diff options
Diffstat (limited to 'arch/arm/plat-nomadik/include/plat/ste_dma40.h')
| -rw-r--r-- | arch/arm/plat-nomadik/include/plat/ste_dma40.h | 223 |
1 files changed, 0 insertions, 223 deletions
diff --git a/arch/arm/plat-nomadik/include/plat/ste_dma40.h b/arch/arm/plat-nomadik/include/plat/ste_dma40.h deleted file mode 100644 index 9ff93b06568..00000000000 --- a/arch/arm/plat-nomadik/include/plat/ste_dma40.h +++ /dev/null @@ -1,223 +0,0 @@ -/* - * Copyright (C) ST-Ericsson SA 2007-2010 - * Author: Per Forlin <per.forlin@stericsson.com> for ST-Ericsson - * Author: Jonas Aaberg <jonas.aberg@stericsson.com> for ST-Ericsson - * License terms: GNU General Public License (GPL) version 2 - */ - - -#ifndef STE_DMA40_H -#define STE_DMA40_H - -#include <linux/dmaengine.h> -#include <linux/scatterlist.h> -#include <linux/workqueue.h> -#include <linux/interrupt.h> - -/* - * Maxium size for a single dma descriptor - * Size is limited to 16 bits. - * Size is in the units of addr-widths (1,2,4,8 bytes) - * Larger transfers will be split up to multiple linked desc - */ -#define STEDMA40_MAX_SEG_SIZE 0xFFFF - -/* dev types for memcpy */ -#define STEDMA40_DEV_DST_MEMORY (-1) -#define STEDMA40_DEV_SRC_MEMORY (-1) - -enum stedma40_mode { - STEDMA40_MODE_LOGICAL = 0, - STEDMA40_MODE_PHYSICAL, - STEDMA40_MODE_OPERATION, -}; - -enum stedma40_mode_opt { - STEDMA40_PCHAN_BASIC_MODE = 0, - STEDMA40_LCHAN_SRC_LOG_DST_LOG = 0, - STEDMA40_PCHAN_MODULO_MODE, - STEDMA40_PCHAN_DOUBLE_DST_MODE, - STEDMA40_LCHAN_SRC_PHY_DST_LOG, - STEDMA40_LCHAN_SRC_LOG_DST_PHY, -}; - -#define STEDMA40_ESIZE_8_BIT 0x0 -#define STEDMA40_ESIZE_16_BIT 0x1 -#define STEDMA40_ESIZE_32_BIT 0x2 -#define STEDMA40_ESIZE_64_BIT 0x3 - -/* The value 4 indicates that PEN-reg shall be set to 0 */ -#define STEDMA40_PSIZE_PHY_1 0x4 -#define STEDMA40_PSIZE_PHY_2 0x0 -#define STEDMA40_PSIZE_PHY_4 0x1 -#define STEDMA40_PSIZE_PHY_8 0x2 -#define STEDMA40_PSIZE_PHY_16 0x3 - -/* - * The number of elements differ in logical and - * physical mode - */ -#define STEDMA40_PSIZE_LOG_1 STEDMA40_PSIZE_PHY_2 -#define STEDMA40_PSIZE_LOG_4 STEDMA40_PSIZE_PHY_4 -#define STEDMA40_PSIZE_LOG_8 STEDMA40_PSIZE_PHY_8 -#define STEDMA40_PSIZE_LOG_16 STEDMA40_PSIZE_PHY_16 - -/* Maximum number of possible physical channels */ -#define STEDMA40_MAX_PHYS 32 - -enum stedma40_flow_ctrl { - STEDMA40_NO_FLOW_CTRL, - STEDMA40_FLOW_CTRL, -}; - -enum stedma40_periph_data_width { - STEDMA40_BYTE_WIDTH = STEDMA40_ESIZE_8_BIT, - STEDMA40_HALFWORD_WIDTH = STEDMA40_ESIZE_16_BIT, - STEDMA40_WORD_WIDTH = STEDMA40_ESIZE_32_BIT, - STEDMA40_DOUBLEWORD_WIDTH = STEDMA40_ESIZE_64_BIT -}; - -enum stedma40_xfer_dir { - STEDMA40_MEM_TO_MEM = 1, - STEDMA40_MEM_TO_PERIPH, - STEDMA40_PERIPH_TO_MEM, - STEDMA40_PERIPH_TO_PERIPH -}; - - -/** - * struct stedma40_chan_cfg - dst/src channel configuration - * - * @big_endian: true if the src/dst should be read as big endian - * @data_width: Data width of the src/dst hardware - * @p_size: Burst size - * @flow_ctrl: Flow control on/off. - */ -struct stedma40_half_channel_info { - bool big_endian; - enum stedma40_periph_data_width data_width; - int psize; - enum stedma40_flow_ctrl flow_ctrl; -}; - -/** - * struct stedma40_chan_cfg - Structure to be filled by client drivers. - * - * @dir: MEM 2 MEM, PERIPH 2 MEM , MEM 2 PERIPH, PERIPH 2 PERIPH - * @high_priority: true if high-priority - * @realtime: true if