xref: /linux/arch/arm/mach-sa1100/collie.c (revision 1d0ad843b08f7655b8ac011bca1e3e0c69a554de) 
1 /*
2  * linux/arch/arm/mach-sa1100/collie.c
3  *
4  * May be copied or modified under the terms of the GNU General Public
5  * License.  See linux/COPYING for more information.
6  *
7  * This file contains all Collie-specific tweaks.
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License version 2 as
11  * published by the Free Software Foundation.
12  *
13  * ChangeLog:
14  *  2006 Pavel Machek <pavel@suse.cz>
15  *  03-06-2004 John Lenz <lenz@cs.wisc.edu>
16  *  06-04-2002 Chris Larson <kergoth@digitalnemesis.net>
17  *  04-16-2001 Lineo Japan,Inc. ...
18  */
19 
20 #include <linux/init.h>
21 #include <linux/kernel.h>
22 #include <linux/tty.h>
23 #include <linux/delay.h>
24 #include <linux/platform_device.h>
25 #include <linux/mtd/mtd.h>
26 #include <linux/mtd/partitions.h>
27 #include <linux/timer.h>
28 #include <linux/gpio.h>
29 
30 #include <mach/hardware.h>
31 #include <asm/mach-types.h>
32 #include <asm/irq.h>
33 #include <asm/setup.h>
34 #include <mach/collie.h>
35 
36 #include <asm/mach/arch.h>
37 #include <asm/mach/flash.h>
38 #include <asm/mach/map.h>
39 #include <asm/mach/serial_sa1100.h>
40 
41 #include <asm/hardware/scoop.h>
42 #include <asm/mach/sharpsl_param.h>
43 #include <asm/hardware/locomo.h>
44 #include <mach/mcp.h>
45 
46 #include "generic.h"
47 
48 static struct resource collie_scoop_resources[] = {
49 	[0] = {
50 		.start		= 0x40800000,
51 		.end		= 0x40800fff,
52 		.flags		= IORESOURCE_MEM,
53 	},
54 };
55 
56 static struct scoop_config collie_scoop_setup = {
57 	.io_dir 	= COLLIE_SCOOP_IO_DIR,
58 	.io_out		= COLLIE_SCOOP_IO_OUT,
59 	.gpio_base	= COLLIE_SCOOP_GPIO_BASE,
60 };
61 
62 struct platform_device colliescoop_device = {
63 	.name		= "sharp-scoop",
64 	.id		= -1,
65 	.dev		= {
66  		.platform_data	= &collie_scoop_setup,
67 	},
68 	.num_resources	= ARRAY_SIZE(collie_scoop_resources),
69 	.resource	= collie_scoop_resources,
70 };
71 
72 static struct scoop_pcmcia_dev collie_pcmcia_scoop[] = {
73 	{
74 	.dev		= &colliescoop_device.dev,
75 	.irq		= COLLIE_IRQ_GPIO_CF_IRQ,
76 	.cd_irq		= COLLIE_IRQ_GPIO_CF_CD,
77 	.cd_irq_str	= "PCMCIA0 CD",
78 	},
79 };
80 
81 static struct scoop_pcmcia_config collie_pcmcia_config = {
82 	.devs		= &collie_pcmcia_scoop[0],
83 	.num_devs	= 1,
84 };
85 
86 static struct mcp_plat_data collie_mcp_data = {
87 	.mccr0		= MCCR0_ADM | MCCR0_ExtClk,
88 	.sclk_rate	= 9216000,
89 };
90 
91 #ifdef CONFIG_SHARP_LOCOMO
92 /*
93  * low-level UART features.
