sa1100_jornada720.c 2.7 KB

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  1. /*
  2. * drivers/pcmcia/sa1100_jornada720.c
  3. *
  4. * Jornada720 PCMCIA specific routines
  5. *
  6. */
  7. #include <linux/module.h>
  8. #include <linux/kernel.h>
  9. #include <linux/device.h>
  10. #include <linux/errno.h>
  11. #include <linux/init.h>
  12. #include <asm/hardware.h>
  13. #include <asm/hardware/sa1111.h>
  14. #include <asm/mach-types.h>
  15. #include "sa1111_generic.h"
  16. #define SOCKET0_POWER GPIO_GPIO0
  17. #define SOCKET0_3V GPIO_GPIO2
  18. #define SOCKET1_POWER (GPIO_GPIO1 | GPIO_GPIO3)
  19. #warning *** Does SOCKET1_3V actually do anything?
  20. #define SOCKET1_3V GPIO_GPIO3
  21. static int jornada720_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
  22. {
  23. /*
  24. * What is all this crap for?
  25. */
  26. GRER |= 0x00000002;
  27. /* Set GPIO_A<3:1> to be outputs for PCMCIA/CF power controller: */
  28. sa1111_set_io_dir(SA1111_DEV(skt->dev), GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0, 0);
  29. sa1111_set_io(SA1111_DEV(skt->dev), GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0);
  30. sa1111_set_sleep_io(SA1111_DEV(skt->dev), GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0);
  31. return sa1111_pcmcia_hw_init(skt);
  32. }
  33. static int
  34. jornada720_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
  35. {
  36. unsigned int pa_dwr_mask, pa_dwr_set;
  37. int ret;
  38. printk("%s(): config socket %d vcc %d vpp %d\n", __FUNCTION__,
  39. skt->nr, state->Vcc, state->Vpp);
  40. switch (skt->nr) {
  41. case 0:
  42. pa_dwr_mask = SOCKET0_POWER | SOCKET0_3V;
  43. switch (state->Vcc) {
  44. default:
  45. case 0: pa_dwr_set = 0; break;
  46. case 33: pa_dwr_set = SOCKET0_POWER | SOCKET0_3V; break;
  47. case 50: pa_dwr_set = SOCKET0_POWER; break;
  48. }
  49. break;
  50. case 1:
  51. pa_dwr_mask = SOCKET1_POWER;
  52. switch (state->Vcc) {
  53. default:
  54. case 0: pa_dwr_set = 0; break;
  55. case 33: pa_dwr_set = SOCKET1_POWER; break;
  56. case 50: pa_dwr_set = SOCKET1_POWER; break;
  57. }
  58. break;
  59. default:
  60. return -1;
  61. }
  62. if (state->Vpp != state->Vcc && state->Vpp != 0) {
  63. printk(KERN_ERR "%s(): slot cannot support VPP %u\n",
  64. __FUNCTION__, state->Vpp);
  65. return -1;
  66. }
  67. ret = sa1111_pcmcia_configure_socket(skt, state);
  68. if (ret == 0) {
  69. unsigned long flags;
  70. local_irq_save(flags);
  71. sa1111_set_io(SA1111_DEV(skt->dev), pa_dwr_mask, pa_dwr_set);
  72. local_irq_restore(flags);
  73. }
  74. return ret;
  75. }
  76. static struct pcmcia_low_level jornada720_pcmcia_ops = {
  77. .owner = THIS_MODULE,
  78. .hw_init = jornada720_pcmcia_hw_init,
  79. .hw_shutdown = sa1111_pcmcia_hw_shutdown,
  80. .socket_state = sa1111_pcmcia_socket_state,
  81. .configure_socket = jornada720_pcmcia_configure_socket,
  82. .socket_init = sa1111_pcmcia_socket_init,
  83. .socket_suspend = sa1111_pcmcia_socket_suspend,
  84. };
  85. int __init pcmcia_jornada720_init(struct device *dev)
  86. {
  87. int ret = -ENODEV;
  88. if (machine_is_jornada720())
  89. ret = sa11xx_drv_pcmcia_probe(dev, &jornada720_pcmcia_ops, 0, 2);
  90. return ret;
  91. }