[AVR32] leds-gpio for stk1000
[linux-2.6.git] / arch / avr32 / boards / atstk1000 / atstk1002.c
1 /*
2  * ATSTK1002 daughterboard-specific init code
3  *
4  * Copyright (C) 2005-2006 Atmel Corporation
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 as
8  * published by the Free Software Foundation.
9  */
10 #include <linux/clk.h>
11 #include <linux/etherdevice.h>
12 #include <linux/init.h>
13 #include <linux/kernel.h>
14 #include <linux/leds.h>
15 #include <linux/platform_device.h>
16 #include <linux/string.h>
17 #include <linux/types.h>
18 #include <linux/spi/spi.h>
19
20 #include <video/atmel_lcdc.h>
21
22 #include <asm/io.h>
23 #include <asm/setup.h>
24 #include <asm/arch/at32ap7000.h>
25 #include <asm/arch/board.h>
26 #include <asm/arch/init.h>
27 #include <asm/arch/portmux.h>
28
29 #include "atstk1000.h"
30
31
32 struct eth_addr {
33         u8 addr[6];
34 };
35
36 static struct eth_addr __initdata hw_addr[2];
37 static struct eth_platform_data __initdata eth_data[2] = {
38         {
39                 /*
40                  * The MDIO pullups on STK1000 are a bit too weak for
41                  * the autodetection to work properly, so we have to
42                  * mask out everything but the correct address.
43                  */
44                 .phy_mask       = ~(1U << 16),
45         },
46         {
47                 .phy_mask       = ~(1U << 17),
48         },
49 };
50
51 #ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
52 static struct spi_board_info spi0_board_info[] __initdata = {
53         {
54                 /* QVGA display */
55                 .modalias       = "ltv350qv",
56                 .max_speed_hz   = 16000000,
57                 .chip_select    = 1,
58                 .mode           = SPI_MODE_3,
59         },
60 };
61 #endif
62
63 #ifdef CONFIG_BOARD_ATSTK1002_SPI1
64 static struct spi_board_info spi1_board_info[] __initdata = { {
65         /* patch in custom entries here */
66 } };
67 #endif
68
69 /*
70  * The next two functions should go away as the boot loader is
71  * supposed to initialize the macb address registers with a valid
72  * ethernet address. But we need to keep it around for a while until
73  * we can be reasonably sure the boot loader does this.
74  *
75  * The phy_id is ignored as the driver will probe for it.
76  */
77 static int __init parse_tag_ethernet(struct tag *tag)
78 {
79         int i;
80
81         i = tag->u.ethernet.mac_index;
82         if (i < ARRAY_SIZE(hw_addr))
83                 memcpy(hw_addr[i].addr, tag->u.ethernet.hw_address,
84                        sizeof(hw_addr[i].addr));
85
86         return 0;
87 }
88 __tagtable(ATAG_ETHERNET, parse_tag_ethernet);
89
90 static void __init set_hw_addr(struct platform_device *pdev)
91 {
92         struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
93         const u8 *addr;
94         void __iomem *regs;
95         struct clk *pclk;
96
97         if (!res)
98                 return;
99         if (pdev->id >= ARRAY_SIZE(hw_addr))
100                 return;
101
102         addr = hw_addr[pdev->id].addr;
103         if (!is_valid_ether_addr(addr))
104                 return;
105
106         /*
107          * Since this is board-specific code, we'll cheat and use the
108          * physical address directly as we happen to know that it's
109          * the same as the virtual address.
110          */
111         regs = (void __iomem __force *)res->start;
112         pclk = clk_get(&pdev->dev, "pclk");
113         if (!pclk)
114                 return;
115
116         clk_enable(pclk);
117         __raw_writel((addr[3] << 24) | (addr[2] << 16)
118                      | (addr[1] << 8) | addr[0], regs + 0x98);
119         __raw_writel((addr[5] << 8) | addr[4], regs + 0x9c);
120         clk_disable(pclk);
121         clk_put(pclk);
122 }
123
124 #ifdef CONFIG_BOARD_ATSTK1002_J2_LED
125
126 static struct gpio_led stk_j2_led[] = {
127 #ifdef CONFIG_BOARD_ATSTK1002_J2_LED8
128 #define LEDSTRING "J2 jumpered to LED8"
129         { .name = "led0:amber", .gpio = GPIO_PIN_PB( 8), },
130         { .name = "led1:amber", .gpio = GPIO_PIN_PB( 9), },
131         { .name = "led2:amber", .gpio = GPIO_PIN_PB(10), },
132         { .name = "led3:amber", .gpio = GPIO_PIN_PB(13), },
133         { .name = "led4:amber", .gpio = GPIO_PIN_PB(14), },
134         { .name = "led5:amber", .gpio = GPIO_PIN_PB(15), },
135         { .name = "led6:amber", .gpio = GPIO_PIN_PB(16), },
