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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 LT |
2 | /* |
3 | * drivers/pcmcia/sa1100_assabet.c | |
4 | * | |
5 | * PCMCIA implementation routines for Assabet | |
6 | * | |
7 | */ | |
8 | #include <linux/module.h> | |
9 | #include <linux/kernel.h> | |
10 | #include <linux/errno.h> | |
11 | #include <linux/interrupt.h> | |
12 | #include <linux/device.h> | |
13 | #include <linux/init.h> | |
03e0092c | 14 | #include <linux/gpio.h> |
1da177e4 | 15 | |
1da177e4 | 16 | #include <asm/mach-types.h> |
a09e64fb | 17 | #include <mach/assabet.h> |
1da177e4 LT |
18 | |
19 | #include "sa1100_generic.h" | |
20 | ||
1da177e4 LT |
21 | static int assabet_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
22 | { | |
03e0092c RK |
23 | skt->stat[SOC_STAT_CD].gpio = ASSABET_GPIO_CF_CD; |
24 | skt->stat[SOC_STAT_CD].name = "CF CD"; | |
25 | skt->stat[SOC_STAT_BVD1].gpio = ASSABET_GPIO_CF_BVD1; | |
26 | skt->stat[SOC_STAT_BVD1].name = "CF BVD1"; | |
27 | skt->stat[SOC_STAT_BVD2].gpio = ASSABET_GPIO_CF_BVD2; | |
28 | skt->stat[SOC_STAT_BVD2].name = "CF BVD2"; | |
29 | skt->stat[SOC_STAT_RDY].gpio = ASSABET_GPIO_CF_IRQ; | |
30 | skt->stat[SOC_STAT_RDY].name = "CF RDY"; | |
1da177e4 | 31 | |
03e0092c | 32 | return 0; |
1da177e4 LT |
33 | } |
34 | ||
1da177e4 LT |
35 | static int |
36 | assabet_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) | |
37 | { | |
38 | unsigned int mask; | |
39 | ||
40 | switch (state->Vcc) { | |
41 | case 0: | |
42 | mask = 0; | |
43 | break; | |
44 | ||
45 | case 50: | |
46 | printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V...\n", | |
2e11cb4c | 47 | __func__); |
1da177e4 LT |
48 | |
49 | case 33: /* Can only apply 3.3V to the CF slot. */ | |
50 | mask = ASSABET_BCR_CF_PWR; | |
51 | break; | |
52 | ||
53 | default: | |
2e11cb4c | 54 | printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __func__, |
1da177e4 LT |
55 | state->Vcc); |
56 | return -1; | |
57 | } | |
58 | ||
03e0092c | 59 | /* Silently ignore Vpp, speaker enable. */ |
1da177e4 LT |
60 | |
61 | if (state->flags & SS_RESET) | |
62 | mask |= ASSABET_BCR_CF_RST; | |
03e0092c RK |
63 | if (!(state->flags & SS_OUTPUT_ENA)) |
64 | mask |= ASSABET_BCR_CF_BUS_OFF; | |
1da177e4 | 65 | |
03e0092c RK |
66 | ASSABET_BCR_frob(ASSABET_BCR_CF_RST | ASSABET_BCR_CF_PWR | |
67 | ASSABET_BCR_CF_BUS_OFF, mask); | |
1da177e4 LT |
68 | |
69 | return 0; | |
70 | } | |
71 | ||
1da177e4 LT |
72 | /* |
73 | * Disable card status IRQs on suspend. | |
74 | */ | |
75 | static void assabet_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) | |
76 | { | |
1da177e4 LT |
77 | /* |
78 | * Tristate the CF bus signals. Also assert CF | |
79 | * reset as per user guide page 4-11. | |
80 | */ | |
81 | ASSABET_BCR_set(ASSABET_BCR_CF_BUS_OFF | ASSABET_BCR_CF_RST); | |
82 | } | |
83 | ||
84 | static struct pcmcia_low_level assabet_pcmcia_ops = { | |
85 | .owner = THIS_MODULE, | |
1da177e4 | 86 | .hw_init = assabet_pcmcia_hw_init, |
a1d05002 | 87 | .socket_state = soc_common_cf_socket_state, |
1da177e4 | 88 | .configure_socket = assabet_pcmcia_configure_socket, |
1da177e4 LT |
89 | .socket_suspend = assabet_pcmcia_socket_suspend, |
90 | }; | |
91 | ||
34cdf25a | 92 | int pcmcia_assabet_init(struct device *dev) |
1da177e4 LT |
93 | { |
94 | int ret = -ENODEV; | |
95 | ||
96 | if (machine_is_assabet() && !machine_has_neponset()) | |
97 | ret = sa11xx_drv_pcmcia_probe(dev, &assabet_pcmcia_ops, 1, 1); | |
98 | ||
99 | return ret; | |
100 | } |