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1da177e4 LT |
1 | /* |
2 | * Sharp SL-C7xx Series PCMCIA routines | |
3 | * | |
4 | * Copyright (c) 2004-2005 Richard Purdie | |
5 | * | |
6 | * Based on Sharp's 2.4 kernel patches and pxa2xx_mainstone.c | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | * | |
12 | */ | |
13 | ||
14 | #include <linux/module.h> | |
15 | #include <linux/init.h> | |
16 | #include <linux/kernel.h> | |
17 | #include <linux/errno.h> | |
18 | #include <linux/interrupt.h> | |
d052d1be | 19 | #include <linux/platform_device.h> |
1da177e4 | 20 | |
77bb86a1 | 21 | #include <asm/mach-types.h> |
a09e64fb | 22 | #include <mach/hardware.h> |
1da177e4 | 23 | #include <asm/irq.h> |
1da177e4 | 24 | #include <asm/hardware/scoop.h> |
1da177e4 LT |
25 | |
26 | #include "soc_common.h" | |
27 | ||
28 | #define NO_KEEP_VS 0x0001 | |
a63ae442 RP |
29 | #define SCOOP_DEV platform_scoop_config->devs |
30 | ||
945b9579 | 31 | static void sharpsl_pcmcia_init_reset(struct soc_pcmcia_socket *skt) |
1da177e4 | 32 | { |
945b9579 RP |
33 | struct scoop_pcmcia_dev *scoopdev = &SCOOP_DEV[skt->nr]; |
34 | ||
0ce7625f | 35 | reset_scoop(scoopdev->dev); |
945b9579 RP |
36 | |
37 | /* Shared power controls need to be handled carefully */ | |
38 | if (platform_scoop_config->power_ctrl) | |
39 | platform_scoop_config->power_ctrl(scoopdev->dev, 0x0000, skt->nr); | |
40 | else | |
41 | write_scoop_reg(scoopdev->dev, SCOOP_CPR, 0x0000); | |
42 | ||
0ce7625f RP |
43 | scoopdev->keep_vs = NO_KEEP_VS; |
44 | scoopdev->keep_rd = 0; | |
1da177e4 LT |
45 | } |
46 | ||
47 | static int sharpsl_pcmcia_hw_init(struct soc_pcmcia_socket *skt) | |
48 | { | |
49 | int ret; | |
50 | ||
a63ae442 RP |
51 | if (platform_scoop_config->pcmcia_init) |
52 | platform_scoop_config->pcmcia_init(); | |
1da177e4 LT |
53 | |
54 | /* Register interrupts */ | |
a63ae442 | 55 | if (SCOOP_DEV[skt->nr].cd_irq >= 0) { |
0ce7625f RP |
56 | struct pcmcia_irqs cd_irq; |
57 | ||
58 | cd_irq.sock = skt->nr; | |
a63ae442 RP |
59 | cd_irq.irq = SCOOP_DEV[skt->nr].cd_irq; |
60 | cd_irq.str = SCOOP_DEV[skt->nr].cd_irq_str; | |
0ce7625f RP |
61 | ret = soc_pcmcia_request_irqs(skt, &cd_irq, 1); |
62 | ||
63 | if (ret) { | |
64 | printk(KERN_ERR "Request for Compact Flash IRQ failed\n"); | |
65 | return ret; | |
66 | } | |
1da177e4 LT |
67 | } |
68 | ||
66024db5 | 69 | skt->socket.pci_irq = SCOOP_DEV[skt->nr].irq; |
1da177e4 LT |
70 | |
71 | return 0; | |
72 | } | |
73 | ||
74 | static void sharpsl_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) | |
75 | { | |
a63ae442 | 76 | if (SCOOP_DEV[skt->nr].cd_irq >= 0) { |
0ce7625f | 77 | struct pcmcia_irqs cd_irq; |
1da177e4 | 78 | |
0ce7625f | 79 | cd_irq.sock = skt->nr; |
a63ae442 RP |
