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dlm: Handle application limited situations properly.
[linux-2.6.git] / arch / arm / mach-omap2 / board-am3517evm.c
blob07399505312b19fac8331d1d0b5367e85418a422
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
39 #include "mux.h"
40 #include "control.h"
41
42 #define AM35XX_EVM_MDIO_FREQUENCY (1000000)
43
44 static struct mdio_platform_data am3517_evm_mdio_pdata = {
45 .bus_freq = AM35XX_EVM_MDIO_FREQUENCY,
46 };
47
48 static struct resource am3517_mdio_resources[] = {
49 {
50 .start = AM35XX_IPSS_EMAC_BASE + AM35XX_EMAC_MDIO_OFFSET,
51 .end = AM35XX_IPSS_EMAC_BASE + AM35XX_EMAC_MDIO_OFFSET +
52 SZ_4K - 1,
53 .flags = IORESOURCE_MEM,
54 },
55 };
56
57 static struct platform_device am3517_mdio_device = {
58 .name = "davinci_mdio",
59 .id = 0,
60 .num_resources = ARRAY_SIZE(am3517_mdio_resources),
61 .resource = am3517_mdio_resources,
62 .dev.platform_data = &am3517_evm_mdio_pdata,
63 };
64
65 static struct emac_platform_data am3517_evm_emac_pdata = {
66 .rmii_en = 1,
67 };
68
69 static struct resource am3517_emac_resources[] = {
70 {
71 .start = AM35XX_IPSS_EMAC_BASE,
72 .end = AM35XX_IPSS_EMAC_BASE + 0x2FFFF,
73 .flags = IORESOURCE_MEM,
74 },
75 {
76 .start = INT_35XX_EMAC_C0_RXTHRESH_IRQ,
77 .end = INT_35XX_EMAC_C0_RXTHRESH_IRQ,
78 .flags = IORESOURCE_IRQ,
79 },
80 {
81 .start = INT_35XX_EMAC_C0_RX_PULSE_IRQ,
82 .end = INT_35XX_EMAC_C0_RX_PULSE_IRQ,
83 .flags = IORESOURCE_IRQ,
84 },
85 {
86 .start = INT_35XX_EMAC_C0_TX_PULSE_IRQ,
87 .end = INT_35XX_EMAC_C0_TX_PULSE_IRQ,
88 .flags = IORESOURCE_IRQ,
89 },
90 {
91 .start = INT_35XX_EMAC_C0_MISC_PULSE_IRQ,
92 .end = INT_35XX_EMAC_C0_MISC_PULSE_IRQ,
93 .flags = IORESOURCE_IRQ,
94 },
95 };
96
97 static struct platform_device am3517_emac_device = {
98 .name = "davinci_emac",
99 .id = -1,
100 .num_resources = ARRAY_SIZE(am3517_emac_resources),
101 .resource = am3517_emac_resources,
102 };
103
104 static void am3517_enable_ethernet_int(void)
105 {
106 u32 regval;
107
108 regval = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
109 regval = (regval | AM35XX_CPGMAC_C0_RX_PULSE_CLR |
110 AM35XX_CPGMAC_C0_TX_PULSE_CLR |
111 AM35XX_CPGMAC_C0_MISC_PULSE_CLR |
112 AM35XX_CPGMAC_C0_RX_THRESH_CLR);
113 omap_ctrl_writel(regval, AM35XX_CONTROL_LVL_INTR_CLEAR);
114 regval = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
115 }
116
117 static void am3517_disable_ethernet_int(void)
118 {
119 u32 regval;
120
121 regval = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
122 regval = (regval | AM35XX_CPGMAC_C0_RX_PULSE_CLR |
123 AM35XX_CPGMAC_C0_TX_PULSE_CLR);
124 omap_ctrl_writel(regval, AM35XX_CONTROL_LVL_INTR_CLEAR);
