[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/arch/arm/common/scoop.c b/src/kernel/linux/v4.14/arch/arm/common/scoop.c
new file mode 100644
index 0000000..9ba45ad
--- /dev/null
+++ b/src/kernel/linux/v4.14/arch/arm/common/scoop.c
@@ -0,0 +1,275 @@
+/*
+ * Support code for the SCOOP interface found on various Sharp PDAs
+ *
+ * Copyright (c) 2004 Richard Purdie
+ *
+ * Based on code written by Sharp/Lineo for 2.4 kernels
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/device.h>
+#include <linux/gpio.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/export.h>
+#include <linux/io.h>
+#include <asm/hardware/scoop.h>
+
+/* PCMCIA to Scoop linkage
+
+ There is no easy way to link multiple scoop devices into one
+ single entity for the pxa2xx_pcmcia device so this structure
+ is used which is setup by the platform code.
+
+ This file is never modular so this symbol is always
+ accessile to the board support files.
+*/
+struct scoop_pcmcia_config *platform_scoop_config;
+EXPORT_SYMBOL(platform_scoop_config);
+
+struct scoop_dev {
+ void __iomem *base;
+ struct gpio_chip gpio;
+ spinlock_t scoop_lock;
+ unsigned short suspend_clr;
+ unsigned short suspend_set;
+ u32 scoop_gpwr;
+};
+
+void reset_scoop(struct device *dev)
+{
+ struct scoop_dev *sdev = dev_get_drvdata(dev);
+
+ iowrite16(0x0100, sdev->base + SCOOP_MCR); /* 00 */
+ iowrite16(0x0000, sdev->base + SCOOP_CDR); /* 04 */
+ iowrite16(0x0000, sdev->base + SCOOP_CCR); /* 10 */
+ iowrite16(0x0000, sdev->base + SCOOP_IMR); /* 18 */
+ iowrite16(0x00FF, sdev->base + SCOOP_IRM); /* 14 */
+ iowrite16(0x0000, sdev->base + SCOOP_ISR); /* 1C */
+ iowrite16(0x0000, sdev->base + SCOOP_IRM);
+}
+
+static void __scoop_gpio_set(struct scoop_dev *sdev,
+ unsigned offset, int value)
+{
+ unsigned short gpwr;
+
+ gpwr = ioread16(sdev->base + SCOOP_GPWR);
+ if (value)
+ gpwr |= 1 << (offset + 1);
+ else
+ gpwr &= ~(1 << (offset + 1));
+ iowrite16(gpwr, sdev->base + SCOOP_GPWR);
+}
+
+static void scoop_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+{
+ struct scoop_dev *sdev = gpiochip_get_data(chip);
+ unsigned long flags;
+
+ spin_lock_irqsave(&sdev->scoop_lock, flags);
+
+ __scoop_gpio_set(sdev, offset, value);
+
+ spin_unlock_irqrestore(&sdev->scoop_lock, flags);
+}
+
+static int scoop_gpio_get(struct gpio_chip *chip, unsigned offset)
+{
+ struct scoop_dev *sdev = gpiochip_get_data(chip);
+
+ /* XXX: I'm unsure, but it seems so */
+ return !!(ioread16(sdev->base + SCOOP_GPRR) & (1 << (offset + 1)));
+}
+
+static int scoop_gpio_direction_input(struct gpio_chip *chip,
+ unsigned offset)
+{
+ struct scoop_dev *sdev = gpiochip_get_data(chip);
+ unsigned long flags;
+ unsigned short gpcr;
+
+ spin_lock_irqsave(&sdev->scoop_lock, flags);
+
+ gpcr = ioread16(sdev->base + SCOOP_GPCR);
+ gpcr &= ~(1 << (offset + 1));
+ iowrite16(gpcr, sdev->base + SCOOP_GPCR);
+
+ spin_unlock_irqrestore(&sdev->scoop_lock, flags);
+
+ return 0;
+}
+
+static int scoop_gpio_direction_output(struct gpio_chip *chip,
+ unsigned offset, int value)
+{
+ struct scoop_dev *sdev = gpiochip_get_data(chip);
+ unsigned long flags;
+ unsigned short gpcr;
+
+ spin_lock_irqsave(&sdev->scoop_lock, flags);
+
+ __scoop_gpio_set(sdev, offset, value);
+
+ gpcr = ioread16(sdev->base + SCOOP_GPCR);
+ gpcr |= 1 << (offset + 1);
+ iowrite16(gpcr, sdev->base + SCOOP_GPCR);
+
+ spin_unlock_irqrestore(&sdev->scoop_lock, flags);
+
+ return 0;
+}
+
+unsigned short read_scoop_reg(struct device *dev, unsigned short reg)
