diff options
| author | Michael Hennerich <michael.hennerich@analog.com> | 2017-11-28 13:53:14 +0100 |
|---|---|---|
| committer | Stefan Schmidt <stefan@osg.samsung.com> | 2017-11-29 16:49:41 +0100 |
| commit | c78c1b01394406182fab5caff25ac58f754c702d (patch) | |
| tree | 85b34f5397a70dec3a9a09a13f26680df6286b8a /drivers | |
| parent | 78f012bc0e059725a7a209d073726fe81cf30145 (diff) | |
| download | linux-c78c1b01394406182fab5caff25ac58f754c702d.tar.bz2 | |
net: ieee802154: adf7242: Avoid redundant RC_READY polling
READ/WRITE register and packet buffer can be done anytime as long
as SPI_READY. Only CMD transactions require RC_READY && SPI_READY.
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Stefan Schmidt <stefan@osg.samsung.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ieee802154/adf7242.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/drivers/net/ieee802154/adf7242.c b/drivers/net/ieee802154/adf7242.c index ce1a6d256849..548bec16906e 100644 --- a/drivers/net/ieee802154/adf7242.c +++ b/drivers/net/ieee802154/adf7242.c @@ -344,12 +344,18 @@ static int adf7242_wait_status(struct adf7242_local *lp, unsigned int status, return ret; } -static int adf7242_wait_ready(struct adf7242_local *lp, int line) +static int adf7242_wait_rc_ready(struct adf7242_local *lp, int line) { return adf7242_wait_status(lp, STAT_RC_READY | STAT_SPI_READY, STAT_RC_READY | STAT_SPI_READY, line); } +static int adf7242_wait_spi_ready(struct adf7242_local *lp, int line) +{ + return adf7242_wait_status(lp, STAT_SPI_READY, + STAT_SPI_READY, line); +} + static int adf7242_write_fbuf(struct adf7242_local *lp, u8 *data, u8 len) { u8 *buf = lp->buf; @@ -369,7 +375,7 @@ static int adf7242_write_fbuf(struct adf7242_local *lp, u8 *data, u8 len) spi_message_add_tail(&xfer_head, &msg); spi_message_add_tail(&xfer_buf, &msg); - adf7242_wait_ready(lp, __LINE__); + adf7242_wait_spi_ready(lp, __LINE__); mutex_lock(&lp->bmux); buf[0] = CMD_SPI_PKT_WR; @@ -401,7 +407,7 @@ static int adf7242_read_fbuf(struct adf7242_local *lp, spi_message_add_tail(&xfer_head, &msg); spi_message_add_tail(&xfer_buf, &msg); - adf7242_wait_ready(lp, __LINE__); + adf7242_wait_spi_ready(lp, __LINE__); mutex_lock(&lp->bmux); if (packet_read) { @@ -432,7 +438,7 @@ static int adf7242_read_reg(struct adf7242_local *lp, u16 addr, u8 *data) .rx_buf = lp->buf_read_rx, }; - adf7242_wait_ready(lp, __LINE__); + adf7242_wait_spi_ready(lp, __LINE__); mutex_lock(&lp->bmux); lp->buf_read_tx[0] = CMD_SPI_MEM_RD(addr); @@ -462,7 +468,7 @@ static int adf7242_write_reg(struct adf7242_local *lp, u16 addr, u8 data) { int status; - adf7242_wait_ready(lp, __LINE__); + adf7242_wait_spi_ready(lp, __LINE__); mutex_lock(&lp->bmux); lp->buf_reg_tx[0] = CMD_SPI_MEM_WR(addr); @@ -484,7 +490,7 @@ static int adf7242_cmd(struct adf7242_local *lp, unsigned int cmd) dev_vdbg(&lp->spi->dev, "%s : CMD=0x%X\n", __func__, cmd); if (cmd != CMD_RC_PC_RESET_NO_WAIT) - adf7242_wait_ready(lp, __LINE__); + adf7242_wait_rc_ready(lp, __LINE__); mutex_lock(&lp->bmux); lp->buf_cmd = cmd; |