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SAMA5D4: Add support for HSMCI1 power control pin

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This commit is contained in:
Gregory Nutt 2014-06-11 14:55:51 -06:00
parent 2cf637692a
commit d55865b97a
2 changed files with 18 additions and 8 deletions
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20
configs/sama5d4-ek/src/sam_hsmci.c
View File

@ -109,7 +109,8 @@
struct sam_hsmci_state_s
{
struct sdio_dev_s *hsmci; /* R/W device handle */
pio_pinset_t pincfg; /* Card detect PIO pin configuration */
pio_pinset_t cdcfg; /* Card detect PIO pin configuration */
pio_pinset_t pwrcfg; /* Power PIO pin configuration */
uint8_t irq; /* Interrupt number (same as pid) */
uint8_t slotno; /* Slot number */
bool cd; /* TRUE: card is inserted */
@ -127,7 +128,7 @@ static int sam_hsmci0_cardetect(int irq, void *regs);
static struct sam_hsmci_state_s g_hsmci0 =
{
.pincfg = PIO_MCI0_CD,
.cdcfg = PIO_MCI0_CD,
.irq = IRQ_MCI0_CD,
.slotno = 0,
.handler = sam_hsmci0_cardetect,
@ -139,7 +140,8 @@ static int sam_hsmci1_cardetect(int irq, void *regs);
static struct sam_hsmci_state_s g_hsmci1 =
{
.pincfg = PIO_MCI1_CD,
.cdcfg = PIO_MCI1_CD,
.pwrcfg = IRQ_MCI1_PWR,
.irq = IRQ_MCI1_CD,
.slotno = 1,
.handler = sam_hsmci1_cardetect,
@ -164,7 +166,7 @@ bool sam_cardinserted_internal(struct sam_hsmci_state_s *state)
/* Get the state of the PIO pin */
inserted = sam_pioread(state->pincfg);
inserted = sam_pioread(state->cdcfg);
fllvdbg("Slot %d inserted: %s\n", state->slotno, inserted ? "NO" : "YES");
return !inserted;
}
@ -272,9 +274,13 @@ int sam_hsmci_initialize(int slotno, int minor)
return -EINVAL;
}
/* Initialize card-detect and write-protect PIOs */
/* Initialize card-detect, write-protect, and power enable PIOs */
sam_configpio(state->pincfg);
sam_configpio(state->cdcfg);
if (state->pwrcfg != 0)
{
sam_configpio(state->pwrcfg);
}
/* Mount the SDIO-based MMC/SD block driver */
/* First, get an instance of the SDIO interface */
@ -297,7 +303,7 @@ int sam_hsmci_initialize(int slotno, int minor)
/* Configure card detect interrupts */
sam_pioirq(state->pincfg);
sam_pioirq(state->cdcfg);
(void)irq_attach(state->irq, state->handler);
/* Then inform the HSMCI driver if there is or is not a card in the slot. */

6
configs/sama5d4-ek/src/sama5d4-ek.h
View File

@ -333,7 +333,8 @@
#define IRQ_MCI0_CD SAM_IRQ_PE5
/* The microSD connects vi HSMCI1. The card detect discrete is available on
* PE14 (pulled high):
* PE14 (pulled high) NOTE that PE15 must be controlled to provide power
* to the HSMCI1 slot (the HSMCI0 slot is always powered).
*
* ------------------------------ ------------------- -------------------------
* SAMA5D4 PIO SIGNAL USAGE
@ -354,6 +355,9 @@
PIO_INT_BOTHEDGES | PIO_PORT_PIOE | PIO_PIN14)
#define IRQ_MCI1_CD SAM_IRQ_PE14
#define IRQ_MCI1_PWR (PIO_OUTPUT | PIO_CFG_DEFAULT | PIO_OUTPUT_SET | \
PIO_PORT_PIOE | PIO_PIN15)
/* USB Ports ************************************************************************/
/* The SAMA5D4 series-MB features three USB communication ports:
*