1 /* 2 * Copyright (C) 2006,2007 Felix Fietkau <nbd@openwrt.org> 3 * Copyright (C) 2006,2007 Eugene Konev <ejka@openwrt.org> 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 as published by 7 * the Free Software Foundation; either version 2 of the License, or 8 * (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 18 */ 19 20 #ifndef __AR7_H__ 21 #define __AR7_H__ 22 23 #include <linux/delay.h> 24 #include <linux/io.h> 25 #include <linux/errno.h> 26 27 #include <asm/addrspace.h> 28 29 #define AR7_SDRAM_BASE 0x14000000 30 31 #define AR7_REGS_BASE 0x08610000 32 33 #define AR7_REGS_MAC0 (AR7_REGS_BASE + 0x0000) 34 #define AR7_REGS_GPIO (AR7_REGS_BASE + 0x0900) 35 /* 0x08610A00 - 0x08610BFF (512 bytes, 128 bytes / clock) */ 36 #define AR7_REGS_POWER (AR7_REGS_BASE + 0x0a00) 37 #define AR7_REGS_CLOCKS (AR7_REGS_POWER + 0x80) 38 #define UR8_REGS_CLOCKS (AR7_REGS_POWER + 0x20) 39 #define AR7_REGS_UART0 (AR7_REGS_BASE + 0x0e00) 40 #define AR7_REGS_USB (AR7_REGS_BASE + 0x1200) 41 #define AR7_REGS_RESET (AR7_REGS_BASE + 0x1600) 42 #define AR7_REGS_PINSEL (AR7_REGS_BASE + 0x160C) 43 #define AR7_REGS_VLYNQ0 (AR7_REGS_BASE + 0x1800) 44 #define AR7_REGS_DCL (AR7_REGS_BASE + 0x1a00) 45 #define AR7_REGS_VLYNQ1 (AR7_REGS_BASE + 0x1c00) 46 #define AR7_REGS_MDIO (AR7_REGS_BASE + 0x1e00) 47 #define AR7_REGS_IRQ (AR7_REGS_BASE + 0x2400) 48 #define AR7_REGS_MAC1 (AR7_REGS_BASE + 0x2800) 49 50 #define AR7_REGS_WDT (AR7_REGS_BASE + 0x1f00) 51 #define UR8_REGS_WDT (AR7_REGS_BASE + 0x0b00) 52 #define UR8_REGS_UART1 (AR7_REGS_BASE + 0x0f00) 53 54 /* Titan registers */ 55 #define TITAN_REGS_ESWITCH_BASE (0x08640000) 56 #define TITAN_REGS_MAC0 (TITAN_REGS_ESWITCH_BASE) 57 #define TITAN_REGS_MAC1 (TITAN_REGS_ESWITCH_BASE + 0x0800) 58 #define TITAN_REGS_MDIO (TITAN_REGS_ESWITCH_BASE + 0x02000) 59 #define TITAN_REGS_VLYNQ0 (AR7_REGS_BASE + 0x1c00) 60 #define TITAN_REGS_VLYNQ1 (AR7_REGS_BASE + 0x1300) 61 62 #define AR7_RESET_PERIPHERAL 0x0 63 #define AR7_RESET_SOFTWARE 0x4 64 #define AR7_RESET_STATUS 0x8 65 66 #define AR7_RESET_BIT_CPMAC_LO 17 67 #define AR7_RESET_BIT_CPMAC_HI 21 68 #define AR7_RESET_BIT_MDIO 22 69 #define AR7_RESET_BIT_EPHY 26 70 71 #define TITAN_RESET_BIT_EPHY1 28 72 73 /* GPIO control registers */ 74 #define AR7_GPIO_INPUT 0x0 75 #define AR7_GPIO_OUTPUT 0x4 76 #define AR7_GPIO_DIR 0x8 77 #define AR7_GPIO_ENABLE 0xc 78 #define TITAN_GPIO_INPUT_0 0x0 79 #define TITAN_GPIO_INPUT_1 0x4 80 #define TITAN_GPIO_OUTPUT_0 0x8 81 #define TITAN_GPIO_OUTPUT_1 0xc 82 #define TITAN_GPIO_DIR_0 0x10 83 #define TITAN_GPIO_DIR_1 0x14 84 #define TITAN_GPIO_ENBL_0 0x18 85 #define TITAN_GPIO_ENBL_1 0x1c 86 87 #define AR7_CHIP_7100 0x18 88 #define AR7_CHIP_7200 0x2b 89 #define AR7_CHIP_7300 0x05 90 #define AR7_CHIP_TITAN 0x07 91 #define