Commit 7a6588ba authored by Eric Benard's avatar Eric Benard Committed by Pierre Ossman
Browse files

mmc: at91_mci: add sdio irq management 



Enable SDIO interrupt handling.

Signed-off-by: default avatarEric Benard <ebenard@free.fr>
Signed-off-by: default avatarNicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: default avatarPierre Ossman <drzeus@drzeus.cx>
parent 3eb99a7b

drivers/mmc/host/at91_mci.c

+22 −4
Original line number Diff line number Diff line
@@ -665,7 +665,7 @@ static void at91_mci_completed_command(struct at91mci_host *host) 
	struct mmc_command *cmd = host->cmd;

	unsigned int status;



	at91_mci_write(host, AT91_MCI_IDR, 0xffffffff);

	at91_mci_write(host, AT91_MCI_IDR, 0xffffffff & ~(AT91_MCI_SDIOIRQA | AT91_MCI_SDIOIRQB));



	cmd->resp[0] = at91_mci_read(host, AT91_MCI_RSPR(0));

	cmd->resp[1] = at91_mci_read(host, AT91_MCI_RSPR(1));
@@ -856,6 +856,12 @@ static irqreturn_t at91_mci_irq(int irq, void *devid) 
			}

		}



		if (int_status & AT91_MCI_SDIOIRQA)

			mmc_signal_sdio_irq(host->mmc);



		if (int_status & AT91_MCI_SDIOIRQB)

			mmc_signal_sdio_irq(host->mmc);



		if (int_status & AT91_MCI_TXRDY)

			pr_debug("Ready to transmit\n");
@@ -870,10 +876,10 @@ static irqreturn_t at91_mci_irq(int irq, void *devid) 


	if (completed) {

		pr_debug("Completed command\n");

		at91_mci_write(host, AT91_MCI_IDR, 0xffffffff);

		at91_mci_write(host, AT91_MCI_IDR, 0xffffffff & ~(AT91_MCI_SDIOIRQA | AT91_MCI_SDIOIRQB));

		at91_mci_completed_command(host);

	} else

		at91_mci_write(host, AT91_MCI_IDR, int_status);

		at91_mci_write(host, AT91_MCI_IDR, int_status & ~(AT91_MCI_SDIOIRQA | AT91_MCI_SDIOIRQB));



	return IRQ_HANDLED;

}
@@ -913,10 +919,22 @@ static int at91_mci_get_ro(struct mmc_host *mmc) 
	return -ENOSYS;

}



static void at91_mci_enable_sdio_irq(struct mmc_host *mmc, int enable)

{

	struct at91mci_host *host = mmc_priv(mmc);



	pr_debug("%s: sdio_irq %c : %s\n", mmc_hostname(host->mmc),

		host->board->slot_b ? 'B':'A', enable ? "enable" : "disable");

	at91_mci_write(host, enable ? AT91_MCI_IER : AT91_MCI_IDR,

		host->board->slot_b ? AT91_MCI_SDIOIRQB : AT91_MCI_SDIOIRQA);



}



static const struct mmc_host_ops at91_mci_ops = {

	.request	= at91_mci_request,

	.set_ios	= at91_mci_set_ios,

	.get_ro		= at91_mci_get_ro,

	.enable_sdio_irq = at91_mci_enable_sdio_irq,

};



/*
@@ -947,7 +965,7 @@ static int __init at91_mci_probe(struct platform_device *pdev) 
	mmc->f_min = 375000;

	mmc->f_max = 25000000;

	mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;

	mmc->caps = MMC_CAP_MULTIWRITE;

	mmc->caps = MMC_CAP_MULTIWRITE | MMC_CAP_SDIO_IRQ;



	mmc->max_blk_size = 4095;

	mmc->max_blk_count = mmc->max_req_size;