On Tuesday 10 December 2013 06:28 PM, Marek Vasut wrote:
On Friday, December 06, 2013 at 03:24:46 PM, Sourav Poddar wrote:
Adapt qspi driver to use (get_buf/put_buf) pointers added
earlier.
These can be called just before the memcpy operations to get hold
of the memory mapped address and to turn on the controller clocks.
Signed-off-by: Sourav Poddar<sourav.poddar@xxxxxx>
---
v1->v2:
enable/disable memory mapped only when get_buf/put_buf is
called (basicaaly only when memory mapped read operation is
desired).
drivers/spi/spi-ti-qspi.c | 19 +++++++++++++++++++
1 files changed, 19 insertions(+), 0 deletions(-)
diff --git a/drivers/spi/spi-ti-qspi.c b/drivers/spi/spi-ti-qspi.c
index e4a8afc..b83583c 100644
--- a/drivers/spi/spi-ti-qspi.c
+++ b/drivers/spi/spi-ti-qspi.c
@@ -248,6 +248,23 @@ static void ti_qspi_configure_from_slave(struct
spi_device *spi) ti_qspi_write(qspi, memval, QSPI_SPI_SETUP0_REG);
}
+static inline int __iomem *ti_qspi_get_mem_buf(struct spi_master *master)
Should this not be a 'void __iomem *' instead of 'int __iomem *' in any case ?
Yes, it should be. Will fix in v3.
+{
+ struct ti_qspi *qspi = spi_master_get_devdata(master);
+
+ pm_runtime_get_sync(qspi->dev);
+ enable_qspi_memory_mapped(qspi);
+ return qspi->mmap_base;
+}
+
+static void ti_qspi_put_mem_buf(struct spi_master *master)
+{
+ struct ti_qspi *qspi = spi_master_get_devdata(master);
+
+ disable_qspi_memory_mapped(qspi);
+ pm_runtime_put(qspi->dev);
+}
+
static void ti_qspi_restore_ctx(struct ti_qspi *qspi)
{
struct ti_qspi_regs *ctx_reg =&qspi->ctx_reg;
@@ -517,6 +534,8 @@ static int ti_qspi_probe(struct platform_device *pdev)
master->bits_per_word_mask = BIT(32 - 1) | BIT(16 - 1) | BIT(8 - 1);
master->mmap = true;
master->configure_from_slave = ti_qspi_configure_from_slave;
+ master->get_buf = ti_qspi_get_mem_buf;
+ master->put_buf = ti_qspi_put_mem_buf;
if (!of_property_read_u32(np, "num-cs",&num_cs))
master->num_chipselect = num_cs;
Best regards,
Marek Vasut
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