usb: s3c-otg: Split out PHY control
Split the Samsung specific PHY control into a separate file
and compile this into the S3C OTG driver only if used on a
Samsung system.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <clsee@altera.com>
Cc: Dinh Nguyen <dinguyen@opensource.altera.com>
Cc: Vince Bridgers <vbridger@altera.com>
Acked-by: Pavel Machek <pavel@denx.de>
Cc: Stefan Roese <sr@denx.de>
Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>
Tested-by: Lukasz Majewski <l.majewski@samsung.com>
diff --git a/drivers/usb/gadget/s3c_udc_otg_phy.c b/drivers/usb/gadget/s3c_udc_otg_phy.c
new file mode 100644
index 0000000..f13cb89
--- /dev/null
+++ b/drivers/usb/gadget/s3c_udc_otg_phy.c
@@ -0,0 +1,101 @@
+/*
+ * drivers/usb/gadget/s3c_udc_otg.c
+ * Samsung S3C on-chip full/high speed USB OTG 2.0 device controllers
+ *
+ * Copyright (C) 2008 for Samsung Electronics
+ *
+ * BSP Support for Samsung's UDC driver
+ * available at:
+ * git://git.kernel.org/pub/scm/linux/kernel/git/kki_ap/linux-2.6-samsung.git
+ *
+ * State machine bugfixes:
+ * Marek Szyprowski <m.szyprowski@samsung.com>
+ *
+ * Ported to u-boot:
+ * Marek Szyprowski <m.szyprowski@samsung.com>
+ * Lukasz Majewski <l.majewski@samsumg.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/errno.h>
+#include <linux/list.h>
+#include <malloc.h>
+
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+
+#include <asm/byteorder.h>
+#include <asm/unaligned.h>
+#include <asm/io.h>
+
+#include <asm/mach-types.h>
+
+#include "regs-otg.h"
+#include <usb/lin_gadget_compat.h>
+
+#include <usb/s3c_udc.h>
+
+void otg_phy_init(struct s3c_udc *dev)
+{
+ unsigned int usb_phy_ctrl = dev->pdata->usb_phy_ctrl;
+ struct s3c_usbotg_phy *phy =
+ (struct s3c_usbotg_phy *)dev->pdata->regs_phy;
+
+ dev->pdata->phy_control(1);
+
+ /* USB PHY0 Enable */
+ printf("USB PHY0 Enable\n");
+
+ /* Enable PHY */
+ writel(readl(usb_phy_ctrl) | USB_PHY_CTRL_EN0, usb_phy_ctrl);
+
+ if (dev->pdata->usb_flags == PHY0_SLEEP) /* C210 Universal */
+ writel((readl(&phy->phypwr)
+ &~(PHY_0_SLEEP | OTG_DISABLE_0 | ANALOG_PWRDOWN)
+ &~FORCE_SUSPEND_0), &phy->phypwr);
+ else /* C110 GONI */
+ writel((readl(&phy->phypwr) &~(OTG_DISABLE_0 | ANALOG_PWRDOWN)
+ &~FORCE_SUSPEND_0), &phy->phypwr);
+
+ if (s5p_cpu_id == 0x4412)
+ writel((readl(&phy->phyclk) & ~(EXYNOS4X12_ID_PULLUP0 |
+ EXYNOS4X12_COMMON_ON_N0)) | EXYNOS4X12_CLK_SEL_24MHZ,
+ &phy->phyclk); /* PLL 24Mhz */
+ else
+ writel((readl(&phy->phyclk) & ~(ID_PULLUP0 | COMMON_ON_N0)) |
+ CLK_SEL_24MHZ, &phy->phyclk); /* PLL 24Mhz */
+
+ writel((readl(&phy->rstcon) &~(LINK_SW_RST | PHYLNK_SW_RST))
+ | PHY_SW_RST0, &phy->rstcon);
+ udelay(10);
+ writel(readl(&phy->rstcon)
+ &~(PHY_SW_RST0 | LINK_SW_RST | PHYLNK_SW_RST), &phy->rstcon);
+ udelay(10);
+}
+
+void otg_phy_off(struct s3c_udc *dev)
+{
+ unsigned int usb_phy_ctrl = dev->pdata->usb_phy_ctrl;
+ struct s3c_usbotg_phy *phy =
+ (struct s3c_usbotg_phy *)dev->pdata->regs_phy;
+
+ /* reset controller just in case */
+ writel(PHY_SW_RST0, &phy->rstcon);
+ udelay(20);
+ writel(readl(&phy->phypwr) &~PHY_SW_RST0, &phy->rstcon);
+ udelay(20);
+
+ writel(readl(&phy->phypwr) | OTG_DISABLE_0 | ANALOG_PWRDOWN
+ | FORCE_SUSPEND_0, &phy->phypwr);
+
+ writel(readl(usb_phy_ctrl) &~USB_PHY_CTRL_EN0, usb_phy_ctrl);
+
+ writel((readl(&phy->phyclk) & ~(ID_PULLUP0 | COMMON_ON_N0)),
+ &phy->phyclk);
+
+ udelay(10000);
+
+ dev->pdata->phy_control(0);
+}