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-rw-r--r--target/linux/xburst/patches-2.6.34/053-adc.patch498
1 files changed, 0 insertions, 498 deletions
diff --git a/target/linux/xburst/patches-2.6.34/053-adc.patch b/target/linux/xburst/patches-2.6.34/053-adc.patch
deleted file mode 100644
index 80f7f46550..0000000000
--- a/target/linux/xburst/patches-2.6.34/053-adc.patch
+++ /dev/null
@@ -1,498 +0,0 @@
-From 0ba56db361ac905ff2e2d4e6288206c73e3df523 Mon Sep 17 00:00:00 2001
-From: Lars-Peter Clausen <lars@metafoo.de>
-Date: Sat, 24 Apr 2010 12:18:01 +0200
-Subject: [PATCH] Add jz4740 adc driver
-
----
- drivers/misc/Kconfig | 11 ++
- drivers/misc/Makefile | 1 +
- drivers/misc/jz4740-adc.c | 410 ++++++++++++++++++++++++++++++++++++++++++++
- include/linux/jz4740-adc.h | 25 +++
- 4 files changed, 447 insertions(+), 0 deletions(-)
- create mode 100644 drivers/misc/jz4740-adc.c
- create mode 100644 include/linux/jz4740-adc.h
-
-diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
-index 0d0d625..c62f615 100644
---- a/drivers/misc/Kconfig
-+++ b/drivers/misc/Kconfig
-@@ -327,6 +327,17 @@ config VMWARE_BALLOON
- To compile this driver as a module, choose M here: the
- module will be called vmware_balloon.
-
-+config JZ4740_ADC
-+ tristate "Ingenic JZ4720/JZ4740 SoC ADC driver"
-+ depends on SOC_JZ4740
-+ help
-+ If you say yes here you get support for the Ingenic JZ4720/JZ4740 SoC ADC
-+ core. It is required for the JZ4720/JZ4740 battery and touchscreen driver
-+ and is used to synchronize access to the adc core between those two.
-+
-+ This driver can also be build as a module. If so, the module will be
-+ called jz4740-adc.
-+
- source "drivers/misc/c2port/Kconfig"
- source "drivers/misc/eeprom/Kconfig"
- source "drivers/misc/cb710/Kconfig"
-diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
-index 7b6f7ee..506bcf6 100644
---- a/drivers/misc/Makefile
-+++ b/drivers/misc/Makefile
-@@ -27,6 +27,7 @@ obj-$(CONFIG_DS1682) += ds1682.o
- obj-$(CONFIG_TI_DAC7512) += ti_dac7512.o
- obj-$(CONFIG_C2PORT) += c2port/
- obj-$(CONFIG_IWMC3200TOP) += iwmc3200top/
-+obj-$(CONFIG_JZ4740_ADC) += jz4740-adc.o
- obj-y += eeprom/
- obj-y += cb710/
- obj-$(CONFIG_VMWARE_BALLOON) += vmware_balloon.o
-diff --git a/drivers/misc/jz4740-adc.c b/drivers/misc/jz4740-adc.c
-new file mode 100644
-index 0000000..a8a735a
---- /dev/null
-+++ b/drivers/misc/jz4740-adc.c
-@@ -0,0 +1,410 @@
-+/*
-+ * Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de>
-+ * JZ4720/JZ4740 SoC ADC driver
-+ *
-+ * 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.
-+ *
-+ * You should have received a copy of the GNU General Public License along
-+ * with this program; if not, write to the Free Software Foundation, Inc.,
-+ * 675 Mass Ave, Cambridge, MA 02139, USA.
-+ *
-+ * This driver is meant to synchronize access to the adc core for the battery
-+ * and touchscreen driver. Thus these drivers should use the adc driver as a
-+ * parent.
