michaelh/zephyr
1
0
Fork 0
Code Releases Activity

drivers: dmamux: Remove need for kmalloc

Browse source 
Use file static variable for the channel config data, instead
of a dynamic array allocated with kmalloc.

Signed-off-by: Erwin Rol <erwin@erwinrol.com>
This commit is contained in:
Erwin Rol 2020-09-04 23:32:02 +02:00 • committed by Anas Nashif
commit 4cc15d73dd
1 changed files with 22 additions and 26 deletions
Download patch file Download diff file Expand all files Collapse all files

48
drivers/dma/dmamux_stm32.c
View file

@ -172,13 +172,6 @@ static int dmamux_stm32_init(const struct device *dev)
return -EIO;
}
int size_stream =
sizeof(struct dmamux_stm32_channel) * config->channel_nb;
data->mux_channels = k_malloc(size_stream);
if (!data->mux_channels) {
LOG_ERR("HEAP_MEM_POOL_SIZE is too small");
return -ENOMEM;
}
for (int i = 0; i < config->channel_nb; i++) {
/*
* associates the dmamux channel
@ -209,26 +202,29 @@ static const struct dma_driver_api dma_funcs = {
.get_status = dmamux_stm32_get_status,
};
#define DMAMUX_INIT(index) \
\
const struct dmamux_stm32_config dmamux_stm32_config_##index = {\
.pclken = { .bus = DT_INST_CLOCKS_CELL(index, bus), \
.enr = DT_INST_CLOCKS_CELL(index, bits) }, \
.base = DT_INST_REG_ADDR(index), \
.channel_nb = DT_INST_PROP(index, dma_channels), \
.gen_nb = DT_INST_PROP(index, dma_generators), \
.req_nb = DT_INST_PROP(index, dma_requests), \
}; \
\
static struct dmamux_stm32_data dmamux_stm32_data_##index = { \
.mux_channels = NULL, \
}; \
\
DEVICE_DT_INST_DEFINE(index, \
&dmamux_stm32_init, \
device_pm_control_nop, \
#define DMAMUX_INIT(index) \
\
const struct dmamux_stm32_config dmamux_stm32_config_##index = { \
.pclken = { .bus = DT_INST_CLOCKS_CELL(index, bus), \
.enr = DT_INST_CLOCKS_CELL(index, bits) }, \
.base = DT_INST_REG_ADDR(index), \
.channel_nb = DT_INST_PROP(index, dma_channels), \
.gen_nb = DT_INST_PROP(index, dma_generators), \
.req_nb = DT_INST_PROP(index, dma_requests), \
}; \
\
static struct dmamux_stm32_channel \
dmamux_stm32_channels_##index[DT_INST_PROP(index, dma_channels)]; \
\
static struct dmamux_stm32_data dmamux_stm32_data_##index = { \
.mux_channels = dmamux_stm32_channels_##index, \
}; \
\
DEVICE_DT_INST_DEFINE(index, \
&dmamux_stm32_init, \
device_pm_control_nop, \
&dmamux_stm32_data_##index, &dmamux_stm32_config_##index,\
POST_KERNEL, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT,\
POST_KERNEL, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT, \
&dma_funcs);
DT_INST_FOREACH_STATUS_OKAY(DMAMUX_INIT)