1/*
2 * Copyright (C) 2009 Valentin Longchamp, EPFL Mobots group
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 * GNU General Public License for more details.
13 */
14
15#include <linux/delay.h>
16#include <linux/gpio.h>
17#include <linux/init.h>
18#include <linux/interrupt.h>
19#include <linux/i2c.h>
20#include <linux/spi/spi.h>
21#include <linux/slab.h>
22#include <linux/platform_device.h>
23#include <linux/types.h>
24
25#include <linux/usb/otg.h>
26
27#include <media/soc_camera.h>
28
29#include "common.h"
30#include "devices-imx31.h"
31#include "ehci.h"
32#include "hardware.h"
33#include "iomux-mx3.h"
34#include "ulpi.h"
35
36static unsigned int marxbot_pins[] = {
37	/* SDHC2 */
38	MX31_PIN_PC_PWRON__SD2_DATA3, MX31_PIN_PC_VS1__SD2_DATA2,
39	MX31_PIN_PC_READY__SD2_DATA1, MX31_PIN_PC_WAIT_B__SD2_DATA0,
40	MX31_PIN_PC_CD2_B__SD2_CLK, MX31_PIN_PC_CD1_B__SD2_CMD,
41	MX31_PIN_ATA_DIOR__GPIO3_28, MX31_PIN_ATA_DIOW__GPIO3_29,
42	/* CSI */
43	MX31_PIN_CSI_D6__CSI_D6, MX31_PIN_CSI_D7__CSI_D7,
44	MX31_PIN_CSI_D8__CSI_D8, MX31_PIN_CSI_D9__CSI_D9,
45	MX31_PIN_CSI_D10__CSI_D10, MX31_PIN_CSI_D11__CSI_D11,
46	MX31_PIN_CSI_D12__CSI_D12, MX31_PIN_CSI_D13__CSI_D13,
47	MX31_PIN_CSI_D14__CSI_D14, MX31_PIN_CSI_D15__CSI_D15,
48	MX31_PIN_CSI_HSYNC__CSI_HSYNC, MX31_PIN_CSI_MCLK__CSI_MCLK,
49	MX31_PIN_CSI_PIXCLK__CSI_PIXCLK, MX31_PIN_CSI_VSYNC__CSI_VSYNC,
50	MX31_PIN_CSI_D4__GPIO3_4, MX31_PIN_CSI_D5__GPIO3_5,
51	MX31_PIN_GPIO3_0__GPIO3_0, MX31_PIN_GPIO3_1__GPIO3_1,
52	MX31_PIN_TXD2__GPIO1_28,
53	/* dsPIC resets */
54	MX31_PIN_STXD5__GPIO1_21, MX31_PIN_SRXD5__GPIO1_22,
55	/*battery detection */
56	MX31_PIN_LCS0__GPIO3_23,
57	/* USB H1 */
58	MX31_PIN_CSPI1_MISO__USBH1_RXDP, MX31_PIN_CSPI1_MOSI__USBH1_RXDM,
59	MX31_PIN_CSPI1_SS0__USBH1_TXDM, MX31_PIN_CSPI1_SS1__USBH1_TXDP,
60	MX31_PIN_CSPI1_SS2__USBH1_RCV, MX31_PIN_CSPI1_SCLK__USBH1_OEB,
61	MX31_PIN_CSPI1_SPI_RDY__USBH1_FS, MX31_PIN_SFS6__USBH1_SUSPEND,
62	MX31_PIN_NFRE_B__GPIO1_11, MX31_PIN_NFALE__GPIO1_12,
63	/* SEL */
64	MX31_PIN_DTR_DCE1__GPIO2_8, MX31_PIN_DSR_DCE1__GPIO2_9,
65	MX31_PIN_RI_DCE1__GPIO2_10, MX31_PIN_DCD_DCE1__GPIO2_11,
66};
67
68#define SDHC2_CD IOMUX_TO_GPIO(MX31_PIN_ATA_DIOR)
69#define SDHC2_WP IOMUX_TO_GPIO(MX31_PIN_ATA_DIOW)
70
71static int marxbot_sdhc2_get_ro(struct device *dev)
72{
73	return !gpio_get_value(SDHC2_WP);
74}
75
76static int marxbot_sdhc2_init(struct device *dev, irq_handler_t detect_irq,
77		void *data)
78{
79	int ret;
80
81	ret = gpio_request(SDHC2_CD, "sdhc-detect");
82	if (ret)
83		return ret;
84
85	gpio_direction_input(SDHC2_CD);
86
87	ret = gpio_request(SDHC2_WP, "sdhc-wp");
88	if (ret)
89		goto err_gpio_free;
90	gpio_direction_input(SDHC2_WP);
91
92	ret = request_irq(gpio_to_irq(SDHC2_CD), detect_irq,
93		IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
94		"sdhc2-card-detect", data);
95	if (ret)
96		goto err_gpio_free_2;
97
98	return 0;
99
100err_gpio_free_2:
101	gpio_free(SDHC2_WP);
102err_gpio_free:
103	gpio_free(SDHC2_CD);
104
105	return ret;
106}
107
108static void marxbot_sdhc2_exit(struct device *dev, void *data)
109{
110	free_irq(gpio_to_irq(SDHC2_CD), data);
111	gpio_free(SDHC2_WP);
112	gpio_free(SDHC2_CD);
113}
114
115static const struct imxmmc_platform_data sdhc2_pdata __initconst = {
116	.get_ro	= marxbot_sdhc2_get_ro,
117	.init	= marxbot_sdhc2_init,
118	.exit	= marxbot_sdhc2_exit,
119};
120
121#define TRSLAT_RST_B	IOMUX_TO_GPIO(MX31_PIN_STXD5)
