1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 *  linux/arch/arm/mach-mmp/gplugd.c
4 *
5 *  Support for the Marvell PXA168-based GuruPlug Display (gplugD) Platform.
6 */
7
8#include <linux/init.h>
9#include <linux/platform_device.h>
10#include <linux/gpio.h>
11#include <linux/gpio-pxa.h>
12
13#include <asm/mach/arch.h>
14#include <asm/mach-types.h>
15
16#include "irqs.h"
17#include "pxa168.h"
18#include "mfp-pxa168.h"
19
20#include "common.h"
21
22static unsigned long gplugd_pin_config[] __initdata = {
23	/* UART3 */
24	GPIO8_UART3_TXD,
25	GPIO9_UART3_RXD,
26	GPIO1O_UART3_CTS,
27	GPIO11_UART3_RTS,
28
29	/* USB OTG PEN */
30	GPIO18_GPIO,
31
32	/* MMC2 */
33	GPIO28_MMC2_CMD,
34	GPIO29_MMC2_CLK,
35	GPIO30_MMC2_DAT0,
36	GPIO31_MMC2_DAT1,
37	GPIO32_MMC2_DAT2,
38	GPIO33_MMC2_DAT3,
39
40	/* LCD & HDMI clock selection GPIO: 0: 74.176MHz, 1: 74.25 MHz */
41	GPIO35_GPIO,
42	GPIO36_GPIO, /* CEC Interrupt */
43
44	/* MMC1 */
45	GPIO43_MMC1_CLK,
46	GPIO49_MMC1_CMD,
47	GPIO41_MMC1_DAT0,
48	GPIO40_MMC1_DAT1,
49	GPIO52_MMC1_DAT2,
50	GPIO51_MMC1_DAT3,
51	GPIO53_MMC1_CD,
52
53	/* LCD */
54	GPIO56_LCD_FCLK_RD,
55	GPIO57_LCD_LCLK_A0,
56	GPIO58_LCD_PCLK_WR,
57	GPIO59_LCD_DENA_BIAS,
58	GPIO60_LCD_DD0,
59	GPIO61_LCD_DD1,
60	GPIO62_LCD_DD2,
61	GPIO63_LCD_DD3,
62	GPIO64_LCD_DD4,
63	GPIO65_LCD_DD5,
64	GPIO66_LCD_DD6,
65	GPIO67_LCD_DD7,
66	GPIO68_LCD_DD8,
67	GPIO69_LCD_DD9,
68	GPIO70_LCD_DD10,
69	GPIO71_LCD_DD11,
70	GPIO72_LCD_DD12,
71	GPIO73_LCD_DD13,
72	GPIO74_LCD_DD14,
73	GPIO75_LCD_DD15,
74	GPIO76_LCD_DD16,
75	GPIO77_LCD_DD17,
76	GPIO78_LCD_DD18,
77	GPIO79_LCD_DD19,
78	GPIO80_LCD_DD20,
79	GPIO81_LCD_DD21,
80	GPIO82_LCD_DD22,
81	GPIO83_LCD_DD23,
82
83	/* GPIO */
84	GPIO84_GPIO,
85	GPIO85_GPIO,
86
87	/* Fast-Ethernet*/
88	GPIO86_TX_CLK,
89	GPIO87_TX_EN,
90	GPIO88_TX_DQ3,
91	GPIO89_TX_DQ2,
92	GPIO90_TX_DQ1,
93	GPIO91_TX_DQ0,
94	GPIO92_MII_CRS,
95	GPIO93_MII_COL,
96	GPIO94_RX_CLK,
97	GPIO95_RX_ER,
98	GPIO96_RX_DQ3,
99	GPIO97_RX_DQ2,
100	GPIO98_RX_DQ1,
101	GPIO99_RX_DQ0,
102	GPIO100_MII_MDC,
103	GPIO101_MII_MDIO,
104	GPIO103_RX_DV,
105	GPIO104_GPIO,     /* Reset PHY */
106
107	/* RTC interrupt */
108	GPIO102_GPIO,
109
110	/* I2C */
111	GPIO105_CI2C_SDA,
112	GPIO106_CI2C_SCL,
113
114	/* SPI NOR Flash on SSP2 */
115	GPIO107_SSP2_RXD,
116	GPIO108_SSP2_TXD,
117	GPIO110_GPIO,     /* SPI_CSn */
118	GPIO111_SSP2_CLK,
119
120	/* Select JTAG */
121	GPIO109_GPIO,
122
123	/* I2S */
124	GPIO114_I2S_FRM,
125	GPIO115_I2S_BCLK,
126	GPIO116_I2S_TXD
127};
128
129static struct pxa_gpio_platform_data pxa168_gpio_pdata = {
130	.irq_base	= MMP_GPIO_TO_IRQ(0),
131};
132
133static struct i2c_board_info gplugd_i2c_board_info[] = {
134	{
135		.type = "isl1208",
136		.addr = 0x6F,
137	}
138};
139
140/* Bring PHY out of reset by setting GPIO 104 */
141static int gplugd_eth_init(void)
142{
143	if (unlikely(gpio_request(104, "ETH_RESET_N"))) {
144		printk(KERN_ERR "Can't get hold of GPIO 104 to bring Ethernet "
145				"PHY out of reset\n");
146		return -EIO;
147	}
148
149	gpio_direction_output(104, 1);
150	gpio_free(104);
151	return 0;
152}
153
154struct pxa168_eth_platform_data gplugd_eth_platform_data = {
155	.port_number = 0,
156	.phy_addr    = 0,
157	.speed       = 0, /* Autonagotiation */
158	.intf        = PHY_INTERFACE_MODE_RMII,
159	.init        = gplugd_eth_init,
160};
161
162static void __init select_disp_freq(void)
163{
164	/* set GPIO 35 & clear GPIO 85 to set LCD External Clock to 74.25 MHz */
165	if (unlikely(gpio_request(35, "DISP_FREQ_SEL"))) {
166		printk(KERN_ERR "Can't get hold of GPIO 35 to select display "
167				"frequency\n");
168	} else {
169		gpio_direction_output(35, 1);
170		gpio_free(35);
171	}
172
173	if (unlikely(gpio_request(85, "DISP_FREQ_SEL_2"))) {
174		printk(KERN_ERR "Can't get hold of GPIO 85 to select display "
175				"frequency\n");
176	} else {
177		gpio_direction_output(85, 0);
178		gpio_free(85);
179	}
180}
181
182static void __init gplugd_init(void)
183{
184	mfp_config(ARRAY_AND_SIZE(gplugd_pin_config));
185
186	select_disp_freq();
187
188	/* on-chip devices */
189	pxa168_add_uart(3);
190	pxa168_add_ssp(1);
191	pxa168_add_twsi(0, NULL, ARRAY_AND_SIZE(gplugd_i2c_board_info));
192	platform_device_add_data(&pxa168_device_gpio, &pxa168_gpio_pdata,
193				 sizeof(struct pxa_gpio_platform_data));
194	platform_device_register(&pxa168_device_gpio);
195
196	pxa168_add_eth(&gplugd_eth_platform_data);
197}
198
199MACHINE_START(GPLUGD, "PXA168-based GuruPlug Display (gplugD) Platform")
200	.map_io		= mmp_map_io,
201	.nr_irqs	= MMP_NR_IRQS,
202	.init_irq       = pxa168_init_irq,
203	.init_time	= pxa168_timer_init,
204	.init_machine   = gplugd_init,
205	.restart	= pxa168_restart,
206MACHINE_END
207