1 // SPDX-License-Identifier: GPL-2.0 2 3 #include <linux/clk-provider.h> 4 #include <linux/init.h> 5 #include <linux/of.h> 6 #include <linux/of_device.h> 7 #include <linux/platform_device.h> 8 9 struct clk_bcm63xx_table_entry { 10 const char * const name; 11 u8 bit; 12 unsigned long flags; 13 }; 14 15 struct clk_bcm63xx_hw { 16 void __iomem *regs; 17 spinlock_t lock; 18 19 struct clk_hw_onecell_data data; 20 }; 21 22 static const struct clk_bcm63xx_table_entry bcm3368_clocks[] = { 23 { .name = "mac", .bit = 3, }, 24 { .name = "tc", .bit = 5, }, 25 { .name = "us_top", .bit = 6, }, 26 { .name = "ds_top", .bit = 7, }, 27 { .name = "acm", .bit = 8, }, 28 { .name = "spi", .bit = 9, }, 29 { .name = "usbs", .bit = 10, }, 30 { .name = "bmu", .bit = 11, }, 31 { .name = "pcm", .bit = 12, }, 32 { .name = "ntp", .bit = 13, }, 33 { .name = "acp_b", .bit = 14, }, 34 { .name = "acp_a", .bit = 15, }, 35 { .name = "emusb", .bit = 17, }, 36 { .name = "enet0", .bit = 18, }, 37 { .name = "enet1", .bit = 19, }, 38 { .name = "usbsu", .bit = 20, }, 39 { .name = "ephy", .bit = 21, }, 40 { }, 41 }; 42 43 static const struct clk_bcm63xx_table_entry bcm6328_clocks[] = { 44 { .name = "phy_mips", .bit = 0, }, 45 { .name = "adsl_qproc", .bit = 1, }, 46 { .name = "adsl_afe", .bit = 2, }, 47 { .name = "adsl", .bit = 3, }, 48 { .name = "mips", .bit = 4, .flags = CLK_IS_CRITICAL, }, 49 { .name = "sar", .bit = 5, }, 50 { .name = "pcm", .bit = 6, }, 51 { .name = "usbd", .bit = 7, }, 52 { .name = "usbh", .bit = 8, }, 53 { .name = "hsspi", .bit = 9, }, 54 { .name = "pcie", .bit = 10, }, 55 { .name = "robosw", .bit = 11, }, 56 { }, 57 }; 58 59 static const struct clk_bcm63xx_table_entry bcm6358_clocks[] = { 60 { .name = "enet", .bit = 4, }, 61 { .name = "adslphy", .bit = 5, }, 62 { .name = "pcm", .bit = 8, }, 63 { .name = "spi", .bit = 9, }, 64 { .name = "usbs", .bit = 10, }, 65 { .name = "sar", .bit = 11, }, 66 { .name = "emusb", .bit = 17, }, 67 { .name = "enet0", .bit = 18, }, 68 { .name = "enet1", .bit = 19, }, 69 { .name = "usbsu", .bit = 20, }, 70 { .name = "ephy", .bit = 21, }, 71 { }, 72 }; 73 74 static const struct clk_bcm63xx_table_entry bcm6362_clocks[] = { 75 { .name = "adsl_qproc", .bit = 1, }, 76 { .name = "adsl_afe", .bit = 2, }, 77 { .name = "adsl", .bit = 3, }, 78 { .name = "mips", .bit = 4, .flags = CLK_IS_CRITICAL, }, 79 { .name = "wlan_ocp", .bit = 5, }, 80 { .name = "swpkt_usb", .bit = 7, }, 81 { .name = "swpkt_sar", .bit = 8, }, 82 { .name = "sar", .bit = 9, }, 83 { .name = "robosw", .bit = 10, }, 84 { .name = "pcm", .bit = 11, }, 85 { .name = "usbd", .bit = 12, }, 86 { .name = "usbh", .bit = 13, }, 87 { .name = "ipsec", .bit = 14, }, 88 { .name = "spi", .bit = 15, }, 89 { .name = "hsspi", .bit = 16, }, 90 { .name = "pcie", .bit = 17, }, 91 { .name = "fap", .bit = 18, }, 92 { .name = "phymips", .bit = 19, }, 93 { .name = "nand", .bit = 20, }, 94 { }, 95 }; 96 97 static const struct clk_bcm63xx_table_entry bcm6368_clocks[] = { 98 { .name = "vdsl_qproc", .bit = 2, }, 99 { .name = "vdsl_afe", .bit = 3, }, 100 { .name = "vdsl_bonding", .bit = 4, }, 101 { .name = "vdsl", .bit = 5, }, 102 { .name = "phymips", .bit = 6, }, 103 { .name = "swpkt_usb", .bit = 7, }, 104 { .name = "swpkt_sar", .bit = 8, }, 105 { .name = "spi", .bit = 9, }, 106 { .name = "usbd", .bit = 10, }, 107 { .name = "sar", .bit = 11, }, 108 { .name = "robosw", .bit = 12, }, 109 { .name = "utopia", .bit = 13, }, 110 { .name = "pcm", .bit = 14, }, 111 { .name = "usbh", .bit = 15, }, 112 { .name = "disable_gless", .bit = 16, }, 113 { .name = "nand", .bit = 