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greybus: sdio: send data block details at command request 

If SDIO request include data to be transfer send details (data blocks
and block size) in command request, as it seems some controllers need
this info prior to set the registers correctly.

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 2015-10-15 23:56:51 +01:00 committed by Greg Kroah-Hartman
parent 1ec5843ee9
commit 10ed193876
2 changed files with 9 additions and 1 deletions
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2
drivers/staging/greybus/greybus_protocols.h
View File

@ -1088,6 +1088,8 @@ struct gb_sdio_command_request {
#define GB_SDIO_CMD_BCR 0x03
__le32 cmd_arg;
__le16 data_blocks;
__le16 data_blksz;
} __packed;
struct gb_sdio_command_response {

8
drivers/staging/greybus/sdio.c
View File

@ -373,8 +373,9 @@ out:
static int gb_sdio_command(struct gb_sdio_host *host, struct mmc_command *cmd)
{
struct gb_sdio_command_request request;
struct gb_sdio_command_request request = {0};
struct gb_sdio_command_response response;
struct mmc_data *data = host->mrq->data;
u8 cmd_flags;
u8 cmd_type;
int i;
@ -427,6 +428,11 @@ static int gb_sdio_command(struct gb_sdio_host *host, struct mmc_command *cmd)
request.cmd_flags = cmd_flags;
request.cmd_type = cmd_type;
request.cmd_arg = cpu_to_le32(cmd->arg);
/* some controllers need to know at command time data details */
if (data) {
request.data_blocks = cpu_to_le16(data->blocks);
request.data_blksz = cpu_to_le16(data->blksz);
}
ret = gb_operation_sync(host->connection, GB_SDIO_TYPE_COMMAND,
&request, sizeof(request), &response,