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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/drivers/pcmcia/sa1111_generic.c
3 *
4 * We implement the generic parts of a SA1111 PCMCIA driver. This
5 * basically means we handle everything except controlling the
6 * power. Power is machine specific...
7 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07008#include <linux/module.h>
9#include <linux/kernel.h>
10#include <linux/ioport.h>
11#include <linux/device.h>
12#include <linux/interrupt.h>
13#include <linux/init.h>
Russell King99730222009-03-25 10:21:35 +000014#include <linux/io.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090015#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070016
17#include <pcmcia/ss.h>
18
Russell Kinga09e64f2008-08-05 16:14:15 +010019#include <mach/hardware.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070020#include <asm/hardware/sa1111.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070021#include <asm/irq.h>
22
23#include "sa1111_generic.h"
24
Russell Kingea8c00a2012-01-16 11:32:09 +000025/*
26 * These are offsets from the above base.
27 */
28#define PCCR 0x0000
29#define PCSSR 0x0004
30#define PCSR 0x0008
31
32#define PCSR_S0_READY (1<<0)
33#define PCSR_S1_READY (1<<1)
34#define PCSR_S0_DETECT (1<<2)
35#define PCSR_S1_DETECT (1<<3)
36#define PCSR_S0_VS1 (1<<4)
37#define PCSR_S0_VS2 (1<<5)
38#define PCSR_S1_VS1 (1<<6)
39#define PCSR_S1_VS2 (1<<7)
40#define PCSR_S0_WP (1<<8)
41#define PCSR_S1_WP (1<<9)
42#define PCSR_S0_BVD1 (1<<10)
43#define PCSR_S0_BVD2 (1<<11)
44#define PCSR_S1_BVD1 (1<<12)
45#define PCSR_S1_BVD2 (1<<13)
46
47#define PCCR_S0_RST (1<<0)
48#define PCCR_S1_RST (1<<1)
49#define PCCR_S0_FLT (1<<2)
50#define PCCR_S1_FLT (1<<3)
51#define PCCR_S0_PWAITEN (1<<4)
52#define PCCR_S1_PWAITEN (1<<5)
53#define PCCR_S0_PSE (1<<6)
54#define PCCR_S1_PSE (1<<7)
55
56#define PCSSR_S0_SLEEP (1<<0)
57#define PCSSR_S1_SLEEP (1<<1)
58
Eric Miao08fa1592009-12-26 12:32:38 +080059#define IDX_IRQ_S0_READY_NINT (0)
60#define IDX_IRQ_S0_CD_VALID (1)
61#define IDX_IRQ_S0_BVD1_STSCHG (2)
62#define IDX_IRQ_S1_READY_NINT (3)
63#define IDX_IRQ_S1_CD_VALID (4)
64#define IDX_IRQ_S1_BVD1_STSCHG (5)
65
Linus Torvalds1da177e2005-04-16 15:20:36 -070066void sa1111_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
67{
Russell King - ARM Linux701a5dc2009-03-29 19:42:44 +010068 struct sa1111_pcmcia_socket *s = to_skt(skt);
Russell Kingea8c00a2012-01-16 11:32:09 +000069 unsigned long status = sa1111_readl(s->dev->mapbase + PCSR);
Linus Torvalds1da177e2005-04-16 15:20:36 -070070
71 switch (skt->nr) {
72 case 0:
73 state->detect = status & PCSR_S0_DETECT ? 0 : 1;
74 state->ready = status & PCSR_S0_READY ? 1 : 0;
75 state->bvd1 = status & PCSR_S0_BVD1 ? 1 : 0;
76 state->bvd2 = status & PCSR_S0_BVD2 ? 1 : 0;
77 state->wrprot = status & PCSR_S0_WP ? 1 : 0;
78 state->vs_3v = status & PCSR_S0_VS1 ? 0 : 1;
79 state->vs_Xv = status & PCSR_S0_VS2 ? 0 : 1;
80 break;
81
82 case 1:
83 state->detect = status & PCSR_S1_DETECT ? 0 : 1;
84 state->ready = status & PCSR_S1_READY ? 1 : 0;
85 state->bvd1 = status & PCSR_S1_BVD1 ? 1 : 0;
86 state->bvd2 = status & PCSR_S1_BVD2 ? 1 : 0;
87 state->wrprot = status & PCSR_S1_WP ? 1 : 0;
88 state->vs_3v = status & PCSR_S1_VS1 ? 0 : 1;
89 state->vs_Xv = status & PCSR_S1_VS2 ? 0 : 1;
90 break;
91 }
92}
93
