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1// SPDX-License-Identifier: GPL-2.0-only
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
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>
15#include <linux/platform_device.h>
16
17#include <asm/mach-types.h>
18#include <asm/irq.h>
19#include <asm/hardware/scoop.h>
20
21#include <pcmcia/soc_common.h>
22
23#define NO_KEEP_VS 0x0001
24#define SCOOP_DEV platform_scoop_config->devs
25
26static void sharpsl_pcmcia_init_reset(struct soc_pcmcia_socket *skt)
27{
28 struct scoop_pcmcia_dev *scoopdev = &SCOOP_DEV[skt->nr];
29
30 reset_scoop(scoopdev->dev);
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
38 scoopdev->keep_vs = NO_KEEP_VS;
39 scoopdev->keep_rd = 0;
40}
41
42static int sharpsl_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
43{
44 if (SCOOP_DEV[skt->nr].cd_irq >= 0) {
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;
47 }
48
49 skt->socket.pci_irq = SCOOP_DEV[skt->nr].irq;
50
51 return 0;
52}
53
54static void sharpsl_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
55 struct pcmcia_state *state)
56{
57 unsigned short cpr, csr;
58 struct device *scoop = SCOOP_DEV[skt->nr].dev;
59
60 cpr = read_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_CPR);
61
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);
66 if (csr & 0x0004) {
67 /* card eject */
68 write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
69 SCOOP_DEV[skt->nr].keep_vs = NO_KEEP_VS;
70 }
71 else if (!(SCOOP_DEV[skt->nr].keep_vs & NO_KEEP_VS)) {
72 /* keep vs1,vs2 */
73 write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
74 csr |= SCOOP_DEV[skt->nr].keep_vs;
75 }
76 else if (cpr & 0x0003) {
77 /* power on */
78 write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
79 SCOOP_DEV[skt->nr].keep_vs = (csr & 0x00C0);
80 }
81 else {
82 /* card detect */
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 }
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 }
101}
102
103
104static int sharpsl_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
105 const socket_state_t *state)
106{
107 unsigned long flags;
108 struct device *scoop = SCOOP_DEV[skt->nr].dev;
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
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;
132
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 }
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)) {
151 SCOOP_DEV[skt->nr].keep_rd = 0;
152 } else if (!SCOOP_DEV[skt->nr].keep_rd) {
153 if (nccr & 0x0080)
154 SCOOP_DEV[skt->nr].keep_rd = 1;
155 else
156 nccr |= 0x0080;
157 }
158
159 if (mcr != nmcr)
160 write_scoop_reg(scoop, SCOOP_MCR, nmcr);
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 }
167 if (ccr != nccr)
168 write_scoop_reg(scoop, SCOOP_CCR, nccr);
169 if (imr != nimr)
170 write_scoop_reg(scoop, SCOOP_IMR, nimr);
171
172 local_irq_restore(flags);
173
174 return 0;
175}
176
177static void sharpsl_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
178{
179 sharpsl_pcmcia_init_reset(skt);
180
181 /* Enable interrupt */
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;
185}
186
187static void sharpsl_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
188{
189 sharpsl_pcmcia_init_reset(skt);
190}
191
192static struct pcmcia_low_level sharpsl_pcmcia_ops = {
193 .owner = THIS_MODULE,
194 .hw_init = sharpsl_pcmcia_hw_init,
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,
201};
202
203#ifdef CONFIG_SA1100_COLLIE
204#include "sa11xx_base.h"
205
206int pcmcia_collie_init(struct device *dev)
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
218static struct platform_device *sharpsl_pcmcia_device;
219
220static int __init sharpsl_pcmcia_init(void)
221{
222 int ret;
223
224 if (!platform_scoop_config)
225 return -ENODEV;
226
227 sharpsl_pcmcia_ops.nr = platform_scoop_config->num_devs;
228 sharpsl_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
229
230 if (!sharpsl_pcmcia_device)
231 return -ENOMEM;
232
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 }
239
240 if (ret)
241 platform_device_put(sharpsl_pcmcia_device);
242
243 return ret;
244}
245
246static void __exit sharpsl_pcmcia_exit(void)
247{
248 platform_device_unregister(sharpsl_pcmcia_device);
249}
250
251fs_initcall(sharpsl_pcmcia_init);
252module_exit(sharpsl_pcmcia_exit);
253#endif
254
255MODULE_DESCRIPTION("Sharp SL Series PCMCIA Support");
256MODULE_LICENSE("GPL");
