aboutsummaryrefslogtreecommitdiff
path: root/drivers/spi
diff options
context:
space:
mode:
authorLinus Walleij <linus.walleij@stericsson.com>2012-09-26 16:48:36 +0200
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-09-28 14:05:06 +0100
commitaeef9915b9a40d257ec94f9900a3fb4a15da2ab7 (patch)
tree3c3e9d9707b763047f1fe4a445bc5d71d9addd36 /drivers/spi
parent8e5d0661b3948f3c5a143f32d192710375822af2 (diff)
downloadlinux-linaro-stable-aeef9915b9a40d257ec94f9900a3fb4a15da2ab7.tar.gz
spi/pl022: use more managed resources
This switches the PL022 SPI driver to use devm_* managed resources for IRQ, clocks, ioremap and GPIO. Prior to this, the GPIOs would even leak. Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/spi-pl022.c31
1 files changed, 10 insertions, 21 deletions
diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c
index f8568b43660d..15737bcee9fb 100644
--- a/drivers/spi/spi-pl022.c
+++ b/drivers/spi/spi-pl022.c
@@ -1,7 +1,7 @@
/*
* A driver for the ARM PL022 PrimeCell SSP/SPI bus master.
*
- * Copyright (C) 2008-2009 ST-Ericsson AB
+ * Copyright (C) 2008-2012 ST-Ericsson AB
* Copyright (C) 2006 STMicroelectronics Pvt. Ltd.
*
* Author: Linus Walleij <linus.walleij@stericsson.com>
@@ -2074,24 +2074,21 @@ pl022_probe(struct amba_device *adev, const struct amba_id *id)
if (!platform_info) {
dev_err(dev, "probe: no platform data defined\n");
- status = -ENODEV;
- goto err_no_pdata;
+ return -ENODEV;
}
if (platform_info->num_chipselect) {
num_cs = platform_info->num_chipselect;
} else {
dev_err(dev, "probe: no chip select defined\n");
- status = -ENODEV;
- goto err_no_pdata;
+ return -ENODEV;
}
/* Allocate master with space for data */
master = spi_alloc_master(dev, sizeof(struct pl022));
if (master == NULL) {
dev_err(&adev->dev, "probe - cannot alloc SPI master\n");
- status = -ENOMEM;
- goto err_no_master;
+ return -ENOMEM;
}
pl022 = spi_master_get_devdata(master);
@@ -2153,7 +2150,7 @@ pl022_probe(struct amba_device *adev, const struct amba_id *id)
pl022->chipselects[i] = cs_gpio;
if (gpio_is_valid(cs_gpio)) {
- if (gpio_request(cs_gpio, "ssp-pl022"))
+ if (devm_gpio_request(dev, cs_gpio, "ssp-pl022"))
dev_err(&adev->dev,
"could not request %d gpio\n",
cs_gpio);
@@ -2180,7 +2177,8 @@ pl022_probe(struct amba_device *adev, const struct amba_id *id)
goto err_no_ioregion;
pl022->phybase = adev->res.start;
- pl022->virtbase = ioremap(adev->res.start, resource_size(&adev->res));
+ pl022->virtbase = devm_ioremap(dev, adev->res.start,
+ resource_size(&adev->res));
if (pl022->virtbase == NULL) {
status = -ENOMEM;
goto err_no_ioremap;
@@ -2190,7 +2188,7 @@ pl022_probe(struct amba_device *adev, const struct amba_id *id)
pm_runtime_resume(dev);
- pl022->clk = clk_get(&adev->dev, NULL);
+ pl022->clk = devm_clk_get(&adev->dev, NULL);
if (IS_ERR(pl022->clk)) {
status = PTR_ERR(pl022->clk);
dev_err(&adev->dev, "could not retrieve SSP/SPI bus clock\n");
@@ -2218,8 +2216,8 @@ pl022_probe(struct amba_device *adev, const struct amba_id *id)
SSP_CR1(pl022->virtbase));
load_ssp_default_config(pl022);
- status = request_irq(adev->irq[0], pl022_interrupt_handler, 0, "pl022",
- pl022);
+ status = devm_request_irq(dev, adev->irq[0], pl022_interrupt_handler,
+ 0, "pl022", pl022);
if (status < 0) {
dev_err(&adev->dev, "probe - cannot get IRQ (%d)\n", status);
goto err_no_irq;
@@ -2259,24 +2257,18 @@ pl022_probe(struct amba_device *adev, const struct amba_id *id)
err_spi_register:
if (platform_info->enable_dma)
pl022_dma_remove(pl022);
-
- free_irq(adev->irq[0], pl022);
err_no_irq:
clk_disable(pl022->clk);
err_no_clk_en:
clk_unprepare(pl022->clk);
err_clk_prep:
- clk_put(pl022->clk);
err_no_clk:
- iounmap(pl022->virtbase);
err_no_ioremap:
amba_release_regions(adev);
err_no_ioregion:
err_no_gpio:
err_no_pinctrl:
spi_master_put(master);
- err_no_master:
- err_no_pdata:
return status;
}
@@ -2298,12 +2290,9 @@ pl022_remove(struct amba_device *adev)
if (pl022->master_info->enable_dma)
pl022_dma_remove(pl022);
- free_irq(adev->irq[0], pl022);
clk_disable(pl022->clk);
clk_unprepare(pl022->clk);
- clk_put(pl022->clk);
pm_runtime_disable(&adev->dev);
- iounmap(pl022->virtbase);
amba_release_regions(adev);
tasklet_disable(&pl022->pump_transfers);
spi_unregister_master(pl022->master);