-+ */
-+
-+#include <linux/err.h>
-+#include <linux/kernel.h>
-+#include <linux/module.h>
-+#include <linux/platform_device.h>
-+#include <linux/slab.h>
-+#include <linux/spinlock.h>
-+#include <linux/interrupt.h>
-+
-+#include <linux/clk.h>
-+
-+#include <linux/jz4740-adc.h>
-+
-+#define JZ_REG_ADC_ENABLE 0x00
-+#define JZ_REG_ADC_CFG 0x04
-+#define JZ_REG_ADC_CTRL 0x08
-+#define JZ_REG_ADC_STATUS 0x0C
-+#define JZ_REG_ADC_SAME 0x10
-+#define JZ_REG_ADC_WAIT 0x14
-+#define JZ_REG_ADC_TOUCH 0x18
-+#define JZ_REG_ADC_BATTERY 0x1C
-+#define JZ_REG_ADC_ADCIN 0x20
-+
-+#define JZ_ADC_ENABLE_TOUCH BIT(2)
-+#define JZ_ADC_ENABLE_BATTERY BIT(1)
-+#define JZ_ADC_ENABLE_ADCIN BIT(0)
-+
-+#define JZ_ADC_CFG_SPZZ BIT(31)
-+#define JZ_ADC_CFG_EX_IN BIT(30)
-+#define JZ_ADC_CFG_DNUM_MASK (0x7 << 16)
-+#define JZ_ADC_CFG_DMA_ENABLE BIT(15)
-+#define JZ_ADC_CFG_XYZ_MASK (0x2 << 13)
-+#define JZ_ADC_CFG_SAMPLE_NUM_MASK (0x7 << 10)
-+#define JZ_ADC_CFG_CLKDIV (0xf << 5)
-+#define JZ_ADC_CFG_BAT_MB BIT(4)
-+
-+#define JZ_ADC_CFG_DNUM_OFFSET 16
-+#define JZ_ADC_CFG_XYZ_OFFSET 13
-+#define JZ_ADC_CFG_SAMPLE_NUM_OFFSET 10
-+#define JZ_ADC_CFG_CLKDIV_OFFSET 5
-+
-+#define JZ_ADC_IRQ_PENDOWN BIT(4)
-+#define JZ_ADC_IRQ_PENUP BIT(3)
-+#define JZ_ADC_IRQ_TOUCH BIT(2)
-+#define JZ_ADC_IRQ_BATTERY BIT(1)
-+#define JZ_ADC_IRQ_ADCIN BIT(0)
-+
-+#define JZ_ADC_TOUCH_TYPE1 BIT(31)
-+#define JZ_ADC_TOUCH_DATA1_MASK 0xfff
-+#define JZ_ADC_TOUCH_TYPE0 BIT(15)
-+#define JZ_ADC_TOUCH_DATA0_MASK 0xfff
-+
-+#define JZ_ADC_BATTERY_MASK 0xfff
-+
-+#define JZ_ADC_ADCIN_MASK 0xfff
-+
-+struct jz4740_adc {
-+ struct resource *mem;
-+ void __iomem *base;
-+
-+ int irq;
-+
-+ struct clk *clk;
-+ unsigned int clk_ref;
-+
-+ struct completion bat_completion;
-+ struct completion adc_completion;
-+
-+ spinlock_t lock;
-+};
-+
-+static irqreturn_t jz4740_adc_irq(int irq, void *data)
-+{
-+ struct jz4740_adc *adc = data;
-+ uint8_t status;
-+
-+ status = readb(adc->base + JZ_REG_ADC_STATUS);
-+
-+ if (status & JZ_ADC_IRQ_BATTERY)
-+ complete(&adc->bat_completion);
-+ if (status & JZ_ADC_IRQ_ADCIN)
-+ complete(&adc->adc_completion);
-+
-+ writeb(0xff, adc->base + JZ_REG_ADC_STATUS);
-+
-+ return IRQ_HANDLED;
-+}
-+
-+static void jz4740_adc_enable_irq(struct jz4740_adc *adc, int irq)
-+{
-+ unsigned long flags;
-+ uint8_t val;
-+
-+ spin_lock_irqsave(&adc->lock, flags);
-+
-+ val = readb(adc->base + JZ_REG_ADC_CTRL);
-+ val &= ~irq;
-+ writeb(val, adc->base + JZ_REG_ADC_CTRL);
-+
-+ spin_unlock_irqrestore(&adc->lock, flags);
-+}
-+
-+static void jz4740_adc_disable_irq(struct jz4740_adc *adc, int irq)
