Commit | Line | Data |
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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
1da177e4 LT |
2 | /* |
3 | * Sharp SL-C7xx Series PCMCIA routines | |
4 | * | |
5 | * Copyright (c) 2004-2005 Richard Purdie | |
6 | * | |
7 | * Based on Sharp's 2.4 kernel patches and pxa2xx_mainstone.c | |
1da177e4 LT |
8 | */ |
9 | ||
10 | #include <linux/module.h> | |
11 | #include <linux/init.h> | |
12 | #include <linux/kernel.h> | |
13 | #include <linux/errno.h> | |
14 | #include <linux/interrupt.h> | |
d052d1be | 15 | #include <linux/platform_device.h> |
1da177e4 | 16 | |
77bb86a1 | 17 | #include <asm/mach-types.h> |
a09e64fb | 18 | #include <mach/hardware.h> |
1da177e4 | 19 | #include <asm/irq.h> |
1da177e4 | 20 | #include <asm/hardware/scoop.h> |
1da177e4 LT |
21 | |
22 | #include "soc_common.h" | |
23 | ||
24 | #define NO_KEEP_VS 0x0001 | |
a63ae442 RP |
25 | #define SCOOP_DEV platform_scoop_config->devs |
26 | ||
945b9579 | 27 | static void sharpsl_pcmcia_init_reset(struct soc_pcmcia_socket *skt) |
1da177e4 | 28 | { |
945b9579 RP |
29 | struct scoop_pcmcia_dev *scoopdev = &SCOOP_DEV[skt->nr]; |
30 | ||
0ce7625f | 31 | reset_scoop(scoopdev->dev); |
945b9579 RP |
32 | |
33 | /* Shared power controls need to be handled carefully */ | |
34 | if (platform_scoop_config->power_ctrl) | |
35 | platform_scoop_config->power_ctrl(scoopdev->dev, 0x0000, skt->nr); | |
36 | else | |
37 | write_scoop_reg(scoopdev->dev, SCOOP_CPR, 0x0000); | |
38 | ||
0ce7625f RP |
39 | scoopdev->keep_vs = NO_KEEP_VS; |
40 | scoopdev->keep_rd = 0; | |
1da177e4 LT |
41 | } |
42 | ||
43 | static int sharpsl_pcmcia_hw_init(struct soc_pcmcia_socket *skt) | |
44 | { | |
a63ae442 | 45 | if (SCOOP_DEV[skt->nr].cd_irq >= 0) { |
a9bb5a4b RK |
46 | skt->stat[SOC_STAT_CD].irq = SCOOP_DEV[skt->nr].cd_irq; |
47 | skt->stat[SOC_STAT_CD].name = SCOOP_DEV[skt->nr].cd_irq_str; | |
1da177e4 LT |
48 | } |
49 | ||
66024db5 | 50 | skt->socket.pci_irq = SCOOP_DEV[skt->nr].irq; |
1da177e4 LT |
51 | |
52 | return 0; | |
53 | } | |
54 | ||
1da177e4 LT |
55 | static void sharpsl_pcmcia_socket_state(struct soc_pcmcia_socket *skt, |
56 | struct pcmcia_state *state) | |
57 | { | |
58 | unsigned short cpr, csr; | |
a63ae442 | 59 | struct device *scoop = SCOOP_DEV[skt->nr].dev; |
1da177e4 | 60 | |
a63ae442 | 61 | cpr = read_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_CPR); |
1da177e4 | 62 | |
0ce7625f RP |
63 | write_scoop_reg(scoop, SCOOP_IRM, 0x00FF); |
64 | write_scoop_reg(scoop, SCOOP_ISR, 0x0000); | |
65 | write_scoop_reg(scoop, SCOOP_IRM, 0x0000); | |
66 | csr = read_scoop_reg(scoop, SCOOP_CSR); | |
1da177e4 LT |
67 | if (csr & 0x0004) { |
68 | /* card eject */ | |
0ce7625f | 69 | write_scoop_reg(scoop, SCOOP_CDR, 0x0000); |
a63ae442 | 70 | SCOOP_DEV[skt->nr].keep_vs = NO_KEEP_VS; |
1da177e4 | 71 | } |
a63ae442 | 72 | else if (!(SCOOP_DEV[skt->nr].keep_vs & NO_KEEP_VS)) { |
1da177e4 | 73 | /* keep vs1,vs2 */ |
0ce7625f | 74 | write_scoop_reg(scoop, SCOOP_CDR, 0x0000); |
a63ae442 | 75 | csr |= SCOOP_DEV[skt->nr].keep_vs; |
1da177e4 LT |
76 | } |
77 | else if (cpr & 0x0003) { | |
78 | /* power on */ | |
0ce7625f | 79 | write_scoop_reg(scoop, SCOOP_CDR, 0x0000); |
a63ae442 | 80 | SCOOP_DEV[skt->nr].keep_vs = (csr & 0x00C0); |
1da177e4 LT |
81 | } |
82 | else { | |
83 | /* card detect */ | |