122#define DSPICS_RST_B	IOMUX_TO_GPIO(MX31_PIN_SRXD5)
123
124static void dspics_resets_init(void)
125{
126	if (!gpio_request(TRSLAT_RST_B, "translator-rst")) {
127		gpio_direction_output(TRSLAT_RST_B, 0);
128		gpio_export(TRSLAT_RST_B, false);
129	}
130
131	if (!gpio_request(DSPICS_RST_B, "dspics-rst")) {
132		gpio_direction_output(DSPICS_RST_B, 0);
133		gpio_export(DSPICS_RST_B, false);
134	}
135}
136
137static struct spi_board_info marxbot_spi_board_info[] __initdata = {
138	{
139		.modalias = "spidev",
140		.max_speed_hz = 300000,
141		.bus_num = 1,
142		.chip_select = 1, /* according spi1_cs[] ! */
143	},
144};
145
146#define TURRETCAM_POWER	IOMUX_TO_GPIO(MX31_PIN_GPIO3_1)
147#define BASECAM_POWER	IOMUX_TO_GPIO(MX31_PIN_CSI_D5)
148#define TURRETCAM_RST_B	IOMUX_TO_GPIO(MX31_PIN_GPIO3_0)
149#define BASECAM_RST_B	IOMUX_TO_GPIO(MX31_PIN_CSI_D4)
150#define CAM_CHOICE	IOMUX_TO_GPIO(MX31_PIN_TXD2)
151
152static int marxbot_basecam_power(struct device *dev, int on)
153{
154	gpio_set_value(BASECAM_POWER, !on);
155	return 0;
156}
157
158static int marxbot_basecam_reset(struct device *dev)
159{
160	gpio_set_value(BASECAM_RST_B, 0);
161	udelay(100);
162	gpio_set_value(BASECAM_RST_B, 1);
163	return 0;
164}
165
166static struct i2c_board_info marxbot_i2c_devices[] = {
167	{
168		I2C_BOARD_INFO("mt9t031", 0x5d),
169	},
170};
171
172static struct soc_camera_link base_iclink = {
173	.bus_id		= 0,		/* Must match with the camera ID */
174	.power		= marxbot_basecam_power,
175	.reset		= marxbot_basecam_reset,
176	.board_info	= &marxbot_i2c_devices[0],
177	.i2c_adapter_id	= 0,
178};
179
180static struct platform_device marxbot_camera[] = {
181	{
182		.name	= "soc-camera-pdrv",
183		.id	= 0,
184		.dev	= {
185			.platform_data = &base_iclink,
186		},
187	},
188};
189
190static struct platform_device *marxbot_cameras[] __initdata = {
191	&marxbot_camera[0],
192};
193
194static int __init marxbot_cam_init(void)
195{
196	int ret = gpio_request(CAM_CHOICE, "cam-choice");
197	if (ret)
198		return ret;
199	gpio_direction_output(CAM_CHOICE, 0);
200
201	ret = gpio_request(BASECAM_RST_B, "basecam-reset");
202	if (ret)
203		return ret;
204	gpio_direction_output(BASECAM_RST_B, 1);
205	ret = gpio_request(BASECAM_POWER, "basecam-standby");
206	if (ret)
207		return ret;
208	gpio_direction_output(BASECAM_POWER, 0);
209
210	ret = gpio_request(TURRETCAM_RST_B, "turretcam-reset");
211	if (ret)
212		return ret;
213	gpio_direction_output(TURRETCAM_RST_B, 1);
214	ret = gpio_request(TURRETCAM_POWER, "turretcam-standby");
215	if (ret)
216		return ret;
217	gpio_direction_output(TURRETCAM_POWER, 0);
218
219	return 0;
220}
221
222#define SEL0 IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1)
223#define SEL1 IOMUX_TO_GPIO(MX31_PIN_DSR_DCE1)
224#define SEL2 IOMUX_TO_GPIO(MX31_PIN_RI_DCE1)
225#define SEL3 IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1)
226
227static void marxbot_init_sel_gpios(void)
228{
229	if (!gpio_request(SEL0, "sel0")) {
230		gpio_direction_input(SEL0);
231		gpio_export(SEL0, true);
232	}
233
234	if (!gpio_request(SEL1, "sel1")) {
235		gpio_direction_input(SEL1);
236		gpio_export(SEL1, true);
237	}
238
239	if (!gpio_request(SEL2, "sel2")) {
240		gpio_direction_input(SEL2);
241		gpio_export(SEL2, true);
242	}
243
244	if (!gpio_request(SEL3, "sel3")) {
245		gpio_direction_input(SEL3);
246		gpio_export(SEL3, true);
247	}
