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spi: dw: Add an initialization priority Kconfig option

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On Quark SE, SPI might require GPIO to be ready before hand, to emulate
CS, thus providing an option to tweak the intialization priority for SPI
DW driver.

Change-Id: Ifa373948ac8227bf6e4ed1113bcb4dc9139b6663
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This commit is contained in:
Tomasz Bursztyka 2016-01-22 14:47:11 +01:00 • committed by Anas Nashif
commit 6021c64844
3 changed files with 11 additions and 2 deletions
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3
arch/x86/soc/quark_se/Kconfig
View file

@ -234,6 +234,9 @@ config GPIO_DW_INIT_PRIORITY
config I2C_INIT_PRIORITY config I2C_INIT_PRIORITY
default 60 default 60
config SPI_DW_INIT_PRIORITY
default 70 # It might require GPIO to be ready first
if UART_NS16550 if UART_NS16550
config UART_NS16550_PORT_0 config UART_NS16550_PORT_0

6
drivers/spi/Kconfig
View file

@ -237,6 +237,12 @@ config SPI_DW_CS_GPIO
depends on SPI_DW && GPIO depends on SPI_DW && GPIO
default n default n
config SPI_DW_INIT_PRIORITY
int "Init priority"
default 60
help
Device driver initialization priority.
choice choice
depends on SPI_DW depends on SPI_DW
prompt "DesignWare SPI interrupt trigger condition" prompt "DesignWare SPI interrupt trigger condition"

4
drivers/spi/spi_dw.c
View file

@ -579,7 +579,7 @@ DECLARE_DEVICE_INIT_CONFIG(spi_dw_port_0, CONFIG_SPI_DW_PORT_0_DRV_NAME,
spi_dw_init, &spi_dw_config_0); spi_dw_init, &spi_dw_config_0);
SYS_DEFINE_DEVICE(spi_dw_port_0, &spi_dw_data_port_0, SECONDARY, SYS_DEFINE_DEVICE(spi_dw_port_0, &spi_dw_data_port_0, SECONDARY,
CONFIG_KERNEL_INIT_PRIORITY_DEFAULT); CONFIG_SPI_DW_INIT_PRIORITY);
void spi_config_0_irq(void) void spi_config_0_irq(void)
{ {
@ -612,7 +612,7 @@ DECLARE_DEVICE_INIT_CONFIG(spi_dw_port_1, CONFIG_SPI_DW_PORT_1_DRV_NAME,
spi_dw_init, &spi_dw_config_1); spi_dw_init, &spi_dw_config_1);
SYS_DEFINE_DEVICE(spi_dw_port_1, &spi_dw_data_port_1, SECONDARY, SYS_DEFINE_DEVICE(spi_dw_port_1, &spi_dw_data_port_1, SECONDARY,
CONFIG_KERNEL_INIT_PRIORITY_DEFAULT); CONFIG_SPI_DW_INIT_PRIORITY);
void spi_config_1_irq(void) void spi_config_1_irq(void)
{ {