1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * drivers/pcmcia/sa1100_simpad.c
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * PCMCIA implementation routines for simpad
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun */
8*4882a593Smuzhiyun #include <linux/module.h>
9*4882a593Smuzhiyun #include <linux/kernel.h>
10*4882a593Smuzhiyun #include <linux/device.h>
11*4882a593Smuzhiyun #include <linux/init.h>
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun #include <mach/hardware.h>
14*4882a593Smuzhiyun #include <asm/mach-types.h>
15*4882a593Smuzhiyun #include <mach/simpad.h>
16*4882a593Smuzhiyun #include "sa1100_generic.h"
17*4882a593Smuzhiyun
simpad_pcmcia_hw_init(struct soc_pcmcia_socket * skt)18*4882a593Smuzhiyun static int simpad_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
19*4882a593Smuzhiyun {
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun simpad_clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1);
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun skt->stat[SOC_STAT_CD].name = "cf-detect";
24*4882a593Smuzhiyun skt->stat[SOC_STAT_RDY].name = "cf-ready";
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun return soc_pcmcia_request_gpiods(skt);
27*4882a593Smuzhiyun }
28*4882a593Smuzhiyun
simpad_pcmcia_hw_shutdown(struct soc_pcmcia_socket * skt)29*4882a593Smuzhiyun static void simpad_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
30*4882a593Smuzhiyun {
31*4882a593Smuzhiyun /* Disable CF bus: */
32*4882a593Smuzhiyun /*simpad_set_cs3_bit(PCMCIA_BUFF_DIS);*/
33*4882a593Smuzhiyun simpad_clear_cs3_bit(PCMCIA_RESET);
34*4882a593Smuzhiyun }
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun static void
simpad_pcmcia_socket_state(struct soc_pcmcia_socket * skt,struct pcmcia_state * state)37*4882a593Smuzhiyun simpad_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
38*4882a593Smuzhiyun struct pcmcia_state *state)
39*4882a593Smuzhiyun {
40*4882a593Smuzhiyun long cs3reg = simpad_get_cs3_ro();
41*4882a593Smuzhiyun
42*4882a593Smuzhiyun /* bvd1 might be cs3reg & PCMCIA_BVD1 */
43*4882a593Smuzhiyun /* bvd2 might be cs3reg & PCMCIA_BVD2 */
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun if ((cs3reg & (PCMCIA_VS1|PCMCIA_VS2)) ==
46*4882a593Smuzhiyun (PCMCIA_VS1|PCMCIA_VS2)) {
47*4882a593Smuzhiyun state->vs_3v=0;
48*4882a593Smuzhiyun state->vs_Xv=0;
49*4882a593Smuzhiyun } else {
50*4882a593Smuzhiyun state->vs_3v=1;
51*4882a593Smuzhiyun state->vs_Xv=0;
52*4882a593Smuzhiyun }
53*4882a593Smuzhiyun }
54*4882a593Smuzhiyun
55*4882a593Smuzhiyun static int
simpad_pcmcia_configure_socket(struct soc_pcmcia_socket * skt,const socket_state_t * state)56*4882a593Smuzhiyun simpad_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
57*4882a593Smuzhiyun const socket_state_t *state)
58*4882a593Smuzhiyun {
59*4882a593Smuzhiyun unsigned long flags;
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun local_irq_save(flags);
62*4882a593Smuzhiyun
63*4882a593Smuzhiyun /* Murphy: see table of MIC2562a-1 */
64*4882a593Smuzhiyun switch (state->Vcc) {
65*4882a593Smuzhiyun case 0:
66*4882a593Smuzhiyun simpad_clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1);
67*4882a593Smuzhiyun break;
68*4882a593Smuzhiyun
69*4882a593Smuzhiyun case 33:
70*4882a593Smuzhiyun simpad_clear_cs3_bit(VCC_3V_EN|EN1);
71*4882a593Smuzhiyun simpad_set_cs3_bit(VCC_5V_EN|EN0);
72*4882a593Smuzhiyun break;
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun case 50:
75*4882a593Smuzhiyun simpad_clear_cs3_bit(VCC_5V_EN|EN1);
76*4882a593Smuzhiyun simpad_set_cs3_bit(VCC_3V_EN|EN0);
77*4882a593Smuzhiyun break;
78*4882a593Smuzhiyun
79*4882a593Smuzhiyun default:
80*4882a593Smuzhiyun printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
81*4882a593Smuzhiyun __func__, state->Vcc);
82*4882a593Smuzhiyun simpad_clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1);
83*4882a593Smuzhiyun local_irq_restore(flags);
84*4882a593Smuzhiyun return -1;
85*4882a593Smuzhiyun }
86*4882a593Smuzhiyun
87*4882a593Smuzhiyun
88*4882a593Smuzhiyun local_irq_restore(flags);
89*4882a593Smuzhiyun
90*4882a593Smuzhiyun return 0;
91*4882a593Smuzhiyun }
92*4882a593Smuzhiyun
simpad_pcmcia_socket_suspend(struct soc_pcmcia_socket * skt)93*4882a593Smuzhiyun static void simpad_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
94*4882a593Smuzhiyun {
95*4882a593Smuzhiyun simpad_set_cs3_bit(PCMCIA_RESET);
96*4882a593Smuzhiyun }
97*4882a593Smuzhiyun
98*4882a593Smuzhiyun static struct pcmcia_low_level simpad_pcmcia_ops = {
99*4882a593Smuzhiyun .owner = THIS_MODULE,
100*4882a593Smuzhiyun .hw_init = simpad_pcmcia_hw_init,
101*4882a593Smuzhiyun .hw_shutdown = simpad_pcmcia_hw_shutdown,
102*4882a593Smuzhiyun .socket_state = simpad_pcmcia_socket_state,
103*4882a593Smuzhiyun .configure_socket = simpad_pcmcia_configure_socket,
104*4882a593Smuzhiyun .socket_suspend = simpad_pcmcia_socket_suspend,
105*4882a593Smuzhiyun };
106*4882a593Smuzhiyun
pcmcia_simpad_init(struct device * dev)107*4882a593Smuzhiyun int pcmcia_simpad_init(struct device *dev)
108*4882a593Smuzhiyun {
109*4882a593Smuzhiyun int ret = -ENODEV;
110*4882a593Smuzhiyun
111*4882a593Smuzhiyun if (machine_is_simpad())
112*4882a593Smuzhiyun ret = sa11xx_drv_pcmcia_probe(dev, &simpad_pcmcia_ops, 1, 1);
113*4882a593Smuzhiyun
114*4882a593Smuzhiyun return ret;
115*4882a593Smuzhiyun }
116