realtime mode is to be enabled. Only available on DMA40 - * version 3+, i.e DB8500v2+ - * @mode: channel mode: physical, logical, or operation - * @mode_opt: options for the chosen channel mode - * @src_dev_type: Src device type - * @dst_dev_type: Dst device type - * @src_info: Parameters for dst half channel - * @dst_info: Parameters for dst half channel - * @use_fixed_channel: if true, use physical channel specified by phy_channel - * @phy_channel: physical channel to use, only if use_fixed_channel is true - * - * This structure has to be filled by the client drivers. - * It is recommended to do all dma configurations for clients in the machine. - * - */ -struct stedma40_chan_cfg { - enum stedma40_xfer_dir dir; - bool high_priority; - bool realtime; - enum stedma40_mode mode; - enum stedma40_mode_opt mode_opt; - int src_dev_type; - int dst_dev_type; - struct stedma40_half_channel_info src_info; - struct stedma40_half_channel_info dst_info; - - bool use_fixed_channel; - int phy_channel; -}; - -/** - * struct stedma40_platform_data - Configuration struct for the dma device. - * - * @dev_len: length of dev_tx and dev_rx - * @dev_tx: mapping between destination event line and io address - * @dev_rx: mapping between source event line and io address - * @memcpy: list of memcpy event lines - * @memcpy_len: length of memcpy - * @memcpy_conf_phy: default configuration of physical channel memcpy - * @memcpy_conf_log: default configuration of logical channel memcpy - * @disabled_channels: A vector, ending with -1, that marks physical channels - * that are for different reasons not available for the driver. - */ -struct stedma40_platform_data { - u32 dev_len; - const dma_addr_t *dev_tx; - const dma_addr_t *dev_rx; - int *memcpy; - u32 memcpy_len; - struct stedma40_chan_cfg *memcpy_conf_phy; - struct stedma40_chan_cfg *memcpy_conf_log; - int disabled_channels[STEDMA40_MAX_PHYS]; - bool use_esram_lcla; -}; - -#ifdef CONFIG_STE_DMA40 - -/** - * stedma40_filter() - Provides stedma40_chan_cfg to the - * ste_dma40 dma driver via the dmaengine framework. - * does some checking of what's provided. - * - * Never directly called by client. It used by dmaengine. - * @chan: dmaengine handle. - * @data: Must be of type: struct stedma40_chan_cfg and is - * the configuration of the framework. - * - * - */ - -bool stedma40_filter(struct dma_chan *chan, void *data); - -/** - * stedma40_slave_mem() - Transfers a raw data buffer to or from a slave - * (=device) - * - * @chan: dmaengine handle - * @addr: source or destination physicall address. - * @size: bytes to transfer - * @direction: direction of transfer - * @flags: is actually enum dma_ctrl_flags. See dmaengine.h - */ - -static inline struct -dma_async_tx_descriptor *stedma40_slave_mem(struct dma_chan *chan, - dma_addr_t addr, - unsigned int size, - enum dma_transfer_direction direction, - unsigned long flags) -{ - struct scatterlist sg; - sg_init_table(&sg, 1); - sg.dma_address = addr; - sg.length = size; - - return dmaengine_prep_slave_sg(chan, &sg, 1, direction, flags); -} - -#else -static inline bool stedma40_filter(struct dma_chan *chan, void *data) -{ - return false; -} - -static inline struct -dma_async_tx_descriptor *stedma40_slave_mem(struct dma_chan *chan, - dma_addr_t addr, - unsigned int size, - enum dma_transfer_direction direction, - unsigned long flags) -{ - return NULL; -} -#endif - -#endif |