257MODULE_ALIAS("platform:pxa2xx-pcmcia");
1// SPDX-License-Identifier: GPL-2.0-only
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
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>
15#include <linux/platform_device.h>
16
17#include <asm/mach-types.h>
18#include <asm/irq.h>
19#include <asm/hardware/scoop.h>
20
21#include <pcmcia/soc_common.h>
22
23#define NO_KEEP_VS 0x0001
24#define SCOOP_DEV platform_scoop_config->devs
25
26static void sharpsl_pcmcia_init_reset(struct soc_pcmcia_socket *skt)
27{
28 struct scoop_pcmcia_dev *scoopdev = &SCOOP_DEV[skt->nr];
29
30 reset_scoop(scoopdev->dev);
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
38 scoopdev->keep_vs = NO_KEEP_VS;
39 scoopdev->keep_rd = 0;
40}
41
42static int sharpsl_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
43{
44 if (SCOOP_DEV[skt->nr].cd_irq >= 0) {
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;
47 }
48
49 skt->socket.pci_irq = SCOOP_DEV[skt->nr].irq;
50
51 return 0;
52}
53
54static void sharpsl_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
55 struct pcmcia_state *state)
56{
57 unsigned short cpr, csr;
58 struct device *scoop = SCOOP_DEV[skt->nr].dev;
59
60 cpr = read_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_CPR);
61
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);
66 if (csr & 0x0004) {
67 /* card eject */
68 write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
69 SCOOP_DEV[skt->nr].keep_vs = NO_KEEP_VS;
70 }
71 else if (!(SCOOP_DEV[skt->nr].keep_vs & NO_KEEP_VS)) {
72 /* keep vs1,vs2 */
73 write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
74 csr |= SCOOP_DEV[skt->nr].keep_vs;
75 }
76 else if (cpr & 0x0003) {
77 /* power on */
78 write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
79 SCOOP_DEV[skt->nr].keep_vs = (csr & 0x00C0);
80 }
81 else {
82 /* card detect */
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 }
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 }
101}
102
103
104static int sharpsl_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
105 const socket_state_t *state)
106{
107 unsigned long flags;
108 struct device *scoop = SCOOP_DEV[skt->nr].dev;
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
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;
132
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 }
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)) {
151 SCOOP_DEV[skt->nr].keep_rd = 0;
152 } else if (!SCOOP_DEV[skt->nr].keep_rd) {
153 if (nccr & 0x0080)
154 SCOOP_DEV[skt->nr].keep_rd = 1;
155 else
156 nccr |= 0x0080;
157 }
158
159 if (mcr != nmcr)
160 write_scoop_reg(scoop, SCOOP_MCR, nmcr);
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 }
167 if (ccr != nccr)
168 write_scoop_reg(scoop, SCOOP_CCR, nccr);
169 if (imr != nimr)
170 write_scoop_reg(scoop, SCOOP_IMR, nimr);
171
172 local_irq_restore(flags);
173
174 return 0;
175}
176
177static void sharpsl_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
178{
179 sharpsl_pcmcia_init_reset(skt);
180
181 /* Enable interrupt */
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;
185}
186
187static void sharpsl_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
188{
189 sharpsl_pcmcia_init_reset(skt);
190}
191
192static struct pcmcia_low_level sharpsl_pcmcia_ops = {
193 .owner = THIS_MODULE,
194 .hw_init = sharpsl_pcmcia_hw_init,
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,
201};
202
203#ifdef CONFIG_SA1100_COLLIE
204#include "sa11xx_base.h"
205
206int pcmcia_collie_init(struct device *dev)
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
218static struct platform_device *sharpsl_pcmcia_device;
219
220static int __init sharpsl_pcmcia_init(void)
221{
222 int ret;
223
224 if (!platform_scoop_config)
225 return -ENODEV;
226
227 sharpsl_pcmcia_ops.nr = platform_scoop_config->num_devs;
228 sharpsl_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
229
230 if (!sharpsl_pcmcia_device)
231 return -ENOMEM;
232
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 }
239
240 if (ret)
241 platform_device_put(sharpsl_pcmcia_device);
242
243 return ret;
244}
245
246static void __exit sharpsl_pcmcia_exit(void)
247{
248 platform_device_unregister(sharpsl_pcmcia_device);
249}
250
251fs_initcall(sharpsl_pcmcia_init);
252module_exit(sharpsl_pcmcia_exit);
253#endif
254
255MODULE_DESCRIPTION("Sharp SL Series PCMCIA Support");
256MODULE_LICENSE("GPL");
257MODULE_ALIAS("platform:pxa2xx-pcmcia");