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10#include <linux/clk.h>
11#include <linux/etherdevice.h>
12#include <linux/i2c.h>
13#include <linux/i2c-gpio.h>
14#include <linux/gpio.h>
15#include <linux/init.h>
16#include <linux/linkage.h>
17#include <linux/platform_device.h>
18#include <linux/types.h>
19#include <linux/leds.h>
20#include <linux/spi/spi.h>
21#include <linux/spi/ads7846.h>
22#include <linux/irq.h>
23#include <linux/fb.h>
24#include <linux/atmel-mci.h>
25
26#include <asm/io.h>
27#include <asm/setup.h>
28#include <asm/gpio.h>
29
30#include <mach/at32ap700x.h>
31#include <mach/board.h>
32#include <mach/init.h>
33#include <mach/portmux.h>
34
35#include "merisc.h"
36
37
38static int merisc_board_id;
39
40
41struct tag *bootloader_tags __initdata;
42
43
44unsigned long at32_board_osc_rates[3] = {
45 [0] = 32768,
46 [1] = 20000000,
47 [2] = 12000000,
48};
49
50struct eth_addr {
51 u8 addr[6];
52};
53
54static struct eth_addr __initdata hw_addr[2];
55static struct eth_platform_data __initdata eth_data[2];
56
57static int ads7846_get_pendown_state_PB26(void)
58{
59 return !gpio_get_value(GPIO_PIN_PB(26));
60}
61
62static int ads7846_get_pendown_state_PB28(void)
63{
64 return !gpio_get_value(GPIO_PIN_PB(28));
65}
66
67static struct ads7846_platform_data __initdata ads7846_data = {
68 .model = 7846,
69 .vref_delay_usecs = 100,
70 .vref_mv = 0,
71 .keep_vref_on = 0,
72 .settle_delay_usecs = 150,
73 .penirq_recheck_delay_usecs = 1,
74 .x_plate_ohms = 800,
75 .debounce_rep = 4,
76 .debounce_max = 10,
77 .debounce_tol = 50,
78 .get_pendown_state = ads7846_get_pendown_state_PB26,
79 .filter_init = NULL,
80 .filter = NULL,
81 .filter_cleanup = NULL,
82};
83
84static struct spi_board_info __initdata spi0_board_info[] = {
85 {
86 .modalias = "ads7846",
87 .max_speed_hz = 3250000,
88 .chip_select = 0,
89 .bus_num = 0,
90 .platform_data = &ads7846_data,
91 .mode = SPI_MODE_0,
92 },
93};
94
95static struct mci_platform_data __initdata mci0_data = {
96 .slot[0] = {
97 .bus_width = 4,
98 .detect_pin = GPIO_PIN_PE(19),
99 .wp_pin = GPIO_PIN_PE(20),
100 },
101};
102
103static int __init parse_tag_ethernet(struct tag *tag)
104{
105 int i;
106
107 i = tag->u.ethernet.mac_index;
108 if (i < ARRAY_SIZE(hw_addr)) {
109 memcpy(hw_addr[i].addr, tag->u.ethernet.hw_address,
110 sizeof(hw_addr[i].addr));
111 }
112
113 return 0;
114}
115__tagtable(ATAG_ETHERNET, parse_tag_ethernet);
116
117static void __init set_hw_addr(struct platform_device *pdev)
118{
119 struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
120 const u8 *addr;
121 void __iomem *regs;
122 struct clk *pclk;
123
124 if (!res)
125 return;
126
127 if (pdev->id >= ARRAY_SIZE(hw_addr))
128 return;
129
130 addr = hw_addr[pdev->id].addr;
131 if (!is_valid_ether_addr(addr))
132 return;
133
134 regs = (void __iomem __force *)res->start;
135 pclk = clk_get(&pdev->dev, "pclk");
136 if (!pclk)
137 return;
138
139 clk_enable(pclk);
140 __raw_writel((addr[3] << 24) | (addr[2] << 16)
141 | (addr[1] << 8) | addr[0], regs + 0x98);
142 __raw_writel((addr[5] << 8) | addr[4], regs + 0x9c);
143 clk_disable(pclk);
144 clk_put(pclk);
145}
146
147static struct i2c_gpio_platform_data i2c_gpio_data = {
148 .sda_pin = GPIO_PIN_PA(6),
149 .scl_pin = GPIO_PIN_PA(7),
150 .sda_is_open_drain = 1,
151 .scl_is_open_drain = 1,
152 .udelay = 2,
153};
154
155static struct platform_device i2c_gpio_device = {
156 .name = "i2c-gpio",
157 .id = 0,
158 .dev = {
