diff options
author | Lee Jones <lee.jones@linaro.org> | 2012-05-17 17:45:13 +0400 |
---|---|---|
committer | Samuel Ortiz <sameo@linux.intel.com> | 2012-05-20 19:27:10 +0400 |
commit | 6bc4a568414caab05424b702165a732177daccd0 (patch) | |
tree | f51384e3f360be98d6e09885e2323c4a1df6b619 /drivers/mfd/ab8500-core.c | |
parent | d28f1db8187dd1ddc1fa6f380ff0402cf8e4d44d (diff) | |
download | linux-6bc4a568414caab05424b702165a732177daccd0.tar.xz |
mfd: Enable Device Tree for ab8500-core driver
This patch will allow the ab8500-core driver to be probed and set up
when booting when Device Tree is enabled. This includes platform ID
look-up which identifies the machine it is currently running on. If
we are undergoing a DT enabled boot, we will refuse to setup each of
the other ab8500-* devices, as they will be probed individually by DT.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd/ab8500-core.c')
-rw-r--r-- | drivers/mfd/ab8500-core.c | 71 |
1 files changed, 50 insertions, 21 deletions
diff --git a/drivers/mfd/ab8500-core.c b/drivers/mfd/ab8500-core.c index fb807ab8a2c7..dac0e2998603 100644 --- a/drivers/mfd/ab8500-core.c +++ b/drivers/mfd/ab8500-core.c @@ -20,6 +20,8 @@ #include <linux/mfd/abx500/ab8500.h> #include <linux/mfd/dbx500-prcmu.h> #include <linux/regulator/ab8500.h> +#include <linux/of.h> +#include <linux/of_device.h> /* * Interrupt register offsets @@ -1205,11 +1207,20 @@ static struct attribute_group ab9540_attr_group = { .attrs = ab9540_sysfs_entries, }; +static const struct of_device_id ab8500_match[] = { + { + .compatible = "stericsson,ab8500", + .data = (void *)AB8500_VERSION_AB8500, + }, + {}, +}; + static int __devinit ab8500_probe(struct platform_device *pdev) { struct ab8500_platform_data *plat = dev_get_platdata(&pdev->dev); const struct platform_device_id *platid = platform_get_device_id(pdev); - enum ab8500_version version = platid->driver_data; + enum ab8500_version version = AB8500_VERSION_UNDEFINED; + struct device_node *np = pdev->dev.of_node; struct ab8500 *ab8500; struct resource *resource; int ret; @@ -1222,6 +1233,14 @@ static int __devinit ab8500_probe(struct platform_device *pdev) if (plat) ab8500->irq_base = plat->irq_base; + else if (np) + ret = of_property_read_u32(np, "stericsson,irq-base", &ab8500->irq_base); + + if (!ab8500->irq_base) { + dev_info(&pdev->dev, "couldn't find irq-base\n"); + ret = -EINVAL; + goto out_free_ab8500; + } ab8500->dev = &pdev->dev; @@ -1243,6 +1262,12 @@ static int __devinit ab8500_probe(struct platform_device *pdev) platform_set_drvdata(pdev, ab8500); + if (platid) + version = platid->driver_data; + else if (np) + version = (unsigned int) + of_match_device(ab8500_match, &pdev->dev)->data; + if (version != AB8500_VERSION_UNDEFINED) ab8500->version = version; else { @@ -1348,29 +1373,32 @@ static int __devinit ab8500_probe(struct platform_device *pdev) goto out_removeirq; } - ret = mfd_add_devices(ab8500->dev, 0, abx500_common_devs, - ARRAY_SIZE(abx500_common_devs), NULL, - ab8500->irq_base); - - if (ret) - goto out_freeirq; + if (!np) { + ret = mfd_add_devices(ab8500->dev, 0, abx500_common_devs, + ARRAY_SIZE(abx500_common_devs), NULL, + ab8500->irq_base); - if (is_ab9540(ab8500)) - ret = mfd_add_devices(ab8500->dev, 0, ab9540_devs, - ARRAY_SIZE(ab9540_devs), NULL, - ab8500->irq_base); - else - ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs, - ARRAY_SIZE(ab8500_devs), NULL, - ab8500->irq_base); + if (ret) + goto out_freeirq; - if (is_ab9540(ab8500) || is_ab8505(ab8500)) - ret = mfd_add_devices(ab8500->dev, 0, ab9540_ab8505_devs, - ARRAY_SIZE(ab9540_ab8505_devs), NULL, - ab8500->irq_base); + if (is_ab9540(ab8500)) + ret = mfd_add_devices(ab8500->dev, 0, ab9540_devs, + ARRAY_SIZE(ab9540_devs), NULL, + ab8500->irq_base); + else + ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs, + ARRAY_SIZE(ab8500_devs), NULL, + ab8500->irq_base); + if (ret) + goto out_freeirq; - if (ret) - goto out_freeirq; + if (is_ab9540(ab8500) || is_ab8505(ab8500)) + ret = mfd_add_devices(ab8500->dev, 0, ab9540_ab8505_devs, + ARRAY_SIZE(ab9540_ab8505_devs), NULL, + ab8500->irq_base); + if (ret) + goto out_freeirq; + } if (!no_bm) { /* Add battery management devices */ @@ -1440,6 +1468,7 @@ static struct platform_driver ab8500_core_driver = { .driver = { .name = "ab8500-core", .owner = THIS_MODULE, + .of_match_table = ab8500_match, }, .probe = ab8500_probe, .remove = __devexit_p(ab8500_remove), |