[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/arch/arm/mach-pxa/gumstix.c b/src/kernel/linux/v4.14/arch/arm/mach-pxa/gumstix.c
new file mode 100644
index 0000000..9c5b2fb
--- /dev/null
+++ b/src/kernel/linux/v4.14/arch/arm/mach-pxa/gumstix.c
@@ -0,0 +1,243 @@
+/*
+ * linux/arch/arm/mach-pxa/gumstix.c
+ *
+ * Support for the Gumstix motherboards.
+ *
+ * Original Author: Craig Hughes
+ * Created: Feb 14, 2008
+ * Copyright: Craig Hughes
+ *
+ * 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.
+ *
+ * Implemented based on lubbock.c by Nicolas Pitre and code from Craig
+ * Hughes
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/gpio.h>
+#include <linux/err.h>
+#include <linux/clk.h>
+#include <linux/usb/gpio_vbus.h>
+
+#include <asm/setup.h>
+#include <asm/memory.h>
+#include <asm/mach-types.h>
+#include <mach/hardware.h>
+#include <asm/irq.h>
+#include <asm/sizes.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/flash.h>
+
+#include "pxa25x.h"
+#include <linux/platform_data/mmc-pxamci.h>
+#include "udc.h"
+#include "gumstix.h"
+
+#include "generic.h"
+
+static struct resource flash_resource = {
+ .start = 0x00000000,
+ .end = SZ_64M - 1,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct mtd_partition gumstix_partitions[] = {
+ {
+ .name = "Bootloader",
+ .size = 0x00040000,
+ .offset = 0,
+ .mask_flags = MTD_WRITEABLE /* force read-only */
+ } , {
+ .name = "rootfs",
+ .size = MTDPART_SIZ_FULL,
+ .offset = MTDPART_OFS_APPEND
+ }
+};
+
+static struct flash_platform_data gumstix_flash_data = {
+ .map_name = "cfi_probe",
+ .parts = gumstix_partitions,
+ .nr_parts = ARRAY_SIZE(gumstix_partitions),
+ .width = 2,
+};
+
+static struct platform_device gumstix_flash_device = {
+ .name = "pxa2xx-flash",
+ .id = 0,
+ .dev = {
+ .platform_data = &gumstix_flash_data,
+ },
+ .resource = &flash_resource,
+ .num_resources = 1,
+};
+
+static struct platform_device *devices[] __initdata = {
+ &gumstix_flash_device,
+};
+
+#ifdef CONFIG_MMC_PXA
+static struct pxamci_platform_data gumstix_mci_platform_data = {
+ .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
+ .gpio_card_detect = -1,
+ .gpio_card_ro = -1,
+ .gpio_power = -1,
+};
+
+static void __init gumstix_mmc_init(void)
+{
+ pxa_set_mci_info(&gumstix_mci_platform_data);
+}
+#else
+static void __init gumstix_mmc_init(void)
+{
+ pr_debug("Gumstix mmc disabled\n");
+}
+#endif
+
+#ifdef CONFIG_USB_PXA25X
+static struct gpio_vbus_mach_info gumstix_udc_info = {
+ .gpio_vbus = GPIO_GUMSTIX_USB_GPIOn,
+ .gpio_pullup = GPIO_GUMSTIX_USB_GPIOx,
+};
+
+static struct platform_device gumstix_gpio_vbus = {
+ .name = "gpio-vbus",
+ .id = -1,
+ .dev = {
+ .platform_data = &gumstix_udc_info,
+ },
+};
+
+static void __init gumstix_udc_init(void)
+{
+ platform_device_register(&gumstix_gpio_vbus);
+}
+#else
+static void gumstix_udc_init(void)
+{
+ pr_debug("Gumstix udc is disabled\n");
+}
+#endif
+
+#ifdef CONFIG_BT
+/* Normally, the bootloader would have enabled this 32kHz clock but many
+** boards still have u-boot 1.1.4 so we check if it has been turned on and
+** if not, we turn it on with a warning message. */
+static void gumstix_setup_bt_clock(void)
+{
+ int timeout = 500;
+
+ if (!(readl(OSCC) & OSCC_OOK))
+ pr_warn("32kHz clock was not on. Bootloader may need to be updated\n");
+ else
+ return;
+
+ writel(readl(OSCC) | OSCC_OON, OSCC);
+ do {
+ if (readl(OSCC) & OSCC_OOK)
+ break;
+ udelay(1);
+ } while (--timeout);
+ if (!timeout)
+ pr_err("Failed to start 32kHz clock\n");
+}
+
+static void __init gumstix_bluetooth_init(void)
+{
+ int err;
+
+ gumstix_setup_bt_clock();
+
+ err = gpio_request(GPIO_GUMSTIX_BTRESET, "BTRST");
+ if (err) {
+ pr_err("gumstix: failed request gpio for bluetooth reset\n");
+ return;
+ }
+
+ err = gpio_direction_output(GPIO_GUMSTIX_BTRESET, 1);
+ if (err) {
+ pr_err("gumstix: can't reset bluetooth\n");
+ return;
+ }
+ gpio_set_value(GPIO_GUMSTIX_BTRESET, 0);
+ udelay(100);
+ gpio_set_value(GPIO_GUMSTIX_BTRESET, 1);
+}
+#else
+static void gumstix_bluetooth_init(void)
+{
+ pr_debug("Gumstix Bluetooth is disabled\n");
+}
+#endif
+
+static unsigned long gumstix_pin_config[] __initdata = {
+ GPIO12_32KHz,
+ /* BTUART */
+ GPIO42_HWUART_RXD,
+ GPIO43_HWUART_TXD,
+ GPIO44_HWUART_CTS,
+ GPIO45_HWUART_RTS,
+ /* MMC */
+ GPIO6_MMC_CLK,
+ GPIO53_MMC_CLK,
+ GPIO8_MMC_CS0,
+};
+
+int __attribute__((weak)) am200_init(void)
+{
+ return 0;
+}
+
+int __attribute__((weak)) am300_init(void)
+{
+ return 0;
+}
+
+static void __init carrier_board_init(void)
+{
+ /*
+ * put carrier/expansion board init here if
+ * they cannot be detected programatically
+ */
+ am200_init();
+ am300_init();
+}
+
+static void __init gumstix_init(void)
+{
+ pxa2xx_mfp_config(ARRAY_AND_SIZE(gumstix_pin_config));
+
+ pxa_set_ffuart_info(NULL);
+ pxa_set_btuart_info(NULL);
+ pxa_set_stuart_info(NULL);
+ pxa_set_hwuart_info(NULL);
+
+ gumstix_bluetooth_init();
+ gumstix_udc_init();
+ gumstix_mmc_init();
+ (void) platform_add_devices(devices, ARRAY_SIZE(devices));
+ carrier_board_init();
+}
+
+MACHINE_START(GUMSTIX, "Gumstix")
+ .atag_offset = 0x100, /* match u-boot bi_boot_params */
+ .map_io = pxa25x_map_io,
+ .nr_irqs = PXA_NR_IRQS,
+ .init_irq = pxa25x_init_irq,
+ .handle_irq = pxa25x_handle_irq,
+ .init_time = pxa_timer_init,
+ .init_machine = gumstix_init,
+ .restart = pxa_restart,
+MACHINE_END