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Documentation/iostats.txt: bit-size reference etc.
[linux-2.6/next.git] / arch / arm / mach-omap2 / board-am3517evm.c
blob10d60b7743cfa1a0b59c7ef75dacc9cd2de9532b
1 /*
2 * linux/arch/arm/mach-omap2/board-am3517evm.c
3 *
4 * Copyright (C) 2009 Texas Instruments Incorporated
5 * Author: Ranjith Lohithakshan <ranjithl@ti.com>
6 *
7 * Based on mach-omap2/board-omap3evm.c
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation version 2.
12 *
13 * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
14 * whether express or implied; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 */
18
19 #include <linux/kernel.h>
20 #include <linux/init.h>
21 #include <linux/clk.h>
22 #include <linux/platform_device.h>
23 #include <linux/gpio.h>
24 #include <linux/i2c/pca953x.h>
25 #include <linux/can/platform/ti_hecc.h>
26 #include <linux/davinci_emac.h>
27
28 #include <mach/hardware.h>
29 #include <mach/am35xx.h>
30 #include <asm/mach-types.h>
31 #include <asm/mach/arch.h>
32 #include <asm/mach/map.h>
33
34 #include <plat/board.h>
35 #include <plat/common.h>
36 #include <plat/usb.h>
37 #include <plat/display.h>
38 #include <plat/panel-generic-dpi.h>
39
40 #include "mux.h"
41 #include "control.h"
42
43 #define AM35XX_EVM_MDIO_FREQUENCY (1000000)
44
45 static struct mdio_platform_data am3517_evm_mdio_pdata = {
46 .bus_freq = AM35XX_EVM_MDIO_FREQUENCY,
47 };
48
49 static struct resource am3517_mdio_resources[] = {
50 {
51 .start = AM35XX_IPSS_EMAC_BASE + AM35XX_EMAC_MDIO_OFFSET,
52 .end = AM35XX_IPSS_EMAC_BASE + AM35XX_EMAC_MDIO_OFFSET +
53 SZ_4K - 1,
54 .flags = IORESOURCE_MEM,
55 },
56 };
57
58 static struct platform_device am3517_mdio_device = {
59 .name = "davinci_mdio",
60 .id = 0,
61 .num_resources = ARRAY_SIZE(am3517_mdio_resources),
62 .resource = am3517_mdio_resources,
63 .dev.platform_data = &am3517_evm_mdio_pdata,
64 };
65
66 static struct emac_platform_data am3517_evm_emac_pdata = {
67 .rmii_en = 1,
68 };
69
70 static struct resource am3517_emac_resources[] = {
71 {
72 .start = AM35XX_IPSS_EMAC_BASE,
73 .end = AM35XX_IPSS_EMAC_BASE + 0x2FFFF,
74 .flags = IORESOURCE_MEM,
75 },
76 {
77 .start = INT_35XX_EMAC_C0_RXTHRESH_IRQ,
78 .end = INT_35XX_EMAC_C0_RXTHRESH_IRQ,
79 .flags = IORESOURCE_IRQ,
80 },
81 {
82 .start = INT_35XX_EMAC_C0_RX_PULSE_IRQ,
83 .end = INT_35XX_EMAC_C0_RX_PULSE_IRQ,
84 .flags = IORESOURCE_IRQ,
85 },
86 {
87 .start = INT_35XX_EMAC_C0_TX_PULSE_IRQ,
88 .end = INT_35XX_EMAC_C0_TX_PULSE_IRQ,
89 .flags = IORESOURCE_IRQ,
90 },
91 {
92 .start = INT_35XX_EMAC_C0_MISC_PULSE_IRQ,
93 .end = INT_35XX_EMAC_C0_MISC_PULSE_IRQ,
94 .flags = IORESOURCE_IRQ,
95 },
96 };
97
98 static struct platform_device am3517_emac_device = {
99 .name = "davinci_emac",
100 .id = -1,
101 .num_resources = ARRAY_SIZE(am3517_emac_resources),
102 .resource = am3517_emac_resources,
103 };
104
105 static void am3517_enable_ethernet_int(void)
106 {
107 u32 regval;
108
