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Varadarajan, Charulatha87fe6222010-12-07 16:26:56 -08001/*
2 * OMAP16xx specific gpio init
3 *
4 * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
5 *
6 * Author:
7 * Charulatha V <charu@ti.com>
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation version 2.
12 *
13 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
14 * kind, whether express or implied; without even the implied warranty
15 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 */
18
19#include <linux/gpio.h>
20
21#define OMAP1610_GPIO1_BASE 0xfffbe400
22#define OMAP1610_GPIO2_BASE 0xfffbec00
23#define OMAP1610_GPIO3_BASE 0xfffbb400
24#define OMAP1610_GPIO4_BASE 0xfffbbc00
25#define OMAP1_MPUIO_VBASE OMAP1_MPUIO_BASE
26
Tarun Kanti DebBarmaab985f02011-09-13 15:12:05 +053027/* smart idle, enable wakeup */
28#define SYSCONFIG_WORD 0x14
29
Varadarajan, Charulatha87fe6222010-12-07 16:26:56 -080030/* mpu gpio */
31static struct __initdata resource omap16xx_mpu_gpio_resources[] = {
32 {
33 .start = OMAP1_MPUIO_VBASE,
34 .end = OMAP1_MPUIO_VBASE + SZ_2K - 1,
35 .flags = IORESOURCE_MEM,
36 },
37 {
38 .start = INT_MPUIO,
39 .flags = IORESOURCE_IRQ,
40 },
41};
42
Kevin Hilmanfa87931a2011-04-20 16:31:23 -070043static struct omap_gpio_reg_offs omap16xx_mpuio_regs = {
Kevin Hilmane5ff4442011-04-22 14:37:16 -070044 .revision = USHRT_MAX,
Kevin Hilmanfa87931a2011-04-20 16:31:23 -070045 .direction = OMAP_MPUIO_IO_CNTL,
46 .datain = OMAP_MPUIO_INPUT_LATCH,
47 .dataout = OMAP_MPUIO_OUTPUT,
Kevin Hilmaneef4bec2011-04-21 09:17:35 -070048 .irqstatus = OMAP_MPUIO_GPIO_INT,
Kevin Hilman28f3b5a2011-04-21 09:53:06 -070049 .irqenable = OMAP_MPUIO_GPIO_MASKIT,
50 .irqenable_inv = true,
Tarun Kanti DebBarma5e571f32011-09-13 15:02:14 +053051 .irqctrl = OMAP_MPUIO_GPIO_INT_EDGE,
Kevin Hilmanfa87931a2011-04-20 16:31:23 -070052};
53
Varadarajan, Charulatha87fe6222010-12-07 16:26:56 -080054static struct __initdata omap_gpio_platform_data omap16xx_mpu_gpio_config = {
Charulatha Vd0d665a2011-08-31 00:02:21 +053055 .is_mpuio = true,
Varadarajan, Charulatha87fe6222010-12-07 16:26:56 -080056 .bank_width = 16,
Tony Lindgren5de62b82010-12-07 16:26:58 -080057 .bank_stride = 1,
Kevin Hilmanfa87931a2011-04-20 16:31:23 -070058 .regs = &omap16xx_mpuio_regs,
Varadarajan, Charulatha87fe6222010-12-07 16:26:56 -080059};
60
Janusz Krzysztofik07ad6ab2011-07-04 03:56:15 -070061static struct platform_device omap16xx_mpu_gpio = {
Varadarajan, Charulatha87fe6222010-12-07 16:26:56 -080062 .name = "omap_gpio",
63 .id = 0,
64 .dev = {
65 .platform_data = &omap16xx_mpu_gpio_config,
66 },
67 .num_resources = ARRAY_SIZE(omap16xx_mpu_gpio_resources),
68 .resource = omap16xx_mpu_gpio_resources,
69};
70
71/* gpio1 */
72static struct __initdata resource omap16xx_gpio1_resources[] = {
73 {
74 .start = OMAP1610_GPIO1_BASE,
75 .end = OMAP1610_GPIO1_BASE + SZ_2K - 1,
76 .flags = IORESOURCE_MEM,
77 },
78 {
79 .start = INT_GPIO_BANK1,
80 .flags = IORESOURCE_IRQ,
81 },
82};
83
Kevin Hilmanfa87931a2011-04-20 16:31:23 -070084static struct omap_gpio_reg_offs omap16xx_gpio_regs = {
Kevin Hilmane5ff4442011-04-22 14:37:16 -070085 .revision = OMAP1610_GPIO_REVISION,