TITAN_CHIP_1050 0x0f 92 #define TITAN_CHIP_1055 0x0e 93 #define TITAN_CHIP_1056 0x0d 94 #define TITAN_CHIP_1060 0x07 95 96 /* Interrupts */ 97 #define AR7_IRQ_UART0 15 98 #define AR7_IRQ_UART1 16 99 100 /* Clocks */ 101 #define AR7_AFE_CLOCK 35328000 102 #define AR7_REF_CLOCK 25000000 103 #define AR7_XTAL_CLOCK 24000000 104 105 /* DCL */ 106 #define AR7_WDT_HW_ENA 0x10 107 108 struct plat_cpmac_data { 109 int reset_bit; 110 int power_bit; 111 u32 phy_mask; 112 char dev_addr[6]; 113 }; 114 115 struct plat_dsl_data { 116 int reset_bit_dsl; 117 int reset_bit_sar; 118 }; 119 120 extern int ar7_cpu_clock, ar7_bus_clock, ar7_dsp_clock; 121 122 static inline int ar7_is_titan(void) 123 { 124 return (readl((void *)KSEG1ADDR(AR7_REGS_GPIO + 0x24)) & 0xffff) == 125 AR7_CHIP_TITAN; 126 } 127 128 static inline u16 ar7_chip_id(void) 129 { 130 return ar7_is_titan() ? AR7_CHIP_TITAN : (readl((void *) 131 KSEG1ADDR(AR7_REGS_GPIO + 0x14)) & 0xffff); 132 } 133 134 static inline u16 titan_chip_id(void) 135 { 136 unsigned int val = readl((void *)KSEG1ADDR(AR7_REGS_GPIO + 137 TITAN_GPIO_INPUT_1)); 138 return ((val >> 12) & 0x0f); 139 } 140 141 static inline u8 ar7_chip_rev(void) 142 { 143 return (readl((void *)KSEG1ADDR(AR7_REGS_GPIO + (ar7_is_titan() ? 0x24 : 144 0x14))) >> 16) & 0xff; 145 } 146 147 struct clk { 148 unsigned int rate; 149 }; 150 151 static inline int ar7_has_high_cpmac(void) 152 { 153 u16 chip_id = ar7_chip_id(); 154 switch (chip_id) { 155 case AR7_CHIP_7100: 156 case AR7_CHIP_7200: 157 return 0; 158 case AR7_CHIP_7300: 159 return 1; 160 default: 161 return -ENXIO; 162 } 163 } 164 #define ar7_has_high_vlynq ar7_has_high_cpmac 165 #define ar7_has_second_uart ar7_has_high_cpmac 166 167 static inline void ar7_device_enable(u32 bit) 168 { 169 void *reset_reg = 170 (void *)KSEG1ADDR(AR7_REGS_RESET + AR7_RESET_PERIPHERAL); 171 writel(readl(reset_reg) | (1 << bit), reset_reg); 172 msleep(20); 173 } 174 175 static inline void ar7_device_disable(u32 bit) 176 { 177 void *reset_reg = 178 (void *)KSEG1ADDR(AR7_REGS_RESET + AR7_RESET_PERIPHERAL); 179 writel(readl(reset_reg) & ~(1 << bit), reset_reg); 180 msleep(20); 181 } 182 183 static inline void ar7_device_reset(u32 bit) 184 { 185 ar7_device_disable(bit); 186 ar7_device_enable(bit); 187 } 188 189 static inline void ar7_device_on(u32 bit) 190 { 191 void *power_reg = (void *)KSEG1ADDR(AR7_REGS_POWER); 192 writel(readl(power_reg) | (1 << bit), power_reg); 193 msleep(20); 194 } 195 196 static inline void ar7_device_off(u32 bit) 197 { 198 void *power_reg = (void *)KSEG1ADDR(AR7_REGS_POWER); 199 writel(readl(power_reg) & ~(1 << bit), power_reg); 200 msleep(20); 201 } 202 203 int __init ar7_gpio_init(void); 204 void __init ar7_init_clocks(void); 205 206 #endif /* __AR7_H__ */ 207