URL https://opencores.org/ocsvn/or1k/or1k/trunk

Subversion Repositories or1k

[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [pcmcia/] [sa1100_yopy.c] - Blame information for rev 1774

Go to most recent revision | Details | Compare with Previous | View Log


/*
 * drivers/pcmcia/sa1100_yopy.c
 *
 * PCMCIA implementation routines for Yopy
 *
 */
#include <linux/kernel.h>
#include <linux/sched.h>
 
#include <asm/hardware.h>
#include <asm/irq.h>
#include "sa1100_generic.h"
 
 
static inline void pcmcia_power(int on) {
        /* high for power up */
        yopy_gpio_set(GPIO_CF_POWER, on);
}
 
static inline void pcmcia_reset(int reset)
{
        /* high for reset */
        yopy_gpio_set(GPIO_CF_RESET, reset);
}
 
static int yopy_pcmcia_init(struct pcmcia_init *init)
{
        int irq, res;
 
        pcmcia_power(0);
        pcmcia_reset(1);
 
        /* Set transition detect */
        set_GPIO_IRQ_edge(GPIO_CF_CD|GPIO_CF_BVD2|GPIO_CF_BVD1,
                          GPIO_NO_EDGES);
        set_GPIO_IRQ_edge( GPIO_CF_IREQ, GPIO_FALLING_EDGE );
 
        /* Register interrupts */
        irq = IRQ_CF_CD;
        res = request_irq(irq, init->handler, SA_INTERRUPT, "CF_CD", NULL);
        if (res < 0) goto irq_err;
        irq = IRQ_CF_BVD2;
        res = request_irq(irq, init->handler, SA_INTERRUPT, "CF_BVD2", NULL);
        if (res < 0) goto irq_err;
        irq = IRQ_CF_BVD1;
        res = request_irq(irq, init->handler, SA_INTERRUPT, "CF_BVD1", NULL);
        if (res < 0) goto irq_err;
 
        return 1;
irq_err:
        printk(KERN_ERR "%s: Request for IRQ %d failed\n", __FUNCTION__, irq);
        return -1;
}
 
static int yopy_pcmcia_shutdown(void)
{
        /* disable IRQs */
        free_irq( IRQ_CF_CD, NULL );
        free_irq( IRQ_CF_BVD2, NULL );
        free_irq( IRQ_CF_BVD1, NULL );
 
        /* Disable CF */
        pcmcia_reset(1);
        pcmcia_power(0);
 
        return 0;
}
 
static int yopy_pcmcia_socket_state(struct pcmcia_state_array *state_array)
{
        unsigned long levels;
 
        if (state_array->size != 1)
                return -1;
 
        memset(state_array->state, 0,
               state_array->size * sizeof(struct pcmcia_state));
 
        levels = GPLR;
 
        state_array->state[0].detect = (levels & GPIO_CF_CD)    ? 0 : 1;
        state_array->state[0].ready  = (levels & GPIO_CF_READY) ? 1 : 0;
        state_array->state[0].bvd1   = (levels & GPIO_CF_BVD1)  ? 1 : 0;
        state_array->state[0].bvd2   = (levels & GPIO_CF_BVD2)  ? 1 : 0;
        state_array->state[0].wrprot = 0; /* Not available on Yopy. */
        state_array->state[0].vs_3v  = 0; /* FIXME Can only apply 3.3V on Yopy. */
        state_array->state[0].vs_Xv  = 0;
 
        return 1;
}
 
static int yopy_pcmcia_get_irq_info(struct pcmcia_irq_info *info)
{
        if (info->sock != 0)
                return -1;
 
        info->irq = IRQ_CF_IREQ;
 
        return 0;
}
 
static int yopy_pcmcia_configure_socket(const struct pcmcia_configure *configure)
{
        if (configure->sock != 0)
                return -1;
 
        switch (configure->vcc) {
        case 0:  /* power off */;
                pcmcia_power(0);
                break;
        case 50:
                printk(KERN_WARNING __FUNCTION__"(): CS asked for 5V, applying 3.3V..\n");
        case 33:
                pcmcia_power(1);
                break;
        default:
                printk(KERN_ERR __FUNCTION__"(): unrecognized Vcc %u\n",
                       configure->vcc);
                return -1;
        }
 
        pcmcia_reset(configure->reset);
 
