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author | Lars-Peter Clausen <lars@metafoo.de> | 2010-05-12 02:10:55 +0200 |
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committer | Samuel Ortiz <sameo@linux.intel.com> | 2010-05-28 01:37:49 +0200 |
commit | f7b2a77fe6f7b13b9cbf1909f032adef0be63ce1 (patch) | |
tree | e698cc1ab7e777f8820d0d3c412865edfe25002c /drivers/mfd/pcf50633-core.c | |
parent | 6438a694b670cd188c2fd2f75e0cd6b0ae21bea9 (diff) | |
download | kernel_samsung_tuna-f7b2a77fe6f7b13b9cbf1909f032adef0be63ce1.zip kernel_samsung_tuna-f7b2a77fe6f7b13b9cbf1909f032adef0be63ce1.tar.gz kernel_samsung_tuna-f7b2a77fe6f7b13b9cbf1909f032adef0be63ce1.tar.bz2 |
mfd: Use threaded irq for pcf50633
Use threaded oneshot irq handler instead of normal irq handler and a workqueue.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd/pcf50633-core.c')
-rw-r--r-- | drivers/mfd/pcf50633-core.c | 57 |
1 files changed, 9 insertions, 48 deletions
diff --git a/drivers/mfd/pcf50633-core.c b/drivers/mfd/pcf50633-core.c index 37618b2..b3bef49 100644 --- a/drivers/mfd/pcf50633-core.c +++ b/drivers/mfd/pcf50633-core.c @@ -325,14 +325,12 @@ static void pcf50633_irq_call_handler(struct pcf50633 *pcf, int irq) /* Maximum amount of time ONKEY is held before emergency action is taken */ #define PCF50633_ONKEY1S_TIMEOUT 8 -static void pcf50633_irq_worker(struct work_struct *work) +static irqreturn_t pcf50633_irq(int irq, void *data) { - struct pcf50633 *pcf; + struct pcf50633 *pcf = data; int ret, i, j; u8 pcf_int[5], chgstat; - pcf = container_of(work, struct pcf50633, irq_work); - /* Read the 5 INT regs in one transaction */ ret = pcf50633_read_block(pcf, PCF50633_REG_INT1, ARRAY_SIZE(pcf_int), pcf_int); @@ -436,21 +434,7 @@ static void pcf50633_irq_worker(struct work_struct *work) } out: - put_device(pcf->dev); - enable_irq(pcf->irq); -} - -static irqreturn_t pcf50633_irq(int irq, void *data) -{ - struct pcf50633 *pcf = data; - - dev_dbg(pcf->dev, "pcf50633_irq\n"); - - get_device(pcf->dev); - disable_irq_nosync(pcf->irq); - queue_work(pcf->work_queue, &pcf->irq_work); - - return IRQ_HANDLED; + return IRQ_HANDLED } static void @@ -488,9 +472,6 @@ static int pcf50633_suspend(struct i2c_client *client, pm_message_t state) * henceforth */ disable_irq(pcf->irq); - /* Make sure that any running IRQ worker has quit */ - cancel_work_sync(&pcf->irq_work); - /* Save the masks */ ret = pcf50633_read_block(pcf, PCF50633_REG_INT1M, ARRAY_SIZE(pcf->suspend_irq_masks), @@ -531,16 +512,7 @@ static int pcf50633_resume(struct i2c_client *client) if (ret < 0) dev_err(pcf->dev, "Error restoring saved suspend masks\n"); - /* Restore regulators' state */ - - - get_device(pcf->dev); - - /* - * Clear any pending interrupts and set resume reason if any. - * This will leave with enable_irq() - */ - pcf50633_irq_worker(&pcf->irq_work); + enable_irq(pcf->irq); return 0; } @@ -574,22 +546,13 @@ static int __devinit pcf50633_probe(struct i2c_client *client, pcf->dev = &client->dev; pcf->i2c_client = client; pcf->irq = client->irq; - pcf->work_queue = create_singlethread_workqueue("pcf50633"); - - if (!pcf->work_queue) { - dev_err(&client->dev, "Failed to alloc workqueue\n"); - ret = -ENOMEM; - goto err_free; - } - - INIT_WORK(&pcf->irq_work, pcf50633_irq_worker); version = pcf50633_reg_read(pcf, 0); variant = pcf50633_reg_read(pcf, 1); if (version < 0 || variant < 0) { dev_err(pcf->dev, "Unable to probe pcf50633\n"); ret = -ENODEV; - goto err_destroy_workqueue; + goto err_free; } dev_info(pcf->dev, "Probed device version %d variant %d\n", @@ -603,12 +566,13 @@ static int __devinit pcf50633_probe(struct i2c_client *client, pcf50633_reg_write(pcf, PCF50633_REG_INT4M, 0x00); pcf50633_reg_write(pcf, PCF50633_REG_INT5M, 0x00); - ret = request_irq(client->irq, pcf50633_irq, - IRQF_TRIGGER_LOW, "pcf50633", pcf); + ret = request_threaded_irq(client->irq, NULL, pcf50633_irq, + IRQF_TRIGGER_LOW | IRQF_ONESHOT, + "pcf50633", pcf); if (ret) { dev_err(pcf->dev, "Failed to request IRQ %d\n", ret); - goto err_destroy_workqueue; + goto err_free; } /* Create sub devices */ @@ -654,8 +618,6 @@ static int __devinit pcf50633_probe(struct i2c_client *client, return 0; -err_destroy_workqueue: - destroy_workqueue(pcf->work_queue); err_free: i2c_set_clientdata(client, NULL); kfree(pcf); @@ -669,7 +631,6 @@ static int __devexit pcf50633_remove(struct i2c_client *client) int i; free_irq(pcf->irq, pcf); - destroy_workqueue(pcf->work_queue); platform_device_unregister(pcf->input_pdev); platform_device_unregister(pcf->rtc_pdev); |