ENGR00181365-1: ADC: Add platform support for ADC driver

Add platform support for ADC driver.

Signed-off-by: Wang Xiaojun <b41435@freescale.com>

8 files changed, 89 insertions, 1 deletions

diff --git a/arch/arm/mach-mvf/board-twr-vf700.c b/arch/arm/mach-mvf/board-twr-vf700.c
index a267df7a303f..d64622b2db19 100644
--- a/arch/arm/mach-mvf/board-twr-vf700.c
+++ b/arch/arm/mach-mvf/board-twr-vf700.c
@@ -443,6 +443,11 @@ static void __init mvf_twr_init_usb(void)
 #endif
 }
 
+static void __init mvf_init_adc(void)
+{
+	mvf_add_adc(0);
+}
+
 /*!
  * Board specific initialization.
  */
@@ -462,6 +467,8 @@ static void __init mvf_board_init(void)
 
 	mvf_add_snvs_rtc();
 
+	mvf_init_adc();
+
 	mvf_add_pm_imx(0, &mvf_vf600_pm_data);
 
 	mvf_add_sdhci_esdhc_imx(1, &mvfa5_sd1_data);
diff --git a/arch/arm/mach-mvf/clock.c b/arch/arm/mach-mvf/clock.c
index 140f0edee565..16d86fb73368 100644
--- a/arch/arm/mach-mvf/clock.c
+++ b/arch/arm/mach-mvf/clock.c
@@ -1626,6 +1626,18 @@ static struct clk pit_clk = {
 	 .get_rate = _clk_uart_get_rate,
 };
 
+static struct clk adc_clk[] = {
+	{
+		__INIT_CLK_DEBUG(adc_clk)
+		.id = 0,
+		.parent = &ipg_clk,
+		.enable_reg = MXC_CCM_CCGR1,
+		.enable_shift = MXC_CCM_CCGRx_CG11_OFFSET,
+		.enable = _clk_enable,
+		.disable = _clk_disable,
+	},
+};
+
 static struct clk i2c_clk[] = {
 	{
 		__INIT_CLK_DEBUG(i2c_clk_0)
@@ -1886,6 +1898,7 @@ static struct clk_lookup lookups[] = {
 	_REGISTER_CLOCK("pit", NULL, pit_clk),
 	_REGISTER_CLOCK("fec.0", NULL, enet_clk[0]),
 	_REGISTER_CLOCK("fec.1", NULL, enet_clk[1]),
+	_REGISTER_CLOCK("mvf-adc.0", NULL, adc_clk[0]),
 	_REGISTER_CLOCK("switch.0", NULL, enet_clk[0]),
 	_REGISTER_CLOCK("imx2-wdt.0", NULL, dummy_clk),
 	_REGISTER_CLOCK("sdhci-esdhc-imx.1", NULL, esdhc1_clk),
diff --git a/arch/arm/mach-mvf/devices-mvf.h b/arch/arm/mach-mvf/devices-mvf.h
index b8bea993bdee..6bc61871fd5e 100644
--- a/arch/arm/mach-mvf/devices-mvf.h
+++ b/arch/arm/mach-mvf/devices-mvf.h
@@ -144,6 +144,10 @@ extern const struct imx_imx2_wdt_data mvf_imx2_wdt_data[] __initconst;
 #define mvf_add_imx2_wdt(id, pdata)   \
 	imx_add_imx2_wdt(&mvf_imx2_wdt_data[id])
 
+extern const struct mvf_adc_data mvfa5_adc_data[] __initconst;
+#define mvf_add_adc(id)	\
+	mvf_add_adcdev(&mvfa5_adc_data[id])
+
 extern const struct imx_imx2_wdt_data fsl_imx2_wdt_data[] __initconst;
 #define mvf_add_wdt(id)   \
 	imx_add_imx2_wdt(&fsl_imx2_wdt_data[id])
diff --git a/arch/arm/plat-mxc/devices/Kconfig b/arch/arm/plat-mxc/devices/Kconfig
index de80caba49c3..22e160789d06 100755
--- a/arch/arm/plat-mxc/devices/Kconfig
+++ b/arch/arm/plat-mxc/devices/Kconfig
@@ -28,6 +28,10 @@ config IMX_HAVE_PLATFORM_IMX21_HCD
 config IMX_HAVE_PLATFORM_IMX2_WDT
 	bool
 
