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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> |
1da177e4 | 18 | #include <asm/irq.h> |
1da177e4 | 19 | #include <asm/hardware/scoop.h> |
1da177e4 | 20 | |
b83deaa7 | 21 | #include <pcmcia/soc_common.h> |
1da177e4 LT |
22 | |
23 | #define NO_KEEP_VS 0x0001 | |
a63ae442 RP |
24 | #define SCOOP_DEV platform_scoop_config->devs |
25 | ||
945b9579 | 26 | static void sharpsl_pcmcia_init_reset(struct soc_pcmcia_socket *skt) |
1da177e4 | 27 | { |
945b9579 RP |
28 | struct scoop_pcmcia_dev *scoopdev = &SCOOP_DEV[skt->nr]; |
29 | ||
0ce7625f | 30 | reset_scoop(scoopdev->dev); |
945b9579 RP |
31 | |
32 | /* Shared power controls need to be handled carefully */ | |
33 | if (platform_scoop_config->power_ctrl) | |
34 | platform_scoop_config->power_ctrl(scoopdev->dev, 0x0000, skt->nr); | |
35 | else | |
36 | write_scoop_reg(scoopdev->dev, SCOOP_CPR, 0x0000); | |
37 | ||
0ce7625f RP |
38 | scoopdev->keep_vs = NO_KEEP_VS; |
39 | scoopdev->keep_rd = 0; | |
1da177e4 LT |
40 | } |
41 | ||
42 | static int sharpsl_pcmcia_hw_init(struct soc_pcmcia_socket *skt) | |
43 | { | |
a63ae442 | 44 | if (SCOOP_DEV[skt->nr].cd_irq >= 0) { |
a9bb5a4b RK |
45 | skt->stat[SOC_STAT_CD].irq = SCOOP_DEV[skt->nr].cd_irq; |
46 | skt->stat[SOC_STAT_CD].name = SCOOP_DEV[skt->nr].cd_irq_str; | |
1da177e4 LT |
47 | } |
48 | ||
66024db5 | 49 | skt->socket.pci_irq = SCOOP_DEV[skt->nr].irq; |
1da177e4 LT |
50 | |
51 | return 0; | |
52 | } | |
53 | ||
1da177e4 LT |
54 | static void sharpsl_pcmcia_socket_state(struct soc_pcmcia_socket *skt, |
55 | struct pcmcia_state *state) | |
56 | { | |
57 | unsigned short cpr, csr; | |
a63ae442 | 58 | struct device *scoop = SCOOP_DEV[skt->nr].dev; |
1da177e4 | 59 | |
a63ae442 | 60 | cpr = read_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_CPR); |
1da177e4 | 61 | |
0ce7625f RP |
62 | write_scoop_reg(scoop, SCOOP_IRM, 0x00FF); |
63 | write_scoop_reg(scoop, SCOOP_ISR, 0x0000); | |
64 | write_scoop_reg(scoop, SCOOP_IRM, 0x0000); | |
65 | csr = read_scoop_reg(scoop, SCOOP_CSR); | |
1da177e4 LT |
66 | if (csr & 0x0004) { |
67 | /* card eject */ | |
0ce7625f | 68 | write_scoop_reg(scoop, SCOOP_CDR, 0x0000); |
a63ae442 | 69 | SCOOP_DEV[skt->nr].keep_vs = NO_KEEP_VS; |
1da177e4 | 70 | } |
a63ae442 | 71 | else if (!(SCOOP_DEV[skt->nr].keep_vs & NO_KEEP_VS)) { |
1da177e4 | 72 | /* keep vs1,vs2 */ |
0ce7625f | 73 | write_scoop_reg(scoop, SCOOP_CDR, 0x0000); |
a63ae442 | 74 | csr |= SCOOP_DEV[skt->nr].keep_vs; |
1da177e4 LT |
75 | } |
76 | else if (cpr & 0x0003) { | |
77 | /* power on */ | |
0ce7625f | 78 | write_scoop_reg(scoop, SCOOP_CDR, 0x0000); |
a63ae442 | 79 | SCOOP_DEV[skt->nr].keep_vs = (csr & 0x00C0); |
1da177e4 LT |
80 | } |
81 | else { | |
82 | /* card detect */ | |
a63ae442 RP |
83 | if ((machine_is_spitz() || machine_is_borzoi()) && skt->nr == 1) { |
84 | write_scoop_reg(scoop, SCOOP_CDR, 0x0000); | |
85 | } else { | |
86 | write_scoop_reg(scoop, SCOOP_CDR, 0x0002); | |
87 | } | |
1da177e4 LT |
88 | } |
89 | ||
90 | state->detect = (csr & 0x0004) ? 0 : 1; | |
91 | state->ready = (csr & 0x0002) ? 1 : 0; | |
92 | state->bvd1 = (csr & 0x0010) ? 1 : 0; | |
93 | state->bvd2 = (csr & 0x0020) ? 1 : 0; | |
94 | state->wrprot = (csr & 0x0008) ? 1 : 0; | |
95 | state->vs_3v = (csr & 0x0040) ? 0 : 1; | |
96 | state->vs_Xv = (csr & 0x0080) ? 0 : 1; | |
97 | ||
98 | if ((cpr & 0x0080) && ((cpr & 0x8040) != 0x8040)) { | |
99 | printk(KERN_ERR "sharpsl_pcmcia_socket_state(): CPR=%04X, Low voltage!\n", cpr); | |
100 | } | |
1da177e4 LT |
101 | } |
102 | ||
103 | ||
104 | static int sharpsl_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, | |
105 | const socket_state_t *state) | |
106 | { | |
107 | unsigned long flags; | |
a63ae442 | 108 | struct device *scoop = SCOOP_DEV[skt->nr].dev; |
1da177e4 LT |
109 | |
110 | unsigned short cpr, ncpr, ccr, nccr, mcr, nmcr, imr, nimr; | |
111 | ||
112 | switch (state->Vcc) { | |
113 | case 0: break; | |
114 | case 33: break; | |
115 | case 50: break; | |
116 | default: | |
117 | printk(KERN_ERR "sharpsl_pcmcia_configure_socket(): bad Vcc %u\n", state->Vcc); | |
118 | return -1; | |
119 | } | |
120 | ||
121 | if ((state->Vpp!=state->Vcc) && (state->Vpp!=0)) { | |
122 | printk(KERN_ERR "CF slot cannot support Vpp %u\n", state->Vpp); | |
123 | return -1; | |
124 | } | |
125 | ||
126 | local_irq_save(flags); | |
127 | ||
0ce7625f RP |
128 | nmcr = (mcr = read_scoop_reg(scoop, SCOOP_MCR)) & ~0x0010; |
129 | ncpr = (cpr = read_scoop_reg(scoop, SCOOP_CPR)) & ~0x0083; | |
130 | nccr = (ccr = read_scoop_reg(scoop, SCOOP_CCR)) & ~0x0080; | |
131 | nimr = (imr = read_scoop_reg(scoop, SCOOP_IMR)) & ~0x003E; | |
1da177e4 | 132 | |
a63ae442 RP |
133 | if ((machine_is_spitz() || machine_is_borzoi() || machine_is_akita()) && skt->nr == 0) { |
134 | ncpr |= (state->Vcc == 33) ? 0x0002 : | |
135 | (state->Vcc == 50) ? 0x0002 : 0; | |
136 | } else { | |
137 | ncpr |= (state->Vcc == 33) ? 0x0001 : | |
138 | (state->Vcc == 50) ? 0x0002 : 0; | |
139 | } | |
1da177e4 LT |
140 | nmcr |= (state->flags&SS_IOCARD) ? 0x0010 : 0; |
141 | ncpr |= (state->flags&SS_OUTPUT_ENA) ? 0x0080 : 0; | |
142 | nccr |= (state->flags&SS_RESET)? 0x0080: 0; | |
143 | nimr |= ((skt->status&SS_DETECT) ? 0x0004 : 0)| | |
144 | ((skt->status&SS_READY) ? 0x0002 : 0)| | |
145 | ((skt->status&SS_BATDEAD)? 0x0010 : 0)| | |
146 | ((skt->status&SS_BATWARN)? 0x0020 : 0)| | |
147 | ((skt->status&SS_STSCHG) ? 0x0010 : 0)| | |
148 | ((skt->status&SS_WRPROT) ? 0x0008 : 0); | |
149 | ||
150 | if (!(ncpr & 0x0003)) { | |
a63ae442 RP |
151 | SCOOP_DEV[skt->nr].keep_rd = 0; |
152 | } else if (!SCOOP_DEV[skt->nr].keep_rd) { | |
1da177e4 | 153 | if (nccr & 0x0080) |
a63ae442 | 154 | SCOOP_DEV[skt->nr].keep_rd = 1; |
1da177e4 LT |
155 | else |
156 | nccr |= 0x0080; | |
157 | } | |
158 | ||
159 | if (mcr != nmcr) | |
0ce7625f | 160 | write_scoop_reg(scoop, SCOOP_MCR, nmcr); |
a63ae442 RP |
161 | if (cpr != ncpr) { |
162 | if (platform_scoop_config->power_ctrl) | |
163 | platform_scoop_config->power_ctrl(scoop, ncpr , skt->nr); | |
164 | else | |
165 | write_scoop_reg(scoop, SCOOP_CPR, ncpr); | |
166 | } | |
1da177e4 | 167 | if (ccr != nccr) |
0ce7625f | 168 | write_scoop_reg(scoop, SCOOP_CCR, nccr); |
1da177e4 | 169 | if (imr != nimr) |
0ce7625f | 170 | write_scoop_reg(scoop, SCOOP_IMR, nimr); |