94int sa1111_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
95{
Russell King - ARM Linux701a5dc2009-03-29 19:42:44 +010096 struct sa1111_pcmcia_socket *s = to_skt(skt);
Linus Torvalds1da177e2005-04-16 15:20:36 -070097 unsigned int pccr_skt_mask, pccr_set_mask, val;
98 unsigned long flags;
99
100 switch (skt->nr) {
101 case 0:
102 pccr_skt_mask = PCCR_S0_RST|PCCR_S0_FLT|PCCR_S0_PWAITEN|PCCR_S0_PSE;
103 break;
104
105 case 1:
106 pccr_skt_mask = PCCR_S1_RST|PCCR_S1_FLT|PCCR_S1_PWAITEN|PCCR_S1_PSE;
107 break;
108
109 default:
110 return -1;
111 }
112
113 pccr_set_mask = 0;
114
115 if (state->Vcc != 0)
116 pccr_set_mask |= PCCR_S0_PWAITEN|PCCR_S1_PWAITEN;
117 if (state->Vcc == 50)
118 pccr_set_mask |= PCCR_S0_PSE|PCCR_S1_PSE;
119 if (state->flags & SS_RESET)
120 pccr_set_mask |= PCCR_S0_RST|PCCR_S1_RST;
121 if (state->flags & SS_OUTPUT_ENA)
122 pccr_set_mask |= PCCR_S0_FLT|PCCR_S1_FLT;
123
124 local_irq_save(flags);
Russell Kingea8c00a2012-01-16 11:32:09 +0000125 val = sa1111_readl(s->dev->mapbase + PCCR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126 val &= ~pccr_skt_mask;
127 val |= pccr_set_mask & pccr_skt_mask;
Russell Kingea8c00a2012-01-16 11:32:09 +0000128 sa1111_writel(val, s->dev->mapbase + PCCR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129 local_irq_restore(flags);
130
131 return 0;
132}
133
Russell King - ARM Linux701a5dc2009-03-29 19:42:44 +0100134int sa1111_pcmcia_add(struct sa1111_dev *dev, struct pcmcia_low_level *ops,
135 int (*add)(struct soc_pcmcia_socket *))
136{
137 struct sa1111_pcmcia_socket *s;
Russell King321ae962015-03-26 10:46:35 +0000138 struct clk *clk;
Russell King - ARM Linux701a5dc2009-03-29 19:42:44 +0100139 int i, ret = 0;
140
Russell King321ae962015-03-26 10:46:35 +0000141 clk = devm_clk_get(&dev->dev, NULL);
142 if (IS_ERR(clk))
143 return PTR_ERR(clk);
144
Russell King - ARM Linuxdabd1462009-03-29 22:35:11 +0100145 ops->socket_state = sa1111_pcmcia_socket_state;
Russell King - ARM Linuxdabd1462009-03-29 22:35:11 +0100146
Russell King - ARM Linux701a5dc2009-03-29 19:42:44 +0100147 for (i = 0; i < ops->nr; i++) {
148 s = kzalloc(sizeof(*s), GFP_KERNEL);
149 if (!s)
150 return -ENOMEM;
151
152 s->soc.nr = ops->first + i;
Russell King321ae962015-03-26 10:46:35 +0000153 s->soc.clk = clk;
154
Russell Kinge0d21172011-12-19 14:07:31 +0000155 soc_pcmcia_init_one(&s->soc, ops, &dev->dev);
Russell King - ARM Linux701a5dc2009-03-29 19:42:44 +0100156 s->dev = dev;
Russell King81f33c62011-12-19 23:04:22 +0000157 if (s->soc.nr) {
158 s->soc.socket.pci_irq = dev->irq[IDX_IRQ_S1_READY_NINT];
159 s->soc.stat[SOC_STAT_CD].irq = dev->irq[IDX_IRQ_S1_CD_VALID];
160 s->soc.stat[SOC_STAT_CD].name = "SA1111 CF card detect";
161 s->soc.stat[SOC_STAT_BVD1].irq = dev->irq[IDX_IRQ_S1_BVD1_STSCHG];
162 s->soc.stat[SOC_STAT_BVD1].name = "SA1111 CF BVD1";
163 } else {
164 s->soc.socket.pci_irq = dev->irq[IDX_IRQ_S0_READY_NINT];
165 s->soc.stat[SOC_STAT_CD].irq = dev->irq[IDX_IRQ_S0_CD_VALID];
166 s->soc.stat[SOC_STAT_CD].name = "SA1111 PCMCIA card detect";
167 s->soc.stat[SOC_STAT_BVD1].irq = dev->irq[IDX_IRQ_S0_BVD1_STSCHG];
168 s->soc.stat[SOC_STAT_BVD1].name = "SA1111 PCMCIA BVD1";
169 }
Russell King - ARM Linux701a5dc2009-03-29 19:42:44 +0100170
171 ret = add(&s->soc);
172 if (ret == 0) {
173 s->next = dev_get_drvdata(&dev->dev);
174 dev_set_drvdata(&dev->dev, s);
175 } else
176 kfree(s);