136         { .name = "led7:amber", .gpio = GPIO_PIN_PB(30),
137                         .default_trigger = "heartbeat", },
138 #else   /* RGB */
139 #define LEDSTRING "J2 jumpered to RGB LEDs"
140         { .name = "r1:red",     .gpio = GPIO_PIN_PB( 8), },
141         { .name = "g1:green",   .gpio = GPIO_PIN_PB(10), },
142         { .name = "b1:blue",    .gpio = GPIO_PIN_PB(14), },
143
144         { .name = "r2:red",     .gpio = GPIO_PIN_PB( 9),
145                         .default_trigger = "heartbeat", },
146         { .name = "g2:green",   .gpio = GPIO_PIN_PB(13), },
147         { .name = "b2:blue",    .gpio = GPIO_PIN_PB(15),
148                         .default_trigger = "heartbeat", },
149         /* PB16, PB30 unused */
150 #endif
151 };
152
153 static struct gpio_led_platform_data stk_j2_led_data = {
154         .num_leds       = ARRAY_SIZE(stk_j2_led),
155         .leds           = stk_j2_led,
156 };
157
158 static struct platform_device stk_j2_led_dev = {
159         .name           = "leds-gpio",
160         .id             = 2,    /* gpio block J2 */
161         .dev            = {
162                 .platform_data  = &stk_j2_led_data,
163         },
164 };
165
166 static void setup_j2_leds(void)
167 {
168         unsigned        i;
169
170         for (i = 0; i < ARRAY_SIZE(stk_j2_led); i++)
171                 at32_select_gpio(stk_j2_led[i].gpio, AT32_GPIOF_OUTPUT);
172
173         printk("STK1002: " LEDSTRING "\n");
174         platform_device_register(&stk_j2_led_dev);
175 }
176
177 #else
178 static void setup_j2_leds(void)
179 {
180 }
181 #endif
182
183 void __init setup_board(void)
184 {
185 #ifdef  CONFIG_BOARD_ATSTK1002_SW2_CUSTOM
186         at32_map_usart(0, 1);   /* USART 0/B: /dev/ttyS1, IRDA */
187 #else
188         at32_map_usart(1, 0);   /* USART 1/A: /dev/ttyS0, DB9 */
189 #endif
190         /* USART 2/unused: expansion connector */
191         at32_map_usart(3, 2);   /* USART 3/C: /dev/ttyS2, DB9 */
192
193         at32_setup_serial_console(0);
194 }
195
196 static int __init atstk1002_init(void)
197 {
198         /*
199          * ATSTK1000 uses 32-bit SDRAM interface. Reserve the
200          * SDRAM-specific pins so that nobody messes with them.
201          */
202         at32_reserve_pin(GPIO_PIN_PE(0));       /* DATA[16]     */
203         at32_reserve_pin(GPIO_PIN_PE(1));       /* DATA[17]     */
204         at32_reserve_pin(GPIO_PIN_PE(2));       /* DATA[18]     */
205         at32_reserve_pin(GPIO_PIN_PE(3));       /* DATA[19]     */
206         at32_reserve_pin(GPIO_PIN_PE(4));       /* DATA[20]     */
207         at32_reserve_pin(GPIO_PIN_PE(5));       /* DATA[21]     */
208         at32_reserve_pin(GPIO_PIN_PE(6));       /* DATA[22]     */
209         at32_reserve_pin(GPIO_PIN_PE(7));       /* DATA[23]     */
210         at32_reserve_pin(GPIO_PIN_PE(8));       /* DATA[24]     */
211         at32_reserve_pin(GPIO_PIN_PE(9));       /* DATA[25]     */
212         at32_reserve_pin(GPIO_PIN_PE(10));      /* DATA[26]     */
213         at32_reserve_pin(GPIO_PIN_PE(11));      /* DATA[27]     */
214         at32_reserve_pin(GPIO_PIN_PE(12));      /* DATA[28]     */
215         at32_reserve_pin(GPIO_PIN_PE(13));      /* DATA[29]     */
216         at32_reserve_pin(GPIO_PIN_PE(14));      /* DATA[30]     */
217         at32_reserve_pin(GPIO_PIN_PE(15));      /* DATA[31]     */
218         at32_reserve_pin(GPIO_PIN_PE(26));      /* SDCS         */
219
220         at32_add_system_devices();
221
222 #ifdef  CONFIG_BOARD_ATSTK1002_SW2_CUSTOM
223         at32_add_device_usart(1);
224 #else
225         at32_add_device_usart(0);
226 #endif
227         at32_add_device_usart(2);
228
229 #ifndef CONFIG_BOARD_ATSTK1002_SW6_CUSTOM
230         set_hw_addr(at32_add_device_eth(0, &eth_data[0]));
231 #endif
232 #ifndef CONFIG_BOARD_ATSTK1002_SW1_CUSTOM
233         at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
234 #endif
235 #ifdef CONFIG_BOARD_ATSTK1002_SPI1
236         at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info));
237 #endif
238 #ifdef CONFIG_BOARD_ATSTK1002_SW5_CUSTOM
239         set_hw_addr(at32_add_device_eth(1, &eth_data[1]));
240 #else
241         at32_add_device_lcdc(0, &atstk1000_lcdc_data,
242                              fbmem_start, fbmem_size);
243 #endif
244 #ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
245         at32_add_device_ssc(0, ATMEL_SSC_TX);
246 #endif
247
248         setup_j2_leds();
249
250         return 0;
251 }
252 postcore_initcall(atstk1002_init);