80 | cd_irq.irq = SCOOP_DEV[skt->nr].cd_irq; |
81 | cd_irq.str = SCOOP_DEV[skt->nr].cd_irq_str; | |
0ce7625f RP |
82 | soc_pcmcia_free_irqs(skt, &cd_irq, 1); |
83 | } | |
1da177e4 LT |
84 | } |
85 | ||
86 | ||
87 | static void sharpsl_pcmcia_socket_state(struct soc_pcmcia_socket *skt, | |
88 | struct pcmcia_state *state) | |
89 | { | |
90 | unsigned short cpr, csr; | |
a63ae442 | 91 | struct device *scoop = SCOOP_DEV[skt->nr].dev; |
1da177e4 | 92 | |
a63ae442 | 93 | cpr = read_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_CPR); |
1da177e4 | 94 | |
0ce7625f RP |
95 | write_scoop_reg(scoop, SCOOP_IRM, 0x00FF); |
96 | write_scoop_reg(scoop, SCOOP_ISR, 0x0000); | |
97 | write_scoop_reg(scoop, SCOOP_IRM, 0x0000); | |
98 | csr = read_scoop_reg(scoop, SCOOP_CSR); | |
1da177e4 LT |
99 | if (csr & 0x0004) { |
100 | /* card eject */ | |
0ce7625f | 101 | write_scoop_reg(scoop, SCOOP_CDR, 0x0000); |
a63ae442 | 102 | SCOOP_DEV[skt->nr].keep_vs = NO_KEEP_VS; |
1da177e4 | 103 | } |
a63ae442 | 104 | else if (!(SCOOP_DEV[skt->nr].keep_vs & NO_KEEP_VS)) { |
1da177e4 | 105 | /* keep vs1,vs2 */ |
0ce7625f | 106 | write_scoop_reg(scoop, SCOOP_CDR, 0x0000); |
a63ae442 | 107 | csr |= SCOOP_DEV[skt->nr].keep_vs; |
1da177e4 LT |
108 | } |
109 | else if (cpr & 0x0003) { | |
110 | /* power on */ | |
0ce7625f | 111 | write_scoop_reg(scoop, SCOOP_CDR, 0x0000); |
a63ae442 | 112 | SCOOP_DEV[skt->nr].keep_vs = (csr & 0x00C0); |
1da177e4 LT |
113 | } |
114 | else { | |
115 | /* card detect */ | |
a63ae442 RP |
116 | if ((machine_is_spitz() || machine_is_borzoi()) && skt->nr == 1) { |
117 | write_scoop_reg(scoop, SCOOP_CDR, 0x0000); | |
118 | } else { | |
119 | write_scoop_reg(scoop, SCOOP_CDR, 0x0002); | |
120 | } | |
1da177e4 LT |
121 | } |
122 | ||
123 | state->detect = (csr & 0x0004) ? 0 : 1; | |
124 | state->ready = (csr & 0x0002) ? 1 : 0; | |
125 | state->bvd1 = (csr & 0x0010) ? 1 : 0; | |
126 | state->bvd2 = (csr & 0x0020) ? 1 : 0; | |
127 | state->wrprot = (csr & 0x0008) ? 1 : 0; | |
128 | state->vs_3v = (csr & 0x0040) ? 0 : 1; | |
129 | state->vs_Xv = (csr & 0x0080) ? 0 : 1; | |
130 | ||
131 | if ((cpr & 0x0080) && ((cpr & 0x8040) != 0x8040)) { | |
132 | printk(KERN_ERR "sharpsl_pcmcia_socket_state(): CPR=%04X, Low voltage!\n", cpr); | |
133 | } | |
1da177e4 LT |
134 | } |
135 | ||
136 | ||
137 | static int sharpsl_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, | |
138 | const socket_state_t *state) | |
139 | { | |
140 | unsigned long flags; | |
a63ae442 | 141 | struct device *scoop = SCOOP_DEV[skt->nr].dev; |
1da177e4 LT |
142 | |
143 | unsigned short cpr, ncpr, ccr, nccr, mcr, nmcr, imr, nimr; | |
144 | ||
145 | switch (state->Vcc) { | |
146 | case 0: break; | |
147 | case 33: break; | |
148 | case 50: break; | |
