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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 LT |
2 | /* |
3 | * drivers/pcmcia/sa1100_simpad.c | |
4 | * | |
5 | * PCMCIA implementation routines for simpad | |
6 | * | |
7 | */ | |
8 | #include <linux/module.h> | |
9 | #include <linux/kernel.h> | |
1da177e4 LT |
10 | #include <linux/device.h> |
11 | #include <linux/init.h> | |
12 | ||
a09e64fb | 13 | #include <mach/hardware.h> |
1da177e4 LT |
14 | #include <asm/mach-types.h> |
15 | #include <asm/irq.h> | |
a09e64fb | 16 | #include <mach/simpad.h> |
1da177e4 LT |
17 | #include "sa1100_generic.h" |
18 | ||
1da177e4 LT |
19 | static int simpad_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
20 | { | |
21 | ||
de0bc0d1 | 22 | simpad_clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1); |
1da177e4 | 23 | |
b1d8a5f9 RK |
24 | skt->stat[SOC_STAT_CD].gpio = GPIO_CF_CD; |
25 | skt->stat[SOC_STAT_CD].name = "CF_CD"; | |
26 | skt->stat[SOC_STAT_RDY].gpio = GPIO_CF_IRQ; | |
27 | skt->stat[SOC_STAT_RDY].name = "CF_RDY"; | |
1da177e4 | 28 | |
b1d8a5f9 | 29 | return 0; |
1da177e4 LT |
30 | } |
31 | ||
32 | static void simpad_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) | |
33 | { | |
1da177e4 | 34 | /* Disable CF bus: */ |
de0bc0d1 JF |
35 | /*simpad_set_cs3_bit(PCMCIA_BUFF_DIS);*/ |
36 | simpad_clear_cs3_bit(PCMCIA_RESET); | |
1da177e4 LT |
37 | } |
38 | ||
39 | static void | |
40 | simpad_pcmcia_socket_state(struct soc_pcmcia_socket *skt, | |
41 | struct pcmcia_state *state) | |
42 | { | |
de0bc0d1 | 43 | long cs3reg = simpad_get_cs3_ro(); |
1da177e4 | 44 | |
b1d8a5f9 RK |
45 | /* the detect signal is inverted - fix that up here */ |
46 | state->detect = !state->detect; | |
47 | ||
de0bc0d1 JF |
48 | state->bvd1 = 1; /* Might be cs3reg & PCMCIA_BVD1 */ |
49 | state->bvd2 = 1; /* Might be cs3reg & PCMCIA_BVD2 */ | |
de0bc0d1 JF |
50 | |
51 | if ((cs3reg & (PCMCIA_VS1|PCMCIA_VS2)) == | |
52 | (PCMCIA_VS1|PCMCIA_VS2)) { | |
1da177e4 LT |
53 | state->vs_3v=0; |
54 | state->vs_Xv=0; | |
55 | } else { | |
56 | state->vs_3v=1; | |
57 | state->vs_Xv=0; | |
58 | } | |
59 | } | |
60 | ||
61 | static int | |
62 | simpad_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, | |
63 | const socket_state_t *state) | |
64 | { | |
65 | unsigned long flags; | |
66 | ||
67 | local_irq_save(flags); | |
68 | ||
69 | /* Murphy: see table of MIC2562a-1 */ | |
70 | switch (state->Vcc) { | |
71 | case 0: | |
de0bc0d1 | 72 | simpad_clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1); |
1da177e4 LT |
73 | break; |
74 | ||
75 | case 33: | |
de0bc0d1 JF |
76 | simpad_clear_cs3_bit(VCC_3V_EN|EN1); |
77 | simpad_set_cs3_bit(VCC_5V_EN|EN0); | |
1da177e4 LT |
78 | break; |
79 | ||
80 | case 50: | |
de0bc0d1 JF |
81 | simpad_clear_cs3_bit(VCC_5V_EN|EN1); |
82 | simpad_set_cs3_bit(VCC_3V_EN|EN0); | |
1da177e4 LT |
83 | break; |
84 | ||
85 | default: | |
86 | printk(KERN_ERR "%s(): unrecognized Vcc %u\n", | |
2e11cb4c | 87 | __func__, state->Vcc); |
de0bc0d1 | 88 | simpad_clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1); |
1da177e4 LT |
89 | local_irq_restore(flags); |
90 | return -1; | |
91 | } | |
92 | ||
93 | ||
94 | local_irq_restore(flags); | |
95 | ||
96 | return 0; | |
97 | } | |
98 | ||
1da177e4 LT |
99 | static void simpad_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) |
100 | { | |
de0bc0d1 | 101 | simpad_set_cs3_bit(PCMCIA_RESET); |
1da177e4 LT |
102 | } |
103 | ||
104 | static struct pcmcia_low_level simpad_pcmcia_ops = { | |
105 | .owner = THIS_MODULE, | |
106 | .hw_init = simpad_pcmcia_hw_init, | |
107 | .hw_shutdown = simpad_pcmcia_hw_shutdown, | |
108 | .socket_state = simpad_pcmcia_socket_state, | |
109 | .configure_socket = simpad_pcmcia_configure_socket, | |
1da177e4 LT |
110 | .socket_suspend = simpad_pcmcia_socket_suspend, |
111 | }; | |
112 | ||
34cdf25a | 113 | int pcmcia_simpad_init(struct device *dev) |
1da177e4 LT |
114 | { |
115 | int ret = -ENODEV; | |
116 | ||
117 | if (machine_is_simpad()) | |
118 | ret = sa11xx_drv_pcmcia_probe(dev, &simpad_pcmcia_ops, 1, 1); | |
119 | ||
120 | return ret; | |
121 | } |