125 regval = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
126 }
127
128 static void am3517_evm_ethernet_init(struct emac_platform_data *pdata)
129 {
130 unsigned int regval;
131
132 pdata->ctrl_reg_offset = AM35XX_EMAC_CNTRL_OFFSET;
133 pdata->ctrl_mod_reg_offset = AM35XX_EMAC_CNTRL_MOD_OFFSET;
134 pdata->ctrl_ram_offset = AM35XX_EMAC_CNTRL_RAM_OFFSET;
135 pdata->ctrl_ram_size = AM35XX_EMAC_CNTRL_RAM_SIZE;
136 pdata->version = EMAC_VERSION_2;
137 pdata->hw_ram_addr = AM35XX_EMAC_HW_RAM_ADDR;
138 pdata->interrupt_enable = am3517_enable_ethernet_int;
139 pdata->interrupt_disable = am3517_disable_ethernet_int;
140 am3517_emac_device.dev.platform_data = pdata;
141 platform_device_register(&am3517_emac_device);
142 platform_device_register(&am3517_mdio_device);
143 clk_add_alias(NULL, dev_name(&am3517_mdio_device.dev),
144 NULL, &am3517_emac_device.dev);
145
146 regval = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET);
147 regval = regval & (~(AM35XX_CPGMACSS_SW_RST));
148 omap_ctrl_writel(regval, AM35XX_CONTROL_IP_SW_RESET);
149 regval = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET);
150
151 return ;
152 }
153
154
155
156 #define LCD_PANEL_PWR 176
157 #define LCD_PANEL_BKLIGHT_PWR 182
158 #define LCD_PANEL_PWM 181
159
160 static struct i2c_board_info __initdata am3517evm_i2c1_boardinfo[] = {
161 {
162 I2C_BOARD_INFO("s35390a", 0x30),
163 },
164 };
165
166 /*
167 * RTC - S35390A
168 */
169 #define GPIO_RTCS35390A_IRQ 55
170
171 static void __init am3517_evm_rtc_init(void)
172 {
173 int r;
174
175 omap_mux_init_gpio(GPIO_RTCS35390A_IRQ, OMAP_PIN_INPUT_PULLUP);
176 r = gpio_request(GPIO_RTCS35390A_IRQ, "rtcs35390a-irq");
177 if (r < 0) {
178 printk(KERN_WARNING "failed to request GPIO#%d\n",
179 GPIO_RTCS35390A_IRQ);
180 return;
181 }
182 r = gpio_direction_input(GPIO_RTCS35390A_IRQ);
183 if (r < 0) {
184 printk(KERN_WARNING "GPIO#%d cannot be configured as input\n",
185 GPIO_RTCS35390A_IRQ);
186 gpio_free(GPIO_RTCS35390A_IRQ);
187 return;
188 }
189 am3517evm_i2c1_boardinfo[0].irq = gpio_to_irq(GPIO_RTCS35390A_IRQ);
190 }
191
192 /*
193 * I2C GPIO Expander - TCA6416
194 */
195
196 /* Mounted on Base-Board */
197 static struct pca953x_platform_data am3517evm_gpio_expander_info_0 = {
198 .gpio_base = OMAP_MAX_GPIO_LINES,
199 };
200 static struct i2c_board_info __initdata am3517evm_i2c2_boardinfo[] = {
201 {
202 I2C_BOARD_INFO("tca6416", 0x21),
203 .platform_data = &am3517evm_gpio_expander_info_0,
204 },
205 };
206
207 /* Mounted on UI Card */
208 static struct pca953x_platform_data am3517evm_ui_gpio_expander_info_1 = {
209 .gpio_base = OMAP_MAX_GPIO_LINES + 16,
210 };
211 static struct pca953x_platform_data am3517evm_ui_gpio_expander_info_2 = {
