Re: [PATCH v2 1/2] mfd: rtsx: add func to split u32 into register

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Fri, 28 Nov 2014, micky_ching@xxxxxxxxxxxxxx wrote:

> From: Micky Ching <micky_ching@xxxxxxxxxxxxxx>
> 
> Add helper function to write u32 to registers, if we want to put u32
> value to 4 continuous register, this can help us reduce tedious work.
> 
> Signed-off-by: Micky Ching <micky_ching@xxxxxxxxxxxxxx>
> ---
>  include/linux/mfd/rtsx_pci.h | 9 +++++++++
>  1 file changed, 9 insertions(+)

Does this supersede patch Dan was commenting on?

> diff --git a/include/linux/mfd/rtsx_pci.h b/include/linux/mfd/rtsx_pci.h
> index 74346d5..9234449 100644
> --- a/include/linux/mfd/rtsx_pci.h
> +++ b/include/linux/mfd/rtsx_pci.h
> @@ -558,6 +558,7 @@
>  #define SD_SAMPLE_POINT_CTL		0xFDA7
>  #define SD_PUSH_POINT_CTL		0xFDA8
>  #define SD_CMD0				0xFDA9
> +#define   SD_CMD_START			0x40
>  #define SD_CMD1				0xFDAA
>  #define SD_CMD2				0xFDAB
>  #define SD_CMD3				0xFDAC
> @@ -967,4 +968,12 @@ static inline u8 *rtsx_pci_get_cmd_data(struct rtsx_pcr *pcr)
>  	return (u8 *)(pcr->host_cmds_ptr);
>  }
>  
> +static inline void rtsx_pci_write_be32(struct rtsx_pcr *pcr, u16 reg, u32 val)
> +{
> +	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, reg,     0xFF, val >> 24);
> +	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, reg + 1, 0xFF, val >> 16);
> +	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, reg + 2, 0xFF, val >> 8);
> +	rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, reg + 3, 0xFF, val);
> +}
> +
>  #endif

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
--
To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux USB Devel]     [Linux Media]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux