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

Subversion Repositories or1k

[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [pcmcia/] [sa1100_freebird.c] - Blame information for rev 1774

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


/*
 * drivers/pcmcia/sa1100_freebird.c
 *
 * Created by Eric Peng <ericpeng@coventive.com>
 *
 */
#include <linux/kernel.h>
#include <linux/sched.h>
 
#include <asm/hardware.h>
#include <asm/irq.h>
#include "sa1100_generic.h"
 
 
static int freebird_pcmcia_init(struct pcmcia_init *init){
  int irq, res;
 
  /* Enable Linkup CF card */
  LINKUP_PRC = 0xc0;
  mdelay(100);
  LINKUP_PRC = 0xc1;
  mdelay(100);
  LINKUP_PRC = 0xd1;
  mdelay(100);
  LINKUP_PRC = 0xd1;
  mdelay(100);
  LINKUP_PRC = 0xc0;
 
  /* Set transition detect */
  //set_GPIO_IRQ_edge( GPIO_CF_CD|GPIO_CF_BVD2|GPIO_CF_BVD1, GPIO_BOTH_EDGES );
  //set_GPIO_IRQ_edge( GPIO_CF_IRQ, GPIO_FALLING_EDGE );
  set_GPIO_IRQ_edge(GPIO_FREEBIRD_CF_CD|GPIO_FREEBIRD_CF_BVD,GPIO_NO_EDGES);
  set_GPIO_IRQ_edge(GPIO_FREEBIRD_CF_IRQ, GPIO_FALLING_EDGE);
 
  /* Register interrupts */
  irq = IRQ_GPIO_FREEBIRD_CF_CD;
  res = request_irq( irq, init->handler, SA_INTERRUPT, "CF_CD", NULL );
  if( res < 0 ) goto irq_err;
  irq = IRQ_GPIO_FREEBIRD_CF_BVD;
  res = request_irq( irq, init->handler, SA_INTERRUPT, "CF_BVD1", NULL );
  if( res < 0 ) goto irq_err;
 
  /* There's only one slot, but it's "Slot 1": */
  return 2;
 
irq_err:
  printk( KERN_ERR "%s: Request for IRQ %lu failed\n", __FUNCTION__, irq );
  return -1;
}
 
static int freebird_pcmcia_shutdown(void)
{
  /* disable IRQs */
  free_irq( IRQ_GPIO_FREEBIRD_CF_CD, NULL );
  free_irq( IRQ_GPIO_FREEBIRD_CF_BVD, NULL );
 
  /* Disable CF card */
  LINKUP_PRC = 0x40;  /* SSP=1   SOE=0 */
  mdelay(100);
 
  return 0;
}
 
static int freebird_pcmcia_socket_state(struct pcmcia_state_array
                                       *state_array){
  unsigned long levels;
 
  if(state_array->size<2) return -1;
 
  memset(state_array->state, 0,
         (state_array->size)*sizeof(struct pcmcia_state));
 
  levels = LINKUP_PRS;
//printk("LINKUP_PRS=%x \n",levels);
 
  state_array->state[0].detect=
    ((levels & (LINKUP_CD1 | LINKUP_CD2))==0)?1:0;
 
  state_array->state[0].ready=(levels & LINKUP_RDY)?1:0;
 
  state_array->state[0].bvd1=(levels & LINKUP_BVD1)?1:0;
 
  state_array->state[0].bvd2=(levels & LINKUP_BVD2)?1:0;
 
  state_array->state[0].wrprot=0; /* Not available on Assabet. */
 
  state_array->state[0].vs_3v=1;  /* Can only apply 3.3V on Assabet. */
 
  state_array->state[0].vs_Xv=0;
 
  return 1;
}
 
static int freebird_pcmcia_get_irq_info(struct pcmcia_irq_info *info){
 
  if(info->sock>1) return -1;
 
  if(info->sock==0)
    info->irq=IRQ_GPIO_FREEBIRD_CF_IRQ;
 
  return 0;
}
 
static int freebird_pcmcia_configure_socket(const struct pcmcia_configure
                                           *configure)
{
  unsigned long value, flags;
 
  if(configure->sock>1) return -1;
 
  if(configure->sock==1) return 0;
 
  save_flags_cli(flags);
 
  value = 0xc0;   /* SSP=1  SOE=1  CFE=1 */
 
  switch(configure->vcc){
  case 0:
 
    break;
 
  case 50:
    printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V...\n",
           __FUNCTION__);
 
  case 33:  /* Can only apply 3.3V to the CF slot. */
    value |= LINKUP_S1;
    break;
 
  default:
    printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__,
           configure->vcc);
    restore_flags(flags);
    return -1;
  }
 
  if (configure->reset)
  value = (configure->reset) ? (value | LINKUP_RESET) : (value & ~LINKUP_RESET);
 
