From 18a1053f7b85acdda2428c9f694101070cb8e62a Mon Sep 17 00:00:00 2001 From: "Shimoda, Yoshihiro" Date: Tue, 23 Apr 2013 20:00:12 +0900 Subject: sudmac: add support for SUDMAC Some Renesas USB modules have SUDMAC. This patch supports it using the shdma-base driver. Signed-off-by: Yoshihiro Shimoda Reviewed-by: Guennadi Liakhovetski Acked-by: Kuninori Morimoto Signed-off-by: Vinod Koul --- include/linux/sudmac.h | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 include/linux/sudmac.h (limited to 'include/linux/sudmac.h') diff --git a/include/linux/sudmac.h b/include/linux/sudmac.h new file mode 100644 index 000000000000..377b8a5788fa --- /dev/null +++ b/include/linux/sudmac.h @@ -0,0 +1,52 @@ +/* + * Header for the SUDMAC driver + * + * Copyright (C) 2013 Renesas Solutions Corp. + * + * This is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + */ +#ifndef SUDMAC_H +#define SUDMAC_H + +#include +#include +#include + +/* Used by slave DMA clients to request DMA to/from a specific peripheral */ +struct sudmac_slave { + struct shdma_slave shdma_slave; /* Set by the platform */ +}; + +/* + * Supplied by platforms to specify, how a DMA channel has to be configured for + * a certain peripheral + */ +struct sudmac_slave_config { + int slave_id; +}; + +struct sudmac_channel { + unsigned long offset; + unsigned long config; + unsigned long wait; /* The configuable range is 0 to 3 */ + unsigned long dint_end_bit; +}; + +struct sudmac_pdata { + const struct sudmac_slave_config *slave; + int slave_num; + const struct sudmac_channel *channel; + int channel_num; +}; + +/* Definitions for the sudmac_channel.config */ +#define SUDMAC_TX_BUFFER_MODE BIT(0) +#define SUDMAC_RX_END_MODE BIT(1) + +/* Definitions for the sudmac_channel.dint_end_bit */ +#define SUDMAC_DMA_BIT_CH0 BIT(0) +#define SUDMAC_DMA_BIT_CH1 BIT(1) + +#endif -- cgit v1.2.3