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OpenCloudOS-Kernel
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Merge remote-tracking branches 'spi/topic/orion', 'spi/topic/pxa2xx', 'spi/topic/rspi' and 'spi/topic/s3c64xx' into spi-next

This commit is contained in:
Mark Brown 2016-12-12 15:54:17 +00:00
parent 830d705f26 7348291058 6906b0ec5c db30083813 b099b1319d
commit 6694430130
3 changed files with 50 additions and 8 deletions
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5
drivers/spi/Kconfig
View File

@ -463,7 +463,8 @@ config SPI_ORION
tristate "Orion SPI master"
depends on PLAT_ORION || ARCH_MVEBU || COMPILE_TEST
help
This enables using the SPI master controller on the Orion chips.
This enables using the SPI master controller on the Orion
and MVEBU chips.
config SPI_PIC32
tristate "Microchip PIC32 series SPI"
@ -565,7 +566,7 @@ config SPI_S3C24XX_FIQ
config SPI_S3C64XX
tristate "Samsung S3C64XX series type SPI"
depends on (PLAT_SAMSUNG || ARCH_EXYNOS)
depends on (PLAT_SAMSUNG || ARCH_EXYNOS || COMPILE_TEST)
help
SPI driver for Samsung S3C64XX and newer SoCs.

1
drivers/spi/spi-pxa2xx.h
View File

@ -109,7 +109,6 @@ static inline void pxa2xx_spi_write(const struct driver_data *drv_data,
#define DONE_STATE ((void *)2)
#define ERROR_STATE ((void *)-1)
#define IS_DMA_ALIGNED(x) IS_ALIGNED((unsigned long)(x), DMA_ALIGNMENT)
#define DMA_ALIGNMENT 8
static inline int pxa25x_ssp_comp(struct driver_data *drv_data)

52
drivers/spi/spi-rspi.c
View File

@ -413,7 +413,7 @@ static unsigned int qspi_set_send_trigger(struct rspi_data *rspi,
return n;
}
static void qspi_set_receive_trigger(struct rspi_data *rspi, unsigned int len)
static int qspi_set_receive_trigger(struct rspi_data *rspi, unsigned int len)
{
unsigned int n;
@ -428,6 +428,7 @@ static void qspi_set_receive_trigger(struct rspi_data *rspi, unsigned int len)
qspi_update(rspi, SPBFCR_RXTRG_MASK,
SPBFCR_RXTRG_1B, QSPI_SPBFCR);
}
return n;
}
#define set_config_register(spi, n) spi->ops->set_config_register(spi, n)
@ -785,6 +786,9 @@ static int qspi_transfer_out_in(struct rspi_data *rspi,
static int qspi_transfer_out(struct rspi_data *rspi, struct spi_transfer *xfer)
{
const u8 *tx = xfer->tx_buf;
unsigned int n = xfer->len;
unsigned int i, len;
int ret;
if (rspi->master->can_dma && __rspi_can_dma(rspi, xfer)) {
@ -793,9 +797,23 @@ static int qspi_transfer_out(struct rspi_data *rspi, struct spi_transfer *xfer)
return ret;
}
ret = rspi_pio_transfer(rspi, xfer->tx_buf, NULL, xfer->len);
if (ret < 0)
return ret;
while (n > 0) {
len = qspi_set_send_trigger(rspi, n);
if (len == QSPI_BUFFER_SIZE) {
ret = rspi_wait_for_tx_empty(rspi);
if (ret < 0) {
dev_err(&rspi->master->dev, "transmit timeout\n");
return ret;
}
for (i = 0; i < len; i++)
rspi_write_data(rspi, *tx++);
} else {
ret = rspi_pio_transfer(rspi, tx, NULL, n);
if (ret < 0)
return ret;
}
n -= len;
}
/* Wait for the last transmission */
rspi_wait_for_tx_empty(rspi);
@ -805,13 +823,37 @@ static int qspi_transfer_out(struct rspi_data *rspi, struct spi_transfer *xfer)
static int qspi_transfer_in(struct rspi_data *rspi, struct spi_transfer *xfer)
{
u8 *rx = xfer->rx_buf;
unsigned int n = xfer->len;
unsigned int i, len;
int ret;
if (rspi->master->can_dma && __rspi_can_dma(rspi, xfer)) {
int ret = rspi_dma_transfer(rspi, NULL, &xfer->rx_sg);
if (ret != -EAGAIN)
return ret;
}
return rspi_pio_transfer(rspi, NULL, xfer->rx_buf, xfer->len);
while (n > 0) {
len = qspi_set_receive_trigger(rspi, n);
if (len == QSPI_BUFFER_SIZE) {
ret = rspi_wait_for_rx_full(rspi);
if (ret < 0) {
dev_err(&rspi->master->dev, "receive timeout\n");
return ret;
}
for (i = 0; i < len; i++)
*rx++ = rspi_read_data(rspi);
} else {
ret = rspi_pio_transfer(rspi, NULL, rx, n);
if (ret < 0)
return ret;
*rx++ = ret;
}
n -= len;
}
return 0;
}
static int qspi_transfer_one(struct spi_master *master, struct spi_device *spi,