diff options
Diffstat (limited to 'sound/soc/omap/abe/abe_mem.c')
| -rw-r--r-- | sound/soc/omap/abe/abe_mem.c | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/sound/soc/omap/abe/abe_mem.c b/sound/soc/omap/abe/abe_mem.c new file mode 100644 index 00000000000..cbd0afb8d82 --- /dev/null +++ b/sound/soc/omap/abe/abe_mem.c @@ -0,0 +1,100 @@ +/* + * ALSA SoC OMAP ABE driver + * + * Author: Laurent Le Faucheur <l-le-faucheur@ti.com> + * Liam Girdwood <lrg@slimlogic.co.uk> + * + * 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. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + */ +#include "abe_main.h" + +/** + * abe_block_copy + * @direction: direction of the data move (Read/Write) + * @memory_bamk:memory bank among PMEM, DMEM, CMEM, SMEM, ATC/IO + * @address: address of the memory copy (byte addressing) + * @data: pointer to the data to transfer + * @nb_bytes: number of data to move + * + * Memory transfer to/from ABE to MPU + */ +void abe_block_copy(u32 direction, u32 memory_bank, u32 address, + u32 *data, u32 nb_bytes) +{ + u32 i; + u32 base_address = 0, *src_ptr, *dst_ptr, n; + switch (memory_bank) { + case ABE_PMEM: + base_address = (u32) io_base + ABE_PMEM_BASE_OFFSET_MPU; + break; + case ABE_CMEM: + base_address = (u32) io_base + ABE_CMEM_BASE_OFFSET_MPU; + break; + case ABE_SMEM: + base_address = (u32) io_base + ABE_SMEM_BASE_OFFSET_MPU; + break; + case ABE_DMEM: + base_address = (u32) io_base + ABE_DMEM_BASE_OFFSET_MPU; + break; + case ABE_ATC: + base_address = (u32) io_base + ABE_ATC_BASE_OFFSET_MPU; + break; + default: + base_address = (u32) io_base + ABE_SMEM_BASE_OFFSET_MPU; + abe_dbg_param |= ERR_LIB; + abe_dbg_error_log(ABE_BLOCK_COPY_ERR); + break; + } + if (direction == COPY_FROM_HOST_TO_ABE) { + dst_ptr = (u32 *) (base_address + address); + src_ptr = (u32 *) data; + } else { + dst_ptr = (u32 *) data; + src_ptr = (u32 *) (base_address + address); + } + n = (nb_bytes / 4); + for (i = 0; i < n; i++) + *dst_ptr++ = *src_ptr++; +} +/** + * abe_reset_mem + * + * @memory_bank: memory bank among DMEM, SMEM + * @address: address of the memory copy (byte addressing) + * @nb_bytes: number of data to move + * + * Reset ABE memory + */ +void abe_reset_mem(u32 memory_bank, u32 address, u32 nb_bytes) +{ + u32 i; + u32 *dst_ptr, n; + u32 base_address = 0; + switch (memory_bank) { + case ABE_SMEM: + base_address = (u32) io_base + ABE_SMEM_BASE_OFFSET_MPU; + break; + case ABE_DMEM: + base_address = (u32) io_base + ABE_DMEM_BASE_OFFSET_MPU; + break; + case ABE_CMEM: + base_address = (u32) io_base + ABE_CMEM_BASE_OFFSET_MPU; + break; + } + dst_ptr = (u32 *) (base_address + address); + n = (nb_bytes / 4); + for (i = 0; i < n; i++) + *dst_ptr++ = 0; +} |