a63ae442 RP |
84 | if ((machine_is_spitz() || machine_is_borzoi()) && skt->nr == 1) { |
85 | write_scoop_reg(scoop, SCOOP_CDR, 0x0000); | |
86 | } else { | |
87 | write_scoop_reg(scoop, SCOOP_CDR, 0x0002); | |
88 | } | |
1da177e4 LT |
89 | } |
90 | ||
91 | state->detect = (csr & 0x0004) ? 0 : 1; | |
92 | state->ready = (csr & 0x0002) ? 1 : 0; | |
93 | state->bvd1 = (csr & 0x0010) ? 1 : 0; | |
94 | state->bvd2 = (csr & 0x0020) ? 1 : 0; | |
95 | state->wrprot = (csr & 0x0008) ? 1 : 0; | |
96 | state->vs_3v = (csr & 0x0040) ? 0 : 1; | |
97 | state->vs_Xv = (csr & 0x0080) ? 0 : 1; | |
98 | ||
99 | if ((cpr & 0x0080) && ((cpr & 0x8040) != 0x8040)) { | |
100 | printk(KERN_ERR "sharpsl_pcmcia_socket_state(): CPR=%04X, Low voltage!\n", cpr); | |
101 | } | |
1da177e4 LT |
102 | } |
103 | ||
104 | ||
105 | static int sharpsl_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, | |
106 | const socket_state_t *state) | |
107 | { | |
108 | unsigned long flags; | |
a63ae442 | 109 | struct device *scoop = SCOOP_DEV[skt->nr].dev; |
1da177e4 LT |
110 | |
111 | unsigned short cpr, ncpr, ccr, nccr, mcr, nmcr, imr, nimr; | |
112 | ||
113 | switch (state->Vcc) { | |
114 | case 0: break; | |
115 | case 33: break; | |
116 | case 50: break; | |
117 | default: | |
118 | printk(KERN_ERR "sharpsl_pcmcia_configure_socket(): bad Vcc %u\n", state->Vcc); | |
119 | return -1; | |
120 | } | |
121 | ||
122 | if ((state->Vpp!=state->Vcc) && (state->Vpp!=0)) { | |
123 | printk(KERN_ERR "CF slot cannot support Vpp %u\n", state->Vpp); | |
124 | return -1; | |
125 | } | |
126 | ||
127 | local_irq_save(flags); | |
128 | ||
0ce7625f RP |
129 | nmcr = (mcr = read_scoop_reg(scoop, SCOOP_MCR)) & ~0x0010; |
130 | ncpr = (cpr = read_scoop_reg(scoop, SCOOP_CPR)) & ~0x0083; | |
131 | nccr = (ccr = read_scoop_reg(scoop, SCOOP_CCR)) & ~0x0080; | |
132 | nimr = (imr = read_scoop_reg(scoop, SCOOP_IMR)) & ~0x003E; | |
1da177e4 | 133 | |
a63ae442 RP |
134 | if ((machine_is_spitz() || machine_is_borzoi() || machine_is_akita()) && skt->nr == 0) { |
135 | ncpr |= (state->Vcc == 33) ? 0x0002 : | |
136 | (state->Vcc == 50) ? 0x0002 : 0; | |
137 | } else { | |
138 | ncpr |= (state->Vcc == 33) ? 0x0001 : | |
139 | (state->Vcc == 50) ? 0x0002 : 0; | |
140 | } | |
1da177e4 LT |
141 | nmcr |= (state->flags&SS_IOCARD) ? 0x0010 : 0; |
142 | ncpr |= (state->flags&SS_OUTPUT_ENA) ? 0x0080 : 0; | |
143 | nccr |= (state->flags&SS_RESET)? 0x0080: 0; | |
144 | nimr |= ((skt->status&SS_DETECT) ? 0x0004 : 0)| | |
145 | ((skt->status&SS_READY) ? 0x0002 : 0)| | |
146 | ((skt->status&SS_BATDEAD)? 0x0010 : 0)| | |
147 | ((skt->status&SS_BATWARN)? 0x0020 : 0)| | |
148 | ((skt->status&SS_STSCHG) ? 0x0010 : 0)| | |
149 | ((skt->status&SS_WRPROT) ? 0x0008 : 0); | |
150 | ||
151 | if (!(ncpr & 0x0003)) { | |
a63ae442 RP |
152 | SCOOP_DEV[skt->nr].keep_rd = 0; |
153 | } else if (!SCOOP_DEV[skt->nr].keep_rd) { | |
1da177e4 | 154 | if (nccr & 0x0080) |
a63ae442 | 155 | SCOOP_DEV[skt->nr].keep_rd = 1; |
1da177e4 LT |
156 | else |
157 | nccr |= 0x0080; | |
158 | } | |
159 | ||
160 | if (mcr != nmcr) | |
0ce7625f | 161 | write_scoop_reg(scoop, SCOOP_MCR, nmcr); |
a63ae442 RP |
162 | if (cpr != ncpr) { |
163 | if (platform_scoop_config->power_ctrl) | |
164 | platform_scoop_config->power_ctrl(scoop, ncpr , skt->nr); | |
165 | else | |
166 | write_scoop_reg(scoop, SCOOP_CPR, ncpr); | |