-+{
-+ unsigned long flags;
-+ uint8_t val;
-+
-+ spin_lock_irqsave(&adc->lock, flags);
-+
-+ val = readb(adc->base + JZ_REG_ADC_CTRL);
-+ val |= irq;
-+ writeb(val, adc->base + JZ_REG_ADC_CTRL);
-+
-+ spin_unlock_irqrestore(&adc->lock, flags);
-+}
-+
-+static void jz4740_adc_enable_adc(struct jz4740_adc *adc, int engine)
-+{
-+ unsigned long flags;
-+ uint8_t val;
-+
-+ spin_lock_irqsave(&adc->lock, flags);
-+
-+ val = readb(adc->base + JZ_REG_ADC_ENABLE);
-+ val |= engine;
-+ writeb(val, adc->base + JZ_REG_ADC_ENABLE);
-+
-+ spin_unlock_irqrestore(&adc->lock, flags);
-+}
-+
-+static void jz4740_adc_disable_adc(struct jz4740_adc *adc, int engine)
-+{
-+ unsigned long flags;
-+ uint8_t val;
-+
-+ spin_lock_irqsave(&adc->lock, flags);
-+
-+ val = readb(adc->base + JZ_REG_ADC_ENABLE);
-+ val &= ~engine;
-+ writeb(val, adc->base + JZ_REG_ADC_ENABLE);
-+
-+ spin_unlock_irqrestore(&adc->lock, flags);
-+}
-+
-+static inline void jz4740_adc_set_cfg(struct jz4740_adc *adc, uint32_t mask,
-+uint32_t val)
-+{
-+ unsigned long flags;
-+ uint32_t cfg;
-+
-+ spin_lock_irqsave(&adc->lock, flags);
-+
-+ cfg = readl(adc->base + JZ_REG_ADC_CFG);
-+
-+ cfg &= ~mask;
-+ cfg |= val;
-+
-+ writel(cfg, adc->base + JZ_REG_ADC_CFG);
-+
-+ spin_unlock_irqrestore(&adc->lock, flags);
-+}
-+
-+static inline void jz4740_adc_clk_enable(struct jz4740_adc *adc)
-+{
-+ unsigned long flags;
-+
-+ spin_lock_irqsave(&adc->lock, flags);
-+ if (adc->clk_ref++ == 0)
-+ clk_enable(adc->clk);
-+ spin_unlock_irqrestore(&adc->lock, flags);
-+}
-+
-+static inline void jz4740_adc_clk_disable(struct jz4740_adc *adc)
-+{
-+ unsigned long flags;
-+
-+ spin_lock_irqsave(&adc->lock, flags);
-+ if (--adc->clk_ref == 0)
-+ clk_disable(adc->clk);
-+ spin_unlock_irqrestore(&adc->lock, flags);
-+}
-+
-+long jz4740_adc_read_battery_voltage(struct device *dev,
-+ enum jz_adc_battery_scale scale)
-+{
-+ struct jz4740_adc *adc = dev_get_drvdata(dev);
-+ unsigned long t;
-+ long long voltage;
-+ uint16_t val;
-+
-+ if (!adc)
-+ return -ENODEV;
-+
-+ jz4740_adc_clk_enable(adc);
-+
-+ if (scale == JZ_ADC_BATTERY_SCALE_2V5)
-+ jz4740_adc_set_cfg(adc, JZ_ADC_CFG_BAT_MB, JZ_ADC_CFG_BAT_MB);
-+ else
-+ jz4740_adc_set_cfg(adc, JZ_ADC_CFG_BAT_MB, 0);
-+
-+ jz4740_adc_enable_irq(adc, JZ_ADC_IRQ_BATTERY);
-+ jz4740_adc_enable_adc(adc, JZ_ADC_ENABLE_BATTERY);
-+
-+ t = wait_for_completion_interruptible_timeout(&adc->bat_completion,
-+ HZ);
-+
-+ jz4740_adc_disable_irq(adc, JZ_ADC_IRQ_BATTERY);
-+
-+ if (t <= 0) {
-+ jz4740_adc_disable_adc(adc, JZ_ADC_ENABLE_BATTERY);
-+ return t ? t : -ETIMEDOUT;
-+ }
-+