109 regval = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
110 regval = (regval | AM35XX_CPGMAC_C0_RX_PULSE_CLR |
111 AM35XX_CPGMAC_C0_TX_PULSE_CLR |
112 AM35XX_CPGMAC_C0_MISC_PULSE_CLR |
113 AM35XX_CPGMAC_C0_RX_THRESH_CLR);
114 omap_ctrl_writel(regval, AM35XX_CONTROL_LVL_INTR_CLEAR);
115 regval = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
116 }
117
118 static void am3517_disable_ethernet_int(void)
119 {
120 u32 regval;
121
122 regval = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
123 regval = (regval | AM35XX_CPGMAC_C0_RX_PULSE_CLR |
124 AM35XX_CPGMAC_C0_TX_PULSE_CLR);
125 omap_ctrl_writel(regval, AM35XX_CONTROL_LVL_INTR_CLEAR);
126 regval = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
127 }
128
129 static void am3517_evm_ethernet_init(struct emac_platform_data *pdata)
130 {
131 unsigned int regval;
132
133 pdata->ctrl_reg_offset = AM35XX_EMAC_CNTRL_OFFSET;
134 pdata->ctrl_mod_reg_offset = AM35XX_EMAC_CNTRL_MOD_OFFSET;
135 pdata->ctrl_ram_offset = AM35XX_EMAC_CNTRL_RAM_OFFSET;
136 pdata->ctrl_ram_size = AM35XX_EMAC_CNTRL_RAM_SIZE;
137 pdata->version = EMAC_VERSION_2;
138 pdata->hw_ram_addr = AM35XX_EMAC_HW_RAM_ADDR;
139 pdata->interrupt_enable = am3517_enable_ethernet_int;
140 pdata->interrupt_disable = am3517_disable_ethernet_int;
141 am3517_emac_device.dev.platform_data = pdata;
142 platform_device_register(&am3517_emac_device);
143 platform_device_register(&am3517_mdio_device);
144 clk_add_alias(NULL, dev_name(&am3517_mdio_device.dev),
145 NULL, &am3517_emac_device.dev);
146
147 regval = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET);
148 regval = regval & (~(AM35XX_CPGMACSS_SW_RST));
149 omap_ctrl_writel(regval, AM35XX_CONTROL_IP_SW_RESET);
150 regval = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET);
151
152 return ;
153 }
154
155
156
157 #define LCD_PANEL_PWR 176
158 #define LCD_PANEL_BKLIGHT_PWR 182
159 #define LCD_PANEL_PWM 181
160
161 static struct i2c_board_info __initdata am3517evm_i2c1_boardinfo[] = {
162 {
163 I2C_BOARD_INFO("s35390a", 0x30),
164 },
165 };
166
167 /*
168 * RTC - S35390A
169 */
170 #define GPIO_RTCS35390A_IRQ 55
171
172 static void __init am3517_evm_rtc_init(void)
173 {
174 int r;
175
176 omap_mux_init_gpio(GPIO_RTCS35390A_IRQ, OMAP_PIN_INPUT_PULLUP);
177 r = gpio_request(GPIO_RTCS35390A_IRQ, "rtcs35390a-irq");
178 if (r < 0) {
179 printk(KERN_WARNING "failed to request GPIO#%d\n",
180 GPIO_RTCS35390A_IRQ);
181 return;
182 }
183 r = gpio_direction_input(GPIO_RTCS35390A_IRQ);
184 if (r < 0) {
185 printk(KERN_WARNING "GPIO#%d cannot be configured as input\n",
186 GPIO_RTCS35390A_IRQ);
187 gpio_free(GPIO_RTCS35390A_IRQ);
188 return;
189 }
190 am3517evm_i2c1_boardinfo[0].irq = gpio_to_irq(GPIO_RTCS35390A_IRQ);
191 }
192
193 /*
194 * I2C GPIO Expander - TCA6416
195 */
196
197 /* Mounted on Base-Board */
198 static struct pca953x_platform_data am3517evm_gpio_expander_info_0 = {
199 .gpio_base = OMAP_MAX_GPIO_LINES,
200 };
201 static struct i2c_board_info __initdata am3517evm_i2c2_boardinfo[] = {
