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rk2928: spi init

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This commit is contained in:
kfx 2012-07-11 17:24:11 +08:00
commit dfeede9fe7
2 changed files with 116 additions and 5 deletions
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116
arch/arm/mach-rk2928/devices.c
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@ -281,7 +281,7 @@ static struct platform_device device_i2c_gpio = {
};
#endif
static void __init rk30_init_i2c(void)
static void __init rk2928_init_i2c(void)
{
#ifdef CONFIG_I2C0_RK30
platform_device_register(&device_i2c0);
@ -300,10 +300,122 @@ static void __init rk30_init_i2c(void)
#endif
}
//end of i2c
#if defined(CONFIG_SPIM0_RK29) || defined(CONFIG_SPIM1_RK29)
/*****************************************************************************************
* spi devices
* author: cmc@rock-chips.com
*****************************************************************************************/
#define SPI_CHIPSELECT_NUM 2
static int spi_io_init(struct spi_cs_gpio *cs_gpios, int cs_num)
{
int i;
if (cs_gpios) {
for (i = 0; i < cs_num; i++) {
rk30_mux_api_set(cs_gpios[i].cs_iomux_name, cs_gpios[i].cs_iomux_mode);
}
}
return 0;
}
static int spi_io_deinit(struct spi_cs_gpio *cs_gpios, int cs_num)
{
return 0;
}
static int spi_io_fix_leakage_bug(void)
{
#if 0
gpio_direction_output(RK29_PIN2_PC1, GPIO_LOW);
#endif
return 0;
}
static int spi_io_resume_leakage_bug(void)
{
#if 0
gpio_direction_output(RK29_PIN2_PC1, GPIO_HIGH);
#endif
return 0;
}
#endif
/*
* rk29xx spi master device
*/
#ifdef CONFIG_SPIM0_RK29
static struct spi_cs_gpio rk29xx_spi0_cs_gpios[SPI_CHIPSELECT_NUM] = {
{
.name = "spi0 cs0",
.cs_gpio = RK2928_PIN1_PB3,
.cs_iomux_name = GPIO1B3_SPI_CSN0_UART1_RTSN_NAME,
.cs_iomux_mode = GPIO1B_SPI_CSN0,
},
{
.name = "spi0 cs1",
.cs_gpio = RK2928_PIN1_PB4,
.cs_iomux_name = GPIO1B4_SPI_CSN1_UART1_CTSN_NAME,//if no iomux,set it NULL
.cs_iomux_mode = GPIO1B_SPI_CSN1,
},
};
static struct rk29xx_spi_platform_data rk29xx_spi0_platdata = {
.num_chipselect = SPI_CHIPSELECT_NUM,
.chipselect_gpios = rk29xx_spi0_cs_gpios,
.io_init = spi_io_init,
.io_deinit = spi_io_deinit,
.io_fix_leakage_bug = spi_io_fix_leakage_bug,
.io_resume_leakage_bug = spi_io_resume_leakage_bug,
};
static struct resource rk29_spi0_resources[] = {
{
.start = IRQ_SPI,
.end = IRQ_SPI,
.flags = IORESOURCE_IRQ,
},
{
.start = RK2928_SPI_PHYS,
.end = RK2928_SPI_PHYS + RK2928_SPI_SIZE - 1,
.flags = IORESOURCE_MEM,
},
{
.start = DMACH_SPI0_TX,
.end = DMACH_SPI0_TX,
.flags = IORESOURCE_DMA,
},
{
.start = DMACH_SPI0_RX,
.end = DMACH_SPI0_RX,
.flags = IORESOURCE_DMA,
},
};
struct platform_device rk29xx_device_spi0m = {
.name = "rk29xx_spim",
.id = 0,
.num_resources = ARRAY_SIZE(rk29_spi0_resources),
.resource = rk29_spi0_resources,
.dev = {
.dma_mask = &dma_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
.platform_data = &rk29xx_spi0_platdata,
},
};
#endif
static void __init rk2928_init_spim(void)
{
#ifdef CONFIG_SPIM0_RK29
platform_device_register(&rk29xx_device_spi0m);
#endif
}
static int __init rk2928_init_devices(void)
{
rk2928_init_dma();
rk30_init_i2c();
rk2928_init_i2c();
rk2928_init_spim();
#if defined(CONFIG_FIQ_DEBUGGER) && defined(DEBUG_UART_PHYS)
rk_serial_debug_init(DEBUG_UART_BASE, IRQ_DEBUG_UART, IRQ_UART_SIGNAL, -1);
#endif

5
drivers/spi/Kconfig
View file

@ -426,7 +426,7 @@ config SPI_NUC900
config SPIM_RK29
tristate "RK SPI master controller core support"
depends on (ARCH_RK29 || ARCH_RK30) && SPI_MASTER
depends on (ARCH_RK29 || ARCH_RK30 || ARCH_RK2928) && SPI_MASTER
help
general driver for SPI controller core from RockChips
@ -438,13 +438,12 @@ config SPIM0_RK29
config SPIM1_RK29
bool "RK SPI1 master controller"
depends on SPIM_RK29
depends on SPIM_RK29 && !ARCH_RK2928
help
enable SPI1 master controller for RK29
config RK_SPIM_TEST
bool "RK SPIM test"
depends on (SPIM0_RK29 && SPIM1_RK29)
config LCD_USE_SPIM_CONTROL
bool "Switch gpio to spim with spin lock"