  /* Silently ignore Vpp, output enable, speaker enable. */
 
  LINKUP_PRC = value;
//printk("LINKUP_PRC=%x\n",value);
  restore_flags(flags);
 
  return 0;
}
 
static int freebird_pcmcia_socket_init(int sock)
{
  set_GPIO_IRQ_edge(GPIO_FREEBIRD_CF_CD|GPIO_FREEBIRD_CF_BVD, GPIO_BOTH_EDGES);
  return 0;
}
 
static int freebird_pcmcia_socket_suspend(int sock)
{
  set_GPIO_IRQ_edge(GPIO_FREEBIRD_CF_CD|GPIO_FREEBIRD_CF_BVD, GPIO_NO_EDGES);
  return 0;
}
 
struct pcmcia_low_level freebird_pcmcia_ops = {
  init:                 freebird_pcmcia_init,
  shutdown:             freebird_pcmcia_shutdown,
  socket_state:         freebird_pcmcia_socket_state,
  get_irq_info:         freebird_pcmcia_get_irq_info,
  configure_socket:     freebird_pcmcia_configure_socket,
 
  socket_init:          freebird_pcmcia_socket_init,
  socket_suspend:       freebird_pcmcia_socket_suspend,
};
 

Line No.	Rev	Author	Line
1	1275	phoenix	`/*`
2			`* drivers/pcmcia/sa1100_freebird.c`
3			`*`
4			`* Created by Eric Peng <ericpeng@coventive.com>`
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 int freebird_pcmcia_init(struct pcmcia_init *init){`
16			`int irq, res;`
17
18			`/* Enable Linkup CF card */`
19			`LINKUP_PRC = 0xc0;`
20			`mdelay(100);`
21			`LINKUP_PRC = 0xc1;`
22			`mdelay(100);`
23			`LINKUP_PRC = 0xd1;`
24			`mdelay(100);`
25			`LINKUP_PRC = 0xd1;`
26			`mdelay(100);`
27			`LINKUP_PRC = 0xc0;`
28
29			`/* Set transition detect */`
30			`//set_GPIO_IRQ_edge( GPIO_CF_CD\|GPIO_CF_BVD2\|GPIO_CF_BVD1, GPIO_BOTH_EDGES );`
31			`//set_GPIO_IRQ_edge( GPIO_CF_IRQ, GPIO_FALLING_EDGE );`
32			`set_GPIO_IRQ_edge(GPIO_FREEBIRD_CF_CD\|GPIO_FREEBIRD_CF_BVD,GPIO_NO_EDGES);`
33			`set_GPIO_IRQ_edge(GPIO_FREEBIRD_CF_IRQ, GPIO_FALLING_EDGE);`
34
35			`/* Register interrupts */`
36			`irq = IRQ_GPIO_FREEBIRD_CF_CD;`
37			`res = request_irq( irq, init->handler, SA_INTERRUPT, "CF_CD", NULL );`
38			`if( res < 0 ) goto irq_err;`
39			`irq = IRQ_GPIO_FREEBIRD_CF_BVD;`
40			`res = request_irq( irq, init->handler, SA_INTERRUPT, "CF_BVD1", NULL );`
41			`if( res < 0 ) goto irq_err;`
42
43			`/* There's only one slot, but it's "Slot 1": */`
44			`return 2;`
45
46			`irq_err:`
47			`printk( KERN_ERR "%s: Request for IRQ %lu failed\n", __FUNCTION__, irq );`
48			`return -1;`
49			`}`
50
51			`static int freebird_pcmcia_shutdown(void)`
52			`{`
53			`/* disable IRQs */`
54			`free_irq( IRQ_GPIO_FREEBIRD_CF_CD, NULL );`
55			`free_irq( IRQ_GPIO_FREEBIRD_CF_BVD, NULL );`
56
57			`/* Disable CF card */`
58			`LINKUP_PRC = 0x40; /* SSP=1 SOE=0 */`
59			`mdelay(100);`
60
61			`return 0;`
62			`}`
63
64			`static int freebird_pcmcia_socket_state(struct pcmcia_state_array`
65			`*state_array){`
66			`unsigned long levels;`
67
68			`if(state_array->size<2) return -1;`
69
70			`memset(state_array->state, 0,`
71			`(state_array->size)*sizeof(struct pcmcia_state));`
72
73			`levels = LINKUP_PRS;`