212 .gpio_base = OMAP_MAX_GPIO_LINES + 32,
213 };
214 static struct i2c_board_info __initdata am3517evm_i2c3_boardinfo[] = {
215 {
216 I2C_BOARD_INFO("tca6416", 0x20),
217 .platform_data = &am3517evm_ui_gpio_expander_info_1,
218 },
219 {
220 I2C_BOARD_INFO("tca6416", 0x21),
221 .platform_data = &am3517evm_ui_gpio_expander_info_2,
222 },
223 };
224
225 static int __init am3517_evm_i2c_init(void)
226 {
227 omap_register_i2c_bus(1, 400, NULL, 0);
228 omap_register_i2c_bus(2, 400, am3517evm_i2c2_boardinfo,
229 ARRAY_SIZE(am3517evm_i2c2_boardinfo));
230 omap_register_i2c_bus(3, 400, am3517evm_i2c3_boardinfo,
231 ARRAY_SIZE(am3517evm_i2c3_boardinfo));
232
233 return 0;
234 }
235
236 static int lcd_enabled;
237 static int dvi_enabled;
238
239 #if defined(CONFIG_PANEL_SHARP_LQ043T1DG01) || \
240 defined(CONFIG_PANEL_SHARP_LQ043T1DG01_MODULE)
241 static void __init am3517_evm_display_init(void)
242 {
243 int r;
244
245 omap_mux_init_gpio(LCD_PANEL_PWR, OMAP_PIN_INPUT_PULLUP);
246 omap_mux_init_gpio(LCD_PANEL_BKLIGHT_PWR, OMAP_PIN_INPUT_PULLDOWN);
247 omap_mux_init_gpio(LCD_PANEL_PWM, OMAP_PIN_INPUT_PULLDOWN);
248 /*
249 * Enable GPIO 182 = LCD Backlight Power
250 */
251 r = gpio_request(LCD_PANEL_BKLIGHT_PWR, "lcd_backlight_pwr");
252 if (r) {
253 printk(KERN_ERR "failed to get lcd_backlight_pwr\n");
254 return;
255 }
256 gpio_direction_output(LCD_PANEL_BKLIGHT_PWR, 1);
257 /*
258 * Enable GPIO 181 = LCD Panel PWM
259 */
260 r = gpio_request(LCD_PANEL_PWM, "lcd_pwm");
261 if (r) {
262 printk(KERN_ERR "failed to get lcd_pwm\n");
263 goto err_1;
264 }
265 gpio_direction_output(LCD_PANEL_PWM, 1);
266 /*
267 * Enable GPIO 176 = LCD Panel Power enable pin
268 */
269 r = gpio_request(LCD_PANEL_PWR, "lcd_panel_pwr");
270 if (r) {
271 printk(KERN_ERR "failed to get lcd_panel_pwr\n");
272 goto err_2;
273 }
274 gpio_direction_output(LCD_PANEL_PWR, 1);
275
276 printk(KERN_INFO "Display initialized successfully\n");
277 return;
278
279 err_2:
280 gpio_free(LCD_PANEL_PWM);
281 err_1:
282 gpio_free(LCD_PANEL_BKLIGHT_PWR);
283 }
284 #else
285 static void __init am3517_evm_display_init(void) {}
286 #endif
287
288 static int am3517_evm_panel_enable_lcd(struct omap_dss_device *dssdev)
289 {
290 if (dvi_enabled) {
291 printk(KERN_ERR "cannot enable LCD, DVI is enabled\n");
292 return -EINVAL;
293 }
294 gpio_set_value(LCD_PANEL_PWR, 1);
295 lcd_enabled = 1;
296
297 return 0;
298 }
299
300 static void am3517_evm_panel_disable_lcd(struct omap_dss_device *dssdev)
301 {
302 gpio_set_value(LCD_PANEL_PWR, 0);
303 lcd_enabled = 0;
304 }
305
306 static struct omap_dss_device am3517_evm_lcd_device = {
307 .type = OMAP_DISPLAY_TYPE_DPI,
