提交 2a9b27b3 编写于 作者: M Mark Brown

Merge remote-tracking branches 'spi/fix/ep93xx', 'spi/fix/rockchip',...

Merge remote-tracking branches 'spi/fix/ep93xx', 'spi/fix/rockchip', 'spi/fix/sunxi' and 'spi/fix/ti-qspi' into spi-linus
......@@ -578,7 +578,7 @@ static int rockchip_spi_transfer_one(
struct spi_device *spi,
struct spi_transfer *xfer)
{
int ret = 1;
int ret = 0;
struct rockchip_spi *rs = spi_master_get_devdata(master);
WARN_ON(readl_relaxed(rs->regs + ROCKCHIP_SPI_SSIENR) &&
......@@ -627,6 +627,8 @@ static int rockchip_spi_transfer_one(
spi_enable_chip(rs, 1);
ret = rockchip_spi_prepare_dma(rs);
}
/* successful DMA prepare means the transfer is in progress */
ret = ret ? ret : 1;
} else {
spi_enable_chip(rs, 1);
ret = rockchip_spi_pio_transfer(rs);
......
......@@ -173,13 +173,17 @@ static int sun4i_spi_transfer_one(struct spi_master *master,
{
struct sun4i_spi *sspi = spi_master_get_devdata(master);
unsigned int mclk_rate, div, timeout;
unsigned int start, end, tx_time;
unsigned int tx_len = 0;
int ret = 0;
u32 reg;
/* We don't support transfer larger than the FIFO */
if (tfr->len > SUN4I_FIFO_DEPTH)
return -EINVAL;
return -EMSGSIZE;
if (tfr->tx_buf && tfr->len >= SUN4I_FIFO_DEPTH)
return -EMSGSIZE;
reinit_completion(&sspi->done);
sspi->tx_buf = tfr->tx_buf;
......@@ -269,8 +273,12 @@ static int sun4i_spi_transfer_one(struct spi_master *master,
sun4i_spi_write(sspi, SUN4I_BURST_CNT_REG, SUN4I_BURST_CNT(tfr->len));
sun4i_spi_write(sspi, SUN4I_XMIT_CNT_REG, SUN4I_XMIT_CNT(tx_len));
/* Fill the TX FIFO */
sun4i_spi_fill_fifo(sspi, SUN4I_FIFO_DEPTH);
/*
* Fill the TX FIFO
* Filling the FIFO fully causes timeout for some reason
* at least on spi2 on A10s
*/
sun4i_spi_fill_fifo(sspi, SUN4I_FIFO_DEPTH - 1);
/* Enable the interrupts */
sun4i_spi_write(sspi, SUN4I_INT_CTL_REG, SUN4I_INT_CTL_TC);
......@@ -279,9 +287,16 @@ static int sun4i_spi_transfer_one(struct spi_master *master,
reg = sun4i_spi_read(sspi, SUN4I_CTL_REG);
sun4i_spi_write(sspi, SUN4I_CTL_REG, reg | SUN4I_CTL_XCH);
tx_time = max(tfr->len * 8 * 2 / (tfr->speed_hz / 1000), 100U);
start = jiffies;
timeout = wait_for_completion_timeout(&sspi->done,
msecs_to_jiffies(1000));
msecs_to_jiffies(tx_time));
end = jiffies;
if (!timeout) {
dev_warn(&master->dev,
"%s: timeout transferring %u bytes@%iHz for %i(%i)ms",
dev_name(&spi->dev), tfr->len, tfr->speed_hz,
jiffies_to_msecs(end - start), tx_time);
ret = -ETIMEDOUT;
goto out;
}
......
......@@ -160,6 +160,7 @@ static int sun6i_spi_transfer_one(struct spi_master *master,
{
struct sun6i_spi *sspi = spi_master_get_devdata(master);
unsigned int mclk_rate, div, timeout;
unsigned int start, end, tx_time;
unsigned int tx_len = 0;
int ret = 0;
u32 reg;
......@@ -269,9 +270,16 @@ static int sun6i_spi_transfer_one(struct spi_master *master,
reg = sun6i_spi_read(sspi, SUN6I_TFR_CTL_REG);
sun6i_spi_write(sspi, SUN6I_TFR_CTL_REG, reg | SUN6I_TFR_CTL_XCH);
tx_time = max(tfr->len * 8 * 2 / (tfr->speed_hz / 1000), 100U);
start = jiffies;
timeout = wait_for_completion_timeout(&sspi->done,
msecs_to_jiffies(1000));
msecs_to_jiffies(tx_time));
end = jiffies;
if (!timeout) {
dev_warn(&master->dev,
"%s: timeout transferring %u bytes@%iHz for %i(%i)ms",
dev_name(&spi->dev), tfr->len, tfr->speed_hz,
jiffies_to_msecs(end - start), tx_time);
ret = -ETIMEDOUT;
goto out;
}
......
......@@ -646,6 +646,13 @@ static int ti_qspi_probe(struct platform_device *pdev)
static int ti_qspi_remove(struct platform_device *pdev)
{
struct ti_qspi *qspi = platform_get_drvdata(pdev);
int rc;
rc = spi_master_suspend(qspi->master);
if (rc)
return rc;
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
......
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