Messages in this thread | | | Date | Thu, 25 Jun 2015 16:40:47 +0530 | From | Vaibhav Hiremath <> | Subject | Re: [PATCH-v4 1/3] mfd: 88pm800: Add device tree support |
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On Thursday 25 June 2015 03:49 PM, Lee Jones wrote: > On Thu, 25 Jun 2015, Vaibhav Hiremath wrote: > >> Add DT support to the 88pm800 driver, along with compatible >> field for it's sub-devices (rtc, onkey and regulator) >> >> Signed-off-by: Chao Xie <chao.xie@marvell.com> >> Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org> >> --- >> drivers/mfd/88pm800.c | 23 +++++++++++++++++++++++ >> 1 file changed, 23 insertions(+) >> >> diff --git a/drivers/mfd/88pm800.c b/drivers/mfd/88pm800.c >> index 841717a..40fd014 100644 >> --- a/drivers/mfd/88pm800.c >> +++ b/drivers/mfd/88pm800.c >> @@ -27,6 +27,7 @@ >> #include <linux/mfd/core.h> >> #include <linux/mfd/88pm80x.h> >> #include <linux/slab.h> >> +#include <linux/of_device.h> >> >> /* Interrupt Registers */ >> #define PM800_INT_STATUS1 (0x05) >> @@ -121,6 +122,11 @@ static const struct i2c_device_id pm80x_id_table[] = { >> }; >> MODULE_DEVICE_TABLE(i2c, pm80x_id_table); >> >> +static const struct of_device_id pm80x_of_match_table[] = { >> + { .compatible = "marvell,88pm800", }, >> + {}, >> +}; >> + >> static struct resource rtc_resources[] = { >> { >> .name = "88pm80x-rtc", >> @@ -133,6 +139,7 @@ static struct resource rtc_resources[] = { >> static struct mfd_cell rtc_devs[] = { >> { >> .name = "88pm80x-rtc", >> + .of_compatible = "marvell,88pm80x-rtc", >> .num_resources = ARRAY_SIZE(rtc_resources), >> .resources = &rtc_resources[0], >> .id = -1, >> @@ -151,6 +158,7 @@ static struct resource onkey_resources[] = { >> static const struct mfd_cell onkey_devs[] = { >> { >> .name = "88pm80x-onkey", >> + .of_compatible = "marvell,88pm80x-onkey", >> .num_resources = 1, >> .resources = &onkey_resources[0], >> .id = -1, >> @@ -160,6 +168,7 @@ static const struct mfd_cell onkey_devs[] = { >> static const struct mfd_cell regulator_devs[] = { >> { >> .name = "88pm80x-regulator", >> + .of_compatible = "marvell,88pm80x-regulator", >> .id = -1, >> }, >> }; >> @@ -544,8 +553,21 @@ static int pm800_probe(struct i2c_client *client, >> int ret = 0; >> struct pm80x_chip *chip; >> struct pm80x_platform_data *pdata = dev_get_platdata(&client->dev); >> + struct device_node *np = client->dev.of_node; >> struct pm80x_subchip *subchip; >> >> + if (!pdata && !np) { >> + dev_err(&client->dev, >> + "pm80x requires platform data or of_node\n"); >> + return -EINVAL; >> + } >> + >> + if (!pdata) { >> + pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL); >> + if (!pdata) >> + return -ENOMEM; >> + } > > Why have you allocated data for pdata, then done nothing with it? >
Not in this patch, but subsequent patches would use it.
Thanks, Vaibhav
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