308 .name = "lcd",
309 .driver_name = "sharp_lq_panel",
310 .phy.dpi.data_lines = 16,
311 .platform_enable = am3517_evm_panel_enable_lcd,
312 .platform_disable = am3517_evm_panel_disable_lcd,
313 };
314
315 static int am3517_evm_panel_enable_tv(struct omap_dss_device *dssdev)
316 {
317 return 0;
318 }
319
320 static void am3517_evm_panel_disable_tv(struct omap_dss_device *dssdev)
321 {
322 }
323
324 static struct omap_dss_device am3517_evm_tv_device = {
325 .type = OMAP_DISPLAY_TYPE_VENC,
326 .name = "tv",
327 .driver_name = "venc",
328 .phy.venc.type = OMAP_DSS_VENC_TYPE_SVIDEO,
329 .platform_enable = am3517_evm_panel_enable_tv,
330 .platform_disable = am3517_evm_panel_disable_tv,
331 };
332
333 static int am3517_evm_panel_enable_dvi(struct omap_dss_device *dssdev)
334 {
335 if (lcd_enabled) {
336 printk(KERN_ERR "cannot enable DVI, LCD is enabled\n");
337 return -EINVAL;
338 }
339 dvi_enabled = 1;
340
341 return 0;
342 }
343
344 static void am3517_evm_panel_disable_dvi(struct omap_dss_device *dssdev)
345 {
346 dvi_enabled = 0;
347 }
348
349 static struct omap_dss_device am3517_evm_dvi_device = {
350 .type = OMAP_DISPLAY_TYPE_DPI,
351 .name = "dvi",
352 .driver_name = "generic_panel",
353 .phy.dpi.data_lines = 24,
354 .platform_enable = am3517_evm_panel_enable_dvi,
355 .platform_disable = am3517_evm_panel_disable_dvi,
356 };
357
358 static struct omap_dss_device *am3517_evm_dss_devices[] = {
359 &am3517_evm_lcd_device,
360 &am3517_evm_tv_device,
361 &am3517_evm_dvi_device,
362 };
363
364 static struct omap_dss_board_info am3517_evm_dss_data = {
365 .num_devices = ARRAY_SIZE(am3517_evm_dss_devices),
366 .devices = am3517_evm_dss_devices,
367 .default_device = &am3517_evm_lcd_device,
368 };
369
370 static struct platform_device am3517_evm_dss_device = {
371 .name = "omapdss",
372 .id = -1,
373 .dev = {
374 .platform_data = &am3517_evm_dss_data,
375 },
376 };
377
378 /*
379 * Board initialization
380 */
381 static struct omap_board_config_kernel am3517_evm_config[] __initdata = {
382 };
383
384 static struct platform_device *am3517_evm_devices[] __initdata = {
385 &am3517_evm_dss_device,
386 };
387
388 static void __init am3517_evm_init_irq(void)
389 {
390 omap_board_config = am3517_evm_config;
391 omap_board_config_size = ARRAY_SIZE(am3517_evm_config);
392
393 omap2_init_common_hw(NULL, NULL);
394 omap_init_irq();
395 omap_gpio_init();
396 }
397
398 static struct omap_musb_board_data musb_board_data = {
399 .interface_type = MUSB_INTERFACE_ULPI,
400 .mode = MUSB_OTG,
401 .power = 500,
402 };
403
404 static __init void am3517_evm_musb_init(void)
405 {
406 u32 devconf2;
407
408 /*
409 * Set up USB clock/mode in the DEVCONF2 register.
