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path: root/drivers/input/touchscreen/cyttsp4_spi.c
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Diffstat (limited to 'drivers/input/touchscreen/cyttsp4_spi.c')
-rw-r--r--drivers/input/touchscreen/cyttsp4_spi.c20
1 files changed, 9 insertions, 11 deletions
diff --git a/drivers/input/touchscreen/cyttsp4_spi.c b/drivers/input/touchscreen/cyttsp4_spi.c
index f8f891bead3..a71e1141d63 100644
--- a/drivers/input/touchscreen/cyttsp4_spi.c
+++ b/drivers/input/touchscreen/cyttsp4_spi.c
@@ -44,7 +44,7 @@
#define CY_SPI_DATA_BUF_SIZE (CY_SPI_CMD_BYTES + CY_SPI_DATA_SIZE)
static int cyttsp_spi_xfer(struct device *dev, u8 *xfer_buf,
- u8 op, u8 reg, u8 *buf, int length)
+ u8 op, u16 reg, u8 *buf, int length)
{
struct spi_device *spi = to_spi_device(dev);
struct spi_message msg;
@@ -63,14 +63,12 @@ static int cyttsp_spi_xfer(struct device *dev, u8 *xfer_buf,
memset(wr_buf, 0, CY_SPI_DATA_BUF_SIZE);
memset(rd_buf, 0, CY_SPI_CMD_BYTES);
- if (reg > 255)
- wr_buf[0] = op + CY_SPI_A8_BIT;
- else
- wr_buf[0] = op;
- if (op == CY_SPI_WR_OP)
- wr_buf[1] = reg % 256;
- if (op == CY_SPI_WR_OP && length > 0)
- memcpy(wr_buf + CY_SPI_CMD_BYTES, buf, length);
+ wr_buf[0] = op + (((reg >> 8) & 0x1) ? CY_SPI_A8_BIT : 0);
+ if (op == CY_SPI_WR_OP) {
+ wr_buf[1] = reg & 0xFF;
+ if (length > 0)
+ memcpy(wr_buf + CY_SPI_CMD_BYTES, buf, length);
+ }
memset(xfer, 0, sizeof(xfer));
spi_message_init(&msg);
@@ -130,7 +128,7 @@ static int cyttsp_spi_xfer(struct device *dev, u8 *xfer_buf,
}
static int cyttsp_spi_read_block_data(struct device *dev, u8 *xfer_buf,
- u8 addr, u8 length, void *data)
+ u16 addr, u8 length, void *data)
{
int rc;
@@ -143,7 +141,7 @@ static int cyttsp_spi_read_block_data(struct device *dev, u8 *xfer_buf,
}
static int cyttsp_spi_write_block_data(struct device *dev, u8 *xfer_buf,
- u8 addr, u8 length, const void *data)
+ u16 addr, u8 length, const void *data)
{
return cyttsp_spi_xfer(dev, xfer_buf, CY_SPI_WR_OP, addr, (void *)data,
length);