projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 18a1053f SY |
1 | /* |
| 2 | * Header for the SUDMAC driver | |
| 3 | * | |
| 4 | * Copyright (C) 2013 Renesas Solutions Corp. | |
| 5 | * | |
| 6 | * This is free software; you can redistribute it and/or modify | |
| 7 | * it under the terms of version 2 of the GNU General Public License as | |
| 8 | * published by the Free Software Foundation. | |
| 9 | */ | |
| 10 | #ifndef SUDMAC_H | |
| 11 | #define SUDMAC_H | |
| 12 | ||
| 13 | #include <linux/dmaengine.h> | |
| 14 | #include <linux/shdma-base.h> | |
| 15 | #include <linux/types.h> | |
| 16 | ||
| 17 | /* Used by slave DMA clients to request DMA to/from a specific peripheral */ | |
| 18 | struct sudmac_slave { | |
| 19 | struct shdma_slave shdma_slave; /* Set by the platform */ | |
| 20 | }; | |
| 21 | ||
| 22 | /* | |
| 23 | * Supplied by platforms to specify, how a DMA channel has to be configured for | |
| 24 | * a certain peripheral | |
| 25 | */ | |
| 26 | struct sudmac_slave_config { | |
| 27 | int slave_id; | |
| 28 | }; | |
| 29 | ||
| 30 | struct sudmac_channel { | |
| 31 | unsigned long offset; | |
| 32 | unsigned long config; | |
| 33 | unsigned long wait; /* The configuable range is 0 to 3 */ | |
| 34 | unsigned long dint_end_bit; | |
| 35 | }; | |
| 36 | ||
| 37 | struct sudmac_pdata { | |
| 38 | const struct sudmac_slave_config *slave; | |
| 39 | int slave_num; | |
| 40 | const struct sudmac_channel *channel; | |
| 41 | int channel_num; | |
| 42 | }; | |
| 43 | ||
| 44 | /* Definitions for the sudmac_channel.config */ | |
| 45 | #define SUDMAC_TX_BUFFER_MODE BIT(0) | |
| 46 | #define SUDMAC_RX_END_MODE BIT(1) | |
| 47 | ||
| 48 | /* Definitions for the sudmac_channel.dint_end_bit */ | |
| 49 | #define SUDMAC_DMA_BIT_CH0 BIT(0) | |
| 50 | #define SUDMAC_DMA_BIT_CH1 BIT(1) | |
| 51 | ||
| 52 | #endif |