410 */
411 devconf2 = omap_ctrl_readl(AM35XX_CONTROL_DEVCONF2);
412
413 /* USB2.0 PHY reference clock is 13 MHz */
414 devconf2 &= ~(CONF2_REFFREQ | CONF2_OTGMODE | CONF2_PHY_GPIOMODE);
415 devconf2 |= CONF2_REFFREQ_13MHZ | CONF2_SESENDEN | CONF2_VBDTCTEN
416 | CONF2_DATPOL;
417
418 omap_ctrl_writel(devconf2, AM35XX_CONTROL_DEVCONF2);
419
420 usb_musb_init(&musb_board_data);
421 }
422
423 static const struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
424 .port_mode[0] = EHCI_HCD_OMAP_MODE_PHY,
425 #if defined(CONFIG_PANEL_SHARP_LQ043T1DG01) || \
426 defined(CONFIG_PANEL_SHARP_LQ043T1DG01_MODULE)
427 .port_mode[1] = EHCI_HCD_OMAP_MODE_UNKNOWN,
428 #else
429 .port_mode[1] = EHCI_HCD_OMAP_MODE_PHY,
430 #endif
431 .port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,
432
433 .phy_reset = true,
434 .reset_gpio_port[0] = 57,
435 .reset_gpio_port[1] = -EINVAL,
436 .reset_gpio_port[2] = -EINVAL
437 };
438
439 #ifdef CONFIG_OMAP_MUX
440 static struct omap_board_mux board_mux[] __initdata = {
441 /* USB OTG DRVVBUS offset = 0x212 */
442 OMAP3_MUX(SAD2D_MCAD23, OMAP_MUX_MODE0 | OMAP_PIN_INPUT_PULLDOWN),
443 { .reg_offset = OMAP_MUX_TERMINATOR },
444 };
445 #else
446 #define board_mux NULL
447 #endif
448
449
450 static struct resource am3517_hecc_resources[] = {
451 {
452 .start = AM35XX_IPSS_HECC_BASE,
453 .end = AM35XX_IPSS_HECC_BASE + 0x3FFF,
454 .flags = IORESOURCE_MEM,
455 },
456 {
457 .start = INT_35XX_HECC0_IRQ,
458 .end = INT_35XX_HECC0_IRQ,
459 .flags = IORESOURCE_IRQ,
460 },
461 };
462
463 static struct platform_device am3517_hecc_device = {
464 .name = "ti_hecc",
465 .id = -1,
466 .num_resources = ARRAY_SIZE(am3517_hecc_resources),
467 .resource = am3517_hecc_resources,
468 };
469
470 static struct ti_hecc_platform_data am3517_evm_hecc_pdata = {
471 .scc_hecc_offset = AM35XX_HECC_SCC_HECC_OFFSET,
472 .scc_ram_offset = AM35XX_HECC_SCC_RAM_OFFSET,
473 .hecc_ram_offset = AM35XX_HECC_RAM_OFFSET,
474 .mbx_offset = AM35XX_HECC_MBOX_OFFSET,
475 .int_line = AM35XX_HECC_INT_LINE,
476 .version = AM35XX_HECC_VERSION,
477 };
478
479 static void am3517_evm_hecc_init(struct ti_hecc_platform_data *pdata)
480 {
481 am3517_hecc_device.dev.platform_data = pdata;
482 platform_device_register(&am3517_hecc_device);
483 }
484
485 static void __init am3517_evm_init(void)
486 {
487 omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
488
489 am3517_evm_i2c_init();
490 platform_add_devices(am3517_evm_devices,
491 ARRAY_SIZE(am3517_evm_devices));
492
493 omap_serial_init();
494
495 /* Configure GPIO for EHCI port */
496 omap_mux_init_gpio(57, OMAP_PIN_OUTPUT);
497 usb_ehci_init(&ehci_pdata);
498 am3517_evm_hecc_init(&am3517_evm_hecc_pdata);
499 /* DSS */
500 am3517_evm_display_init();
501
502 /* RTC - S35390A */
503 am3517_evm_rtc_init();
504
505 i2c_register_board_info(1, am3517evm_i2c1_boardinfo,
506 ARRAY_SIZE(am3517evm_i2c1_boardinfo));
507 /*Ethernet*/
508 am3517_evm_ethernet_init(&am3517_evm_emac_pdata);
509
510 /* MUSB */
511 am3517_evm_musb_init();
512 }
513
514 MACHINE_START(OMAP3517EVM, "OMAP3517/AM3517 EVM")
515 .boot_params = 0x80000100,
516 .map_io = omap3_map_io,
517 .reserve = omap_reserve,
518 .init_irq = am3517_evm_init_irq,
519 .init_machine = am3517_evm_init,
520 .timer = &omap_timer,
521 MACHINE_END
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