167 | } | |
1da177e4 | 168 | if (ccr != nccr) |
0ce7625f | 169 | write_scoop_reg(scoop, SCOOP_CCR, nccr); |
1da177e4 | 170 | if (imr != nimr) |
0ce7625f | 171 | write_scoop_reg(scoop, SCOOP_IMR, nimr); |
1da177e4 LT |
172 | |
173 | local_irq_restore(flags); | |
174 | ||
175 | return 0; | |
176 | } | |
177 | ||
178 | static void sharpsl_pcmcia_socket_init(struct soc_pcmcia_socket *skt) | |
179 | { | |
945b9579 | 180 | sharpsl_pcmcia_init_reset(skt); |
0ce7625f RP |
181 | |
182 | /* Enable interrupt */ | |
a63ae442 RP |
183 | write_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_IMR, 0x00C0); |
184 | write_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_MCR, 0x0101); | |
185 | SCOOP_DEV[skt->nr].keep_vs = NO_KEEP_VS; | |
1da177e4 LT |
186 | } |
187 | ||
188 | static void sharpsl_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) | |
189 | { | |
945b9579 | 190 | sharpsl_pcmcia_init_reset(skt); |
1da177e4 LT |
191 | } |
192 | ||
fdc858a4 | 193 | static struct pcmcia_low_level sharpsl_pcmcia_ops = { |
a63ae442 RP |
194 | .owner = THIS_MODULE, |
195 | .hw_init = sharpsl_pcmcia_hw_init, | |
a63ae442 RP |
196 | .socket_state = sharpsl_pcmcia_socket_state, |
197 | .configure_socket = sharpsl_pcmcia_configure_socket, | |
198 | .socket_init = sharpsl_pcmcia_socket_init, | |
199 | .socket_suspend = sharpsl_pcmcia_socket_suspend, | |
200 | .first = 0, | |
201 | .nr = 0, | |
1da177e4 LT |
202 | }; |
203 | ||
77bb86a1 | 204 | #ifdef CONFIG_SA1100_COLLIE |
a63ae442 RP |
205 | #include "sa11xx_base.h" |
206 | ||
34cdf25a | 207 | int pcmcia_collie_init(struct device *dev) |
77bb86a1 PM |
208 | { |
209 | int ret = -ENODEV; | |
210 | ||
211 | if (machine_is_collie()) | |
212 | ret = sa11xx_drv_pcmcia_probe(dev, &sharpsl_pcmcia_ops, 0, 1); | |
213 | ||
214 | return ret; | |
215 | } | |
216 | ||
217 | #else | |
218 | ||
a63ae442 RP |
219 | static struct platform_device *sharpsl_pcmcia_device; |
220 | ||
1da177e4 LT |
221 | static int __init sharpsl_pcmcia_init(void) |
222 | { | |
223 | int ret; | |
224 | ||
ae1036a2 DB |
225 | if (!platform_scoop_config) |
226 | return -ENODEV; | |
227 | ||
b016450f RP |
228 | sharpsl_pcmcia_ops.nr = platform_scoop_config->num_devs; |
229 | sharpsl_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); | |
230 | ||
1da177e4 LT |
231 | if (!sharpsl_pcmcia_device) |
232 | return -ENOMEM; | |
0ce7625f | 233 | |
4e5e8de0 RK |
234 | ret = platform_device_add_data(sharpsl_pcmcia_device, |
235 | &sharpsl_pcmcia_ops, sizeof(sharpsl_pcmcia_ops)); | |
236 | if (ret == 0) { | |
237 | sharpsl_pcmcia_device->dev.parent = platform_scoop_config->devs[0].dev; | |
238 | ret = platform_device_add(sharpsl_pcmcia_device); | |
239 | } | |
1da177e4 | 240 | |
1da177e4 | 241 | if (ret) |
b016450f | 242 | platform_device_put(sharpsl_pcmcia_device); |
1da177e4 LT |
243 | |
244 | return ret; | |
245 | } | |
246 | ||
247 | static void __exit sharpsl_pcmcia_exit(void) | |
248 | { | |
1da177e4 LT |
249 | platform_device_unregister(sharpsl_pcmcia_device); |
250 | } | |
251 | ||
f36598ae | 252 | fs_initcall(sharpsl_pcmcia_init); |
1da177e4 | 253 | module_exit(sharpsl_pcmcia_exit); |
77bb86a1 | 254 | #endif |
1da177e4 LT |
255 | |
256 | MODULE_DESCRIPTION("Sharp SL Series PCMCIA Support"); | |
257 | MODULE_LICENSE("GPL"); | |
43cc71ee | 258 | MODULE_ALIAS("platform:pxa2xx-pcmcia"); |