* [email protected] <[email protected]> [100211 00:09]:
> From: Vaibhav Hiremath <[email protected]>
>
> Add platform hook-up interface to support RTC driver (S35390A).
>
> Signed-off-by: Vaibhav Hiremath <[email protected]>
> ---
> arch/arm/mach-omap2/board-am3517evm.c | 25 +++++++++++++++++++++++++
> 1 files changed, 25 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/board-am3517evm.c
> b/arch/arm/mach-omap2/board-am3517evm.c
> index 247c700..d9f487f 100644
> --- a/arch/arm/mach-omap2/board-am3517evm.c
> +++ b/arch/arm/mach-omap2/board-am3517evm.c
> @@ -174,6 +174,18 @@ struct platform_device am3517_evm_dss_device = {
> .platform_data = &am3517_evm_dss_data,
> },
> };
> +/*
> + * RTC - S35390A
> + */
> +#define GPIO_RTCS35390A_IRQ 55
Please change this into standard
#define GPIO_RTCS35390A_IRQ 55
instead of having a tab between #define and GPIO...
> +static struct i2c_board_info __initdata am3517evm_i2c_boardinfo[] = {
> + {
> + I2C_BOARD_INFO("s35390a", 0x30),
> + .type = "s35390a",
> + },
> +};
> +
>
> static int __init am3517_evm_i2c_init(void)
> {
> @@ -235,6 +247,19 @@ static void __init am3517_evm_init(void)
> usb_ehci_init(&ehci_pdata);
> /* DSS */
> am3517_evm_display_init();
> +
> + /* RTC - S35390A */
> + omap_mux_init_gpio(55, OMAP_PIN_INPUT_PULLUP);
> + if (gpio_request(GPIO_RTCS35390A_IRQ, "rtcs35390a-irq") < 0)
> + printk(KERN_WARNING "failed to request GPIO#%d\n",
> + GPIO_RTCS35390A_IRQ);
Here you need to check the return value before trying to change
the GPIO value. In general it's preferred to use:
int err;
err = gpio_request()
if (err < 0)
return err;
...
> + if (gpio_direction_input(GPIO_RTCS35390A_IRQ))
> + printk(KERN_WARNING "GPIO#%d cannot be configured as "
> + "input\n", GPIO_RTCS35390A_IRQ);
And only after that call gpio_direction_input.
Regards,
Tony
> + am3517evm_i2c_boardinfo[0].irq = gpio_to_irq(GPIO_RTCS35390A_IRQ);
> +
> + i2c_register_board_info(1, am3517evm_i2c_boardinfo,
> + ARRAY_SIZE(am3517evm_i2c_boardinfo));
> }
>
> static void __init am3517_evm_map_io(void)
> --
> 1.6.2.4
>
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