linux/drivers/clk/sunxi-ng/ccu-sun8i-r.c
<<
>>
Prefs
   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * Copyright (c) 2016 Icenowy Zheng <icenowy@aosc.xyz>
   4 */
   5
   6#include <linux/clk-provider.h>
   7#include <linux/of_address.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-sun8i-r.h"
  19
  20static const struct clk_parent_data ar100_parents[] = {
  21        { .fw_name = "losc" },
  22        { .fw_name = "hosc" },
  23        { .fw_name = "pll-periph" },
  24        { .fw_name = "iosc" },
  25};
  26
  27static const struct ccu_mux_var_prediv ar100_predivs[] = {
  28        { .index = 2, .shift = 8, .width = 5 },
  29};
  30
  31static struct ccu_div ar100_clk = {
  32        .div            = _SUNXI_CCU_DIV_FLAGS(4, 2, CLK_DIVIDER_POWER_OF_TWO),
  33
  34        .mux            = {
  35                .shift  = 16,
  36                .width  = 2,
  37
  38                .var_predivs    = ar100_predivs,
  39                .n_var_predivs  = ARRAY_SIZE(ar100_predivs),
  40        },
  41
  42        .common         = {
  43                .reg            = 0x00,
  44                .features       = CCU_FEATURE_VARIABLE_PREDIV,
  45                .hw.init        = CLK_HW_INIT_PARENTS_DATA("ar100",
  46                                                           ar100_parents,
  47                                                           &ccu_div_ops,
  48                                                           0),
  49        },
  50};
  51
  52static CLK_FIXED_FACTOR_HW(ahb0_clk, "ahb0", &ar100_clk.common.hw, 1, 1, 0);
  53
  54static SUNXI_CCU_M(apb0_clk, "apb0", "ahb0", 0x0c, 0, 2, 0);
  55
  56/*
  57 * Define the parent as an array that can be reused to save space
  58 * instead of having compound literals for each gate. Also have it
  59 * non-const so we can change it on the A83T.
  60 */
  61static const struct clk_hw *apb0_gate_parent[] = { &apb0_clk.common.hw };
  62static SUNXI_CCU_GATE_HWS(apb0_pio_clk,         "apb0-pio",
  63                          apb0_gate_parent, 0x28, BIT(0), 0);
  64static SUNXI_CCU_GATE_HWS(apb0_ir_clk,          "apb0-ir",
  65                          apb0_gate_parent, 0x28, BIT(1), 0);
  66static SUNXI_CCU_GATE_HWS(apb0_timer_clk,       "apb0-timer",
  67                          apb0_gate_parent, 0x28, BIT(2), 0);
  68static SUNXI_CCU_GATE_HWS(apb0_rsb_clk,         "apb0-rsb",
  69                          apb0_gate_parent, 0x28, BIT(3), 0);
  70static SUNXI_CCU_GATE_HWS(apb0_uart_clk,        "apb0-uart",
  71                          apb0_gate_parent, 0x28, BIT(4), 0);
  72static SUNXI_CCU_GATE_HWS(apb0_i2c_clk,         "apb0-i2c",
  73                          apb0_gate_parent, 0x28, BIT(6), 0);
  74static SUNXI_CCU_GATE_HWS(apb0_twd_clk,         "apb0-twd",
  75                          apb0_gate_parent, 0x28, BIT(7), 0);
  76
  77static const char * const r_mod0_default_parents[] = { "osc32k", "osc24M" };
  78static SUNXI_CCU_MP_WITH_MUX_GATE(ir_clk, "ir",
  79                                  r_mod0_default_parents, 0x54,
  80                                  0, 4,         /* M */
  81                                  16, 2,        /* P */
  82                                  24, 2,        /* mux */
  83                                  BIT(31),      /* gate */
  84                                  0);
  85
  86static const struct clk_parent_data a83t_r_mod0_parents[] = {
  87        { .fw_name = "iosc" },
  88        { .fw_name = "hosc" },
  89};
  90static const struct ccu_mux_fixed_prediv a83t_ir_predivs[] = {
  91        { .index = 0, .div = 16 },
  92};
  93static struct ccu_mp a83t_ir_clk = {
  94        .enable = BIT(31),
  95
  96        .m      = _SUNXI_CCU_DIV(0, 4),
  97        .p      = _SUNXI_CCU_DIV(16, 2),
  98
  99        .mux    = {
 100                .shift  = 24,
 101                .width  = 2,
 102                .fixed_predivs  = a83t_ir_predivs,
