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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [pcmcia/] [sa1100_pfs168.c] - Blame information for rev 1774

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#warning        "REVISIT_PFS168: Need to verify and test GPIO power encodings."
/*
 * drivers/pcmcia/sa1100_pfs168.c
 *
 * PFS168 PCMCIA specific routines
 *
 */
#include <linux/kernel.h>
#include <linux/sched.h>
 
#include <asm/delay.h>
#include <asm/hardware.h>
#include <asm/irq.h>
 
#include "sa1100_generic.h"
#include "sa1111_generic.h"
 
static int pfs168_pcmcia_init(struct pcmcia_init *init)
{
  /* TPS2211 to standby mode: */
  PA_DWR &= ~(GPIO_GPIO0 | GPIO_GPIO1 | GPIO_GPIO2 | GPIO_GPIO3);
 
  /* Set GPIO_A<3:0> to be outputs for PCMCIA (socket 0) power controller: */
  PA_DDR &= ~(GPIO_GPIO0 | GPIO_GPIO1 | GPIO_GPIO2 | GPIO_GPIO3);
 
  return sa1111_pcmcia_init(init);
}
 
static int
pfs168_pcmcia_configure_socket(const struct pcmcia_configure *conf)
{
  unsigned int pa_dwr_mask = 0, pa_dwr_set = 0;
  int ret;
 
  /* PFS168 uses the Texas Instruments TPS2211 for PCMCIA (socket 0) voltage control only,
   * with the following connections:
   *
   *   TPS2211      PFS168
   *
   *    -VCCD0      SA-1111 GPIO A<0>
   *    -VCCD0      SA-1111 GPIO A<1>
   *     VPPD0      SA-1111 GPIO A<2>
   *     VPPD0      SA-1111 GPIO A<2>
   *
   */
 
  switch (conf->sock) {
  case 0:
    pa_dwr_mask = GPIO_GPIO0 | GPIO_GPIO1 | GPIO_GPIO2 | GPIO_GPIO3;
 
    switch (conf->vcc) {
    default:
    case 0:      pa_dwr_set = 0;                  break;
    case 33:    pa_dwr_set = GPIO_GPIO0;        break;
    case 50:    pa_dwr_set = GPIO_GPIO1;        break;
    }
 
    switch (conf->vpp) {
    case 0:
      break;
 
    case 120:
      printk(KERN_ERR "%s(): PFS-168 does not support VPP %uV\n",
             __FUNCTION__, conf->vpp / 10);
      return -1;
      break;
 
    default:
      if (conf->vpp == conf->vcc)
        pa_dwr_set |= GPIO_GPIO3;
      else {
        printk(KERN_ERR "%s(): unrecognized VPP %u\n", __FUNCTION__,
               conf->vpp);
        return -1;
      }
    }
    break;
 
  case 1:
    pa_dwr_mask = 0;
    pa_dwr_set = 0;
 
    switch (conf->vcc) {
    case 0:
    case 33:
      break;
 
    case 50:
      printk(KERN_ERR "%s(): PFS-168 CompactFlash socket does not support VCC %uV\n",
             __FUNCTION__, conf->vcc / 10);
      return -1;
 
    default:
      printk(KERN_ERR "%s(): unrecognized VCC %u\n", __FUNCTION__,
             conf->vcc);
      return -1;
    }
 
    if (conf->vpp != conf->vcc && conf->vpp != 0) {
      printk(KERN_ERR "%s(): CompactFlash socket does not support VPP %uV\n"
              __FUNCTION__, conf->vpp/10);
      return -1;
    }
    break;
  }
 
  ret = sa1111_pcmcia_configure_socket(conf);
  if (ret == 0) {
    unsigned long flags;
 
    local_irq_save(flags);
    PA_DWR = (PA_DWR & ~pa_dwr_mask) | pa_dwr_set;
    local_irq_restore(flags);
  }
 
  return 0;
}
 
struct pcmcia_low_level pfs168_pcmcia_ops = {
  init:                 pfs168_pcmcia_init,
  shutdown:             sa1111_pcmcia_shutdown,
  socket_state:         sa1111_pcmcia_socket_state,
  get_irq_info:         sa1111_pcmcia_get_irq_info,
  configure_socket:     pfs168_pcmcia_configure_socket,
 
  socket_init:          sa1111_pcmcia_socket_init,
  socket_suspend:       sa1111_pcmcia_socket_suspend,
};

