Merge branch 'upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/linville...
[linux-2.6] / arch / arm / mach-sa1100 / collie.c
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
29 #include <asm/hardware.h>
30 #include <asm/mach-types.h>
31 #include <asm/irq.h>
32 #include <asm/setup.h>
33 #include <asm/arch/collie.h>
34
35 #include <asm/mach/arch.h>
36 #include <asm/mach/flash.h>
37 #include <asm/mach/map.h>
38 #include <asm/mach/serial_sa1100.h>
39
40 #include <asm/hardware/scoop.h>
41 #include <asm/mach/sharpsl_param.h>
42 #include <asm/hardware/locomo.h>
43 #include <asm/arch/mcp.h>
44
45 #include "generic.h"
46
47 static struct resource collie_scoop_resources[] = {
48         [0] = {
49                 .start          = 0x40800000,
50                 .end            = 0x40800fff,
51                 .flags          = IORESOURCE_MEM,
52         },
53 };
54
55 static struct scoop_config collie_scoop_setup = {
56         .io_dir         = COLLIE_SCOOP_IO_DIR,
57         .io_out         = COLLIE_SCOOP_IO_OUT,
58 };
59
60 struct platform_device colliescoop_device = {
61         .name           = "sharp-scoop",
62         .id             = -1,
63         .dev            = {
64                 .platform_data  = &collie_scoop_setup,
65         },
66         .num_resources  = ARRAY_SIZE(collie_scoop_resources),
67         .resource       = collie_scoop_resources,
68 };
69
70 static struct scoop_pcmcia_dev collie_pcmcia_scoop[] = {
71 {
72        .dev        = &colliescoop_device.dev,
73        .irq        = COLLIE_IRQ_GPIO_CF_IRQ,
74        .cd_irq     = COLLIE_IRQ_GPIO_CF_CD,
75        .cd_irq_str = "PCMCIA0 CD",
76 },
77 };
78
79 static struct scoop_pcmcia_config collie_pcmcia_config = {
80         .devs         = &collie_pcmcia_scoop[0],
81         .num_devs     = 1,
82 };
83
84
85 static struct mcp_plat_data collie_mcp_data = {
86         .mccr0          = MCCR0_ADM | MCCR0_ExtClk,
87         .sclk_rate      = 9216000,
88 };
89
90 #ifdef CONFIG_SHARP_LOCOMO
91 /*
92  * low-level UART features.
93  */
94 static struct locomo_dev *uart_dev = NULL;
95
96 static void collie_uart_set_mctrl(struct uart_port *port, u_int mctrl)
97 {
98         if (!uart_dev) return;
99
100         if (mctrl & TIOCM_RTS)
101                 locomo_gpio_write(uart_dev, LOCOMO_GPIO_RTS, 0);
102         else
103                 locomo_gpio_write(uart_dev, LOCOMO_GPIO_RTS, 1);
104
105         if (mctrl & TIOCM_DTR)
106                 locomo_gpio_write(uart_dev, LOCOMO_GPIO_DTR, 0);
107         else
108                 locomo_gpio_write(uart_dev, LOCOMO_GPIO_DTR, 1);
109 }
110
111 static u_int collie_uart_get_mctrl(struct uart_port *port)
112 {
113         int ret = TIOCM_CD;
114         unsigned int r;
115         if (!uart_dev) return ret;
116
117         r = locomo_gpio_read_output(uart_dev, LOCOMO_GPIO_CTS & LOCOMO_GPIO_DSR);
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         uart_dev = dev;
134         return 0;
135 }
136
137 static int collie_uart_remove(struct locomo_dev *dev)
138 {
139         uart_dev = NULL;
140         return 0;
141 }
142
143 static struct locomo_driver collie_uart_driver = {
144         .drv = {
145                 .name = "collie_uart",
146         },
147         .devid  = LOCOMO_DEVID_UART,
148         .probe  = collie_uart_probe,
149         .remove = collie_uart_remove,
150 };
151
152 static int __init collie_uart_init(void) {
153         return locomo_driver_register(&collie_uart_driver);
154 }
155 device_initcall(collie_uart_init);
156
157 #endif
158
159
160 static struct resource locomo_resources[] = {
161         [0] = {
162                 .start          = 0x40000000,
163                 .end            = 0x40001fff,
164                 .flags          = IORESOURCE_MEM,
165         },
166         [1] = {
167                 .start          = IRQ_GPIO25,
168                 .end            = IRQ_GPIO25,
169                 .flags          = IORESOURCE_IRQ,
170         },
171 };
172
173 static struct platform_device locomo_device = {
174         .name           = "locomo",
175         .id             = 0,
176         .num_resources  = ARRAY_SIZE(locomo_resources),
177         .resource       = locomo_resources,
178 };
179
180 static struct platform_device *devices[] __initdata = {
181         &locomo_device,
182         &colliescoop_device,
183 };
184
185 static struct mtd_partition collie_partitions[] = {
186         {
187                 .name           = "bootloader",
188                 .offset         = 0,