        /* Silently ignore Vpp, output enable, speaker enable. */
 
        return 0;
}
 
static int yopy_pcmcia_socket_init(int sock)
{
        set_GPIO_IRQ_edge(GPIO_CF_CD|GPIO_CF_BVD2|GPIO_CF_BVD1,
                          GPIO_BOTH_EDGES);
        return 0;
}
 
static int yopy_pcmcia_socket_suspend(int sock)
{
        set_GPIO_IRQ_edge(GPIO_CF_CD|GPIO_CF_BVD2|GPIO_CF_BVD1,
                          GPIO_NO_EDGES);
        return 0;
}
 
struct pcmcia_low_level yopy_pcmcia_ops = {
        init:                   yopy_pcmcia_init,
        shutdown:               yopy_pcmcia_shutdown,
        socket_state:           yopy_pcmcia_socket_state,
        get_irq_info:           yopy_pcmcia_get_irq_info,
        configure_socket:       yopy_pcmcia_configure_socket,
 
        socket_init:            yopy_pcmcia_socket_init,
        socket_suspend:         yopy_pcmcia_socket_suspend,
};

Line No.	Rev	Author	Line
1	1275	phoenix	`/*`
2			`* drivers/pcmcia/sa1100_yopy.c`
3			`*`
4			`* PCMCIA implementation routines for Yopy`
5			`*`
6			`*/`
7			`#include <linux/kernel.h>`
8			`#include <linux/sched.h>`
9
10			`#include <asm/hardware.h>`
11			`#include <asm/irq.h>`
12			`#include "sa1100_generic.h"`
13
14
15			`static inline void pcmcia_power(int on) {`
16			`/* high for power up */`
17			`yopy_gpio_set(GPIO_CF_POWER, on);`
18			`}`
19
20			`static inline void pcmcia_reset(int reset)`
21			`{`
22			`/* high for reset */`
23			`yopy_gpio_set(GPIO_CF_RESET, reset);`
24			`}`
25
26			`static int yopy_pcmcia_init(struct pcmcia_init *init)`
27			`{`
28			`int irq, res;`
29
30			`pcmcia_power(0);`
31			`pcmcia_reset(1);`
32
33			`/* Set transition detect */`
34			`set_GPIO_IRQ_edge(GPIO_CF_CD\|GPIO_CF_BVD2\|GPIO_CF_BVD1,`
35			`GPIO_NO_EDGES);`
36			`set_GPIO_IRQ_edge( GPIO_CF_IREQ, GPIO_FALLING_EDGE );`
37
38			`/* Register interrupts */`
39			`irq = IRQ_CF_CD;`
40			`res = request_irq(irq, init->handler, SA_INTERRUPT, "CF_CD", NULL);`
41			`if (res < 0) goto irq_err;`
42			`irq = IRQ_CF_BVD2;`
43			`res = request_irq(irq, init->handler, SA_INTERRUPT, "CF_BVD2", NULL);`
44			`if (res < 0) goto irq_err;`
45			`irq = IRQ_CF_BVD1;`
46			`res = request_irq(irq, init->handler, SA_INTERRUPT, "CF_BVD1", NULL);`
47			`if (res < 0) goto irq_err;`
48
49			`return 1;`
50			`irq_err:`
51			`printk(KERN_ERR "%s: Request for IRQ %d failed\n", __FUNCTION__, irq);`
52			`return -1;`
53			`}`
54
55			`static int yopy_pcmcia_shutdown(void)`
56			`{`
57			`/* disable IRQs */`
58			`free_irq( IRQ_CF_CD, NULL );`
59			`free_irq( IRQ_CF_BVD2, NULL );`
60			`free_irq( IRQ_CF_BVD1, NULL );`
61
62			`/* Disable CF */`
63			`pcmcia_reset(1);`
64			`pcmcia_power(0);`