 103                .n_predivs      = ARRAY_SIZE(a83t_ir_predivs),
 104        },
 105
 106        .common         = {
 107                .reg            = 0x54,
 108                .features       = CCU_FEATURE_VARIABLE_PREDIV,
 109                .hw.init        = CLK_HW_INIT_PARENTS_DATA("ir",
 110                                                           a83t_r_mod0_parents,
 111                                                           &ccu_mp_ops,
 112                                                           0),
 113        },
 114};
 115
 116static struct ccu_common *sun8i_a83t_r_ccu_clks[] = {
 117        &ar100_clk.common,
 118        &apb0_clk.common,
 119        &apb0_pio_clk.common,
 120        &apb0_ir_clk.common,
 121        &apb0_timer_clk.common,
 122        &apb0_rsb_clk.common,
 123        &apb0_uart_clk.common,
 124        &apb0_i2c_clk.common,
 125        &apb0_twd_clk.common,
 126        &a83t_ir_clk.common,
 127};
 128
 129static struct ccu_common *sun8i_h3_r_ccu_clks[] = {
 130        &ar100_clk.common,
 131        &apb0_clk.common,
 132        &apb0_pio_clk.common,
 133        &apb0_ir_clk.common,
 134        &apb0_timer_clk.common,
 135        &apb0_uart_clk.common,
 136        &apb0_i2c_clk.common,
 137        &apb0_twd_clk.common,
 138        &ir_clk.common,
 139};
 140
 141static struct ccu_common *sun50i_a64_r_ccu_clks[] = {
 142        &ar100_clk.common,
 143        &apb0_clk.common,
 144        &apb0_pio_clk.common,
 145        &apb0_ir_clk.common,
 146        &apb0_timer_clk.common,
 147        &apb0_rsb_clk.common,
 148        &apb0_uart_clk.common,
 149        &apb0_i2c_clk.common,
 150        &apb0_twd_clk.common,
 151        &ir_clk.common,
 152};
 153
 154static struct clk_hw_onecell_data sun8i_a83t_r_hw_clks = {
 155        .hws    = {
 156                [CLK_AR100]             = &ar100_clk.common.hw,
 157                [CLK_AHB0]              = &ahb0_clk.hw,
 158                [CLK_APB0]              = &apb0_clk.common.hw,
 159                [CLK_APB0_PIO]          = &apb0_pio_clk.common.hw,
 160                [CLK_APB0_IR]           = &apb0_ir_clk.common.hw,
 161                [CLK_APB0_TIMER]        = &apb0_timer_clk.common.hw,
 162                [CLK_APB0_RSB]          = &apb0_rsb_clk.common.hw,
 163                [CLK_APB0_UART]         = &apb0_uart_clk.common.hw,
 164                [CLK_APB0_I2C]          = &apb0_i2c_clk.common.hw,
 165                [CLK_APB0_TWD]          = &apb0_twd_clk.common.hw,
 166                [CLK_IR]                = &a83t_ir_clk.common.hw,
 167        },
 168        .num    = CLK_NUMBER,
 169};
 170
 171static struct clk_hw_onecell_data sun8i_h3_r_hw_clks = {
 172        .hws    = {
 173                [CLK_AR100]             = &ar100_clk.common.hw,
 174                [CLK_AHB0]              = &ahb0_clk.hw,
 175                [CLK_APB0]              = &apb0_clk.common.hw,
 176                [CLK_APB0_PIO]          = &apb0_pio_clk.common.hw,
 177                [CLK_APB0_IR]           = &apb0_ir_clk.common.hw,
 178                [CLK_APB0_TIMER]        = &apb0_timer_clk.common.hw,
 179                [CLK_APB0_UART]         = &apb0_uart_clk.common.hw,
 180                [CLK_APB0_I2C]          = &apb0_i2c_clk.common.hw,
 181                [CLK_APB0_TWD]          = &apb0_twd_clk.common.hw,
 182                [CLK_IR]                = &ir_clk.common.hw,
 183        },
 184        .num    = CLK_NUMBER,
 185};
 186
 187static struct clk_hw_onecell_data sun50i_a64_r_hw_clks = {
 188        .hws    = {
 189                [CLK_AR100]             = &ar100_clk.common.hw,
 190                [CLK_AHB0]              = &ahb0_clk.hw,
 191                [CLK_APB0]              = &apb0_clk.common.hw,
 192                [CLK_APB0_PIO]          = &apb0_pio_clk.common.hw,
 193                [CLK_APB0_IR]           = &apb0_ir_clk.common.hw,
