diff options
Diffstat (limited to 'include/linux/amba/pl08x.h')
| -rw-r--r-- | include/linux/amba/pl08x.h | 41 |
1 files changed, 32 insertions, 9 deletions
diff --git a/include/linux/amba/pl08x.h b/include/linux/amba/pl08x.h index 10fe2a211c2e..3100e0debcdd 100644 --- a/include/linux/amba/pl08x.h +++ b/include/linux/amba/pl08x.h @@ -1,13 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/amba/pl08x.h - ARM PrimeCell DMA Controller driver * * Copyright (C) 2005 ARM Ltd * Copyright (C) 2010 ST-Ericsson SA * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * * pl08x information required by platform code * * Please credit ARM.com @@ -47,8 +44,6 @@ enum { * devices with static assignments * @muxval: a number usually used to poke into some mux regiser to * mux in the signal to this channel - * @cctl_memcpy: options for the channel control register for memcpy - * *** not used for slave channels *** * @addr: source/target address in physical memory for this DMA channel, * can be the address of a FIFO register for burst requests for example. * This can be left undefined if the PrimeCell API is used for configuring @@ -63,12 +58,28 @@ struct pl08x_channel_data { int min_signal; int max_signal; u32 muxval; - u32 cctl_memcpy; dma_addr_t addr; bool single; u8 periph_buses; }; +enum pl08x_burst_size { + PL08X_BURST_SZ_1, + PL08X_BURST_SZ_4, + PL08X_BURST_SZ_8, + PL08X_BURST_SZ_16, + PL08X_BURST_SZ_32, + PL08X_BURST_SZ_64, + PL08X_BURST_SZ_128, + PL08X_BURST_SZ_256, +}; + +enum pl08x_bus_width { + PL08X_BUS_WIDTH_8_BITS, + PL08X_BUS_WIDTH_16_BITS, + PL08X_BUS_WIDTH_32_BITS, +}; + /** * struct pl08x_platform_data - the platform configuration for the PL08x * PrimeCells. @@ -76,6 +87,11 @@ struct pl08x_channel_data { * platform, all inclusive, including multiplexed channels. The available * physical channels will be multiplexed around these signals as they are * requested, just enumerate all possible channels. + * @num_slave_channels: number of elements in the slave channel array + * @memcpy_burst_size: the appropriate burst size for memcpy operations + * @memcpy_bus_width: memory bus width + * @memcpy_prot_buff: whether memcpy DMA is bufferable + * @memcpy_prot_cache: whether memcpy DMA is cacheable * @get_xfer_signal: request a physical signal to be used for a DMA transfer * immediately: if there is some multiplexing or similar blocking the use * of the channel the transfer can be denied by returning less than zero, @@ -84,15 +100,22 @@ struct pl08x_channel_data { * running any DMA transfer and multiplexing can be recycled * @lli_buses: buses which LLIs can be fetched from: PL08X_AHB1 | PL08X_AHB2 * @mem_buses: buses which memory can be accessed from: PL08X_AHB1 | PL08X_AHB2 + * @slave_map: DMA slave matching table + * @slave_map_len: number of elements in @slave_map */ struct pl08x_platform_data { - const struct pl08x_channel_data *slave_channels; + struct pl08x_channel_data *slave_channels; unsigned int num_slave_channels; - struct pl08x_channel_data memcpy_channel; + enum pl08x_burst_size memcpy_burst_size; + enum pl08x_bus_width memcpy_bus_width; + bool memcpy_prot_buff; + bool memcpy_prot_cache; int (*get_xfer_signal)(const struct pl08x_channel_data *); void (*put_xfer_signal)(const struct pl08x_channel_data *, int); u8 lli_buses; u8 mem_buses; + const struct dma_slave_map *slave_map; + int slave_map_len; }; #ifdef CONFIG_AMBA_PL08X |