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authorLinus Torvalds <torvalds@linux-foundation.org>2012-12-13 19:51:23 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-13 19:51:23 (GMT)
commit046e7d685bc370fd4c879ab6635ad3f69e6673d1 (patch)
tree36b981f8d1f2bfd348c1479acbe3a9426d35c377 /drivers/misc/atmel-ssc.c
parentfe504c5c745aeb767d978fbedeb94775fd4cb69c (diff)
parent6eb827d23577a4efec2b10a9c4cc9ded268a1d1c (diff)
downloadlinux-046e7d685bc370fd4c879ab6635ad3f69e6673d1.tar.xz
Merge tag 'sound-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai: "This update contains a fairly wide range of changes all over in sound subdirectory, mainly because of UAPI header moves by David and __dev* annotation removals by Bill. Other highlights are: - Introduced the support for wallclock timestamps in ALSA PCM core - Add the poll loop implementation for HD-audio jack detection - Yet more VGA-switcheroo fixes for HD-audio - New VIA HD-audio codec support - More fixes on resource management in USB audio and MIDI drivers - More quirks for USB-audio ASUS Xonar U3, Reloop Play, Focusrite, Roland VG-99, etc - Add support for FastTrack C400 usb-audio - Clean ups in many drivers regarding firmware loading - Add PSC724 Ultiimate Edge support to ice1712 - A few hdspm driver updates - New Stanton SCS.1d/1m FireWire driver - Standardisation of the logging in ASoC codes - DT and dmaengine support for ASoC Atmel - Support for Wolfson ADSP cores - New drivers for Freescale/iVeia P1022 and Maxim MAX98090 - Lots of other ASoC driver fixes and developments" Fix up trivial conflicts. And go out on a limb and assume the dts file 'status' field of one of the conflicting things was supposed to be "disabled", not "disable" like in pretty much all other cases. * tag 'sound-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (341 commits) ALSA: hda - Move runtime PM check to runtime_idle callback ALSA: hda - Add stereo-dmic fixup for Acer Aspire One 522 ALSA: hda - Avoid doubly suspend after vga switcheroo ALSA: usb-audio: Enable S/PDIF on the ASUS Xonar U3 ALSA: hda - Check validity of CORB/RIRB WP reads ALSA: hda - use usleep_range in link reset and change timeout check ALSA: HDA: VIA: Add support for codec VT1808. ALSA: HDA: VIA Add support for codec VT1705CF. ASoC: codecs: remove __dev* attributes ASoC: utils: remove __dev* attributes ASoC: ux500: remove __dev* attributes ASoC: txx9: remove __dev* attributes ASoC: tegra: remove __dev* attributes ASoC: spear: remove __dev* attributes ASoC: sh: remove __dev* attributes ASoC: s6000: remove __dev* attributes ASoC: OMAP: remove __dev* attributes ASoC: nuc900: remove __dev* attributes ASoC: mxs: remove __dev* attributes ASoC: kirkwood: remove __dev* attributes ...
Diffstat (limited to 'drivers/misc/atmel-ssc.c')
-rw-r--r--drivers/misc/atmel-ssc.c135
1 files changed, 88 insertions, 47 deletions
diff --git a/drivers/misc/atmel-ssc.c b/drivers/misc/atmel-ssc.c
index c58f9ab..158da5a 100644
--- a/drivers/misc/atmel-ssc.c
+++ b/drivers/misc/atmel-ssc.c
@@ -18,6 +18,8 @@
#include <linux/slab.h>
#include <linux/module.h>
+#include <linux/of.h>
+
/* Serialize access to ssc_list and user count */
static DEFINE_SPINLOCK(user_lock);
static LIST_HEAD(ssc_list);
@@ -29,7 +31,13 @@ struct ssc_device *ssc_request(unsigned int ssc_num)
spin_lock(&user_lock);
list_for_each_entry(ssc, &ssc_list, list) {
- if (ssc->pdev->id == ssc_num) {
+ if (ssc->pdev->dev.of_node) {
+ if (of_alias_get_id(ssc->pdev->dev.of_node, "ssc")
+ == ssc_num) {
+ ssc_valid = 1;
+ break;
+ }
+ } else if (ssc->pdev->id == ssc_num) {
ssc_valid = 1;
break;
}
@@ -68,39 +76,93 @@ void ssc_free(struct ssc_device *ssc)
}
EXPORT_SYMBOL(ssc_free);
-static int __init ssc_probe(struct platform_device *pdev)
+static struct atmel_ssc_platform_data at91rm9200_config = {
+ .use_dma = 0,
+};
+
+static struct atmel_ssc_platform_data at91sam9g45_config = {
