diff options
Diffstat (limited to 'drivers/mmc/core/mmc_ops.c')
-rw-r--r-- | drivers/mmc/core/mmc_ops.c | 80 |
1 files changed, 32 insertions, 48 deletions
diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c index f3b22bf..845ce7c 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -23,12 +23,10 @@ static int _mmc_select_card(struct mmc_host *host, struct mmc_card *card) { int err; - struct mmc_command cmd; + struct mmc_command cmd = {0}; BUG_ON(!host); - memset(&cmd, 0, sizeof(struct mmc_command)); - cmd.opcode = MMC_SELECT_CARD; if (card) { @@ -60,15 +58,13 @@ int mmc_deselect_cards(struct mmc_host *host) int mmc_card_sleepawake(struct mmc_host *host, int sleep) { - struct mmc_command cmd; + struct mmc_command cmd = {0}; struct mmc_card *card = host->card; int err; if (sleep) mmc_deselect_cards(host); - memset(&cmd, 0, sizeof(struct mmc_command)); - cmd.opcode = MMC_SLEEP_AWAKE; cmd.arg = card->rca << 16; if (sleep) @@ -97,7 +93,7 @@ int mmc_card_sleepawake(struct mmc_host *host, int sleep) int mmc_go_idle(struct mmc_host *host) { int err; - struct mmc_command cmd; + struct mmc_command cmd = {0}; /* * Non-SPI hosts need to prevent chipselect going active during @@ -113,8 +109,6 @@ int mmc_go_idle(struct mmc_host *host) mmc_delay(1); } - memset(&cmd, 0, sizeof(struct mmc_command)); - cmd.opcode = MMC_GO_IDLE_STATE; cmd.arg = 0; cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_NONE | MMC_CMD_BC; @@ -135,13 +129,11 @@ int mmc_go_idle(struct mmc_host *host) int mmc_send_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr) { - struct mmc_command cmd; + struct mmc_command cmd = {0}; int i, err = 0; BUG_ON(!host); - memset(&cmd, 0, sizeof(struct mmc_command)); - cmd.opcode = MMC_SEND_OP_COND; cmd.arg = mmc_host_is_spi(host) ? 0 : ocr; cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R3 | MMC_CMD_BCR; @@ -178,13 +170,11 @@ int mmc_send_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr) int mmc_all_send_cid(struct mmc_host *host, u32 *cid) { int err; - struct mmc_command cmd; + struct mmc_command cmd = {0}; BUG_ON(!host); BUG_ON(!cid); - memset(&cmd, 0, sizeof(struct mmc_command)); - cmd.opcode = MMC_ALL_SEND_CID; cmd.arg = 0; cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR; @@ -201,13 +191,11 @@ int mmc_all_send_cid(struct mmc_host *host, u32 *cid) int mmc_set_relative_addr(struct mmc_card *card) { int err; - struct mmc_command cmd; + struct mmc_command cmd = {0}; BUG_ON(!card); BUG_ON(!card->host); - memset(&cmd, 0, sizeof(struct mmc_command)); - cmd.opcode = MMC_SET_RELATIVE_ADDR; cmd.arg = card->rca << 16; cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; @@ -223,13 +211,11 @@ static int mmc_send_cxd_native(struct mmc_host *host, u32 arg, u32 *cxd, int opcode) { int err; - struct mmc_command cmd; + struct mmc_command cmd = {0}; BUG_ON(!host); BUG_ON(!cxd); - memset(&cmd, 0, sizeof(struct mmc_command)); - cmd.opcode = opcode; cmd.arg = arg; cmd.flags = MMC_RSP_R2 | MMC_CMD_AC; @@ -247,9 +233,9 @@ static int mmc_send_cxd_data(struct mmc_card *card, struct mmc_host *host, u32 opcode, void *buf, unsigned len) { - struct mmc_request mrq; - struct mmc_command cmd; - struct mmc_data data; + struct mmc_request mrq = {0}; + struct mmc_command cmd = {0}; + struct mmc_data data = {0}; struct scatterlist sg; void *data_buf; @@ -260,10 +246,6 @@ mmc_send_cxd_data(struct mmc_card *card, struct mmc_host *host, if (data_buf == NULL) return -ENOMEM; - memset(&mrq, 0, sizeof(struct mmc_request)); - memset(&cmd, 0, sizeof(struct mmc_command)); - memset(&data, 0, sizeof(struct mmc_data)); - mrq.cmd = &cmd; mrq.data = &data; @@ -355,11 +337,9 @@ int mmc_send_ext_csd(struct mmc_card *card, u8 *ext_csd) int mmc_spi_read_ocr(struct mmc_host *host, int highcap, u32 *ocrp) { - struct mmc_command cmd; + struct mmc_command cmd = {0}; int err; - memset(&cmd, 0, sizeof(struct mmc_command)); - cmd.opcode = MMC_SPI_READ_OCR; cmd.arg = highcap ? (1 << 30) : 0; cmd.flags = MMC_RSP_SPI_R3; @@ -372,11 +352,9 @@ int mmc_spi_read_ocr(struct mmc_host *host, int highcap, u32 *ocrp) int mmc_spi_set_crc(struct mmc_host *host, int use_crc) { - struct mmc_command cmd; + struct mmc_command cmd = {0}; int err; - memset(&cmd, 0, sizeof(struct mmc_command)); - cmd.opcode = MMC_SPI_CRC_ON_OFF; cmd.flags = MMC_RSP_SPI_R1; cmd.arg = use_crc; @@ -387,23 +365,34 @@ int mmc_spi_set_crc(struct mmc_host *host, int use_crc) return err; } -int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value) +/** + * mmc_switch - modify EXT_CSD register + * @card: the MMC card associated with the data transfer + * @set: cmd set values + * @index: EXT_CSD register index + * @value: value to program into EXT_CSD register + * @timeout_ms: timeout (ms) for operation performed by register write, + * timeout of zero implies maximum possible timeout + * + * Modifies the EXT_CSD register for selected card. + */ +int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, + unsigned int timeout_ms) { int err; - struct mmc_command cmd; + struct mmc_command cmd = {0}; u32 status; BUG_ON(!card); BUG_ON(!card->host); - memset(&cmd, 0, sizeof(struct mmc_command)); - cmd.opcode = MMC_SWITCH; cmd.arg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) | (index << 16) | (value << 8) | set; cmd.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC; + cmd.cmd_timeout_ms = timeout_ms; err = mmc_wait_for_cmd(card->host, &cmd, MMC_CMD_RETRIES); if (err) @@ -433,17 +422,16 @@ int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value) return 0; } +EXPORT_SYMBOL_GPL(mmc_switch); int mmc_send_status(struct mmc_card *card, u32 *status) { int err; - struct mmc_command cmd; + struct mmc_command cmd = {0}; BUG_ON(!card); BUG_ON(!card->host); - memset(&cmd, 0, sizeof(struct mmc_command)); - cmd.opcode = MMC_SEND_STATUS; if (!mmc_host_is_spi(card->host)) cmd.arg = card->rca << 16; @@ -466,9 +454,9 @@ static int mmc_send_bus_test(struct mmc_card *card, struct mmc_host *host, u8 opcode, u8 len) { - struct mmc_request mrq; - struct mmc_command cmd; - struct mmc_data data; + struct mmc_request mrq = {0}; + struct mmc_command cmd = {0}; + struct mmc_data data = {0}; struct scatterlist sg; u8 *data_buf; u8 *test_buf; @@ -497,10 +485,6 @@ mmc_send_bus_test(struct mmc_card *card, struct mmc_host *host, u8 opcode, if (opcode == MMC_BUS_TEST_W) memcpy(data_buf, test_buf, len); - memset(&mrq, 0, sizeof(struct mmc_request)); - memset(&cmd, 0, sizeof(struct mmc_command)); - memset(&data, 0, sizeof(struct mmc_data)); - mrq.cmd = &cmd; mrq.data = &data; cmd.opcode = opcode; |