+config IMX_HAVE_PLATFORM_MVF_ADC
+	bool
+	default y if ARCH_MVF
+
 config IMX_HAVE_PLATFORM_IMXDI_RTC
 	bool
 
diff --git a/arch/arm/plat-mxc/devices/Makefile b/arch/arm/plat-mxc/devices/Makefile
index 63be99251f08..45d9869bd730 100755
--- a/arch/arm/plat-mxc/devices/Makefile
+++ b/arch/arm/plat-mxc/devices/Makefile
@@ -62,5 +62,6 @@ obj-$(CONFIG_IMX_HAVE_PLATFORM_IMX_ASRC) += platform-imx-asrc.o
 obj-$(CONFIG_IMX_HAVE_PLATFORM_IMX_MIPI_DSI) += platform-imx-mipi_dsi.o
 obj-$(CONFIG_IMX_HAVE_PLATFORM_IMX_MIPI_CSI2) += platform-imx-mipi_csi2.o
 obj-$(CONFIG_IMX_HAVE_PLATFORM_MVF_SPI) += platform-mvf-spi.o
+obj-$(CONFIG_IMX_HAVE_PLATFORM_MVF_ADC) += platform-mvf-adc.o
 obj-$(CONFIG_IMX_HAVE_PLATFORM_MVF_DCU) += platform-mvf-dcu.o
 obj-$(CONFIG_IMX_HAVE_PLATFORM_MVF_SAI) += platform-mvf-sai.o
diff --git a/arch/arm/plat-mxc/devices/platform-mvf-adc.c b/arch/arm/plat-mxc/devices/platform-mvf-adc.c
new file mode 100644
index 000000000000..38add8b5fd4f
--- /dev/null
+++ b/arch/arm/plat-mxc/devices/platform-mvf-adc.c
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <asm/sizes.h>
+#include <mach/hardware.h>
+#include <mach/devices-common.h>
+#include <linux/clk.h>
+#include <linux/gpio.h>
+
+#define mvf_adc_data_entry_single(soc, _id, _size)		\
+	{							\
+		.id = _id,					\
+		.iobase = soc ## _ADC ## _id ## _BASE_ADDR,	\
+		.iosize = _size,				\
+		.irq = soc ## _INT_ADC ## _id,			\
+	}
+#define mvf_adc_data_entry(soc, _id, _size)	\
+	[_id] = mvf_adc_data_entry_single(soc, _id, _size)
+
+#ifdef CONFIG_SOC_MVFA5
+const struct mvf_adc_data mvfa5_adc_data[] __initconst = {
+	 mvf_adc_data_entry(MVF, 0, SZ_4K),
+};
+#endif
+
+struct platform_device *__init mvf_add_adcdev(
+		const struct mvf_adc_data *data)
+{
+	struct resource res[] = {
+		{
+			.start = data->iobase,
+			.end = data->iobase + data->iosize - 1,
+			.flags = IORESOURCE_MEM,
+		},
+		{
+			.start = data->irq,
+			.end = data->irq,
+			.flags = IORESOURCE_IRQ,
+		},
+	};
+
+	return imx_add_platform_device("mvf-adc", data->id, res,
+			ARRAY_SIZE(res), NULL, 0);
+}
diff --git a/arch/arm/plat-mxc/include/mach/devices-common.h b/arch/arm/plat-mxc/include/mach/devices-common.h
index a8a8034c1010..3cdcceaea09f 100755
--- a/arch/arm/plat-mxc/include/mach/devices-common.h
+++ b/arch/arm/plat-mxc/include/mach/devices-common.h
@@ -89,6 +89,15 @@ struct imx_imx2_wdt_data {
 struct platform_device *__init imx_add_imx2_wdt(
 		const struct imx_imx2_wdt_data *data);
 
+struct mvf_adc_data {
+	int id;
+	resource_size_t iobase;
+	resource_size_t iosize;
+	resource_size_t irq;
+};
+struct platform_device *__init mvf_add_adcdev(
+		const struct mvf_adc_data *data);
+
 struct imx_imxdi_rtc_data {
 	resource_size_t iobase;
 	resource_size_t irq;
diff --git a/arch/arm/plat-mxc/include/mach/mvf.h b/arch/arm/plat-mxc/include/mach/mvf.h
index 1e3f74f98857..6512c4e2bac6 100644
--- a/arch/arm/plat-mxc/include/mach/mvf.h
+++ b/arch/arm/plat-mxc/include/mach/mvf.h
@@ -145,7 +145,7 @@
 #define MVF_PIT_BASE_ADDR	(MVF_AIPS0_BASE_ADDR + 0x00037000)
 #define MVF_FTM0_BASE_ADDR	(MVF_AIPS0_BASE_ADDR + 0x00038000)
 #define MVF_FTM1_BASE_ADDR	(MVF_AIPS0_BASE_ADDR + 0x00039000)
-#define MVF_ADC_BASE_ADDR	(MVF_AIPS0_BASE_ADDR + 0x0003B000)
+#define MVF_ADC0_BASE_ADDR	(MVF_AIPS0_BASE_ADDR + 0x0003B000)
 #define MVF_TCON0_BASE_ADDR	(MVF_AIPS0_BASE_ADDR + 0x0003D000)
 #define MVF_WDOG1_BASE_ADDR	(MVF_AIPS0_BASE_ADDR + 0x0003E000)
 #define MVF_LPTMR_BASE_ADDR	(MVF_AIPS0_BASE_ADDR + 0x00040000)