diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/mfd/pm8921-core.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/mfd/pm8921-core.c | 212 |
1 files changed, 0 insertions, 212 deletions
diff --git a/ANDROID_3.4.5/drivers/mfd/pm8921-core.c b/ANDROID_3.4.5/drivers/mfd/pm8921-core.c deleted file mode 100644 index e873b157..00000000 --- a/ANDROID_3.4.5/drivers/mfd/pm8921-core.c +++ /dev/null @@ -1,212 +0,0 @@ -/* - * Copyright (c) 2011, Code Aurora Forum. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 and - * only version 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#define pr_fmt(fmt) "%s: " fmt, __func__ - -#include <linux/kernel.h> -#include <linux/platform_device.h> -#include <linux/slab.h> -#include <linux/err.h> -#include <linux/msm_ssbi.h> -#include <linux/mfd/core.h> -#include <linux/mfd/pm8xxx/pm8921.h> -#include <linux/mfd/pm8xxx/core.h> - -#define REG_HWREV 0x002 /* PMIC4 revision */ -#define REG_HWREV_2 0x0E8 /* PMIC4 revision 2 */ - -struct pm8921 { - struct device *dev; - struct pm_irq_chip *irq_chip; -}; - -static int pm8921_readb(const struct device *dev, u16 addr, u8 *val) -{ - const struct pm8xxx_drvdata *pm8921_drvdata = dev_get_drvdata(dev); - const struct pm8921 *pmic = pm8921_drvdata->pm_chip_data; - - return msm_ssbi_read(pmic->dev->parent, addr, val, 1); -} - -static int pm8921_writeb(const struct device *dev, u16 addr, u8 val) -{ - const struct pm8xxx_drvdata *pm8921_drvdata = dev_get_drvdata(dev); - const struct pm8921 *pmic = pm8921_drvdata->pm_chip_data; - - return msm_ssbi_write(pmic->dev->parent, addr, &val, 1); -} - -static int pm8921_read_buf(const struct device *dev, u16 addr, u8 *buf, - int cnt) -{ - const struct pm8xxx_drvdata *pm8921_drvdata = dev_get_drvdata(dev); - const struct pm8921 *pmic = pm8921_drvdata->pm_chip_data; - - return msm_ssbi_read(pmic->dev->parent, addr, buf, cnt); -} - -static int pm8921_write_buf(const struct device *dev, u16 addr, u8 *buf, - int cnt) -{ - const struct pm8xxx_drvdata *pm8921_drvdata = dev_get_drvdata(dev); - const struct pm8921 *pmic = pm8921_drvdata->pm_chip_data; - - return msm_ssbi_write(pmic->dev->parent, addr, buf, cnt); -} - -static int pm8921_read_irq_stat(const struct device *dev, int irq) -{ - const struct pm8xxx_drvdata *pm8921_drvdata = dev_get_drvdata(dev); - const struct pm8921 *pmic = pm8921_drvdata->pm_chip_data; - - return pm8xxx_get_irq_stat(pmic->irq_chip, irq); -} - -static struct pm8xxx_drvdata pm8921_drvdata = { - .pmic_readb = pm8921_readb, - .pmic_writeb = pm8921_writeb, - .pmic_read_buf = pm8921_read_buf, - .pmic_write_buf = pm8921_write_buf, - .pmic_read_irq_stat = pm8921_read_irq_stat, -}; - -static int __devinit pm8921_add_subdevices(const struct pm8921_platform_data - *pdata, - struct pm8921 *pmic, - u32 rev) -{ - int ret = 0, irq_base = 0; - struct pm_irq_chip *irq_chip; - - if (pdata->irq_pdata) { - pdata->irq_pdata->irq_cdata.nirqs = PM8921_NR_IRQS; - pdata->irq_pdata->irq_cdata.rev = rev; - irq_base = pdata->irq_pdata->irq_base; - irq_chip = pm8xxx_irq_init(pmic->dev, pdata->irq_pdata); - - if (IS_ERR(irq_chip)) { - pr_err("Failed to init interrupts ret=%ld\n", - PTR_ERR(irq_chip)); - return PTR_ERR(irq_chip); - } - pmic->irq_chip = irq_chip; - } - return ret; -} - -static int __devinit pm8921_probe(struct platform_device *pdev) -{ - const struct pm8921_platform_data *pdata = pdev->dev.platform_data; - struct pm8921 *pmic; - int rc; - u8 val; - u32 rev; - - if (!pdata) { - pr_err("missing platform data\n"); - return -EINVAL; - } - - pmic = kzalloc(sizeof(struct pm8921), GFP_KERNEL); - if (!pmic) { - pr_err("Cannot alloc pm8921 struct\n"); - return -ENOMEM; - } - - /* Read PMIC chip revision */ - rc = msm_ssbi_read(pdev->dev.parent, REG_HWREV, &val, sizeof(val)); - if (rc) { - pr_err("Failed to read hw rev reg %d:rc=%d\n", REG_HWREV, rc); - goto err_read_rev; - } - pr_info("PMIC revision 1: %02X\n", val); - rev = val; - - /* Read PMIC chip revision 2 */ - rc = msm_ssbi_read(pdev->dev.parent, REG_HWREV_2, &val, sizeof(val)); - if (rc) { - pr_err("Failed to read hw rev 2 reg %d:rc=%d\n", - REG_HWREV_2, rc); - goto err_read_rev; - } - pr_info("PMIC revision 2: %02X\n", val); - rev |= val << BITS_PER_BYTE; - - pmic->dev = &pdev->dev; - pm8921_drvdata.pm_chip_data = pmic; - platform_set_drvdata(pdev, &pm8921_drvdata); - - rc = pm8921_add_subdevices(pdata, pmic, rev); - if (rc) { - pr_err("Cannot add subdevices rc=%d\n", rc); - goto err; - } - - /* gpio might not work if no irq device is found */ - WARN_ON(pmic->irq_chip == NULL); - - return 0; - -err: - mfd_remove_devices(pmic->dev); - platform_set_drvdata(pdev, NULL); -err_read_rev: - kfree(pmic); - return rc; -} - -static int __devexit pm8921_remove(struct platform_device *pdev) -{ - struct pm8xxx_drvdata *drvdata; - struct pm8921 *pmic = NULL; - - drvdata = platform_get_drvdata(pdev); - if (drvdata) - pmic = drvdata->pm_chip_data; - if (pmic) - mfd_remove_devices(pmic->dev); - if (pmic->irq_chip) { - pm8xxx_irq_exit(pmic->irq_chip); - pmic->irq_chip = NULL; - } - platform_set_drvdata(pdev, NULL); - kfree(pmic); - - return 0; -} - -static struct platform_driver pm8921_driver = { - .probe = pm8921_probe, - .remove = __devexit_p(pm8921_remove), - .driver = { - .name = "pm8921-core", - .owner = THIS_MODULE, - }, -}; - -static int __init pm8921_init(void) -{ - return platform_driver_register(&pm8921_driver); -} -subsys_initcall(pm8921_init); - -static void __exit pm8921_exit(void) -{ - platform_driver_unregister(&pm8921_driver); -} -module_exit(pm8921_exit); - -MODULE_LICENSE("GPL v2"); -MODULE_DESCRIPTION("PMIC 8921 core driver"); -MODULE_VERSION("1.0"); -MODULE_ALIAS("platform:pm8921-core"); |