Kevin Hilmanfa87931a2011-04-20 16:31:23 -070086 .direction = OMAP1610_GPIO_DIRECTION,
87 .set_dataout = OMAP1610_GPIO_SET_DATAOUT,
88 .clr_dataout = OMAP1610_GPIO_CLEAR_DATAOUT,
89 .datain = OMAP1610_GPIO_DATAIN,
90 .dataout = OMAP1610_GPIO_DATAOUT,
Kevin Hilmaneef4bec2011-04-21 09:17:35 -070091 .irqstatus = OMAP1610_GPIO_IRQSTATUS1,
Kevin Hilman28f3b5a2011-04-21 09:53:06 -070092 .irqenable = OMAP1610_GPIO_IRQENABLE1,
93 .set_irqenable = OMAP1610_GPIO_SET_IRQENABLE1,
94 .clr_irqenable = OMAP1610_GPIO_CLEAR_IRQENABLE1,
Tarun Kanti DebBarma6ed87c52011-09-13 14:41:44 +053095 .wkup_en = OMAP1610_GPIO_WAKEUPENABLE,
Tarun Kanti DebBarma5e571f32011-09-13 15:02:14 +053096 .edgectrl1 = OMAP1610_GPIO_EDGE_CTRL1,
97 .edgectrl2 = OMAP1610_GPIO_EDGE_CTRL2,
Kevin Hilmanfa87931a2011-04-20 16:31:23 -070098};
99
Varadarajan, Charulatha87fe6222010-12-07 16:26:56 -0800100static struct __initdata omap_gpio_platform_data omap16xx_gpio1_config = {
Varadarajan, Charulatha87fe6222010-12-07 16:26:56 -0800101 .bank_width = 16,
Kevin Hilmanfa87931a2011-04-20 16:31:23 -0700102 .regs = &omap16xx_gpio_regs,
Varadarajan, Charulatha87fe6222010-12-07 16:26:56 -0800103};
104
Janusz Krzysztofik07ad6ab2011-07-04 03:56:15 -0700105static struct platform_device omap16xx_gpio1 = {
Varadarajan, Charulatha87fe6222010-12-07 16:26:56 -0800106 .name = "omap_gpio",
107 .id = 1,
108 .dev = {
109 .platform_data = &omap16xx_gpio1_config,
110 },
111 .num_resources = ARRAY_SIZE(omap16xx_gpio1_resources),
112 .resource = omap16xx_gpio1_resources,
113};
114
115/* gpio2 */
116static struct __initdata resource omap16xx_gpio2_resources[] = {
117 {
118 .start = OMAP1610_GPIO2_BASE,
119 .end = OMAP1610_GPIO2_BASE + SZ_2K - 1,
120 .flags = IORESOURCE_MEM,
121 },
122 {
123 .start = INT_1610_GPIO_BANK2,
124 .flags = IORESOURCE_IRQ,
125 },
126};
127
128static struct __initdata omap_gpio_platform_data omap16xx_gpio2_config = {
Varadarajan, Charulatha87fe6222010-12-07 16:26:56 -0800129 .bank_width = 16,
Kevin Hilmanfa87931a2011-04-20 16:31:23 -0700130 .regs = &omap16xx_gpio_regs,
Varadarajan, Charulatha87fe6222010-12-07 16:26:56 -0800131};
132
Janusz Krzysztofik07ad6ab2011-07-04 03:56:15 -0700133static struct platform_device omap16xx_gpio2 = {
Varadarajan, Charulatha87fe6222010-12-07 16:26:56 -0800134 .name = "omap_gpio",
135 .id = 2,
136 .dev = {
137 .platform_data = &omap16xx_gpio2_config,
138 },
139 .num_resources = ARRAY_SIZE(omap16xx_gpio2_resources),
140 .resource = omap16xx_gpio2_resources,
141};
142
143/* gpio3 */
144static struct __initdata resource omap16xx_gpio3_resources[] = {
145 {
146 .start = OMAP1610_GPIO3_BASE,
147 .end = OMAP1610_GPIO3_BASE + SZ_2K - 1,
148 .flags = IORESOURCE_MEM,
149 },
150 {
151 .start = INT_1610_GPIO_BANK3,
152 .flags = IORESOURCE_IRQ,
153 },
154};
155
156static struct __initdata omap_gpio_platform_data omap16xx_gpio3_config = {
Varadarajan, Charulatha87fe6222010-12-07 16:26:56 -0800157 .bank_width = 16,
Kevin Hilmanfa87931a2011-04-20 16:31:23 -0700158 .regs = &omap16xx_gpio_regs,
Varadarajan, Charulatha87fe6222010-12-07 16:26:56 -0800159};
160
Janusz Krzysztofik07ad6ab2011-07-04 03:56:15 -0700161static struct platform_device omap16xx_gpio3 = {
