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ARM: ep93xx: Add ADC platform device support to core 

Newly provided ep93xx_register_adc() could be used by machine-specific code
to create ADC platform device on Cirrus Logic EP93xx SoC-based machines.

Signed-off-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
This commit is contained in:
Alexander Sverdlin 2015-11-22 09:49:22 +01:00
parent f2322451b4
commit 5364c6470a
3 changed files with 26 additions and 0 deletions
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24
arch/arm/mach-ep93xx/core.c
View File

@ -820,6 +820,30 @@ void ep93xx_ide_release_gpio(struct platform_device *pdev)
}
EXPORT_SYMBOL(ep93xx_ide_release_gpio);
/*************************************************************************
* EP93xx ADC
*************************************************************************/
static struct resource ep93xx_adc_resources[] = {
DEFINE_RES_MEM(EP93XX_ADC_PHYS_BASE, 0x28),
DEFINE_RES_IRQ(IRQ_EP93XX_TOUCH),
};
static struct platform_device ep93xx_adc_device = {
.name = "ep93xx-adc",
.id = -1,
.num_resources = ARRAY_SIZE(ep93xx_adc_resources),
.resource = ep93xx_adc_resources,
};
void __init ep93xx_register_adc(void)
{
/* Power up ADC, deactivate Touch Screen Controller */
ep93xx_devcfg_set_clear(EP93XX_SYSCON_DEVCFG_TIN,
EP93XX_SYSCON_DEVCFG_ADCPD);
platform_device_register(&ep93xx_adc_device);
}
/*************************************************************************
* EP93xx Security peripheral
*************************************************************************/

1
arch/arm/mach-ep93xx/include/mach/platform.h
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@ -52,6 +52,7 @@ int ep93xx_i2s_acquire(void);
void ep93xx_i2s_release(void);
void ep93xx_register_ac97(void);
void ep93xx_register_ide(void);
void ep93xx_register_adc(void);
int ep93xx_ide_acquire_gpio(struct platform_device *pdev);
void ep93xx_ide_release_gpio(struct platform_device *pdev);

1
arch/arm/mach-ep93xx/soc.h
View File

@ -95,6 +95,7 @@
#define EP93XX_KEY_MATRIX_PHYS_BASE EP93XX_APB_PHYS(0x000f0000)
#define EP93XX_KEY_MATRIX_BASE EP93XX_APB_IOMEM(0x000f0000)
#define EP93XX_ADC_PHYS_BASE EP93XX_APB_PHYS(0x00100000)
#define EP93XX_ADC_BASE EP93XX_APB_IOMEM(0x00100000)
#define EP93XX_TOUCHSCREEN_BASE EP93XX_APB_IOMEM(0x00100000)