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| author | Alexander Sverdlin <alexander.sverdlin@gmail.com> | 2015-11-22 09:49:22 +0100 |
|---|---|---|
| committer | Alexander Sverdlin <alexander.sverdlin@gmail.com> | 2017-07-28 01:36:31 +0200 |
| commit | 5364c6470a5d4925409c677d41b8768fbf8271a3 (patch) | |
| tree | 004922ae6e8aa7ffedf5304a3e6f342013871051 /arch/arm/mach-ep93xx | |
| parent | f2322451b4cecc8f2d16b781030d1a0fc3fb071b (diff) | |
| download | linux-5364c6470a5d4925409c677d41b8768fbf8271a3.tar.gz linux-5364c6470a5d4925409c677d41b8768fbf8271a3.tar.bz2 linux-5364c6470a5d4925409c677d41b8768fbf8271a3.zip | |
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>
Diffstat (limited to 'arch/arm/mach-ep93xx')
| -rw-r--r-- | arch/arm/mach-ep93xx/core.c | 24 | ||||
| -rw-r--r-- | arch/arm/mach-ep93xx/include/mach/platform.h | 1 | ||||
| -rw-r--r-- | arch/arm/mach-ep93xx/soc.h | 1 |
3 files changed, 26 insertions, 0 deletions
diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c index c393b1b0310d..f53c61813998 100644 --- a/arch/arm/mach-ep93xx/core.c +++ b/arch/arm/mach-ep93xx/core.c @@ -821,6 +821,30 @@ 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 *************************************************************************/ diff --git a/arch/arm/mach-ep93xx/include/mach/platform.h b/arch/arm/mach-ep93xx/include/mach/platform.h index 4c0bbd97f741..db0839691ef5 100644 --- a/arch/arm/mach-ep93xx/include/mach/platform.h +++ b/arch/arm/mach-ep93xx/include/mach/platform.h @@ -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); diff --git a/arch/arm/mach-ep93xx/soc.h b/arch/arm/mach-ep93xx/soc.h index 7bf7ff8beae7..d20e631164cf 100644 --- a/arch/arm/mach-ep93xx/soc.h +++ b/arch/arm/mach-ep93xx/soc.h @@ -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) |