202 {
203 I2C_BOARD_INFO("tca6416", 0x21),
204 .platform_data = &am3517evm_gpio_expander_info_0,
205 },
206 };
207
208 /* Mounted on UI Card */
209 static struct pca953x_platform_data am3517evm_ui_gpio_expander_info_1 = {
210 .gpio_base = OMAP_MAX_GPIO_LINES + 16,
211 };
212 static struct pca953x_platform_data am3517evm_ui_gpio_expander_info_2 = {
213 .gpio_base = OMAP_MAX_GPIO_LINES + 32,
214 };
215 static struct i2c_board_info __initdata am3517evm_i2c3_boardinfo[] = {
216 {
217 I2C_BOARD_INFO("tca6416", 0x20),
218 .platform_data = &am3517evm_ui_gpio_expander_info_1,
219 },
220 {
221 I2C_BOARD_INFO("tca6416", 0x21),
222 .platform_data = &am3517evm_ui_gpio_expander_info_2,
223 },
224 };
225
226 static int __init am3517_evm_i2c_init(void)
227 {
228 omap_register_i2c_bus(1, 400, NULL, 0);
229 omap_register_i2c_bus(2, 400, am3517evm_i2c2_boardinfo,
230 ARRAY_SIZE(am3517evm_i2c2_boardinfo));
231 omap_register_i2c_bus(3, 400, am3517evm_i2c3_boardinfo,
232 ARRAY_SIZE(am3517evm_i2c3_boardinfo));
233
234 return 0;
235 }
236
237 static int lcd_enabled;
238 static int dvi_enabled;
239
240 #if defined(CONFIG_PANEL_SHARP_LQ043T1DG01) || \
241 defined(CONFIG_PANEL_SHARP_LQ043T1DG01_MODULE)
242 static void __init am3517_evm_display_init(void)
243 {
244 int r;
245
246 omap_mux_init_gpio(LCD_PANEL_PWR, OMAP_PIN_INPUT_PULLUP);
247 omap_mux_init_gpio(LCD_PANEL_BKLIGHT_PWR, OMAP_PIN_INPUT_PULLDOWN);
248 omap_mux_init_gpio(LCD_PANEL_PWM, OMAP_PIN_INPUT_PULLDOWN);
249 /*
250 * Enable GPIO 182 = LCD Backlight Power
251 */
252 r = gpio_request(LCD_PANEL_BKLIGHT_PWR, "lcd_backlight_pwr");
253 if (r) {
254 printk(KERN_ERR "failed to get lcd_backlight_pwr\n");
255 return;
256 }
257 gpio_direction_output(LCD_PANEL_BKLIGHT_PWR, 1);
258 /*
259 * Enable GPIO 181 = LCD Panel PWM
260 */
261 r = gpio_request(LCD_PANEL_PWM, "lcd_pwm");
262 if (r) {
263 printk(KERN_ERR "failed to get lcd_pwm\n");
264 goto err_1;
265 }
266 gpio_direction_output(LCD_PANEL_PWM, 1);
267 /*
268 * Enable GPIO 176 = LCD Panel Power enable pin
269 */
270 r = gpio_request(LCD_PANEL_PWR, "lcd_panel_pwr");
271 if (r) {
272 printk(KERN_ERR "failed to get lcd_panel_pwr\n");
273 goto err_2;
274 }
275 gpio_direction_output(LCD_PANEL_PWR, 1);
276
277 printk(KERN_INFO "Display initialized successfully\n");
278 return;
279
280 err_2:
281 gpio_free(LCD_PANEL_PWM);
282 err_1:
283 gpio_free(LCD_PANEL_BKLIGHT_PWR);
284 }
285 #else
286 static void __init am3517_evm_display_init(void) {}
287 #endif
288
289 static int am3517_evm_panel_enable_lcd(struct omap_dss_device *dssdev)
290 {
291 if (dvi_enabled) {
292 printk(KERN_ERR "cannot enable LCD, DVI is enabled\n");
293 return -EINVAL;
294 }
295 gpio_set_value(LCD_PANEL_PWR, 1);
296 lcd_enabled = 1;
297
298 return 0;
299 }
300
301 static void am3517_evm_panel_disable_lcd(struct omap_dss_device *dssdev)
302 {
303 gpio_set_value(LCD_PANEL_PWR, 0);
304 lcd_enabled = 0;
305 }
306
307 static struct panel_generic_dpi_data lcd_panel = {
