arch/mips/include/asm/mach-ar7/ar7.h

   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 /* Board specific GPIO functions */
 207 int ar7_gpio_enable(unsigned gpio);
 208 int ar7_gpio_disable(unsigned gpio);
 209
 210 #endif /* __AR7_H__ */