From e7ec014a47e4d68fc01561d0541a50650646317c Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Tue, 12 Jun 2012 01:10:02 -0700 Subject: [PATCH] Input: twl6040-vibra - update for device tree support The twl6040 DT support implementation has been changed from the originally planned. None of the child devices going to have compatible_of property which means that the child devices of twl6040 will be created as traditional MFD devices. The mfd core driver will decide (based on the DT blob) to create a device for the twl6040-vibra or not. If the DT blob has 'vibra' section the device will be created without pdata. In this case the vibra driver will reach up to the parent node to get the needed properties. With DT booted kernel we no longer be able to link the regulators to the vibra driver, they can be only linked to the MFD device (probed via DT). From the vibra driver we ned to use pdev->dev.parent to get the regulators. Signed-off-by: Peter Ujfalusi Signed-off-by: Dmitry Torokhov --- .../bindings/input/twl6040-vibra.txt | 37 ---------------- drivers/input/misc/twl6040-vibra.c | 42 +++++++++++-------- 2 files changed, 24 insertions(+), 55 deletions(-) delete mode 100644 Documentation/devicetree/bindings/input/twl6040-vibra.txt diff --git a/Documentation/devicetree/bindings/input/twl6040-vibra.txt b/Documentation/devicetree/bindings/input/twl6040-vibra.txt deleted file mode 100644 index 5b1918b818fb..000000000000 --- a/Documentation/devicetree/bindings/input/twl6040-vibra.txt +++ /dev/null @@ -1,37 +0,0 @@ -Vibra driver for the twl6040 family - -The vibra driver is a child of the twl6040 MFD dirver. -Documentation/devicetree/bindings/mfd/twl6040.txt - -Required properties: -- compatible : Must be "ti,twl6040-vibra"; -- interrupts: 4, Vibra overcurrent interrupt -- vddvibl-supply: Regulator supplying the left vibra motor -- vddvibr-supply: Regulator supplying the right vibra motor -- vibldrv_res: Board specific left driver resistance -- vibrdrv_res: Board specific right driver resistance -- viblmotor_res: Board specific left motor resistance -- vibrmotor_res: Board specific right motor resistance - -Optional properties: -- vddvibl_uV: If the vddvibl default voltage need to be changed -- vddvibr_uV: If the vddvibr default voltage need to be changed - -Example: -/* - * 8-channel high quality low-power audio codec - * http://www.ti.com/lit/ds/symlink/twl6040.pdf - */ -twl6040: twl6040@4b { - ... - twl6040_vibra: twl6040@1 { - compatible = "ti,twl6040-vibra"; - interrupts = <4>; - vddvibl-supply = <&vbat>; - vddvibr-supply = <&vbat>; - vibldrv_res = <8>; - vibrdrv_res = <3>; - viblmotor_res = <10>; - vibrmotor_res = <10>; - }; -}; diff --git a/drivers/input/misc/twl6040-vibra.c b/drivers/input/misc/twl6040-vibra.c index c34f6c0371c4..c8a288ae1d5b 100644 --- a/drivers/input/misc/twl6040-vibra.c +++ b/drivers/input/misc/twl6040-vibra.c @@ -251,7 +251,6 @@ static int twl6040_vibra_suspend(struct device *dev) return 0; } - #endif static SIMPLE_DEV_PM_OPS(twl6040_vibra_pm_ops, twl6040_vibra_suspend, NULL); @@ -259,13 +258,19 @@ static SIMPLE_DEV_PM_OPS(twl6040_vibra_pm_ops, twl6040_vibra_suspend, NULL); static int __devinit twl6040_vibra_probe(struct platform_device *pdev) { struct twl6040_vibra_data *pdata = pdev->dev.platform_data; - struct device_node *node = pdev->dev.of_node; + struct device *twl6040_core_dev = pdev->dev.parent; + struct device_node *twl6040_core_node = NULL; struct vibra_info *info; int vddvibl_uV = 0; int vddvibr_uV = 0; int ret; - if (!pdata && !node) { +#ifdef CONFIG_OF + twl6040_core_node = of_find_node_by_name(twl6040_core_dev->of_node, + "vibra"); +#endif + + if (!pdata && !twl6040_core_node) { dev_err(&pdev->dev, "platform_data not available\n"); return -EINVAL; } @@ -287,14 +292,18 @@ static int __devinit twl6040_vibra_probe(struct platform_device *pdev) vddvibl_uV = pdata->vddvibl_uV; vddvibr_uV = pdata->vddvibr_uV; } else { - of_property_read_u32(node, "vibldrv_res", &info->vibldrv_res); - of_property_read_u32(node, "vibrdrv_res", &info->vibrdrv_res); - of_property_read_u32(node, "viblmotor_res", + of_property_read_u32(twl6040_core_node, "ti,vibldrv-res", + &info->vibldrv_res); + of_property_read_u32(twl6040_core_node, "ti,vibrdrv-res", + &info->vibrdrv_res); + of_property_read_u32(twl6040_core_node, "ti,viblmotor-res", &info->viblmotor_res); - of_property_read_u32(node, "vibrmotor_res", + of_property_read_u32(twl6040_core_node, "ti,vibrmotor-res", &info->vibrmotor_res); - of_property_read_u32(node, "vddvibl_uV", &vddvibl_uV); - of_property_read_u32(node, "vddvibr_uV", &vddvibr_uV); + of_property_read_u32(twl6040_core_node, "ti,vddvibl-uV", + &vddvibl_uV); + of_property_read_u32(twl6040_core_node, "ti,vddvibr-uV", + &vddvibr_uV); } if ((!info->vibldrv_res && !info->viblmotor_res) || @@ -351,8 +360,12 @@ static int __devinit twl6040_vibra_probe(struct platform_device *pdev) info->supplies[0].supply = "vddvibl"; info->supplies[1].supply = "vddvibr"; - ret = regulator_bulk_get(info->dev, ARRAY_SIZE(info->supplies), - info->supplies); + /* + * When booted with Device tree the regulators are attached to the + * parent device (twl6040 MFD core) + */ + ret = regulator_bulk_get(pdata ? info->dev : twl6040_core_dev, + ARRAY_SIZE(info->supplies), info->supplies); if (ret) { dev_err(info->dev, "couldn't get regulators %d\n", ret); goto err_regulator; @@ -418,12 +431,6 @@ static int __devexit twl6040_vibra_remove(struct platform_device *pdev) return 0; } -static const struct of_device_id twl6040_vibra_of_match[] = { - {.compatible = "ti,twl6040-vibra", }, - { }, -}; -MODULE_DEVICE_TABLE(of, twl6040_vibra_of_match); - static struct platform_driver twl6040_vibra_driver = { .probe = twl6040_vibra_probe, .remove = __devexit_p(twl6040_vibra_remove), @@ -431,7 +438,6 @@ static struct platform_driver twl6040_vibra_driver = { .name = "twl6040-vibra", .owner = THIS_MODULE, .pm = &twl6040_vibra_pm_ops, - .of_match_table = twl6040_vibra_of_match, }, }; module_platform_driver(twl6040_vibra_driver);