From 6f86ed820178ba35f87712548e6cd43b91608a6c Mon Sep 17 00:00:00 2001 From: Dragan Cvetic Date: Sat, 27 Jul 2019 09:33:52 +0100 Subject: misc: xilinx_sdfec: Add ability to configure turbo Add the capability to configure and retrieve turbo mode via the ioctls XSDFEC_SET_TURBO and XSDFEC_GET_TURBO. Add char device interface per DT node present and support file operations: - open(), - close(), - unlocked_ioctl(), - compat_ioctl(). Tested-by: Dragan Cvetic Signed-off-by: Derek Kiernan Signed-off-by: Dragan Cvetic Link: https://lore.kernel.org/r/1564216438-322406-3-git-send-email-dragan.cvetic@xilinx.com Signed-off-by: Greg Kroah-Hartman --- include/uapi/misc/xilinx_sdfec.h | 67 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) (limited to 'include') diff --git a/include/uapi/misc/xilinx_sdfec.h b/include/uapi/misc/xilinx_sdfec.h index 330ea25ddfa1..34f32c37261d 100644 --- a/include/uapi/misc/xilinx_sdfec.h +++ b/include/uapi/misc/xilinx_sdfec.h @@ -40,6 +40,22 @@ enum xsdfec_order { XSDFEC_OUT_OF_ORDER, }; +/** + * enum xsdfec_turbo_alg - Turbo Algorithm Type. + * @XSDFEC_MAX_SCALE: Max Log-Map algorithm with extrinsic scaling. When + * scaling is set to this is equivalent to the Max Log-Map + * algorithm. + * @XSDFEC_MAX_STAR: Log-Map algorithm. + * @XSDFEC_TURBO_ALG_MAX: Used to indicate out of bound Turbo algorithms. + * + * This enum specifies which Turbo Decode algorithm is in use. + */ +enum xsdfec_turbo_alg { + XSDFEC_MAX_SCALE = 0, + XSDFEC_MAX_STAR, + XSDFEC_TURBO_ALG_MAX, +}; + /** * enum xsdfec_state - State. * @XSDFEC_INIT: Driver is initialized. @@ -97,6 +113,29 @@ enum xsdfec_axis_word_include { XSDFEC_AXIS_WORDS_INCLUDE_MAX, }; +/** + * struct xsdfec_turbo - User data for Turbo codes. + * @alg: Specifies which Turbo decode algorithm to use + * @scale: Specifies the extrinsic scaling to apply when the Max Scale algorithm + * has been selected + * + * Turbo code structure to communicate parameters to XSDFEC driver. + */ +struct xsdfec_turbo { + __u32 alg; + __u8 scale; +}; + +/** + * struct xsdfec_status - Status of SD-FEC core. + * @state: State of the SD-FEC core + * @activity: Describes if the SD-FEC instance is Active + */ +struct xsdfec_status { + __u32 state; + __s8 activity; +}; + /** * struct xsdfec_irq - Enabling or Disabling Interrupts. * @enable_isr: If true enables the ISR @@ -135,4 +174,32 @@ struct xsdfec_config { * XSDFEC IOCTL List */ #define XSDFEC_MAGIC 'f' +/** + * DOC: XSDFEC_SET_TURBO + * @Parameters + * + * @struct xsdfec_turbo * + * Pointer to the &struct xsdfec_turbo that contains the Turbo decode + * settings for the SD-FEC core + * + * @Description + * + * ioctl that sets the SD-FEC Turbo parameter values + * + * This can only be used when the driver is in the XSDFEC_STOPPED state + */ +#define XSDFEC_SET_TURBO _IOW(XSDFEC_MAGIC, 4, struct xsdfec_turbo) +/** + * DOC: XSDFEC_GET_TURBO + * @Parameters + * + * @struct xsdfec_turbo * + * Pointer to the &struct xsdfec_turbo that contains the current Turbo + * decode settings of the SD-FEC Block + * + * @Description + * + * ioctl that returns SD-FEC turbo param values + */ +#define XSDFEC_GET_TURBO _IOR(XSDFEC_MAGIC, 7, struct xsdfec_turbo) #endif /* __XILINX_SDFEC_H__ */ -- cgit v1.2.3