-+ val = readw(adc->base + JZ_REG_ADC_BATTERY);
-+
-+ jz4740_adc_clk_disable(adc);
-+
-+ if (scale == JZ_ADC_BATTERY_SCALE_2V5)
-+ voltage = (((long long)val) * 2500000LL) >> 12LL;
-+ else
-+ voltage = ((((long long)val) * 7395000LL) >> 12LL) + 33000LL;
-+
-+ return voltage;
-+}
-+EXPORT_SYMBOL_GPL(jz4740_adc_read_battery_voltage);
-+
-+static ssize_t jz4740_adc_read_adcin(struct device *dev,
-+ struct device_attribute *dev_attr,
-+ char *buf)
-+{
-+ struct jz4740_adc *adc = dev_get_drvdata(dev);
-+ unsigned long t;
-+ uint16_t val;
-+
-+ jz4740_adc_clk_enable(adc);
-+
-+ jz4740_adc_enable_irq(adc, JZ_ADC_IRQ_ADCIN);
-+ jz4740_adc_enable_adc(adc, JZ_ADC_ENABLE_ADCIN);
-+
-+ t = wait_for_completion_interruptible_timeout(&adc->adc_completion,
-+ HZ);
-+
-+ jz4740_adc_disable_irq(adc, JZ_ADC_IRQ_ADCIN);
-+
-+ if (t <= 0) {
-+ jz4740_adc_disable_adc(adc, JZ_ADC_ENABLE_ADCIN);
-+ return t ? t : -ETIMEDOUT;
-+ }
-+
-+ val = readw(adc->base + JZ_REG_ADC_ADCIN);
-+ jz4740_adc_clk_disable(adc);
-+
-+ return sprintf(buf, "%d\n", val);
-+}
-+
-+static DEVICE_ATTR(adcin, S_IRUGO, jz4740_adc_read_adcin, NULL);
-+
-+static int __devinit jz4740_adc_probe(struct platform_device *pdev)
-+{
-+ int ret;
-+ struct jz4740_adc *adc;
-+
-+ adc = kmalloc(sizeof(*adc), GFP_KERNEL);
-+
-+ adc->irq = platform_get_irq(pdev, 0);
-+
-+ if (adc->irq < 0) {
-+ ret = adc->irq;
-+ dev_err(&pdev->dev, "Failed to get platform irq: %d\n", ret);
-+ goto err_free;
-+ }
-+
-+ adc->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+
-+ if (!adc->mem) {
-+ ret = -ENOENT;
-+ dev_err(&pdev->dev, "Failed to get platform mmio resource\n");
-+ goto err_free;
-+ }
-+
-+ adc->mem = request_mem_region(adc->mem->start, resource_size(adc->mem),
-+ pdev->name);
-+
-+ if (!adc->mem) {
-+ ret = -EBUSY;
-+ dev_err(&pdev->dev, "Failed to request mmio memory region\n");
-+ goto err_free;
-+ }
-+
-+ adc->base = ioremap_nocache(adc->mem->start, resource_size(adc->mem));
-+
-+ if (!adc->base) {
-+ ret = -EBUSY;
-+ dev_err(&pdev->dev, "Failed to ioremap mmio memory\n");
-+ goto err_release_mem_region;
-+ }
-+
-+ adc->clk = clk_get(&pdev->dev, "adc");
-+
-+ if (IS_ERR(adc->clk)) {
-+ ret = PTR_ERR(adc->clk);
-+ dev_err(&pdev->dev, "Failed to get clock: %d\n", ret);
-+ goto err_iounmap;
-+ }
-+
-+ init_completion(&adc->bat_completion);
-+ init_completion(&adc->adc_completion);
-+
-+ spin_lock_init(&adc->lock);
-+
-+ adc->clk_ref = 0;
-+
-+ platform_set_drvdata(pdev, adc);
-+
-+ ret = request_irq(adc->irq, jz4740_adc_irq, 0, pdev->name, adc);
-+
-+ if (ret) {
-+ dev_err(&pdev->dev, "Failed to request irq: %d\n", ret);
-+ goto err_clk_put;
