1/*
2 * Copyright 2009 Freescale Semiconductor, Inc. All Rights Reserved.
3 *
4 * Author: Fabio Estevam <fabio.estevam@freescale.com>
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 as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 * GNU General Public License for more details.
15 */
16
17/*
18 * This machine is known as:
19 *  - i.MX27 3-Stack Development System
20 *  - i.MX27 Platform Development Kit (i.MX27 PDK)
21 */
22
23#include <linux/platform_device.h>
24#include <linux/gpio.h>
25#include <linux/irq.h>
26#include <linux/usb/otg.h>
27#include <linux/usb/ulpi.h>
28#include <linux/delay.h>
29#include <linux/mfd/mc13783.h>
30#include <linux/spi/spi.h>
31#include <linux/regulator/machine.h>
32#include <linux/spi/l4f00242t03.h>
33
34#include <media/soc_camera.h>
35
36#include <asm/mach-types.h>
37#include <asm/mach/arch.h>
38#include <asm/mach/time.h>
39
40#include "3ds_debugboard.h"
41#include "common.h"
42#include "devices-imx27.h"
43#include "ehci.h"
44#include "hardware.h"
45#include "iomux-mx27.h"
46#include "ulpi.h"
47
48#define SD1_EN_GPIO		IMX_GPIO_NR(2, 25)
49#define OTG_PHY_RESET_GPIO	IMX_GPIO_NR(2, 23)
50#define SPI2_SS0		IMX_GPIO_NR(4, 21)
51#define PMIC_INT		IMX_GPIO_NR(3, 14)
52#define SPI1_SS0		IMX_GPIO_NR(4, 28)
53#define SD1_CD			IMX_GPIO_NR(2, 26)
54#define LCD_RESET		IMX_GPIO_NR(1, 3)
55#define LCD_ENABLE		IMX_GPIO_NR(1, 31)
56#define CSI_PWRDWN		IMX_GPIO_NR(4, 19)
57#define CSI_RESET		IMX_GPIO_NR(3, 6)
58
59static const int mx27pdk_pins[] __initconst = {
60	/* UART1 */
61	PE12_PF_UART1_TXD,
62	PE13_PF_UART1_RXD,
63	PE14_PF_UART1_CTS,
64	PE15_PF_UART1_RTS,
65	/* FEC */
66	PD0_AIN_FEC_TXD0,
67	PD1_AIN_FEC_TXD1,
68	PD2_AIN_FEC_TXD2,
69	PD3_AIN_FEC_TXD3,
70	PD4_AOUT_FEC_RX_ER,
71	PD5_AOUT_FEC_RXD1,
72	PD6_AOUT_FEC_RXD2,
73	PD7_AOUT_FEC_RXD3,
74	PD8_AF_FEC_MDIO,
75	PD9_AIN_FEC_MDC,
76	PD10_AOUT_FEC_CRS,
77	PD11_AOUT_FEC_TX_CLK,
78	PD12_AOUT_FEC_RXD0,
79	PD13_AOUT_FEC_RX_DV,
80	PD14_AOUT_FEC_RX_CLK,
81	PD15_AOUT_FEC_COL,
82	PD16_AIN_FEC_TX_ER,
83	PF23_AIN_FEC_TX_EN,
84	/* SDHC1 */
85	PE18_PF_SD1_D0,
86	PE19_PF_SD1_D1,
87	PE20_PF_SD1_D2,
88	PE21_PF_SD1_D3,
89	PE22_PF_SD1_CMD,
90	PE23_PF_SD1_CLK,
91	SD1_EN_GPIO | GPIO_GPIO | GPIO_OUT,
92	/* OTG */
93	OTG_PHY_RESET_GPIO | GPIO_GPIO | GPIO_OUT,
94	PC7_PF_USBOTG_DATA5,
95	PC8_PF_USBOTG_DATA6,
96	PC9_PF_USBOTG_DATA0,
97	PC10_PF_USBOTG_DATA2,
98	PC11_PF_USBOTG_DATA1,
99	PC12_PF_USBOTG_DATA4,
100	PC13_PF_USBOTG_DATA3,
101	PE0_PF_USBOTG_NXT,
102	PE1_PF_USBOTG_STP,
103	PE2_PF_USBOTG_DIR,
104	PE24_PF_USBOTG_CLK,
105	PE25_PF_USBOTG_DATA7,
106	/* CSPI1 */
107	PD31_PF_CSPI1_MOSI,
108	PD30_PF_CSPI1_MISO,
109	PD29_PF_CSPI1_SCLK,
110	PD25_PF_CSPI1_RDY,
111	SPI1_SS0 | GPIO_GPIO | GPIO_OUT,
112	/* CSPI2 */
113	PD22_PF_CSPI2_SCLK,
114	PD23_PF_CSPI2_MISO,
115	PD24_PF_CSPI2_MOSI,
116	SPI2_SS0 | GPIO_GPIO | GPIO_OUT,
117	/* I2C1 */
118	PD17_PF_I2C_DATA,
119	PD18_PF_I2C_CLK,