+ .use_dma = 1,
+};
+
+static const struct platform_device_id atmel_ssc_devtypes[] = {
+ {
+ .name = "at91rm9200_ssc",
+ .driver_data = (unsigned long) &at91rm9200_config,
+ }, {
+ .name = "at91sam9g45_ssc",
+ .driver_data = (unsigned long) &at91sam9g45_config,
+ }, {
+ /* sentinel */
+ }
+};
+
+#ifdef CONFIG_OF
+static const struct of_device_id atmel_ssc_dt_ids[] = {
+ {
+ .compatible = "atmel,at91rm9200-ssc",
+ .data = &at91rm9200_config,
+ }, {
+ .compatible = "atmel,at91sam9g45-ssc",
+ .data = &at91sam9g45_config,
+ }, {
+ /* sentinel */
+ }
+};
+MODULE_DEVICE_TABLE(of, atmel_ssc_dt_ids);
+#endif
+
+static inline const struct atmel_ssc_platform_data * __init
+ atmel_ssc_get_driver_data(struct platform_device *pdev)
+{
+ if (pdev->dev.of_node) {
+ const struct of_device_id *match;
+ match = of_match_node(atmel_ssc_dt_ids, pdev->dev.of_node);
+ if (match == NULL)
+ return NULL;
+ return match->data;
+ }
+
+ return (struct atmel_ssc_platform_data *)
+ platform_get_device_id(pdev)->driver_data;
+}
+
+static int ssc_probe(struct platform_device *pdev)
{
- int retval = 0;
struct resource *regs;
struct ssc_device *ssc;
+ const struct atmel_ssc_platform_data *plat_dat;
- ssc = kzalloc(sizeof(struct ssc_device), GFP_KERNEL);
+ ssc = devm_kzalloc(&pdev->dev, sizeof(struct ssc_device), GFP_KERNEL);
if (!ssc) {
dev_dbg(&pdev->dev, "out of memory\n");
- retval = -ENOMEM;
- goto out;
+ return -ENOMEM;
}
+ ssc->pdev = pdev;
+
+ plat_dat = atmel_ssc_get_driver_data(pdev);
+ if (!plat_dat)
+ return -ENODEV;
+ ssc->pdata = (struct atmel_ssc_platform_data *)plat_dat;
+
regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!regs) {
dev_dbg(&pdev->dev, "no mmio resource defined\n");
- retval = -ENXIO;
- goto out_free;
+ return -ENXIO;
}
- ssc->clk = clk_get(&pdev->dev, "pclk");
- if (IS_ERR(ssc->clk)) {
- dev_dbg(&pdev->dev, "no pclk clock defined\n");
- retval = -ENXIO;
- goto out_free;
- }
-
- ssc->pdev = pdev;
- ssc->regs = ioremap(regs->start, resource_size(regs));
+ ssc->regs = devm_request_and_ioremap(&pdev->dev, regs);
if (!ssc->regs) {
dev_dbg(&pdev->dev, "ioremap failed\n");
- retval = -EINVAL;
- goto out_clk;
+ return -EINVAL;
+ }
+
+ ssc->phybase = regs->start;
+
+ ssc->clk = devm_clk_get(&pdev->dev, "pclk");
+ if (IS_ERR(ssc->clk)) {
+ dev_dbg(&pdev->dev, "no pclk clock defined\n");
+ return -ENXIO;
}
/* disable all interrupts */
@@ -112,8 +174,7 @@ static int __init ssc_probe(struct platform_device *pdev)
ssc->irq = platform_get_irq(pdev, 0);
if (!ssc->irq) {
dev_dbg(&pdev->dev, "could not get irq\n");
- retval = -ENXIO;
- goto out_unmap;
+ return -ENXIO;
}
spin_lock(&user_lock);
@@ -125,16 +186,7 @@ static int __init ssc_probe(struct platform_device *pdev)
dev_info(&pdev->dev, "Atmel SSC device at 0x%p (irq %d)\n",
ssc->regs, ssc->irq);
- goto out;
-
-out_unmap:
- iounmap(ssc->regs);
-out_clk:
- clk_put(ssc->clk);
-out_free:
- kfree(ssc);
-out:
- return retval;
+ return 0;
}
static int ssc_remove(struct platform_device *pdev)
@@ -142,34 +194,23 @@ static int ssc_remove(struct platform_device *pdev)
struct ssc_device *ssc = platform_get_drvdata(pdev);
spin_lock(&user_lock);
- iounmap(ssc->regs);
- clk_put(ssc->clk);
list_del(&ssc->list);
- kfree(ssc);
spin_unlock(&user_lock);
return 0;
}
static struct platform_driver ssc_driver = {
- .remove = ssc_remove,
.driver = {
.name = "ssc",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(atmel_ssc_dt_ids),
},
+ .id_table = atmel_ssc_devtypes,
+ .probe = ssc_probe,
+ .remove = ssc_remove,
};
-
-static int __init ssc_init(void)
-{
- return platform_driver_probe(&ssc_driver, ssc_probe);
-}
-module_init(ssc_init);
-
-static void __exit ssc_exit(void)
-{
- platform_driver_unregister(&ssc_driver);
-}
-module_exit(ssc_exit);
+module_platform_driver(ssc_driver);
MODULE_AUTHOR("Hans-Christian Egtvedt <hcegtvedt@atmel.com>");
MODULE_DESCRIPTION("SSC driver for Atmel AVR32 and AT91");