 194                [CLK_APB0_TIMER]        = &apb0_timer_clk.common.hw,
 195                [CLK_APB0_RSB]          = &apb0_rsb_clk.common.hw,
 196                [CLK_APB0_UART]         = &apb0_uart_clk.common.hw,
 197                [CLK_APB0_I2C]          = &apb0_i2c_clk.common.hw,
 198                [CLK_APB0_TWD]          = &apb0_twd_clk.common.hw,
 199                [CLK_IR]                = &ir_clk.common.hw,
 200        },
 201        .num    = CLK_NUMBER,
 202};
 203
 204static struct ccu_reset_map sun8i_a83t_r_ccu_resets[] = {
 205        [RST_APB0_IR]           =  { 0xb0, BIT(1) },
 206        [RST_APB0_TIMER]        =  { 0xb0, BIT(2) },
 207        [RST_APB0_RSB]          =  { 0xb0, BIT(3) },
 208        [RST_APB0_UART]         =  { 0xb0, BIT(4) },
 209        [RST_APB0_I2C]          =  { 0xb0, BIT(6) },
 210};
 211
 212static struct ccu_reset_map sun8i_h3_r_ccu_resets[] = {
 213        [RST_APB0_IR]           =  { 0xb0, BIT(1) },
 214        [RST_APB0_TIMER]        =  { 0xb0, BIT(2) },
 215        [RST_APB0_UART]         =  { 0xb0, BIT(4) },
 216        [RST_APB0_I2C]          =  { 0xb0, BIT(6) },
 217};
 218
 219static struct ccu_reset_map sun50i_a64_r_ccu_resets[] = {
 220        [RST_APB0_IR]           =  { 0xb0, BIT(1) },
 221        [RST_APB0_TIMER]        =  { 0xb0, BIT(2) },
 222        [RST_APB0_RSB]          =  { 0xb0, BIT(3) },
 223        [RST_APB0_UART]         =  { 0xb0, BIT(4) },
 224        [RST_APB0_I2C]          =  { 0xb0, BIT(6) },
 225};
 226
 227static const struct sunxi_ccu_desc sun8i_a83t_r_ccu_desc = {
 228        .ccu_clks       = sun8i_a83t_r_ccu_clks,
 229        .num_ccu_clks   = ARRAY_SIZE(sun8i_a83t_r_ccu_clks),
 230
 231        .hw_clks        = &sun8i_a83t_r_hw_clks,
 232
 233        .resets         = sun8i_a83t_r_ccu_resets,
 234        .num_resets     = ARRAY_SIZE(sun8i_a83t_r_ccu_resets),
 235};
 236
 237static const struct sunxi_ccu_desc sun8i_h3_r_ccu_desc = {
 238        .ccu_clks       = sun8i_h3_r_ccu_clks,
 239        .num_ccu_clks   = ARRAY_SIZE(sun8i_h3_r_ccu_clks),
 240
 241        .hw_clks        = &sun8i_h3_r_hw_clks,
 242
 243        .resets         = sun8i_h3_r_ccu_resets,
 244        .num_resets     = ARRAY_SIZE(sun8i_h3_r_ccu_resets),
 245};
 246
 247static const struct sunxi_ccu_desc sun50i_a64_r_ccu_desc = {
 248        .ccu_clks       = sun50i_a64_r_ccu_clks,
 249        .num_ccu_clks   = ARRAY_SIZE(sun50i_a64_r_ccu_clks),
 250
 251        .hw_clks        = &sun50i_a64_r_hw_clks,
 252
 253        .resets         = sun50i_a64_r_ccu_resets,
 254        .num_resets     = ARRAY_SIZE(sun50i_a64_r_ccu_resets),
 255};
 256
 257static void __init sunxi_r_ccu_init(struct device_node *node,
 258                                    const struct sunxi_ccu_desc *desc)
 259{
 260        void __iomem *reg;
 261
 262        reg = of_io_request_and_map(node, 0, of_node_full_name(node));
 263        if (IS_ERR(reg)) {
 264                pr_err("%pOF: Could not map the clock registers\n", node);
 265                return;
 266        }
 267
 268        sunxi_ccu_probe(node, reg, desc);
 269}
 270
 271static void __init sun8i_a83t_r_ccu_setup(struct device_node *node)
 272{
 273        sunxi_r_ccu_init(node, &sun8i_a83t_r_ccu_desc);
 274}
 275CLK_OF_DECLARE(sun8i_a83t_r_ccu, "allwinner,sun8i-a83t-r-ccu",
 276               sun8i_a83t_r_ccu_setup);
 277
 278static void __init sun8i_h3_r_ccu_setup(struct device_node *node)
 279{
 280        sunxi_r_ccu_init(node, &sun8i_h3_r_ccu_desc);
 281}
 282CLK_OF_DECLARE(sun8i_h3_r_ccu, "allwinner,sun8i-h3-r-ccu",
 283               sun8i_h3_r_ccu_setup);
 284
 285static void __init sun50i_a64_r_ccu_setup(struct device_node *node)
 286{
 287        sunxi_r_ccu_init(node, &sun50i_a64_r_ccu_desc);
 288}
 289CLK_OF_DECLARE(sun50i_a64_r_ccu, "allwinner,sun50i-a64-r-ccu",
 290               sun50i_a64_r_ccu_setup);
 291