120	/* PMIC INT */
121	PMIC_INT | GPIO_GPIO | GPIO_IN,
122	/* LCD */
123	PA5_PF_LSCLK,
124	PA6_PF_LD0,
125	PA7_PF_LD1,
126	PA8_PF_LD2,
127	PA9_PF_LD3,
128	PA10_PF_LD4,
129	PA11_PF_LD5,
130	PA12_PF_LD6,
131	PA13_PF_LD7,
132	PA14_PF_LD8,
133	PA15_PF_LD9,
134	PA16_PF_LD10,
135	PA17_PF_LD11,
136	PA18_PF_LD12,
137	PA19_PF_LD13,
138	PA20_PF_LD14,
139	PA21_PF_LD15,
140	PA22_PF_LD16,
141	PA23_PF_LD17,
142	PA28_PF_HSYNC,
143	PA29_PF_VSYNC,
144	PA30_PF_CONTRAST,
145	LCD_ENABLE | GPIO_GPIO | GPIO_OUT,
146	LCD_RESET | GPIO_GPIO | GPIO_OUT,
147	/* CSI */
148	PB10_PF_CSI_D0,
149	PB11_PF_CSI_D1,
150	PB12_PF_CSI_D2,
151	PB13_PF_CSI_D3,
152	PB14_PF_CSI_D4,
153	PB15_PF_CSI_MCLK,
154	PB16_PF_CSI_PIXCLK,
155	PB17_PF_CSI_D5,
156	PB18_PF_CSI_D6,
157	PB19_PF_CSI_D7,
158	PB20_PF_CSI_VSYNC,
159	PB21_PF_CSI_HSYNC,
160	CSI_PWRDWN | GPIO_GPIO | GPIO_OUT,
161	CSI_RESET | GPIO_GPIO | GPIO_OUT,
162	/* SSI4 */
163	PC16_PF_SSI4_FS,
164	PC17_PF_SSI4_RXD,
165	PC18_PF_SSI4_TXD,
166	PC19_PF_SSI4_CLK,
167};
168
169static struct gpio mx27_3ds_camera_gpios[] = {
170	{ CSI_PWRDWN, GPIOF_OUT_INIT_HIGH, "camera-power" },
171	{ CSI_RESET, GPIOF_OUT_INIT_HIGH, "camera-reset" },
172};
173
174static const struct imxuart_platform_data uart_pdata __initconst = {
175	.flags = IMXUART_HAVE_RTSCTS,
176};
177
178/*
179 * Matrix keyboard
180 */
181
182static const uint32_t mx27_3ds_keymap[] = {
183	KEY(0, 0, KEY_UP),
184	KEY(0, 1, KEY_DOWN),
185	KEY(1, 0, KEY_RIGHT),
186	KEY(1, 1, KEY_LEFT),
187	KEY(1, 2, KEY_ENTER),
188	KEY(2, 0, KEY_F6),
189	KEY(2, 1, KEY_F8),
190	KEY(2, 2, KEY_F9),
191	KEY(2, 3, KEY_F10),
192};
193
194static const struct matrix_keymap_data mx27_3ds_keymap_data __initconst = {
195	.keymap		= mx27_3ds_keymap,
196	.keymap_size	= ARRAY_SIZE(mx27_3ds_keymap),
197};
198
199static int mx27_3ds_sdhc1_init(struct device *dev, irq_handler_t detect_irq,
200				void *data)
201{
202	return request_irq(gpio_to_irq(SD1_CD), detect_irq,
203	IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING, "sdhc1-card-detect", data);
204}
205
206static void mx27_3ds_sdhc1_exit(struct device *dev, void *data)
207{
208	free_irq(gpio_to_irq(SD1_CD), data);
209}
210
211static const struct imxmmc_platform_data sdhc1_pdata __initconst = {
212	.init = mx27_3ds_sdhc1_init,
213	.exit = mx27_3ds_sdhc1_exit,
214};
215
216static void mx27_3ds_sdhc1_enable_level_translator(void)
217{
218	/* Turn on TXB0108 OE pin */
219	gpio_request(SD1_EN_GPIO, "sd1_enable");
220	gpio_direction_output(SD1_EN_GPIO, 1);
221}
222
223
224static int otg_phy_init(void)
225{
226	gpio_request(OTG_PHY_RESET_GPIO, "usb-otg-reset");
227	gpio_direction_output(OTG_PHY_RESET_GPIO, 0);
228	mdelay(1);
229	gpio_set_value(OTG_PHY_RESET_GPIO, 1);
230	return 0;
231}
232
233static int mx27_3ds_otg_init(struct platform_device *pdev)
234{
235	return mx27_initialize_usb_hw(pdev->id, MXC_EHCI_INTERFACE_DIFF_UNI);
236}
237