65
66			`return 0;`
67			`}`
68
69			`static int yopy_pcmcia_socket_state(struct pcmcia_state_array *state_array)`
70			`{`
71			`unsigned long levels;`
72
73			`if (state_array->size != 1)`
74			`return -1;`
75
76			`memset(state_array->state, 0,`
77			`state_array->size * sizeof(struct pcmcia_state));`
78
79			`levels = GPLR;`
80
81			`state_array->state[0].detect = (levels & GPIO_CF_CD) ? 0 : 1;`
82			`state_array->state[0].ready = (levels & GPIO_CF_READY) ? 1 : 0;`
83			`state_array->state[0].bvd1 = (levels & GPIO_CF_BVD1) ? 1 : 0;`
84			`state_array->state[0].bvd2 = (levels & GPIO_CF_BVD2) ? 1 : 0;`
85			`state_array->state[0].wrprot = 0; /* Not available on Yopy. */`
86			`state_array->state[0].vs_3v = 0; /* FIXME Can only apply 3.3V on Yopy. */`
87			`state_array->state[0].vs_Xv = 0;`
88
89			`return 1;`
90			`}`
91
92			`static int yopy_pcmcia_get_irq_info(struct pcmcia_irq_info *info)`
93			`{`
94			`if (info->sock != 0)`
95			`return -1;`
96
97			`info->irq = IRQ_CF_IREQ;`
98
99			`return 0;`
100			`}`
101
102			`static int yopy_pcmcia_configure_socket(const struct pcmcia_configure *configure)`
103			`{`
104			`if (configure->sock != 0)`
105			`return -1;`
106
107			`switch (configure->vcc) {`
108			`case 0: /* power off */;`
109			`pcmcia_power(0);`
110			`break;`
111			`case 50:`
112			`printk(KERN_WARNING __FUNCTION__"(): CS asked for 5V, applying 3.3V..\n");`
113			`case 33:`
114			`pcmcia_power(1);`
115			`break;`
116			`default:`
117			`printk(KERN_ERR __FUNCTION__"(): unrecognized Vcc %u\n",`
118			`configure->vcc);`
119			`return -1;`
120			`}`
121
122			`pcmcia_reset(configure->reset);`
123
124			`/* Silently ignore Vpp, output enable, speaker enable. */`
125
126			`return 0;`
127			`}`
128
129			`static int yopy_pcmcia_socket_init(int sock)`
130			`{`
131			`set_GPIO_IRQ_edge(GPIO_CF_CD\|GPIO_CF_BVD2\|GPIO_CF_BVD1,`
132			`GPIO_BOTH_EDGES);`
133			`return 0;`
134			`}`
135
136			`static int yopy_pcmcia_socket_suspend(int sock)`
137			`{`
138			`set_GPIO_IRQ_edge(GPIO_CF_CD\|GPIO_CF_BVD2\|GPIO_CF_BVD1,`
139			`GPIO_NO_EDGES);`
140			`return 0;`
141			`}`
142
143			`struct pcmcia_low_level yopy_pcmcia_ops = {`
144			`init: yopy_pcmcia_init,`
145			`shutdown: yopy_pcmcia_shutdown,`
146			`socket_state: yopy_pcmcia_socket_state,`
147			`get_irq_info: yopy_pcmcia_get_irq_info,`
148			`configure_socket: yopy_pcmcia_configure_socket,`
149
150			`socket_init: yopy_pcmcia_socket_init,`
151			`socket_suspend: yopy_pcmcia_socket_suspend,`
152			`};`

Browse

Tools

Subversion Repositories or1k

[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [pcmcia/] [sa1100_yopy.c] - Blame information for rev 1774