-+ }
-+
-+ ret = device_create_file(&pdev->dev, &dev_attr_adcin);
-+ if (ret) {
-+ dev_err(&pdev->dev, "Failed to create sysfs file: %d\n", ret);
-+ goto err_free_irq;
-+ }
-+
-+ writeb(0x00, adc->base + JZ_REG_ADC_ENABLE);
-+ writeb(0xff, adc->base + JZ_REG_ADC_CTRL);
-+
-+ return 0;
-+
-+err_free_irq:
-+ free_irq(adc->irq, adc);
-+err_clk_put:
-+ clk_put(adc->clk);
-+err_iounmap:
-+ platform_set_drvdata(pdev, NULL);
-+ iounmap(adc->base);
-+err_release_mem_region:
-+ release_mem_region(adc->mem->start, resource_size(adc->mem));
-+err_free:
-+ kfree(adc);
-+
-+ return ret;
-+}
-+
-+static int __devexit jz4740_adc_remove(struct platform_device *pdev)
-+{
-+ struct jz4740_adc *adc = platform_get_drvdata(pdev);
-+
-+ device_remove_file(&pdev->dev, &dev_attr_adcin);
-+
-+ free_irq(adc->irq, adc);
-+
-+ iounmap(adc->base);
-+ release_mem_region(adc->mem->start, resource_size(adc->mem));
-+
-+ clk_put(adc->clk);
-+
-+ platform_set_drvdata(pdev, NULL);
-+
-+ kfree(adc);
-+
-+ return 0;
-+}
-+
-+struct platform_driver jz4740_adc_driver = {
-+ .probe = jz4740_adc_probe,
-+ .remove = __devexit_p(jz4740_adc_remove),
-+ .driver = {
-+ .name = "jz4740-adc",
-+ .owner = THIS_MODULE,
-+ },
-+};
-+
-+static int __init jz4740_adc_init(void)
-+{
-+ return platform_driver_register(&jz4740_adc_driver);
-+}
-+module_init(jz4740_adc_init);
-+
-+static void __exit jz4740_adc_exit(void)
-+{
-+ platform_driver_unregister(&jz4740_adc_driver);
-+}
-+module_exit(jz4740_adc_exit);
-+
-+MODULE_DESCRIPTION("JZ4720/JZ4740 SoC ADC driver");
-+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
-+MODULE_LICENSE("GPL");
-+MODULE_ALIAS("platform:jz4740-adc");
-+MODULE_ALIAS("platform:jz4720-adc");
-diff --git a/include/linux/jz4740-adc.h b/include/linux/jz4740-adc.h
-new file mode 100644
-index 0000000..59cfe63
---- /dev/null
-+++ b/include/linux/jz4740-adc.h
-@@ -0,0 +1,25 @@
-+
-+#ifndef __LINUX_JZ4740_ADC
-+#define __LINUX_JZ4740_ADC
-+
-+#include <linux/device.h>
-+
-+enum jz_adc_battery_scale {
-+ JZ_ADC_BATTERY_SCALE_2V5, /* Mesures voltages up to 2.5V */
-+ JZ_ADC_BATTERY_SCALE_7V5, /* Mesures voltages up to 7.5V */
-+};
-+
-+/*
-+ * jz4740_adc_read_battery_voltage - Read battery voltage from the ADC PBAT pin
-+ * @dev: Pointer to a jz4740-adc device
-+ * @scale: Whether to use 2.5V or 7.5V scale
-+ *
-+ * Returns: Battery voltage in mircovolts
-+ *
-+ * Context: Process
-+*/
-+long jz4740_adc_read_battery_voltage(struct device *dev,
-+ enum jz_adc_battery_scale scale);
-+
-+
-+#endif
---
-1.5.6.5
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-07 23:44:13 +0000