308 .name = "sharp_lq",
309 .platform_enable = am3517_evm_panel_enable_lcd,
310 .platform_disable = am3517_evm_panel_disable_lcd,
311 };
312
313 static struct omap_dss_device am3517_evm_lcd_device = {
314 .type = OMAP_DISPLAY_TYPE_DPI,
315 .name = "lcd",
316 .driver_name = "generic_dpi_panel",
317 .data = &lcd_panel,
318 .phy.dpi.data_lines = 16,
319 };
320
321 static int am3517_evm_panel_enable_tv(struct omap_dss_device *dssdev)
322 {
323 return 0;
324 }
325
326 static void am3517_evm_panel_disable_tv(struct omap_dss_device *dssdev)
327 {
328 }
329
330 static struct omap_dss_device am3517_evm_tv_device = {
331 .type = OMAP_DISPLAY_TYPE_VENC,
332 .name = "tv",
333 .driver_name = "venc",
334 .phy.venc.type = OMAP_DSS_VENC_TYPE_SVIDEO,
335 .platform_enable = am3517_evm_panel_enable_tv,
336 .platform_disable = am3517_evm_panel_disable_tv,
337 };
338
339 static int am3517_evm_panel_enable_dvi(struct omap_dss_device *dssdev)
340 {
341 if (lcd_enabled) {
342 printk(KERN_ERR "cannot enable DVI, LCD is enabled\n");
343 return -EINVAL;
344 }
345 dvi_enabled = 1;
346
347 return 0;
348 }
349
350 static void am3517_evm_panel_disable_dvi(struct omap_dss_device *dssdev)
351 {
352 dvi_enabled = 0;
353 }
354
355 static struct panel_generic_dpi_data dvi_panel = {
356 .name = "generic",
357 .platform_enable = am3517_evm_panel_enable_dvi,
358 .platform_disable = am3517_evm_panel_disable_dvi,
359 };
360
361 static struct omap_dss_device am3517_evm_dvi_device = {
362 .type = OMAP_DISPLAY_TYPE_DPI,
363 .name = "dvi",
364 .driver_name = "generic_dpi_panel",
365 .data = &dvi_panel,
366 .phy.dpi.data_lines = 24,
367 };
368
369 static struct omap_dss_device *am3517_evm_dss_devices[] = {
370 &am3517_evm_lcd_device,
371 &am3517_evm_tv_device,
372 &am3517_evm_dvi_device,
373 };
374
375 static struct omap_dss_board_info am3517_evm_dss_data = {
376 .num_devices = ARRAY_SIZE(am3517_evm_dss_devices),
377 .devices = am3517_evm_dss_devices,
378 .default_device = &am3517_evm_lcd_device,
379 };
380
381 static struct platform_device am3517_evm_dss_device = {
382 .name = "omapdss",
383 .id = -1,
384 .dev = {
385 .platform_data = &am3517_evm_dss_data,
386 },
387 };
388
389 /*
390 * Board initialization
391 */
392 static struct omap_board_config_kernel am3517_evm_config[] __initdata = {
393 };
394
395 static struct platform_device *am3517_evm_devices[] __initdata = {
396 &am3517_evm_dss_device,
397 };
398
399 static void __init am3517_evm_init_irq(void)
400 {
401 omap_board_config = am3517_evm_config;
402 omap_board_config_size = ARRAY_SIZE(am3517_evm_config);
403 omap2_init_common_infrastructure();
404 omap2_init_common_devices(NULL, NULL);
405 omap_init_irq();
406 }
407
408 static struct omap_musb_board_data musb_board_data = {
409 .interface_type = MUSB_INTERFACE_ULPI,
410 .mode = MUSB_OTG,
411 .power = 500,
412 };
413
414 static __init void am3517_evm_musb_init(void)
415 {
416 u32 devconf2;
417
418 /*
419 * Set up USB clock/mode in the DEVCONF2 register.