17, }, 114 { .name = "ipsec", .bit = 18, }, 115 { }, 116 }; 117 118 static const struct clk_bcm63xx_table_entry bcm63268_clocks[] = { 119 { .name = "disable_gless", .bit = 0, }, 120 { .name = "vdsl_qproc", .bit = 1, }, 121 { .name = "vdsl_afe", .bit = 2, }, 122 { .name = "vdsl", .bit = 3, }, 123 { .name = "mips", .bit = 4, .flags = CLK_IS_CRITICAL, }, 124 { .name = "wlan_ocp", .bit = 5, }, 125 { .name = "dect", .bit = 6, }, 126 { .name = "fap0", .bit = 7, }, 127 { .name = "fap1", .bit = 8, }, 128 { .name = "sar", .bit = 9, }, 129 { .name = "robosw", .bit = 10, }, 130 { .name = "pcm", .bit = 11, }, 131 { .name = "usbd", .bit = 12, }, 132 { .name = "usbh", .bit = 13, }, 133 { .name = "ipsec", .bit = 14, }, 134 { .name = "spi", .bit = 15, }, 135 { .name = "hsspi", .bit = 16, }, 136 { .name = "pcie", .bit = 17, }, 137 { .name = "phymips", .bit = 18, }, 138 { .name = "gmac", .bit = 19, }, 139 { .name = "nand", .bit = 20, }, 140 { .name = "tbus", .bit = 27, }, 141 { .name = "robosw250", .bit = 31, }, 142 { }, 143 }; 144 145 static int clk_bcm63xx_probe(struct platform_device *pdev) 146 { 147 const struct clk_bcm63xx_table_entry *entry, *table; 148 struct clk_bcm63xx_hw *hw; 149 u8 maxbit = 0; 150 int i, ret; 151 152 table = of_device_get_match_data(&pdev->dev); 153 if (!table) 154 return -EINVAL; 155 156 for (entry = table; entry->name; entry++) 157 maxbit = max_t(u8, maxbit, entry->bit); 158 159 hw = devm_kzalloc(&pdev->dev, struct_size(hw, data.hws, maxbit), 160 GFP_KERNEL); 161 if (!hw) 162 return -ENOMEM; 163 164 platform_set_drvdata(pdev, hw); 165 166 spin_lock_init(&hw->lock); 167 168 hw->data.num = maxbit; 169 for (i = 0; i < maxbit; i++) 170 hw->data.hws[i] = ERR_PTR(-ENODEV); 171 172 hw->regs = devm_platform_ioremap_resource(pdev, 0); 173 if (IS_ERR(hw->regs)) 174 return PTR_ERR(hw->regs); 175 176 for (entry = table; entry->name; entry++) { 177 struct clk_hw *clk; 178 179 clk = clk_hw_register_gate(&pdev->dev, entry->name, NULL, 180 entry->flags, hw->regs, entry->bit, 181 CLK_GATE_BIG_ENDIAN, &hw->lock); 182 if (IS_ERR(clk)) { 183 ret = PTR_ERR(clk); 184 goto out_err; 185 } 186 187 hw->data.hws[entry->bit] = clk; 188 } 189 190 ret = of_clk_add_hw_provider(pdev->dev.of_node, of_clk_hw_onecell_get, 191 &hw->data); 192 if (!ret) 193 return 0; 194 out_err: 195 for (i = 0; i < hw->data.num; i++) { 196 if (!IS_ERR(hw->data.hws[i])) 197 clk_hw_unregister_gate(hw->data.hws[i]); 198 } 199 200 return ret; 201 } 202 203 static int clk_bcm63xx_remove(struct platform_device *pdev) 204 { 205 struct clk_bcm63xx_hw *hw = platform_get_drvdata(pdev); 206 int i; 207 208 of_clk_del_provider(pdev->dev.of_node); 209 210 for (i = 0; i < hw->data.num; i++) { 211 if (!IS_ERR(hw->data.hws[i])) 212 clk_hw_unregister_gate(hw->data.hws[i]); 213 } 214 215 return 0; 216 } 217 218 static const struct of_device_id clk_bcm63xx_dt_ids[] = { 219 { .compatible = "brcm,bcm3368-clocks", .data = &bcm3368_clocks, }, 220 { .compatible = "brcm,bcm6328-clocks", .data = &bcm6328_clocks, }, 221 { .compatible = "brcm,bcm6358-clocks", .data = &bcm6358_clocks, }, 222 { .compatible = "brcm,bcm6362-clocks", .data = &bcm6362_clocks, }, 223 { .compatible = "brcm,bcm6368-clocks", .data = &bcm6368_clocks, }, 224 { .compatible = "brcm,bcm63268-clocks", .data = &bcm63268_clocks, }, 225 { } 226 }; 227 228 static struct platform_driver clk_bcm63xx = { 229 .probe = clk_bcm63xx_probe, 230 .remove = clk_bcm63xx_remove, 231 .driver = { 232 .name = "bcm63xx-clock", 233 .of_match_table = clk_bcm63xx_dt_ids, 234 }, 235 }; 236 builtin_platform_driver(clk_bcm63xx); 237