File: sa1111_jornada720.c

package info (click to toggle)
linux 4.19.20-1
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 954,852 kB
  • sloc: ansic: 16,749,828; asm: 271,286; makefile: 38,257; sh: 32,808; perl: 27,671; python: 21,022; cpp: 5,063; yacc: 4,648; lex: 2,585; awk: 1,385; ruby: 25; sed: 5
file content (111 lines) | stat: -rw-r--r-- 2,397 bytes parent folder | download | duplicates (7)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
// SPDX-License-Identifier: GPL-2.0
/*
 * drivers/pcmcia/sa1100_jornada720.c
 *
 * Jornada720 PCMCIA specific routines
 *
 */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/io.h>

#include <mach/hardware.h>
#include <asm/hardware/sa1111.h>
#include <asm/mach-types.h>

#include "sa1111_generic.h"

/* Does SOCKET1_3V actually do anything? */
#define SOCKET0_POWER	GPIO_GPIO0
#define SOCKET0_3V	GPIO_GPIO2
#define SOCKET1_POWER	(GPIO_GPIO1 | GPIO_GPIO3)
#define SOCKET1_3V	GPIO_GPIO3

static int
jornada720_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
{
	struct sa1111_pcmcia_socket *s = to_skt(skt);
	unsigned int pa_dwr_mask, pa_dwr_set;
	int ret;

	printk(KERN_INFO "%s(): config socket %d vcc %d vpp %d\n", __func__,
		skt->nr, state->Vcc, state->Vpp);

	switch (skt->nr) {
	case 0:
		pa_dwr_mask = SOCKET0_POWER | SOCKET0_3V;

		switch (state->Vcc) {
		default:
		case  0:
			pa_dwr_set = 0;
			break;
		case 33:
			pa_dwr_set = SOCKET0_POWER | SOCKET0_3V;
			break;
		case 50:
			pa_dwr_set = SOCKET0_POWER;
			break;
		}
		break;

	case 1:
		pa_dwr_mask = SOCKET1_POWER;

		switch (state->Vcc) {
		default:
		case 0:
			pa_dwr_set = 0;
			break;
		case 33:
			pa_dwr_set = SOCKET1_POWER;
			break;
		case 50:
			pa_dwr_set = SOCKET1_POWER;
			break;
		}
		break;

	default:
		return -1;
	}

	if (state->Vpp != state->Vcc && state->Vpp != 0) {
		printk(KERN_ERR "%s(): slot cannot support VPP %u\n",
			__func__, state->Vpp);
		return -EPERM;
	}

	ret = sa1111_pcmcia_configure_socket(skt, state);
	if (ret == 0)
		sa1111_set_io(s->dev, pa_dwr_mask, pa_dwr_set);

	return ret;
}

static struct pcmcia_low_level jornada720_pcmcia_ops = {
	.owner			= THIS_MODULE,
	.configure_socket	= jornada720_pcmcia_configure_socket,
	.first			= 0,
	.nr			= 2,
};

int pcmcia_jornada720_init(struct sa1111_dev *sadev)
{
	unsigned int pin = GPIO_A0 | GPIO_A1 | GPIO_A2 | GPIO_A3;

	/* Fixme: why messing around with SA11x0's GPIO1? */
	GRER |= 0x00000002;

	/* Set GPIO_A<3:1> to be outputs for PCMCIA/CF power controller: */
	sa1111_set_io_dir(sadev, pin, 0, 0);
	sa1111_set_io(sadev, pin, 0);
	sa1111_set_sleep_io(sadev, pin, 0);

	sa11xx_drv_pcmcia_ops(&jornada720_pcmcia_ops);
	return sa1111_pcmcia_add(sadev, &jornada720_pcmcia_ops,
				 sa11xx_drv_pcmcia_add_one);
}