189                 .size           = 0x000C0000,
190                 .mask_flags     = MTD_WRITEABLE
191         }, {
192                 .name           = "kernel",
193                 .offset         = MTDPART_OFS_APPEND,
194                 .size           = 0x00100000,
195         }, {
196                 .name           = "rootfs",
197                 .offset         = MTDPART_OFS_APPEND,
198                 .size           = 0x00e20000,
199         }
200 };
201
202 static void collie_set_vpp(int vpp)
203 {
204         write_scoop_reg(&colliescoop_device.dev, SCOOP_GPCR, read_scoop_reg(&colliescoop_device.dev, SCOOP_GPCR) | COLLIE_SCP_VPEN);
205         if (vpp)
206                 write_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR, read_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR) | COLLIE_SCP_VPEN);
207         else
208                 write_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR, read_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR) & ~COLLIE_SCP_VPEN);
209 }
210
211 static struct flash_platform_data collie_flash_data = {
212         .map_name       = "cfi_probe",
213         .set_vpp        = collie_set_vpp,
214         .parts          = collie_partitions,
215         .nr_parts       = ARRAY_SIZE(collie_partitions),
216 };
217
218 static struct resource collie_flash_resources[] = {
219         {
220                 .start  = SA1100_CS0_PHYS,
221                 .end    = SA1100_CS0_PHYS + SZ_32M - 1,
222                 .flags  = IORESOURCE_MEM,
223         }
224 };
225
226 static void __init collie_init(void)
227 {
228         int ret = 0;
229
230         /* cpu initialize */
231         GAFR = ( GPIO_SSP_TXD | \
232                  GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SSP_CLK | GPIO_TIC_ACK | \
233                  GPIO_32_768kHz );
234
235         GPDR = ( GPIO_LDD8 | GPIO_LDD9 | GPIO_LDD10 | GPIO_LDD11 | GPIO_LDD12 | \
236                  GPIO_LDD13 | GPIO_LDD14 | GPIO_LDD15 | GPIO_SSP_TXD | \
237                  GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SDLC_SCLK | \
238                  GPIO_SDLC_AAF | GPIO_UART_SCLK1 | GPIO_32_768kHz );
239         GPLR = GPIO_GPIO18;
240
241         // PPC pin setting
242         PPDR = ( PPC_LDD0 | PPC_LDD1 | PPC_LDD2 | PPC_LDD3 | PPC_LDD4 | PPC_LDD5 | \
243                  PPC_LDD6 | PPC_LDD7 | PPC_L_PCLK | PPC_L_LCLK | PPC_L_FCLK | PPC_L_BIAS | \
244                  PPC_TXD1 | PPC_TXD2 | PPC_RXD2 | PPC_TXD3 | PPC_TXD4 | PPC_SCLK | PPC_SFRM );
245
246         PSDR = ( PPC_RXD1 | PPC_RXD2 | PPC_RXD3 | PPC_RXD4 );
247
248         GAFR |= GPIO_32_768kHz;
249         GPDR |= GPIO_32_768kHz;
250         TUCR  = TUCR_32_768kHz;
251
252         platform_scoop_config = &collie_pcmcia_config;
253
254         ret = platform_add_devices(devices, ARRAY_SIZE(devices));
255         if (ret) {
256                 printk(KERN_WARNING "collie: Unable to register LoCoMo device\n");
257         }
258
259         sa11x0_set_flash_data(&collie_flash_data, collie_flash_resources,
260                               ARRAY_SIZE(collie_flash_resources));
261         sa11x0_set_mcp_data(&collie_mcp_data);
262
263         sharpsl_save_param();
264 }
265
266 static struct map_desc collie_io_desc[] __initdata = {
267         {       /* 32M main flash (cs0) */
268                 .virtual        = 0xe8000000,
269                 .pfn            = __phys_to_pfn(0x00000000),
270                 .length         = 0x02000000,
271                 .type           = MT_DEVICE
272         }, {    /* 32M boot flash (cs1) */
273                 .virtual        = 0xea000000,
274                 .pfn            = __phys_to_pfn(0x08000000),
275                 .length         = 0x02000000,
276                 .type           = MT_DEVICE
277         }
278 };
279
280 static void __init collie_map_io(void)
281 {
282         sa1100_map_io();
283         iotable_init(collie_io_desc, ARRAY_SIZE(collie_io_desc));
284
285 #ifdef CONFIG_SHARP_LOCOMO
286         sa1100_register_uart_fns(&collie_port_fns);
287 #endif
288         sa1100_register_uart(0, 3);
289         sa1100_register_uart(1, 1);
290 }
291
292 MACHINE_START(COLLIE, "Sharp-Collie")
293         .phys_io        = 0x80000000,
294         .io_pg_offst    = ((0xf8000000) >> 18) & 0xfffc,
295         .map_io         = collie_map_io,
296         .init_irq       = sa1100_init_irq,
297         .timer          = &sa1100_timer,
298         .init_machine   = collie_init,
299 MACHINE_END