Re: [PATCH] dmaengine: at_hdmac: remove platform data header

From: Vinod Koul
Date: Wed Jan 06 2021 - 01:25:57 EST


On 28-12-20, 21:30, Alexandre Belloni wrote:
> linux/platform_data/dma-atmel.h is only used by the at_hdmac driver. Move
> the CFG bits definitions back in at_hdmac_regs.h and the remaining
> definitions in the driver.

Applied, thanks...

> /* Bitfields in CFG */
> -/* are in at_hdmac.h */
> +#define ATC_PER_MSB(h) ((0x30U & (h)) >> 4) /* Extract most significant bits of a handshaking identifier */
> +
> +#define ATC_SRC_PER(h) (0xFU & (h)) /* Channel src rq associated with periph handshaking ifc h */
> +#define ATC_DST_PER(h) ((0xFU & (h)) << 4) /* Channel dst rq associated with periph handshaking ifc h */
> +#define ATC_SRC_REP (0x1 << 8) /* Source Replay Mod */
> +#define ATC_SRC_H2SEL (0x1 << 9) /* Source Handshaking Mod */
> +#define ATC_SRC_H2SEL_SW (0x0 << 9)
> +#define ATC_SRC_H2SEL_HW (0x1 << 9)
> +#define ATC_SRC_PER_MSB(h) (ATC_PER_MSB(h) << 10) /* Channel src rq (most significant bits) */
> +#define ATC_DST_REP (0x1 << 12) /* Destination Replay Mod */
> +#define ATC_DST_H2SEL (0x1 << 13) /* Destination Handshaking Mod */
> +#define ATC_DST_H2SEL_SW (0x0 << 13)
> +#define ATC_DST_H2SEL_HW (0x1 << 13)
> +#define ATC_DST_PER_MSB(h) (ATC_PER_MSB(h) << 14) /* Channel dst rq (most significant bits) */
> +#define ATC_SOD (0x1 << 16) /* Stop On Done */
> +#define ATC_LOCK_IF (0x1 << 20) /* Interface Lock */
> +#define ATC_LOCK_B (0x1 << 21) /* AHB Bus Lock */
> +#define ATC_LOCK_IF_L (0x1 << 22) /* Master Interface Arbiter Lock */
> +#define ATC_LOCK_IF_L_CHUNK (0x0 << 22)
> +#define ATC_LOCK_IF_L_BUFFER (0x1 << 22)
> +#define ATC_AHB_PROT_MASK (0x7 << 24) /* AHB Protection */
> +#define ATC_FIFOCFG_MASK (0x3 << 28) /* FIFO Request Configuration */
> +#define ATC_FIFOCFG_LARGESTBURST (0x0 << 28)
> +#define ATC_FIFOCFG_HALFFIFO (0x1 << 28)
> +#define ATC_FIFOCFG_ENOUGHSPACE (0x2 << 28)

Make these use BIT() or GENMASK() later..?

--
~Vinod