159 .platform_data = &i2c_gpio_data,
160 },
161};
162
163static struct i2c_board_info __initdata i2c_info[] = {
164 {
165 I2C_BOARD_INFO("pcf8563", 0x51)
166 },
167};
168
169#ifdef CONFIG_LEDS_ATMEL_PWM
170static struct gpio_led stk_pwm_led[] = {
171 {
172 .name = "backlight",
173 .gpio = 0,
174 },
175};
176
177static struct gpio_led_platform_data stk_pwm_led_data = {
178 .num_leds = ARRAY_SIZE(stk_pwm_led),
179 .leds = stk_pwm_led,
180};
181
182static struct platform_device stk_pwm_led_dev = {
183 .name = "leds-atmel-pwm",
184 .id = -1,
185 .dev = {
186 .platform_data = &stk_pwm_led_data,
187 },
188};
189#endif
190
191const char *merisc_model(void)
192{
193 switch (merisc_board_id) {
194 case 0:
195 case 1:
196 return "500-01";
197 case 2:
198 return "BT";
199 default:
200 return "Unknown";
201 }
202}
203
204const char *merisc_revision(void)
205{
206 switch (merisc_board_id) {
207 case 0:
208 return "B";
209 case 1:
210 return "D";
211 case 2:
212 return "A";
213 default:
214 return "Unknown";
215 }
216}
217
218static void detect_merisc_board_id(void)
219{
220
221 at32_select_gpio(GPIO_PIN_PA(24), AT32_GPIOF_PULLUP);
222 at32_select_gpio(GPIO_PIN_PA(25), AT32_GPIOF_PULLUP);
223 at32_select_gpio(GPIO_PIN_PA(26), AT32_GPIOF_PULLUP);
224 at32_select_gpio(GPIO_PIN_PA(27), AT32_GPIOF_PULLUP);
225
226 merisc_board_id = !gpio_get_value(GPIO_PIN_PA(24)) +
227 !gpio_get_value(GPIO_PIN_PA(25)) * 2 +
228 !gpio_get_value(GPIO_PIN_PA(26)) * 4 +
229 !gpio_get_value(GPIO_PIN_PA(27)) * 8;
230}
231
232void __init setup_board(void)
233{
234 at32_map_usart(0, 0, 0);
235 at32_map_usart(1, 1, 0);
236 at32_map_usart(3, 3, 0);
237 at32_setup_serial_console(1);
238}
239
240static int __init merisc_init(void)
241{
242 detect_merisc_board_id();
243
244 printk(KERN_NOTICE "BOARD: Merisc %s revision %s\n", merisc_model(),
245 merisc_revision());
246
247
248 at32_reserve_pin(GPIO_PIOE_BASE, ATMEL_EBI_PE_DATA_ALL | (1 << 26));
249
250 if (merisc_board_id >= 1)
251 at32_map_usart(2, 2, 0);
252
253 at32_add_device_usart(0);
254 at32_add_device_usart(1);
255 if (merisc_board_id >= 1)
256 at32_add_device_usart(2);
257 at32_add_device_usart(3);
258 set_hw_addr(at32_add_device_eth(0, ð_data[0]));
259
260
261 if (merisc_board_id == 0) {
262 ads7846_data.get_pendown_state = ads7846_get_pendown_state_PB26;
263 at32_select_periph(GPIO_PIOB_BASE, 1 << 26,
264 GPIO_PERIPH_A, AT32_GPIOF_PULLUP);
265 spi0_board_info[0].irq = AT32_EXTINT(1);
266 } else {
267 ads7846_data.get_pendown_state = ads7846_get_pendown_state_PB28;
268 at32_select_periph(GPIO_PIOB_BASE, 1 << 28, GPIO_PERIPH_A,
269 AT32_GPIOF_PULLUP);
270 spi0_board_info[0].irq = AT32_EXTINT(3);
271 }
272
273
274 at32_select_gpio(GPIO_PIN_PA(4), AT32_GPIOF_PULLUP);
275
276 at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
277
278 at32_add_device_mci(0, &mci0_data);
279
280#ifdef CONFIG_LEDS_ATMEL_PWM
281 at32_add_device_pwm((1 << 0) | (1 << 2));
282 platform_device_register(&stk_pwm_led_dev);
283#else
284 at32_add_device_pwm((1 << 2));
285#endif
286
287 at32_select_gpio(i2c_gpio_data.sda_pin,
288 AT32_GPIOF_MULTIDRV | AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);
289 at32_select_gpio(i2c_gpio_data.scl_pin,
290 AT32_GPIOF_MULTIDRV | AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);
291 platform_device_register(&i2c_gpio_device);
292
293 i2c_register_board_info(0, i2c_info, ARRAY_SIZE(i2c_info));
294
295 return 0;
296}
297postcore_initcall(merisc_init);
298