1da177e4 LT |
171 | |
172 | local_irq_restore(flags); | |
173 | ||
174 | return 0; | |
175 | } | |
176 | ||
177 | static void sharpsl_pcmcia_socket_init(struct soc_pcmcia_socket *skt) | |
178 | { | |
945b9579 | 179 | sharpsl_pcmcia_init_reset(skt); |
0ce7625f RP |
180 | |
181 | /* Enable interrupt */ | |
a63ae442 RP |
182 | write_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_IMR, 0x00C0); |
183 | write_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_MCR, 0x0101); | |
184 | SCOOP_DEV[skt->nr].keep_vs = NO_KEEP_VS; | |
1da177e4 LT |
185 | } |
186 | ||
187 | static void sharpsl_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) | |
188 | { | |
945b9579 | 189 | sharpsl_pcmcia_init_reset(skt); |
1da177e4 LT |
190 | } |
191 | ||
fdc858a4 | 192 | static struct pcmcia_low_level sharpsl_pcmcia_ops = { |
a63ae442 RP |
193 | .owner = THIS_MODULE, |
194 | .hw_init = sharpsl_pcmcia_hw_init, | |
a63ae442 RP |
195 | .socket_state = sharpsl_pcmcia_socket_state, |
196 | .configure_socket = sharpsl_pcmcia_configure_socket, | |
197 | .socket_init = sharpsl_pcmcia_socket_init, | |
198 | .socket_suspend = sharpsl_pcmcia_socket_suspend, | |
199 | .first = 0, | |
200 | .nr = 0, | |
1da177e4 LT |
201 | }; |
202 | ||
77bb86a1 | 203 | #ifdef CONFIG_SA1100_COLLIE |
a63ae442 RP |
204 | #include "sa11xx_base.h" |
205 | ||
34cdf25a | 206 | int pcmcia_collie_init(struct device *dev) |
77bb86a1 PM |
207 | { |
208 | int ret = -ENODEV; | |
209 | ||
210 | if (machine_is_collie()) | |
211 | ret = sa11xx_drv_pcmcia_probe(dev, &sharpsl_pcmcia_ops, 0, 1); | |
212 | ||
213 | return ret; | |
214 | } | |
215 | ||
216 | #else | |
217 | ||
a63ae442 RP |
218 | static struct platform_device *sharpsl_pcmcia_device; |
219 | ||
1da177e4 LT |
220 | static int __init sharpsl_pcmcia_init(void) |
221 | { | |
222 | int ret; | |
223 | ||
ae1036a2 DB |
224 | if (!platform_scoop_config) |
225 | return -ENODEV; | |
226 | ||
b016450f RP |
227 | sharpsl_pcmcia_ops.nr = platform_scoop_config->num_devs; |
228 | sharpsl_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); | |
229 | ||
1da177e4 LT |
230 | if (!sharpsl_pcmcia_device) |
231 | return -ENOMEM; | |
0ce7625f | 232 | |
4e5e8de0 RK |
233 | ret = platform_device_add_data(sharpsl_pcmcia_device, |
234 | &sharpsl_pcmcia_ops, sizeof(sharpsl_pcmcia_ops)); | |
235 | if (ret == 0) { | |
236 | sharpsl_pcmcia_device->dev.parent = platform_scoop_config->devs[0].dev; | |
237 | ret = platform_device_add(sharpsl_pcmcia_device); | |
238 | } | |
1da177e4 | 239 | |
1da177e4 | 240 | if (ret) |
b016450f | 241 | platform_device_put(sharpsl_pcmcia_device); |
1da177e4 LT |
242 | |
243 | return ret; | |
244 | } | |
245 | ||
246 | static void __exit sharpsl_pcmcia_exit(void) | |
247 | { | |
1da177e4 LT |
248 | platform_device_unregister(sharpsl_pcmcia_device); |
249 | } | |
250 | ||
f36598ae | 251 | fs_initcall(sharpsl_pcmcia_init); |
1da177e4 | 252 | module_exit(sharpsl_pcmcia_exit); |
77bb86a1 | 253 | #endif |
1da177e4 LT |
254 | |
255 | MODULE_DESCRIPTION("Sharp SL Series PCMCIA Support"); | |
256 | MODULE_LICENSE("GPL"); | |
43cc71ee | 257 | MODULE_ALIAS("platform:pxa2xx-pcmcia"); |