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
ar7_is_titan(void)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
ar7_chip_id(void)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
titan_chip_id(void)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
ar7_chip_rev(void)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
ar7_has_high_cpmac(void)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
ar7_device_enable(u32 bit)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
ar7_device_disable(u32 bit)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
ar7_device_reset(u32 bit)183 static inline void ar7_device_reset(u32 bit)
184 {
185 ar7_device_disable(bit);
186 ar7_device_enable(bit);
187 }
188
ar7_device_on(u32 bit)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
ar7_device_off(u32 bit)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__ */
211