420 */
421 devconf2 = omap_ctrl_readl(AM35XX_CONTROL_DEVCONF2);
422
423 /* USB2.0 PHY reference clock is 13 MHz */
424 devconf2 &= ~(CONF2_REFFREQ | CONF2_OTGMODE | CONF2_PHY_GPIOMODE);
425 devconf2 |= CONF2_REFFREQ_13MHZ | CONF2_SESENDEN | CONF2_VBDTCTEN
426 | CONF2_DATPOL;
427
428 omap_ctrl_writel(devconf2, AM35XX_CONTROL_DEVCONF2);
429
430 usb_musb_init(&musb_board_data);
431 }
432
433 static const struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
434 .port_mode[0] = EHCI_HCD_OMAP_MODE_PHY,
435 #if defined(CONFIG_PANEL_SHARP_LQ043T1DG01) || \
436 defined(CONFIG_PANEL_SHARP_LQ043T1DG01_MODULE)
437 .port_mode[1] = EHCI_HCD_OMAP_MODE_UNKNOWN,
438 #else
439 .port_mode[1] = EHCI_HCD_OMAP_MODE_PHY,
440 #endif
441 .port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,
442
443 .phy_reset = true,
444 .reset_gpio_port[0] = 57,
445 .reset_gpio_port[1] = -EINVAL,
446 .reset_gpio_port[2] = -EINVAL
447 };
448
449 #ifdef CONFIG_OMAP_MUX
450 static struct omap_board_mux board_mux[] __initdata = {
451 /* USB OTG DRVVBUS offset = 0x212 */
452 OMAP3_MUX(SAD2D_MCAD23, OMAP_MUX_MODE0 | OMAP_PIN_INPUT_PULLDOWN),
453 { .reg_offset = OMAP_MUX_TERMINATOR },
454 };
455 #endif
456
457
458 static struct resource am3517_hecc_resources[] = {
459 {
460 .start = AM35XX_IPSS_HECC_BASE,
461 .end = AM35XX_IPSS_HECC_BASE + 0x3FFF,
462 .flags = IORESOURCE_MEM,
463 },
464 {
465 .start = INT_35XX_HECC0_IRQ,
466 .end = INT_35XX_HECC0_IRQ,
467 .flags = IORESOURCE_IRQ,
468 },
469 };
470
471 static struct platform_device am3517_hecc_device = {
472 .name = "ti_hecc",
473 .id = -1,
474 .num_resources = ARRAY_SIZE(am3517_hecc_resources),
475 .resource = am3517_hecc_resources,
476 };
477
478 static struct ti_hecc_platform_data am3517_evm_hecc_pdata = {
479 .scc_hecc_offset = AM35XX_HECC_SCC_HECC_OFFSET,
480 .scc_ram_offset = AM35XX_HECC_SCC_RAM_OFFSET,
481 .hecc_ram_offset = AM35XX_HECC_RAM_OFFSET,
482 .mbx_offset = AM35XX_HECC_MBOX_OFFSET,
483 .int_line = AM35XX_HECC_INT_LINE,
484 .version = AM35XX_HECC_VERSION,
485 };
486
487 static void am3517_evm_hecc_init(struct ti_hecc_platform_data *pdata)
488 {
489 am3517_hecc_device.dev.platform_data = pdata;
490 platform_device_register(&am3517_hecc_device);
491 }
492
493 static void __init am3517_evm_init(void)
494 {
495 omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
496
497 am3517_evm_i2c_init();
498 platform_add_devices(am3517_evm_devices,
499 ARRAY_SIZE(am3517_evm_devices));
500
501 omap_serial_init();
502
503 /* Configure GPIO for EHCI port */
504 omap_mux_init_gpio(57, OMAP_PIN_OUTPUT);
505 usb_ehci_init(&ehci_pdata);
506 am3517_evm_hecc_init(&am3517_evm_hecc_pdata);
507 /* DSS */
508 am3517_evm_display_init();
509
510 /* RTC - S35390A */
511 am3517_evm_rtc_init();
512
513 i2c_register_board_info(1, am3517evm_i2c1_boardinfo,
514 ARRAY_SIZE(am3517evm_i2c1_boardinfo));
515 /*Ethernet*/
516 am3517_evm_ethernet_init(&am3517_evm_emac_pdata);
517
518 /* MUSB */
519 am3517_evm_musb_init();
520 }
521
522 MACHINE_START(OMAP3517EVM, "OMAP3517/AM3517 EVM")
523 .boot_params = 0x80000100,
524 .map_io = omap3_map_io,
525 .reserve = omap_reserve,
526 .init_irq = am3517_evm_init_irq,
527 .init_machine = am3517_evm_init,
528 .timer = &omap_timer,
529 MACHINE_END
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