diff options
| author |   Chuah, Kim Tatt <kim.tatt.chuah@intel.com> | 2016-06-15 13:44:11 +0800 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-06-25 14:30:42 -0700 |
| commit | c6f82787a5a193a5c4c49ddaeb362d320efa5fba (patch) | |
| tree | 55da1b24d1b63bcb073e11ae49249887e297006e /include/linux/dma | |
| parent | tty: serial: 8250: add CON_CONSDEV to flags (diff) | |
| download | linux-dev-c6f82787a5a193a5c4c49ddaeb362d320efa5fba.tar.xz linux-dev-c6f82787a5a193a5c4c49ddaeb362d320efa5fba.zip | |
dmaengine: hsu: Export hsu_dma_get_status()
To allow other code to safely read DMA Channel Status Register (where
the register attribute for Channel Error, Descriptor Time Out &
Descriptor Done fields are read-clear), export hsu_dma_get_status().
hsu_dma_irq() is renamed to hsu_dma_do_irq() and requires Status
Register value to be passed in.
Signed-off-by: Chuah, Kim Tatt <kim.tatt.chuah@intel.com>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/dma')
| -rw-r--r-- | include/linux/dma/hsu.h | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/include/linux/dma/hsu.h b/include/linux/dma/hsu.h index 79df69dc629c..aaff68efba5d 100644 --- a/include/linux/dma/hsu.h +++ b/include/linux/dma/hsu.h @@ -39,14 +39,22 @@ struct hsu_dma_chip { #if IS_ENABLED(CONFIG_HSU_DMA) /* Export to the internal users */ -irqreturn_t hsu_dma_irq(struct hsu_dma_chip *chip, unsigned short nr); +int hsu_dma_get_status(struct hsu_dma_chip *chip, unsigned short nr, + u32 *status); +irqreturn_t hsu_dma_do_irq(struct hsu_dma_chip *chip, unsigned short nr, + u32 status); /* Export to the platform drivers */ int hsu_dma_probe(struct hsu_dma_chip *chip); int hsu_dma_remove(struct hsu_dma_chip *chip); #else -static inline irqreturn_t hsu_dma_irq(struct hsu_dma_chip *chip, - unsigned short nr) +static inline int hsu_dma_get_status(struct hsu_dma_chip *chip, + unsigned short nr, u32 *status) +{ + return 0; +} +static inline irqreturn_t hsu_dma_do_irq(struct hsu_dma_chip *chip, + unsigned short nr, u32 status) { return IRQ_NONE; } |