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tifm: hide details of interrupt processing from socket drivers

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Instead of passing transformed value of adapter interrupt status to
socket drivers, implement two separate callbacks - one for card events
and another for dma events.

Signed-off-by: Alex Dubov <oakad@yahoo.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
This commit is contained in:
Alex Dubov
2007-04-12 16:59:12 +10:00
committed by Pierre Ossman
parent 5721dbf217
commit 4552f0cbd4
4 changed files with 50 additions and 37 deletions
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43
drivers/mmc/tifm_sd.c
View File

@@ -17,7 +17,7 @@
#include <asm/io.h>
#define DRIVER_NAME "tifm_sd"
#define DRIVER_VERSION "0.7"
#define DRIVER_VERSION "0.8"
static int no_dma = 0;
static int fixed_timeout = 0;
@@ -316,24 +316,38 @@ change_state:
}
/* Called from interrupt handler */
static void tifm_sd_signal_irq(struct tifm_dev *sock,
unsigned int sock_irq_status)
static void tifm_sd_data_event(struct tifm_dev *sock)
{
struct tifm_sd *host;
unsigned int host_status = 0, fifo_status = 0;
unsigned int fifo_status = 0;
spin_lock(&sock->lock);
host = mmc_priv((struct mmc_host*)tifm_get_drvdata(sock));
fifo_status = readl(sock->addr + SOCK_DMA_FIFO_STATUS);
writel(fifo_status, sock->addr + SOCK_DMA_FIFO_STATUS);
host->flags |= fifo_status & FIFO_RDY;
if (host->req)
tifm_sd_process_cmd(sock, host, 0);
dev_dbg(&sock->dev, "fifo_status %x\n", fifo_status);
spin_unlock(&sock->lock);
}
/* Called from interrupt handler */
static void tifm_sd_card_event(struct tifm_dev *sock)
{
struct tifm_sd *host;
unsigned int host_status = 0;
int error_code = 0;
spin_lock(&sock->lock);
host = mmc_priv((struct mmc_host*)tifm_get_drvdata(sock));
if (sock_irq_status & FIFO_EVENT) {
fifo_status = readl(sock->addr + SOCK_DMA_FIFO_STATUS);
writel(fifo_status, sock->addr + SOCK_DMA_FIFO_STATUS);
host->flags |= fifo_status & FIFO_RDY;
}
if (sock_irq_status & CARD_EVENT) {
host_status = readl(sock->addr + SOCK_MMCSD_STATUS);
writel(host_status, sock->addr + SOCK_MMCSD_STATUS);
@@ -377,13 +391,11 @@ static void tifm_sd_signal_irq(struct tifm_dev *sock,
host->written_blocks++;
host->flags &= ~CARD_BUSY;
}
}
if (host->req)
tifm_sd_process_cmd(sock, host, host_status);
done:
dev_dbg(&sock->dev, "host_status %x, fifo_status %x\n",
host_status, fifo_status);
dev_dbg(&sock->dev, "host_status %x\n", host_status);
spin_unlock(&sock->lock);
}
@@ -882,7 +894,8 @@ static int tifm_sd_probe(struct tifm_dev *sock)
mmc->max_blk_size = 2048;
mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count;
mmc->max_seg_size = mmc->max_req_size;
sock->signal_irq = tifm_sd_signal_irq;
sock->card_event = tifm_sd_card_event;
sock->data_event = tifm_sd_data_event;
rc = tifm_sd_initialize_host(host);
if (!rc)