94  */
95 struct platform_device collie_locomo_device;
96 
97 static void collie_uart_set_mctrl(struct uart_port *port, u_int mctrl)
98 {
99 	if (mctrl & TIOCM_RTS)
100 		locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_RTS, 0);
101 	else
102 		locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_RTS, 1);
103 
104 	if (mctrl & TIOCM_DTR)
105 		locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_DTR, 0);
106 	else
107 		locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_DTR, 1);
108 }
109 
110 static u_int collie_uart_get_mctrl(struct uart_port *port)
111 {
112 	int ret = TIOCM_CD;
113 	unsigned int r;
114 
115 	r = locomo_gpio_read_output(&collie_locomo_device.dev, LOCOMO_GPIO_CTS & LOCOMO_GPIO_DSR);
116 	if (r == -ENODEV)
117 		return ret;
118 	if (r & LOCOMO_GPIO_CTS)
119 		ret |= TIOCM_CTS;
120 	if (r & LOCOMO_GPIO_DSR)
121 		ret |= TIOCM_DSR;
122 
123 	return ret;
124 }
125 
126 static struct sa1100_port_fns collie_port_fns __initdata = {
127 	.set_mctrl	= collie_uart_set_mctrl,
128 	.get_mctrl	= collie_uart_get_mctrl,
129 };
130 
131 static int collie_uart_probe(struct locomo_dev *dev)
132 {
133 	return 0;
134 }
135 
136 static int collie_uart_remove(struct locomo_dev *dev)
137 {
138 	return 0;
139 }
140 
141 static struct locomo_driver collie_uart_driver = {
142 	.drv = {
143 		.name = "collie_uart",
144 	},
145 	.devid	= LOCOMO_DEVID_UART,
146 	.probe	= collie_uart_probe,
147 	.remove	= collie_uart_remove,
148 };
149 
150 static int __init collie_uart_init(void)
151 {
152 	return locomo_driver_register(&collie_uart_driver);
153 }
154 device_initcall(collie_uart_init);
155 
156 #endif
157 
158 
159 static struct resource locomo_resources[] = {
160 	[0] = {
161 		.start		= 0x40000000,
162 		.end		= 0x40001fff,
163 		.flags		= IORESOURCE_MEM,
164 	},
165 	[1] = {
166 		.start		= IRQ_GPIO25,
167 		.end		= IRQ_GPIO25,
168 		.flags		= IORESOURCE_IRQ,
169 	},
170 };
171 
172 struct platform_device collie_locomo_device = {
173 	.name		= "locomo",
174 	.id		= 0,
175 	.num_resources	= ARRAY_SIZE(locomo_resources),
176 	.resource	= locomo_resources,
177 };
178 
179 static struct platform_device *devices[] __initdata = {
180 	&collie_locomo_device,
181 	&colliescoop_device,
182 };
183 
184 static struct mtd_partition collie_partitions[] = {
185 	{
186 		.name		= "bootloader",
187 		.offset 	= 0,
188 		.size		= 0x000C0000,
189 		.mask_flags	= MTD_WRITEABLE
190 	}, {
191 		.name		= "kernel",
192 		.offset 	= MTDPART_OFS_APPEND,
193 		.size		= 0x00100000,
194 	}, {
195 		.name		= "rootfs",
196 		.offset 	= MTDPART_OFS_APPEND,
197 		.size		= 0x00e20000,
198 	}
199 };
200 
201 static int collie_flash_init(void)
202 {
203 	int rc = gpio_request(COLLIE_GPIO_VPEN, "flash Vpp enable");
204 	if (rc)
205 		return rc;
206 
207 	rc = gpio_direction_output(COLLIE_GPIO_VPEN, 1);
208 	if (rc)
209 		gpio_free(COLLIE_GPIO_VPEN);
210 
211 	return rc;
212 }
213 
214 static void collie_set_vpp(int vpp)
215 {
216 	gpio_set_value(COLLIE_GPIO_VPEN, vpp);
217 }
218 
219 static void collie_flash_exit(void)