238static struct mxc_usbh_platform_data otg_pdata __initdata = {
239	.init	= mx27_3ds_otg_init,
240	.portsc	= MXC_EHCI_MODE_ULPI,
241};
242
243static const struct fsl_usb2_platform_data otg_device_pdata __initconst = {
244	.operating_mode = FSL_USB2_DR_DEVICE,
245	.phy_mode       = FSL_USB2_PHY_ULPI,
246};
247
248static bool otg_mode_host __initdata;
249
250static int __init mx27_3ds_otg_mode(char *options)
251{
252	if (!strcmp(options, "host"))
253		otg_mode_host = true;
254	else if (!strcmp(options, "device"))
255		otg_mode_host = false;
256	else
257		pr_info("otg_mode neither \"host\" nor \"device\". "
258			"Defaulting to device\n");
259	return 1;
260}
261__setup("otg_mode=", mx27_3ds_otg_mode);
262
263/* Regulators */
264static struct regulator_init_data gpo_init = {
265	.constraints = {
266		.boot_on = 1,
267		.always_on = 1,
268	}
269};
270
271static struct regulator_consumer_supply vmmc1_consumers[] = {
272	REGULATOR_SUPPLY("vcore", "spi0.0"),
273	REGULATOR_SUPPLY("cmos_2v8", "soc-camera-pdrv.0"),
274};
275
276static struct regulator_init_data vmmc1_init = {
277	.constraints = {
278		.min_uV	= 2800000,
279		.max_uV = 2800000,
280		.apply_uV = 1,
281		.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
282				  REGULATOR_CHANGE_STATUS,
283	},
284	.num_consumer_supplies = ARRAY_SIZE(vmmc1_consumers),
285	.consumer_supplies = vmmc1_consumers,
286};
287
288static struct regulator_consumer_supply vgen_consumers[] = {
289	REGULATOR_SUPPLY("vdd", "spi0.0"),
290};
291
292static struct regulator_init_data vgen_init = {
293	.constraints = {
294		.min_uV	= 1800000,
295		.max_uV = 1800000,
296		.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
297	},
298	.num_consumer_supplies = ARRAY_SIZE(vgen_consumers),
299	.consumer_supplies = vgen_consumers,
300};
301
302static struct regulator_consumer_supply vvib_consumers[] = {
303	REGULATOR_SUPPLY("cmos_vcore", "soc-camera-pdrv.0"),
304};
305
306static struct regulator_init_data vvib_init = {
307	.constraints = {
308		.min_uV = 1300000,
309		.max_uV = 1300000,
310		.apply_uV = 1,
311		.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
312				  REGULATOR_CHANGE_STATUS,
313	},
314	.num_consumer_supplies = ARRAY_SIZE(vvib_consumers),
315	.consumer_supplies = vvib_consumers,
316};
317
318static struct mc13xxx_regulator_init_data mx27_3ds_regulators[] = {
319	{
320		.id = MC13783_REG_VMMC1,
321		.init_data = &vmmc1_init,
322	}, {
323		.id = MC13783_REG_VGEN,
324		.init_data = &vgen_init,
325	}, {
326		.id = MC13783_REG_GPO1, /* Turn on 1.8V */
327		.init_data = &gpo_init,
328	}, {
329		.id = MC13783_REG_GPO3, /* Turn on 3.3V */
330		.init_data = &gpo_init,
331	}, {
332		.id = MC13783_REG_VVIB,  /* Power OV2640 */
333		.init_data = &vvib_init,
334	},
335};
336
337/* MC13783 */
338static struct mc13xxx_codec_platform_data mx27_3ds_codec = {
339	.dac_ssi_port = MC13783_SSI1_PORT,
340	.adc_ssi_port = MC13783_SSI1_PORT,
341};
342
343static struct mc13xxx_platform_data mc13783_pdata = {
344	.regulators = {
345		.regulators = mx27_3ds_regulators,
346		.num_regulators = ARRAY_SIZE(mx27_3ds_regulators),
347
348	},
349	.flags  = MC13XXX_USE_TOUCHSCREEN | MC13XXX_USE_RTC |
350						MC13XXX_USE_CODEC,
351	.codec = &mx27_3ds_codec,
352};
353
354static struct imx_ssi_platform_data mx27_3ds_ssi_pdata = {
355	.flags = IMX_SSI_DMA | IMX_SSI_NET,
356};
357
358/* SPI */
359static int spi1_chipselect[] = {SPI1_SS0};
360
361static const struct spi_imx_master spi1_pdata __initconst = {
362	.chipselect	= spi1_chipselect,
363	.num_chipselect	= ARRAY_SIZE(spi1_chipselect),
364};
365
366static int spi2_chipselect[] = {SPI2_SS0};
367
368static const struct spi_imx_master spi2_pdata __initconst = {
369	.chipselect	= spi2_chipselect,
370	.num_chipselect	= ARRAY_SIZE(spi2_chipselect),
371};
372
373static int mx27_3ds_camera_power(struct device *dev, int on)
374{
375	/* enable or disable the camera */
376	pr_debug("%s: %s the camera\n", __func__, on ? "ENABLE" : "DISABLE");
377	gpio_set_value(CSI_PWRDWN, on ? 0 : 1);
378
379	if (!on)
380		goto out;
381
382	/* If enabled, give a reset impulse */
383	gpio_set_value(CSI_RESET, 0);
384	msleep(20);
385	gpio_set_value(CSI_RESET, 1);
386	msleep(100);
387
388out:
389	return 0;
390}
391
392static struct i2c_board_info mx27_3ds_i2c_camera = {
393	I2C_BOARD_INFO("ov2640", 0x30),
394};
395
396static struct regulator_bulk_data mx27_3ds_camera_regs[] = {
397	{ .supply = "cmos_vcore" },
398	{ .supply = "cmos_2v8" },
399};
400
401static struct soc_camera_link iclink_ov2640 = {
402	.bus_id		= 0,
403	.board_info	= &mx27_3ds_i2c_camera,
404	.i2c_adapter_id	= 0,
405	.power		= mx27_3ds_camera_power,
406	.regulators	= mx27_3ds_camera_regs,
407	.num_regulators	= ARRAY_SIZE(mx27_3ds_camera_regs),
408};
409
410static struct platform_device mx27_3ds_ov2640 = {
411	.name	= "soc-camera-pdrv",
412	.id	= 0,
413	.dev	= {
414		.platform_data = &iclink_ov2640,
415	},
416};
417
418static struct imx_fb_videomode mx27_3ds_modes[] = {
419	{	/* 480x640 @ 60 Hz */
420		.mode = {
421			.name		= "Epson-VGA",
422			.refresh	= 60,
423			.xres		= 480,
424			.yres		= 640,
425			.pixclock	= 41701,
426			.left_margin	= 20,
427			.right_margin	= 41,
428			.upper_margin	= 10,
429			.lower_margin	= 5,
430			.hsync_len	= 20,
431			.vsync_len	= 10,
432			.sync		= FB_SYNC_OE_ACT_HIGH |
433						FB_SYNC_CLK_INVERT,
434			.vmode		= FB_VMODE_NONINTERLACED,
435			.flag		= 0,
436		},
437		.bpp		= 16,
438		.pcr		= 0xFAC08B82,
439	},
440};
441
442static const struct imx_fb_platform_data mx27_3ds_fb_data __initconst = {
443	.mode = mx27_3ds_modes,
444	.num_modes = ARRAY_SIZE(mx27_3ds_modes),
445	.pwmr		= 0x00A903FF,
446	.lscr1		= 0x00120300,
447	.dmacr		= 0x00020010,
448};
449
450/* LCD */
451static struct l4f00242t03_pdata mx27_3ds_lcd_pdata = {