248}
249
250#define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
251			PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
252
253static int marxbot_usbh1_hw_init(struct platform_device *pdev)
254{
255	mxc_iomux_set_gpr(MUX_PGP_USB_SUSPEND, true);
256
257	mxc_iomux_set_pad(MX31_PIN_CSPI1_MISO, USB_PAD_CFG);
258	mxc_iomux_set_pad(MX31_PIN_CSPI1_MOSI, USB_PAD_CFG);
259	mxc_iomux_set_pad(MX31_PIN_CSPI1_SS0, USB_PAD_CFG);
260	mxc_iomux_set_pad(MX31_PIN_CSPI1_SS1, USB_PAD_CFG);
261	mxc_iomux_set_pad(MX31_PIN_CSPI1_SS2, USB_PAD_CFG);
262	mxc_iomux_set_pad(MX31_PIN_CSPI1_SCLK, USB_PAD_CFG);
263	mxc_iomux_set_pad(MX31_PIN_CSPI1_SPI_RDY, USB_PAD_CFG);
264	mxc_iomux_set_pad(MX31_PIN_SFS6, USB_PAD_CFG);
265
266	mdelay(10);
267
268	return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED |
269			MXC_EHCI_INTERFACE_SINGLE_UNI);
270}
271
272#define USBH1_VBUSEN_B	IOMUX_TO_GPIO(MX31_PIN_NFRE_B)
273#define USBH1_MODE	IOMUX_TO_GPIO(MX31_PIN_NFALE)
274
275static int marxbot_isp1105_init(struct usb_phy *otg)
276{
277	int ret = gpio_request(USBH1_MODE, "usbh1-mode");
278	if (ret)
279		return ret;
280	/* single ended */
281	gpio_direction_output(USBH1_MODE, 0);
282
283	ret = gpio_request(USBH1_VBUSEN_B, "usbh1-vbusen");
284	if (ret) {
285		gpio_free(USBH1_MODE);
286		return ret;
287	}
288	gpio_direction_output(USBH1_VBUSEN_B, 1);
289
290	return 0;
291}
292
293
294static int marxbot_isp1105_set_vbus(struct usb_otg *otg, bool on)
295{
296	if (on)
297		gpio_set_value(USBH1_VBUSEN_B, 0);
298	else
299		gpio_set_value(USBH1_VBUSEN_B, 1);
300
301	return 0;
302}
303
304static struct mxc_usbh_platform_data usbh1_pdata __initdata = {
305	.init	= marxbot_usbh1_hw_init,
306	.portsc	= MXC_EHCI_MODE_UTMI | MXC_EHCI_SERIAL,
307};
308
309static int __init marxbot_usbh1_init(void)
310{
311	struct usb_phy *phy;
312	struct platform_device *pdev;
313
314	phy = kzalloc(sizeof(*phy), GFP_KERNEL);
315	if (!phy)
316		return -ENOMEM;
317
318	phy->otg = kzalloc(sizeof(struct usb_otg), GFP_KERNEL);
319	if (!phy->otg) {
320		kfree(phy);
321		return -ENOMEM;
322	}
323
324	phy->label	= "ISP1105";
325	phy->init	= marxbot_isp1105_init;
326	phy->otg->set_vbus	= marxbot_isp1105_set_vbus;
327
328	usbh1_pdata.otg = phy;
329
330	pdev = imx31_add_mxc_ehci_hs(1, &usbh1_pdata);
331
332	return PTR_ERR_OR_ZERO(pdev);
333}
334
335static const struct fsl_usb2_platform_data usb_pdata __initconst = {
336	.operating_mode	= FSL_USB2_DR_DEVICE,
337	.phy_mode	= FSL_USB2_PHY_ULPI,
338};
339
340/*
341 * system init for baseboard usage. Will be called by mx31moboard init.
342 */
343void __init mx31moboard_marxbot_init(void)
344{
345	printk(KERN_INFO "Initializing mx31marxbot peripherals\n");
346
347	mxc_iomux_setup_multiple_pins(marxbot_pins, ARRAY_SIZE(marxbot_pins),
348		"marxbot");
349
350	marxbot_init_sel_gpios();
351
352	dspics_resets_init();
353
354	imx31_add_mxc_mmc(1, &sdhc2_pdata);
355
356	spi_register_board_info(marxbot_spi_board_info,
357		ARRAY_SIZE(marxbot_spi_board_info));
358
359	marxbot_cam_init();
360	platform_add_devices(marxbot_cameras, ARRAY_SIZE(marxbot_cameras));
361
362	/* battery present pin */
363	gpio_request(IOMUX_TO_GPIO(MX31_PIN_LCS0), "bat-present");
364	gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_LCS0));
365	gpio_export(IOMUX_TO_GPIO(MX31_PIN_LCS0), false);
366
367	imx31_add_fsl_usb2_udc(&usb_pdata);
368
369	marxbot_usbh1_init();
370}
371