+{
+ struct scoop_dev *sdev = dev_get_drvdata(dev);
+ return ioread16(sdev->base + reg);
+}
+
+void write_scoop_reg(struct device *dev, unsigned short reg, unsigned short data)
+{
+ struct scoop_dev *sdev = dev_get_drvdata(dev);
+ iowrite16(data, sdev->base + reg);
+}
+
+EXPORT_SYMBOL(reset_scoop);
+EXPORT_SYMBOL(read_scoop_reg);
+EXPORT_SYMBOL(write_scoop_reg);
+
+#ifdef CONFIG_PM
+static void check_scoop_reg(struct scoop_dev *sdev)
+{
+ unsigned short mcr;
+
+ mcr = ioread16(sdev->base + SCOOP_MCR);
+ if ((mcr & 0x100) == 0)
+ iowrite16(0x0101, sdev->base + SCOOP_MCR);
+}
+
+static int scoop_suspend(struct platform_device *dev, pm_message_t state)
+{
+ struct scoop_dev *sdev = platform_get_drvdata(dev);
+
+ check_scoop_reg(sdev);
+ sdev->scoop_gpwr = ioread16(sdev->base + SCOOP_GPWR);
+ iowrite16((sdev->scoop_gpwr & ~sdev->suspend_clr) | sdev->suspend_set, sdev->base + SCOOP_GPWR);
+
+ return 0;
+}
+
+static int scoop_resume(struct platform_device *dev)
+{
+ struct scoop_dev *sdev = platform_get_drvdata(dev);
+
+ check_scoop_reg(sdev);
+ iowrite16(sdev->scoop_gpwr, sdev->base + SCOOP_GPWR);
+
+ return 0;
+}
+#else
+#define scoop_suspend NULL
+#define scoop_resume NULL
+#endif
+
+static int scoop_probe(struct platform_device *pdev)
+{
+ struct scoop_dev *devptr;
+ struct scoop_config *inf;
+ struct resource *mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ int ret;
+
+ if (!mem)
+ return -EINVAL;
+
+ devptr = kzalloc(sizeof(struct scoop_dev), GFP_KERNEL);
+ if (!devptr)
+ return -ENOMEM;
+
+ spin_lock_init(&devptr->scoop_lock);
+
+ inf = pdev->dev.platform_data;
+ devptr->base = ioremap(mem->start, resource_size(mem));
+
+ if (!devptr->base) {
+ ret = -ENOMEM;
+ goto err_ioremap;
+ }
+
+ platform_set_drvdata(pdev, devptr);
+
+ printk("Sharp Scoop Device found at 0x%08x -> 0x%8p\n",(unsigned int)mem->start, devptr->base);
+
+ iowrite16(0x0140, devptr->base + SCOOP_MCR);
+ reset_scoop(&pdev->dev);
+ iowrite16(0x0000, devptr->base + SCOOP_CPR);
+ iowrite16(inf->io_dir & 0xffff, devptr->base + SCOOP_GPCR);
+ iowrite16(inf->io_out & 0xffff, devptr->base + SCOOP_GPWR);
+
+ devptr->suspend_clr = inf->suspend_clr;
+ devptr->suspend_set = inf->suspend_set;
+
+ devptr->gpio.base = -1;
+
+ if (inf->gpio_base != 0) {
+ devptr->gpio.label = dev_name(&pdev->dev);
+ devptr->gpio.base = inf->gpio_base;
+ devptr->gpio.ngpio = 12; /* PA11 = 0, PA12 = 1, etc. up to PA22 = 11 */
+ devptr->gpio.set = scoop_gpio_set;
+ devptr->gpio.get = scoop_gpio_get;
+ devptr->gpio.direction_input = scoop_gpio_direction_input;
+ devptr->gpio.direction_output = scoop_gpio_direction_output;
+
+ ret = gpiochip_add_data(&devptr->gpio, devptr);
+ if (ret)
+ goto err_gpio;
+ }
+
+ return 0;
+
+err_gpio:
+ platform_set_drvdata(pdev, NULL);
+err_ioremap:
+ iounmap(devptr->base);
+ kfree(devptr);
+
+ return ret;
+}
+
+static int scoop_remove(struct platform_device *pdev)
+{
+ struct scoop_dev *sdev = platform_get_drvdata(pdev);
+
+ if (!sdev)
+ return -EINVAL;
+
+ if (sdev->gpio.base != -1)
+ gpiochip_remove(&sdev->gpio);
+
+ platform_set_drvdata(pdev, NULL);
+ iounmap(sdev->base);
+ kfree(sdev);
+
+ return 0;
+}
+
+static struct platform_driver scoop_driver = {
+ .probe = scoop_probe,
+ .remove = scoop_remove,
+ .suspend = scoop_suspend,
+ .resume = scoop_resume,
+ .driver = {
+ .name = "sharp-scoop",
+ },
+};
+
+static int __init scoop_init(void)
+{
+ return platform_driver_register(&scoop_driver);
+}
+
+subsys_initcall(scoop_init);