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greybus: sdio: convert vdd kernel values to greybus 

We need to convert vdd kernel values to greybus ones. And we get this by
shifting the kernel values by 8.

Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Rui Miguel Silva 2016-07-19 15:41:29 +01:00 committed by Greg Kroah-Hartman
parent 56c78715ea
commit 484a4d6677
1 changed files with 8 additions and 1 deletions
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9
drivers/staging/greybus/sdio.c
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@ -43,6 +43,9 @@ struct gb_sdio_host {
#define GB_SDIO_RSP_R1B (GB_SDIO_RSP_PRESENT | GB_SDIO_RSP_CRC | \
GB_SDIO_RSP_OPCODE | GB_SDIO_RSP_BUSY)
/* kernel vdd starts at 0x80 and we need to translate to greybus ones 0x01 */
#define GB_SDIO_VDD_SHIFT 8
static inline bool single_op(struct mmc_command *cmd)
{
uint32_t opcode = cmd->opcode;
@ -574,10 +577,14 @@ static void gb_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
u8 timing;
u8 signal_voltage;
u8 drv_type;
u32 vdd = 0;
mutex_lock(&host->lock);
request.clock = cpu_to_le32(ios->clock);
request.vdd = cpu_to_le32(1 << ios->vdd);
if (ios->vdd)
vdd = 1 << (ios->vdd - GB_SDIO_VDD_SHIFT);
request.vdd = cpu_to_le32(vdd);
request.bus_mode = (ios->bus_mode == MMC_BUSMODE_OPENDRAIN ?
GB_SDIO_BUSMODE_OPENDRAIN :