Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 LT |
2 | /* |
3 | * drivers/pcmcia/sa1100_jornada720.c | |
4 | * | |
5 | * Jornada720 PCMCIA specific routines | |
6 | * | |
7 | */ | |
8 | #include <linux/module.h> | |
1da177e4 LT |
9 | #include <linux/device.h> |
10 | #include <linux/errno.h> | |
b96e6c01 | 11 | #include <linux/gpio/consumer.h> |
1da177e4 | 12 | #include <linux/init.h> |
58409f9d | 13 | #include <linux/io.h> |
1da177e4 | 14 | |
a09e64fb | 15 | #include <mach/hardware.h> |
1da177e4 LT |
16 | #include <asm/mach-types.h> |
17 | ||
18 | #include "sa1111_generic.h" | |
19 | ||
b96e6c01 RK |
20 | /* |
21 | * Socket 0 power: GPIO A0 | |
22 | * Socket 0 3V: GPIO A2 | |
23 | * Socket 1 power: GPIO A1 & GPIO A3 | |
24 | * Socket 1 3V: GPIO A3 | |
25 | * Does Socket 1 3V actually do anything? | |
26 | */ | |
27 | enum { | |
28 | J720_GPIO_PWR, | |
29 | J720_GPIO_3V, | |
30 | J720_GPIO_MAX, | |
31 | }; | |
32 | struct jornada720_data { | |
33 | struct gpio_desc *gpio[J720_GPIO_MAX]; | |
34 | }; | |
35 | ||
36 | static int jornada720_pcmcia_hw_init(struct soc_pcmcia_socket *skt) | |
37 | { | |
38 | struct device *dev = skt->socket.dev.parent; | |
39 | struct jornada720_data *j; | |
40 | ||
41 | j = devm_kzalloc(dev, sizeof(*j), GFP_KERNEL); | |
42 | if (!j) | |
43 | return -ENOMEM; | |
44 | ||
45 | j->gpio[J720_GPIO_PWR] = devm_gpiod_get(dev, skt->nr ? "s1-power" : | |
46 | "s0-power", GPIOD_OUT_LOW); | |
47 | if (IS_ERR(j->gpio[J720_GPIO_PWR])) | |
48 | return PTR_ERR(j->gpio[J720_GPIO_PWR]); | |
49 | ||
50 | j->gpio[J720_GPIO_3V] = devm_gpiod_get(dev, skt->nr ? "s1-3v" : | |
51 | "s0-3v", GPIOD_OUT_LOW); | |
52 | if (IS_ERR(j->gpio[J720_GPIO_3V])) | |
53 | return PTR_ERR(j->gpio[J720_GPIO_3V]); | |
54 | ||
55 | skt->driver_data = j; | |
56 | ||
57 | return 0; | |
58 | } | |
1da177e4 | 59 | |
1da177e4 LT |
60 | static int |
61 | jornada720_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) | |
62 | { | |
b96e6c01 RK |
63 | struct jornada720_data *j = skt->driver_data; |
64 | DECLARE_BITMAP(values, J720_GPIO_MAX) = { 0, }; | |
02e87d1a KE |
65 | int ret; |
66 | ||
67 | printk(KERN_INFO "%s(): config socket %d vcc %d vpp %d\n", __func__, | |
68 | skt->nr, state->Vcc, state->Vpp); | |
69 | ||
70 | switch (skt->nr) { | |
71 | case 0: | |
02e87d1a KE |
72 | switch (state->Vcc) { |
73 | default: | |
74 | case 0: | |
b96e6c01 RK |
75 | __assign_bit(J720_GPIO_PWR, values, 0); |
76 | __assign_bit(J720_GPIO_3V, values, 0); | |
02e87d1a KE |
77 | break; |
78 | case 33: | |
b96e6c01 RK |
79 | __assign_bit(J720_GPIO_PWR, values, 1); |
80 | __assign_bit(J720_GPIO_3V, values, 1); | |
02e87d1a KE |
81 | break; |
82 | case 50: | |
b96e6c01 RK |
83 | __assign_bit(J720_GPIO_PWR, values, 1); |
84 | __assign_bit(J720_GPIO_3V, values, 0); | |
02e87d1a KE |
85 | break; |
86 | } | |
87 | break; | |
88 | ||
89 | case 1: | |
02e87d1a KE |
90 | switch (state->Vcc) { |
91 | default: | |
92 | case 0: | |
b96e6c01 RK |
93 | __assign_bit(J720_GPIO_PWR, values, 0); |
94 | __assign_bit(J720_GPIO_3V, values, 0); | |
02e87d1a KE |
95 | break; |
96 | case 33: | |
02e87d1a | 97 | case 50: |
b96e6c01 RK |
98 | __assign_bit(J720_GPIO_PWR, values, 1); |
99 | __assign_bit(J720_GPIO_3V, values, 1); | |
02e87d1a KE |
100 | break; |
101 | } | |
102 | break; | |
103 | ||
104 | default: | |
105 | return -1; | |
106 | } | |
107 | ||
108 | if (state->Vpp != state->Vcc && state->Vpp != 0) { | |
109 | printk(KERN_ERR "%s(): slot cannot support VPP %u\n", | |
110 | __func__, state->Vpp); | |
111 | return -EPERM; | |
112 | } | |
113 | ||
114 | ret = sa1111_pcmcia_configure_socket(skt, state); | |
e2adbecf | 115 | if (ret == 0) |
b96e6c01 RK |
116 | ret = gpiod_set_array_value_cansleep(J720_GPIO_MAX, j->gpio, |
117 | NULL, values); | |
02e87d1a KE |
118 | |
119 | return ret; | |
1da177e4 LT |
120 | } |
121 | ||
122 | static struct pcmcia_low_level jornada720_pcmcia_ops = { | |
02e87d1a | 123 | .owner = THIS_MODULE, |
b96e6c01 | 124 | .hw_init = jornada720_pcmcia_hw_init, |
02e87d1a | 125 | .configure_socket = jornada720_pcmcia_configure_socket, |
701a5dc0 RKAL |
126 | .first = 0, |
127 | .nr = 2, | |
1da177e4 LT |
128 | }; |
129 | ||
4bc9ef29 | 130 | int pcmcia_jornada720_init(struct sa1111_dev *sadev) |
1da177e4 | 131 | { |
3f8df892 RK |
132 | /* Fixme: why messing around with SA11x0's GPIO1? */ |
133 | GRER |= 0x00000002; | |
dabd1468 | 134 | |
3f8df892 RK |
135 | sa11xx_drv_pcmcia_ops(&jornada720_pcmcia_ops); |
136 | return sa1111_pcmcia_add(sadev, &jornada720_pcmcia_ops, | |
137 | sa11xx_drv_pcmcia_add_one); | |
1da177e4 | 138 | } |