diff options
Diffstat (limited to 'drivers/mfd/ab8500-sysctrl.c')
| -rw-r--r-- | drivers/mfd/ab8500-sysctrl.c | 38 |
1 files changed, 22 insertions, 16 deletions
diff --git a/drivers/mfd/ab8500-sysctrl.c b/drivers/mfd/ab8500-sysctrl.c index 7c773797d26..6ac63a05893 100644 --- a/drivers/mfd/ab8500-sysctrl.c +++ b/drivers/mfd/ab8500-sysctrl.c @@ -28,6 +28,11 @@ void ab8500_power_off(void) struct power_supply *psy; int ret; + if (sysctrl_dev == NULL) { + pr_err("%s: sysctrl not initialized\n", __func__); + return; + } + /* * If we have a charger connected and we're powering off, * reboot into charge-only mode. @@ -85,7 +90,7 @@ int ab8500_sysctrl_read(u16 reg, u8 *value) u8 bank; if (sysctrl_dev == NULL) - return -EAGAIN; + return -EINVAL; bank = (reg >> 8); if (!valid_bank(bank)) @@ -101,7 +106,7 @@ int ab8500_sysctrl_write(u16 reg, u8 mask, u8 value) u8 bank; if (sysctrl_dev == NULL) - return -EAGAIN; + return -EINVAL; bank = (reg >> 8); if (!valid_bank(bank)) @@ -116,31 +121,32 @@ static int ab8500_sysctrl_probe(struct platform_device *pdev) { struct ab8500_platform_data *plat; struct ab8500_sysctrl_platform_data *pdata; + int ret, i, j; - sysctrl_dev = &pdev->dev; plat = dev_get_platdata(pdev->dev.parent); + + if (!(plat && plat->sysctrl)) + return -EINVAL; + if (plat->pm_power_off) pm_power_off = ab8500_power_off; pdata = plat->sysctrl; - if (pdata) { - int ret, i, j; - for (i = AB8500_SYSCLKREQ1RFCLKBUF; - i <= AB8500_SYSCLKREQ8RFCLKBUF; i++) { - j = i - AB8500_SYSCLKREQ1RFCLKBUF; - ret = ab8500_sysctrl_write(i, 0xff, - pdata->initial_req_buf_config[j]); - dev_dbg(&pdev->dev, + for (i = AB8500_SYSCLKREQ1RFCLKBUF; + i <= AB8500_SYSCLKREQ8RFCLKBUF; i++) { + j = i - AB8500_SYSCLKREQ1RFCLKBUF; + ret = ab8500_sysctrl_write(i, 0xff, + pdata->initial_req_buf_config[j]); + dev_dbg(&pdev->dev, "Setting SysClkReq%dRfClkBuf 0x%X\n", j + 1, pdata->initial_req_buf_config[j]); - if (ret < 0) { - dev_err(&pdev->dev, - "unable to set sysClkReq%dRfClkBuf: " - "%d\n", j + 1, ret); - } + if (ret < 0) { + dev_err(&pdev->dev, + "unable to set sysClkReq%dRfClkBuf: " + "%d\n", j + 1, ret); } } |