74			`//printk("LINKUP_PRS=%x \n",levels);`
75
76			`state_array->state[0].detect=`
77			`((levels & (LINKUP_CD1 \| LINKUP_CD2))==0)?1:0;`
78
79			`state_array->state[0].ready=(levels & LINKUP_RDY)?1:0;`
80
81			`state_array->state[0].bvd1=(levels & LINKUP_BVD1)?1:0;`
82
83			`state_array->state[0].bvd2=(levels & LINKUP_BVD2)?1:0;`
84
85			`state_array->state[0].wrprot=0; /* Not available on Assabet. */`
86
87			`state_array->state[0].vs_3v=1; /* Can only apply 3.3V on Assabet. */`
88
89			`state_array->state[0].vs_Xv=0;`
90
91			`return 1;`
92			`}`
93
94			`static int freebird_pcmcia_get_irq_info(struct pcmcia_irq_info *info){`
95
96			`if(info->sock>1) return -1;`
97
98			`if(info->sock==0)`
99			`info->irq=IRQ_GPIO_FREEBIRD_CF_IRQ;`
100
101			`return 0;`
102			`}`
103
104			`static int freebird_pcmcia_configure_socket(const struct pcmcia_configure`
105			`*configure)`
106			`{`
107			`unsigned long value, flags;`
108
109			`if(configure->sock>1) return -1;`
110
111			`if(configure->sock==1) return 0;`
112
113			`save_flags_cli(flags);`
114
115			`value = 0xc0; /* SSP=1 SOE=1 CFE=1 */`
116
117			`switch(configure->vcc){`
118			`case 0:`
119
120			`break;`
121
122			`case 50:`
123			`printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V...\n",`
124			`__FUNCTION__);`
125
126			`case 33: /* Can only apply 3.3V to the CF slot. */`
127			`value \|= LINKUP_S1;`
128			`break;`
129
130			`default:`
131			`printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__,`
132			`configure->vcc);`
133			`restore_flags(flags);`
134			`return -1;`
135			`}`
136
137			`if (configure->reset)`
138			`value = (configure->reset) ? (value \| LINKUP_RESET) : (value & ~LINKUP_RESET);`
139
140			`/* Silently ignore Vpp, output enable, speaker enable. */`
141
142			`LINKUP_PRC = value;`
143			`//printk("LINKUP_PRC=%x\n",value);`
144			`restore_flags(flags);`
145
146			`return 0;`
147			`}`
148
149			`static int freebird_pcmcia_socket_init(int sock)`
150			`{`
151			`set_GPIO_IRQ_edge(GPIO_FREEBIRD_CF_CD\|GPIO_FREEBIRD_CF_BVD, GPIO_BOTH_EDGES);`
152			`return 0;`
153			`}`
154
155			`static int freebird_pcmcia_socket_suspend(int sock)`
156			`{`
157			`set_GPIO_IRQ_edge(GPIO_FREEBIRD_CF_CD\|GPIO_FREEBIRD_CF_BVD, GPIO_NO_EDGES);`
158			`return 0;`
159			`}`
160
161			`struct pcmcia_low_level freebird_pcmcia_ops = {`
162			`init: freebird_pcmcia_init,`
163			`shutdown: freebird_pcmcia_shutdown,`
164			`socket_state: freebird_pcmcia_socket_state,`
165			`get_irq_info: freebird_pcmcia_get_irq_info,`
166			`configure_socket: freebird_pcmcia_configure_socket,`
167
168			`socket_init: freebird_pcmcia_socket_init,`
169			`socket_suspend: freebird_pcmcia_socket_suspend,`
170			`};`
171

Browse

Tools

Subversion Repositories or1k

[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [pcmcia/] [sa1100_freebird.c] - Blame information for rev 1774