149 | default: | |
150 | printk(KERN_ERR "sharpsl_pcmcia_configure_socket(): bad Vcc %u\n", state->Vcc); | |
151 | return -1; | |
152 | } | |
153 | ||
154 | if ((state->Vpp!=state->Vcc) && (state->Vpp!=0)) { | |
155 | printk(KERN_ERR "CF slot cannot support Vpp %u\n", state->Vpp); | |
156 | return -1; | |
157 | } | |
158 | ||
159 | local_irq_save(flags); | |
160 | ||
0ce7625f RP |
161 | nmcr = (mcr = read_scoop_reg(scoop, SCOOP_MCR)) & ~0x0010; |
162 | ncpr = (cpr = read_scoop_reg(scoop, SCOOP_CPR)) & ~0x0083; | |
163 | nccr = (ccr = read_scoop_reg(scoop, SCOOP_CCR)) & ~0x0080; | |
164 | nimr = (imr = read_scoop_reg(scoop, SCOOP_IMR)) & ~0x003E; | |
1da177e4 | 165 | |
a63ae442 RP |
166 | if ((machine_is_spitz() || machine_is_borzoi() || machine_is_akita()) && skt->nr == 0) { |
167 | ncpr |= (state->Vcc == 33) ? 0x0002 : | |
168 | (state->Vcc == 50) ? 0x0002 : 0; | |
169 | } else { | |
170 | ncpr |= (state->Vcc == 33) ? 0x0001 : | |
171 | (state->Vcc == 50) ? 0x0002 : 0; | |
172 | } | |
1da177e4 LT |
173 | nmcr |= (state->flags&SS_IOCARD) ? 0x0010 : 0; |
174 | ncpr |= (state->flags&SS_OUTPUT_ENA) ? 0x0080 : 0; | |
175 | nccr |= (state->flags&SS_RESET)? 0x0080: 0; | |
176 | nimr |= ((skt->status&SS_DETECT) ? 0x0004 : 0)| | |
177 | ((skt->status&SS_READY) ? 0x0002 : 0)| | |
178 | ((skt->status&SS_BATDEAD)? 0x0010 : 0)| | |
179 | ((skt->status&SS_BATWARN)? 0x0020 : 0)| | |
180 | ((skt->status&SS_STSCHG) ? 0x0010 : 0)| | |
181 | ((skt->status&SS_WRPROT) ? 0x0008 : 0); | |
182 | ||
183 | if (!(ncpr & 0x0003)) { | |
a63ae442 RP |
184 | SCOOP_DEV[skt->nr].keep_rd = 0; |
185 | } else if (!SCOOP_DEV[skt->nr].keep_rd) { | |
1da177e4 | 186 | if (nccr & 0x0080) |
a63ae442 | 187 | SCOOP_DEV[skt->nr].keep_rd = 1; |
1da177e4 LT |
188 | else |
189 | nccr |= 0x0080; | |
190 | } | |
191 | ||
192 | if (mcr != nmcr) | |
0ce7625f | 193 | write_scoop_reg(scoop, SCOOP_MCR, nmcr); |
a63ae442 RP |
194 | if (cpr != ncpr) { |
195 | if (platform_scoop_config->power_ctrl) | |
196 | platform_scoop_config->power_ctrl(scoop, ncpr , skt->nr); | |
197 | else | |
198 | write_scoop_reg(scoop, SCOOP_CPR, ncpr); | |
199 | } | |
1da177e4 | 200 | if (ccr != nccr) |
0ce7625f | 201 | write_scoop_reg(scoop, SCOOP_CCR, nccr); |
1da177e4 | 202 | if (imr != nimr) |
0ce7625f | 203 | write_scoop_reg(scoop, SCOOP_IMR, nimr); |
1da177e4 LT |
204 | |
205 | local_irq_restore(flags); | |
206 | ||
207 | return 0; | |
208 | } | |
209 | ||
210 | static void sharpsl_pcmcia_socket_init(struct soc_pcmcia_socket *skt) | |
211 | { | |
945b9579 | 212 | sharpsl_pcmcia_init_reset(skt); |
0ce7625f RP |
213 | |
214 | /* Enable interrupt */ | |
a63ae442 RP |
215 | write_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_IMR, 0x00C0); |
