_uart_clk.common,
 141         &r_apb2_i2c0_clk.common,
 142         &r_apb2_i2c1_clk.common,
 143         &r_apb1_ir_rx_clk.common,
 144         &r_apb1_bus_ir_rx_clk.common,
 145         &r_ahb_bus_rtc_clk.common,
 146 };
 147
 148 static struct clk_hw_onecell_data sun50i_a100_r_hw_clks = {
 149         .hws    = {
 150                 [CLK_R_CPUS]            = &r_cpus_clk.common.hw,
 151                 [CLK_R_AHB]             = &r_ahb_clk.hw,
 152                 [CLK_R_APB1]            = &r_apb1_clk.common.hw,
 153                 [CLK_R_APB2]            = &r_apb2_clk.common.hw,
 154                 [CLK_R_APB1_TIMER]      = &r_apb1_timer_clk.common.hw,
 155                 [CLK_R_APB1_TWD]        = &r_apb1_twd_clk.common.hw,
 156                 [CLK_R_APB1_PWM]        = &r_apb1_pwm_clk.common.hw,
 157                 [CLK_R_APB1_BUS_PWM]    = &r_apb1_bus_pwm_clk.common.hw,
 158                 [CLK_R_APB1_PPU]        = &r_apb1_ppu_clk.common.hw,
 159                 [CLK_R_APB2_UART]       = &r_apb2_uart_clk.common.hw,
 160                 [CLK_R_APB2_I2C0]       = &r_apb2_i2c0_clk.common.hw,
 161                 [CLK_R_APB2_I2C1]       = &r_apb2_i2c1_clk.common.hw,
 162                 [CLK_R_APB1_IR]         = &r_apb1_ir_rx_clk.common.hw,
 163                 [CLK_R_APB1_BUS_IR]     = &r_apb1_bus_ir_rx_clk.common.hw,
 164                 [CLK_R_AHB_BUS_RTC]     = &r_ahb_bus_rtc_clk.common.hw,
 165         },
 166         .num    = CLK_NUMBER,
 167 };
 168
 169 static const struct ccu_reset_map sun50i_a100_r_ccu_resets[] = {
 170         [RST_R_APB1_TIMER]      =  { 0x11c, BIT(16) },
 171         [RST_R_APB1_BUS_PWM]    =  { 0x13c, BIT(16) },
 172         [RST_R_APB1_PPU]        =  { 0x17c, BIT(16) },
 173         [RST_R_APB2_UART]       =  { 0x18c, BIT(16) },
 174         [RST_R_APB2_I2C0]       =  { 0x19c, BIT(16) },
 175         [RST_R_APB2_I2C1]       =  { 0x19c, BIT(17) },
 176         [RST_R_APB1_BUS_IR]     =  { 0x1cc, BIT(16) },
 177         [RST_R_AHB_BUS_RTC]     =  { 0x20c, BIT(16) },
 178 };
 179
 180 static const struct sunxi_ccu_desc sun50i_a100_r_ccu_desc = {
 181         .ccu_clks       = sun50i_a100_r_ccu_clks,
 182         .num_ccu_clks   = ARRAY_SIZE(sun50i_a100_r_ccu_clks),
 183
 184         .hw_clks        = &sun50i_a100_r_hw_clks,
 185
 186         .resets         = sun50i_a100_r_ccu_resets,
 187         .num_resets     = ARRAY_SIZE(sun50i_a100_r_ccu_resets),
 188 };
 189
 190 static int sun50i_a100_r_ccu_probe(struct platform_device *pdev)
 191 {
 192         void __iomem *reg;
 193
 194         reg = devm_platform_ioremap_resource(pdev, 0);
 195         if (IS_ERR(reg))
 196                 return PTR_ERR(reg);
 197
 198         return devm_sunxi_ccu_probe(&pdev->dev, reg, &sun50i_a100_r_ccu_desc);
 199 }
 200
 201 static const struct of_device_id sun50i_a100_r_ccu_ids[] = {
 202         { .compatible = "allwinner,sun50i-a100-r-ccu" },
 203         { }
 204 };
 205 MODULE_DEVICE_TABLE(of, sun50i_a100_r_ccu_ids);
 206
 207 static struct platform_driver sun50i_a100_r_ccu_driver = {
 208         .probe  = sun50i_a100_r_ccu_probe,
 209         .driver = {
 210                 .name   = "sun50i-a100-r-ccu",
 211                 .suppress_bind_attrs = true,
 212                 .of_match_table = sun50i_a100_r_ccu_ids,
 213         },
 214 };
 215 module_platform_driver(sun50i_a100_r_ccu_driver);
 216
 217 MODULE_IMPORT_NS("SUNXI_CCU");
 218 MODULE_DESCRIPTION("Support for the Allwinner A100 PRCM CCU");
 219 MODULE_LICENSE("GPL");