220 {
221 	gpio_free(COLLIE_GPIO_VPEN);
222 }
223 
224 static struct flash_platform_data collie_flash_data = {
225 	.map_name	= "cfi_probe",
226 	.init		= collie_flash_init,
227 	.set_vpp	= collie_set_vpp,
228 	.exit		= collie_flash_exit,
229 	.parts		= collie_partitions,
230 	.nr_parts	= ARRAY_SIZE(collie_partitions),
231 };
232 
233 static struct resource collie_flash_resources[] = {
234 	{
235 		.start	= SA1100_CS0_PHYS,
236 		.end	= SA1100_CS0_PHYS + SZ_32M - 1,
237 		.flags	= IORESOURCE_MEM,
238 	}
239 };
240 
241 static void __init collie_init(void)
242 {
243 	int ret = 0;
244 
245 	/* cpu initialize */
246 	GAFR = GPIO_SSP_TXD | GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SSP_CLK |
247 		GPIO_MCP_CLK | GPIO_32_768kHz;
248 
249 	GPDR = GPIO_LDD8 | GPIO_LDD9 | GPIO_LDD10 | GPIO_LDD11 | GPIO_LDD12 |
250 		GPIO_LDD13 | GPIO_LDD14 | GPIO_LDD15 | GPIO_SSP_TXD |
251 		GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SDLC_SCLK |
252 		_COLLIE_GPIO_UCB1x00_RESET | _COLLIE_GPIO_nMIC_ON |
253 		_COLLIE_GPIO_nREMOCON_ON | GPIO_32_768kHz;
254 
255 	PPDR = PPC_LDD0 | PPC_LDD1 | PPC_LDD2 | PPC_LDD3 | PPC_LDD4 | PPC_LDD5 |
256 		PPC_LDD6 | PPC_LDD7 | PPC_L_PCLK | PPC_L_LCLK | PPC_L_FCLK | PPC_L_BIAS |
257 		PPC_TXD1 | PPC_TXD2 | PPC_TXD3 | PPC_TXD4 | PPC_SCLK | PPC_SFRM;
258 
259 	PWER = _COLLIE_GPIO_AC_IN | _COLLIE_GPIO_CO | _COLLIE_GPIO_ON_KEY |
260 		_COLLIE_GPIO_WAKEUP | _COLLIE_GPIO_nREMOCON_INT | PWER_RTC;
261 
262 	PGSR = _COLLIE_GPIO_nREMOCON_ON;
263 
264 	PSDR = PPC_RXD1 | PPC_RXD2 | PPC_RXD3 | PPC_RXD4;
265 
266 	PCFR = PCFR_OPDE;
267 
268 	GPSR |= _COLLIE_GPIO_UCB1x00_RESET;
269 
270 
271 	platform_scoop_config = &collie_pcmcia_config;
272 
273 	ret = platform_add_devices(devices, ARRAY_SIZE(devices));
274 	if (ret) {
275 		printk(KERN_WARNING "collie: Unable to register LoCoMo device\n");
276 	}
277 
278 	sa11x0_set_flash_data(&collie_flash_data, collie_flash_resources,
279 			      ARRAY_SIZE(collie_flash_resources));
280 	sa11x0_set_mcp_data(&collie_mcp_data);
281 
282 	sharpsl_save_param();
283 }
284 
285 static struct map_desc collie_io_desc[] __initdata = {
286 	{	/* 32M main flash (cs0) */
287 		.virtual	= 0xe8000000,
288 		.pfn		= __phys_to_pfn(0x00000000),
289 		.length		= 0x02000000,
290 		.type		= MT_DEVICE
291 	}, {	/* 32M boot flash (cs1) */
292 		.virtual	= 0xea000000,
293 		.pfn		= __phys_to_pfn(0x08000000),
294 		.length		= 0x02000000,
295 		.type		= MT_DEVICE
296 	}
297 };
298 
299 static void __init collie_map_io(void)
300 {
301 	sa1100_map_io();
302 	iotable_init(collie_io_desc, ARRAY_SIZE(collie_io_desc));
303 
304 #ifdef CONFIG_SHARP_LOCOMO
305 	sa1100_register_uart_fns(&collie_port_fns);
306 #endif
307 	sa1100_register_uart(0, 3);
308 	sa1100_register_uart(1, 1);
309 }
310 
311 MACHINE_START(COLLIE, "Sharp-Collie")
312 	.phys_io	= 0x80000000,
313 	.io_pg_offst	= ((0xf8000000) >> 18) & 0xfffc,
314 	.map_io		= collie_map_io,
315 	.init_irq	= sa1100_init_irq,
316 	.timer		= &sa1100_timer,
317 	.init_machine	= collie_init,
318 MACHINE_END
319