177 }
178
179 return ret;
180}
181
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182static int pcmcia_probe(struct sa1111_dev *dev)
183{
Russell Kingf339ab32005-10-28 14:29:43 +0100184 void __iomem *base;
Russell Kingae99ddb2012-01-26 13:25:47 +0000185 int ret;
186
187 ret = sa1111_enable_device(dev);
188 if (ret)
189 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190
Russell King - ARM Linux701a5dc2009-03-29 19:42:44 +0100191 dev_set_drvdata(&dev->dev, NULL);
192
Russell Kingae99ddb2012-01-26 13:25:47 +0000193 if (!request_mem_region(dev->res.start, 512, SA1111_DRIVER_NAME(dev))) {
194 sa1111_disable_device(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195 return -EBUSY;
Russell Kingae99ddb2012-01-26 13:25:47 +0000196 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197
198 base = dev->mapbase;
199
200 /*
201 * Initialise the suspend state.
202 */
Russell Kingea8c00a2012-01-16 11:32:09 +0000203 sa1111_writel(PCSSR_S0_SLEEP | PCSSR_S1_SLEEP, base + PCSSR);
204 sa1111_writel(PCCR_S0_FLT | PCCR_S1_FLT, base + PCCR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205
206#ifdef CONFIG_SA1100_BADGE4
Dmitry Eremin-Solenikovcfd1f002014-10-21 00:29:23 +0400207 pcmcia_badge4_init(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208#endif
209#ifdef CONFIG_SA1100_JORNADA720
Dmitry Eremin-Solenikov4bc9ef22014-10-21 00:29:24 +0400210 pcmcia_jornada720_init(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211#endif
212#ifdef CONFIG_ARCH_LUBBOCK
213 pcmcia_lubbock_init(dev);
214#endif
215#ifdef CONFIG_ASSABET_NEPONSET
216 pcmcia_neponset_init(dev);
217#endif
218 return 0;
219}
220
Bill Pembertone765a022012-11-19 13:26:05 -0500221static int pcmcia_remove(struct sa1111_dev *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222{
Russell King - ARM Linux701a5dc2009-03-29 19:42:44 +0100223 struct sa1111_pcmcia_socket *next, *s = dev_get_drvdata(&dev->dev);
Russell King - ARM Linuxbe854582009-03-26 22:21:18 +0000224
225 dev_set_drvdata(&dev->dev, NULL);
226
Russell King171cf942012-01-24 21:33:26 +0000227 for (; s; s = next) {
228 next = s->next;
Russell King - ARM Linux701a5dc2009-03-29 19:42:44 +0100229 soc_pcmcia_remove_one(&s->soc);
230 kfree(s);
231 }
Russell King - ARM Linuxbe854582009-03-26 22:21:18 +0000232
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233 release_mem_region(dev->res.start, 512);
Russell Kingae99ddb2012-01-26 13:25:47 +0000234 sa1111_disable_device(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235 return 0;
236}
237
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238static struct sa1111_driver pcmcia_driver = {
239 .drv = {
240 .name = "sa1111-pcmcia",
241 },
242 .devid = SA1111_DEVID_PCMCIA,
243 .probe = pcmcia_probe,
Bill Pemberton96364e32012-11-19 13:20:38 -0500244 .remove = pcmcia_remove,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245};
246
247static int __init sa1111_drv_pcmcia_init(void)
248{
249 return sa1111_driver_register(&pcmcia_driver);
250}
251
252static void __exit sa1111_drv_pcmcia_exit(void)
253{
254 sa1111_driver_unregister(&pcmcia_driver);
255}
256
Richard Purdief36598ae2005-09-03 19:39:25 +0100257fs_initcall(sa1111_drv_pcmcia_init);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258module_exit(sa1111_drv_pcmcia_exit);
259
260MODULE_DESCRIPTION("SA1111 PCMCIA card socket driver");
261MODULE_LICENSE("GPL");