| Message ID | 1385451313-1875-7-git-send-email-sourav.poddar@ti.com |
|---|---|
| State | Not Applicable |
| Headers | show |
On Tue, Nov 26, 2013 at 01:05:02PM +0530, Sourav Poddar wrote: > +void enable_qspi_memory_mapped(struct ti_qspi *qspi) > +void disable_qspi_memory_mapped(struct ti_qspi *qspi) These are driver internal functions so they should be static. It'd also be more normal to put the qspi_ at the start of the name though it's not too big a deal.
On Tuesday 26 November 2013 06:27 PM, Mark Brown wrote: > On Tue, Nov 26, 2013 at 01:05:02PM +0530, Sourav Poddar wrote: > >> +void enable_qspi_memory_mapped(struct ti_qspi *qspi) >> +void disable_qspi_memory_mapped(struct ti_qspi *qspi) > These are driver internal functions so they should be static. It'd also > be more normal to put the qspi_ at the start of the name though it's not > too big a deal. Ok. will change.
diff --git a/drivers/spi/spi-ti-qspi.c b/drivers/spi/spi-ti-qspi.c index 39aefd7..40f1c35 100644 --- a/drivers/spi/spi-ti-qspi.c +++ b/drivers/spi/spi-ti-qspi.c @@ -113,6 +113,10 @@ struct ti_qspi { #define QSPI_CSPOL(n) (1 << (1 + n * 8)) #define QSPI_CKPOL(n) (1 << (n * 8)) +#define MM_SWITCH (1 << 0) +#define MEM_CS (1 << 8) +#define MEM_CS_DIS (0 << 8) + #define QSPI_FRAME 4096 #define QSPI_AUTOSUSPEND_TIMEOUT 2000 @@ -129,6 +133,30 @@ static inline void ti_qspi_write(struct ti_qspi *qspi, writel(val, qspi->base + reg); } +void enable_qspi_memory_mapped(struct ti_qspi *qspi) +{ + u32 val; + + ti_qspi_write(qspi, MM_SWITCH, QSPI_SPI_SWITCH_REG); + if (qspi->ctrl_mod) { + val = readl(qspi->ctrl_base); + val |= MEM_CS; + writel(val, qspi->ctrl_base); + } +} + +void disable_qspi_memory_mapped(struct ti_qspi *qspi) +{ + u32 val; + + ti_qspi_write(qspi, ~MM_SWITCH, QSPI_SPI_SWITCH_REG); + if (qspi->ctrl_mod) { + val = readl(qspi->ctrl_base); + val &= MEM_CS_DIS; + writel(val, qspi->ctrl_base); + } +} + static int ti_qspi_setup(struct spi_device *spi) { struct ti_qspi *qspi = spi_master_get_devdata(spi->master);
These add apis that can be used to switch to memory mapped operatons by configuring control module and qspi registers. Signed-off-by: Sourav Poddar <sourav.poddar@ti.com> --- drivers/spi/spi-ti-qspi.c | 28 ++++++++++++++++++++++++++++ 1 files changed, 28 insertions(+), 0 deletions(-)