216 | write_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_MCR, 0x0101); | |
217 | SCOOP_DEV[skt->nr].keep_vs = NO_KEEP_VS; | |
1da177e4 LT |
218 | } |
219 | ||
220 | static void sharpsl_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) | |
221 | { | |
945b9579 | 222 | sharpsl_pcmcia_init_reset(skt); |
1da177e4 LT |
223 | } |
224 | ||
4e5e8de0 | 225 | static struct pcmcia_low_level sharpsl_pcmcia_ops __initdata = { |
a63ae442 RP |
226 | .owner = THIS_MODULE, |
227 | .hw_init = sharpsl_pcmcia_hw_init, | |
228 | .hw_shutdown = sharpsl_pcmcia_hw_shutdown, | |
229 | .socket_state = sharpsl_pcmcia_socket_state, | |
230 | .configure_socket = sharpsl_pcmcia_configure_socket, | |
231 | .socket_init = sharpsl_pcmcia_socket_init, | |
232 | .socket_suspend = sharpsl_pcmcia_socket_suspend, | |
233 | .first = 0, | |
234 | .nr = 0, | |
1da177e4 LT |
235 | }; |
236 | ||
77bb86a1 | 237 | #ifdef CONFIG_SA1100_COLLIE |
a63ae442 RP |
238 | #include "sa11xx_base.h" |
239 | ||
77bb86a1 PM |
240 | int __init pcmcia_collie_init(struct device *dev) |
241 | { | |
242 | int ret = -ENODEV; | |
243 | ||
244 | if (machine_is_collie()) | |
245 | ret = sa11xx_drv_pcmcia_probe(dev, &sharpsl_pcmcia_ops, 0, 1); | |
246 | ||
247 | return ret; | |
248 | } | |
249 | ||
250 | #else | |
251 | ||
a63ae442 RP |
252 | static struct platform_device *sharpsl_pcmcia_device; |
253 | ||
1da177e4 LT |
254 | static int __init sharpsl_pcmcia_init(void) |
255 | { | |
256 | int ret; | |
257 | ||
ae1036a2 DES |
258 | if (!platform_scoop_config) |
259 | return -ENODEV; | |
260 | ||
b016450f RP |
261 | sharpsl_pcmcia_ops.nr = platform_scoop_config->num_devs; |
262 | sharpsl_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); | |
263 | ||
1da177e4 LT |
264 | if (!sharpsl_pcmcia_device) |
265 | return -ENOMEM; | |
0ce7625f | 266 | |
4e5e8de0 RK |
267 | ret = platform_device_add_data(sharpsl_pcmcia_device, |
268 | &sharpsl_pcmcia_ops, sizeof(sharpsl_pcmcia_ops)); | |
269 | if (ret == 0) { | |
270 | sharpsl_pcmcia_device->dev.parent = platform_scoop_config->devs[0].dev; | |
271 | ret = platform_device_add(sharpsl_pcmcia_device); | |
272 | } | |
1da177e4 | 273 | |
1da177e4 | 274 | if (ret) |
b016450f | 275 | platform_device_put(sharpsl_pcmcia_device); |
1da177e4 LT |
276 | |
277 | return ret; | |
278 | } | |
279 | ||
280 | static void __exit sharpsl_pcmcia_exit(void) | |
281 | { | |
1da177e4 LT |
282 | platform_device_unregister(sharpsl_pcmcia_device); |
283 | } | |
284 | ||
f36598ae | 285 | fs_initcall(sharpsl_pcmcia_init); |
1da177e4 | 286 | module_exit(sharpsl_pcmcia_exit); |
77bb86a1 | 287 | #endif |
1da177e4 LT |
288 | |
289 | MODULE_DESCRIPTION("Sharp SL Series PCMCIA Support"); | |
290 | MODULE_LICENSE("GPL"); | |
43cc71ee | 291 | MODULE_ALIAS("platform:pxa2xx-pcmcia"); |