Line No.	Rev	Author	Line
1	1275	phoenix	`#warning "REVISIT_PFS168: Need to verify and test GPIO power encodings."`
2			`/*`
3			`* drivers/pcmcia/sa1100_pfs168.c`
4			`*`
5			`* PFS168 PCMCIA specific routines`
6			`*`
7			`*/`
8			`#include <linux/kernel.h>`
9			`#include <linux/sched.h>`
10
11			`#include <asm/delay.h>`
12			`#include <asm/hardware.h>`
13			`#include <asm/irq.h>`
14
15			`#include "sa1100_generic.h"`
16			`#include "sa1111_generic.h"`
17
18			`static int pfs168_pcmcia_init(struct pcmcia_init *init)`
19			`{`
20			`/* TPS2211 to standby mode: */`
21			`PA_DWR &= ~(GPIO_GPIO0 \| GPIO_GPIO1 \| GPIO_GPIO2 \| GPIO_GPIO3);`
22
23			`/* Set GPIO_A<3:0> to be outputs for PCMCIA (socket 0) power controller: */`
24			`PA_DDR &= ~(GPIO_GPIO0 \| GPIO_GPIO1 \| GPIO_GPIO2 \| GPIO_GPIO3);`
25
26			`return sa1111_pcmcia_init(init);`
27			`}`
28
29			`static int`
30			`pfs168_pcmcia_configure_socket(const struct pcmcia_configure *conf)`
31			`{`
32			`unsigned int pa_dwr_mask = 0, pa_dwr_set = 0;`
33			`int ret;`
34
35			`/* PFS168 uses the Texas Instruments TPS2211 for PCMCIA (socket 0) voltage control only,`
36			`* with the following connections:`
37			`*`
38			`* TPS2211 PFS168`
39			`*`
40			`* -VCCD0 SA-1111 GPIO A<0>`
41			`* -VCCD0 SA-1111 GPIO A<1>`
42			`* VPPD0 SA-1111 GPIO A<2>`
43			`* VPPD0 SA-1111 GPIO A<2>`
44			`*`
45			`*/`
46
47			`switch (conf->sock) {`
48			`case 0:`
49			`pa_dwr_mask = GPIO_GPIO0 \| GPIO_GPIO1 \| GPIO_GPIO2 \| GPIO_GPIO3;`
50
51			`switch (conf->vcc) {`
52			`default:`
53			`case 0: pa_dwr_set = 0; break;`
54			`case 33: pa_dwr_set = GPIO_GPIO0; break;`
55			`case 50: pa_dwr_set = GPIO_GPIO1; break;`
56			`}`
57
58			`switch (conf->vpp) {`
59			`case 0:`
60			`break;`
61
62			`case 120:`
63			`printk(KERN_ERR "%s(): PFS-168 does not support VPP %uV\n",`
64			`__FUNCTION__, conf->vpp / 10);`
65			`return -1;`
66			`break;`
67
68			`default:`
69			`if (conf->vpp == conf->vcc)`
70			`pa_dwr_set \|= GPIO_GPIO3;`
71			`else {`
72			`printk(KERN_ERR "%s(): unrecognized VPP %u\n", __FUNCTION__,`
73			`conf->vpp);`
74			`return -1;`
75			`}`
76			`}`
77			`break;`
78
79			`case 1:`
80			`pa_dwr_mask = 0;`
81			`pa_dwr_set = 0;`
82
83			`switch (conf->vcc) {`
84			`case 0:`
85			`case 33:`
86			`break;`
87
88			`case 50:`
89			`printk(KERN_ERR "%s(): PFS-168 CompactFlash socket does not support VCC %uV\n",`
90			`__FUNCTION__, conf->vcc / 10);`
91			`return -1;`
92
93			`default:`
94			`printk(KERN_ERR "%s(): unrecognized VCC %u\n", __FUNCTION__,`
95			`conf->vcc);`
96			`return -1;`
97			`}`
98
99			`if (conf->vpp != conf->vcc && conf->vpp != 0) {`
100			`printk(KERN_ERR "%s(): CompactFlash socket does not support VPP %uV\n"`
101			`__FUNCTION__, conf->vpp/10);`
102			`return -1;`
103			`}`
104			`break;`
105			`}`
106
107			`ret = sa1111_pcmcia_configure_socket(conf);`
108			`if (ret == 0) {`
109			`unsigned long flags;`
110
111			`local_irq_save(flags);`
112			`PA_DWR = (PA_DWR & ~pa_dwr_mask) \| pa_dwr_set;`
113			`local_irq_restore(flags);`
114			`}`
115
116			`return 0;`
117			`}`
118
119			`struct pcmcia_low_level pfs168_pcmcia_ops = {`
120			`init: pfs168_pcmcia_init,`
121			`shutdown: sa1111_pcmcia_shutdown,`
122			`socket_state: sa1111_pcmcia_socket_state,`
123			`get_irq_info: sa1111_pcmcia_get_irq_info,`
124			`configure_socket: pfs168_pcmcia_configure_socket,`
125
126			`socket_init: sa1111_pcmcia_socket_init,`
127			`socket_suspend: sa1111_pcmcia_socket_suspend,`
128			`};`

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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [pcmcia/] [sa1100_pfs168.c] - Blame information for rev 1774