452	.reset_gpio		= LCD_RESET,
453	.data_enable_gpio	= LCD_ENABLE,
454};
455
456static struct spi_board_info mx27_3ds_spi_devs[] __initdata = {
457	{
458		.modalias	= "mc13783",
459		.max_speed_hz	= 1000000,
460		.bus_num	= 1,
461		.chip_select	= 0, /* SS0 */
462		.platform_data	= &mc13783_pdata,
463		/* irq number is run-time assigned */
464		.mode = SPI_CS_HIGH,
465	}, {
466		.modalias	= "l4f00242t03",
467		.max_speed_hz	= 5000000,
468		.bus_num	= 0,
469		.chip_select	= 0, /* SS0 */
470		.platform_data	= &mx27_3ds_lcd_pdata,
471	},
472};
473
474static struct platform_device *devices[] __initdata = {
475	&mx27_3ds_ov2640,
476};
477
478static const struct mx2_camera_platform_data mx27_3ds_cam_pdata __initconst = {
479	.clk = 26000000,
480};
481
482static const struct imxi2c_platform_data mx27_3ds_i2c0_data __initconst = {
483	.bitrate = 100000,
484};
485
486static void __init mx27pdk_init(void)
487{
488	int ret;
489	imx27_soc_init();
490
491	mxc_gpio_setup_multiple_pins(mx27pdk_pins, ARRAY_SIZE(mx27pdk_pins),
492		"mx27pdk");
493	mx27_3ds_sdhc1_enable_level_translator();
494	imx27_add_imx_uart0(&uart_pdata);
495	imx27_add_fec(NULL);
496	imx27_add_imx_keypad(&mx27_3ds_keymap_data);
497	imx27_add_mxc_mmc(0, &sdhc1_pdata);
498	imx27_add_imx2_wdt();
499	otg_phy_init();
500
501	if (otg_mode_host) {
502		otg_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
503				ULPI_OTG_DRVVBUS_EXT);
504
505		if (otg_pdata.otg)
506			imx27_add_mxc_ehci_otg(&otg_pdata);
507	}
508
509	if (!otg_mode_host)
510		imx27_add_fsl_usb2_udc(&otg_device_pdata);
511
512	imx27_add_spi_imx1(&spi2_pdata);
513	imx27_add_spi_imx0(&spi1_pdata);
514	mx27_3ds_spi_devs[0].irq = gpio_to_irq(PMIC_INT);
515	spi_register_board_info(mx27_3ds_spi_devs,
516						ARRAY_SIZE(mx27_3ds_spi_devs));
517
518	if (mxc_expio_init(MX27_CS5_BASE_ADDR, IMX_GPIO_NR(3, 28)))
519		pr_warn("Init of the debugboard failed, all devices on the debugboard are unusable.\n");
520	imx27_add_imx_i2c(0, &mx27_3ds_i2c0_data);
521	platform_add_devices(devices, ARRAY_SIZE(devices));
522	imx27_add_imx_fb(&mx27_3ds_fb_data);
523
524	ret = gpio_request_array(mx27_3ds_camera_gpios,
525				 ARRAY_SIZE(mx27_3ds_camera_gpios));
526	if (ret) {
527		pr_err("Failed to request camera gpios");
528		iclink_ov2640.power = NULL;
529	}
530
531	imx27_add_mx2_camera(&mx27_3ds_cam_pdata);
532	imx27_add_imx_ssi(0, &mx27_3ds_ssi_pdata);
533
534	imx_add_platform_device("imx_mc13783", 0, NULL, 0, NULL, 0);
535}
536
537static void __init mx27pdk_timer_init(void)
538{
539	mx27_clocks_init(26000000);
540}
541
542MACHINE_START(MX27_3DS, "Freescale MX27PDK")
543	/* maintainer: Freescale Semiconductor, Inc. */
544	.atag_offset = 0x100,
545	.map_io = mx27_map_io,
546	.init_early = imx27_init_early,
547	.init_irq = mx27_init_irq,
548	.init_time	= mx27pdk_timer_init,
549	.init_machine = mx27pdk_init,
550	.restart	= mxc_restart,
551MACHINE_END
552