From caec700c9a87d1565d4e3e37c5c4ce9a5e51c052 Mon Sep 17 00:00:00 2001 From: lars Date: Wed, 4 Aug 2010 13:33:55 +0000 Subject: [xburst] Drop 2.6.32 patches git-svn-id: svn://svn.openwrt.org/openwrt/trunk@22485 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- .../xburst/files-2.6.32/drivers/misc/jz4740-adc.c | 407 --------------------- 1 file changed, 407 deletions(-) delete mode 100644 target/linux/xburst/files-2.6.32/drivers/misc/jz4740-adc.c (limited to 'target/linux/xburst/files-2.6.32/drivers/misc') diff --git a/target/linux/xburst/files-2.6.32/drivers/misc/jz4740-adc.c b/target/linux/xburst/files-2.6.32/drivers/misc/jz4740-adc.c deleted file mode 100644 index c60f939a4..000000000 --- a/target/linux/xburst/files-2.6.32/drivers/misc/jz4740-adc.c +++ /dev/null @@ -1,407 +0,0 @@ -/* - * Copyright (C) 2009, Lars-Peter Clausen - * 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 -#include -#include -#include -#include -#include -#include -#include - -#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 = 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 "); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:jz4740-adc"); -MODULE_ALIAS("platform:jz4720-adc"); -- cgit v1.2.3