Varadarajan, Charulatha87fe6222010-12-07 16:26:56 -0800162 .name = "omap_gpio",
163 .id = 3,
164 .dev = {
165 .platform_data = &omap16xx_gpio3_config,
166 },
167 .num_resources = ARRAY_SIZE(omap16xx_gpio3_resources),
168 .resource = omap16xx_gpio3_resources,
169};
170
171/* gpio4 */
172static struct __initdata resource omap16xx_gpio4_resources[] = {
173 {
174 .start = OMAP1610_GPIO4_BASE,
175 .end = OMAP1610_GPIO4_BASE + SZ_2K - 1,
176 .flags = IORESOURCE_MEM,
177 },
178 {
179 .start = INT_1610_GPIO_BANK4,
180 .flags = IORESOURCE_IRQ,
181 },
182};
183
184static struct __initdata omap_gpio_platform_data omap16xx_gpio4_config = {
Varadarajan, Charulatha87fe6222010-12-07 16:26:56 -0800185 .bank_width = 16,
Kevin Hilmanfa87931a2011-04-20 16:31:23 -0700186 .regs = &omap16xx_gpio_regs,
Varadarajan, Charulatha87fe6222010-12-07 16:26:56 -0800187};
188
Janusz Krzysztofik07ad6ab2011-07-04 03:56:15 -0700189static struct platform_device omap16xx_gpio4 = {
Varadarajan, Charulatha87fe6222010-12-07 16:26:56 -0800190 .name = "omap_gpio",
191 .id = 4,
192 .dev = {
193 .platform_data = &omap16xx_gpio4_config,
194 },
195 .num_resources = ARRAY_SIZE(omap16xx_gpio4_resources),
196 .resource = omap16xx_gpio4_resources,
197};
198
199static struct __initdata platform_device * omap16xx_gpio_dev[] = {
200 &omap16xx_mpu_gpio,
201 &omap16xx_gpio1,
202 &omap16xx_gpio2,
203 &omap16xx_gpio3,
204 &omap16xx_gpio4,
205};
206
207/*
208 * omap16xx_gpio_init needs to be done before
209 * machine_init functions access gpio APIs.
210 * Hence omap16xx_gpio_init is a postcore_initcall.
211 */
212static int __init omap16xx_gpio_init(void)
213{
214 int i;
Tarun Kanti DebBarmaab985f02011-09-13 15:12:05 +0530215 void __iomem *base;
216 struct resource *res;
217 struct platform_device *pdev;
218 struct omap_gpio_platform_data *pdata;
Varadarajan, Charulatha87fe6222010-12-07 16:26:56 -0800219
220 if (!cpu_is_omap16xx())
221 return -EINVAL;
222
Tony Lindgren63325ff2012-02-24 10:34:33 -0800223 /*
224 * Enable system clock for GPIO module.
225 * The CAM_CLK_CTRL *is* really the right place.
226 */
227 omap_writel(omap_readl(ULPD_CAM_CLK_CTRL) | 0x04,
228 ULPD_CAM_CLK_CTRL);
229
Tarun Kanti DebBarmaab985f02011-09-13 15:12:05 +0530230 for (i = 0; i < ARRAY_SIZE(omap16xx_gpio_dev); i++) {
231 pdev = omap16xx_gpio_dev[i];
232 pdata = pdev->dev.platform_data;
Varadarajan, Charulatha87fe6222010-12-07 16:26:56 -0800233
Tarun Kanti DebBarmaab985f02011-09-13 15:12:05 +0530234 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
235 if (unlikely(!res)) {
236 dev_err(&pdev->dev, "Invalid mem resource.\n");
237 return -ENODEV;
238 }
239
240 base = ioremap(res->start, resource_size(res));
241 if (unlikely(!base)) {
242 dev_err(&pdev->dev, "ioremap failed.\n");
243 return -ENOMEM;
244 }
245
246 __raw_writel(SYSCONFIG_WORD, base + OMAP1610_GPIO_SYSCONFIG);
247 iounmap(base);
248
Varadarajan, Charulatha87fe6222010-12-07 16:26:56 -0800249 platform_device_register(omap16xx_gpio_dev[i]);
Tarun Kanti DebBarmaab985f02011-09-13 15:12:05 +0530250 }
Varadarajan, Charulatha87fe6222010-12-07 16:26:56 -0800251
252 return 0;
253}
254postcore_initcall(omap16xx_gpio_init);