gemini: update usb driver and merge registers into one patch

Signed-off-by: Roman Yeryomin <roman@advem.lv>

SVN-Revision: 43703

1 files changed, 258 insertions, 0 deletions

diff --git a/target/linux/gemini/files/drivers/usb/host/ehci-fotg2.c b/target/linux/gemini/files/drivers/usb/host/ehci-fotg2.c
new file mode 100644
index 0000000000..4d95f2e5c8
--- /dev/null
+++ b/target/linux/gemini/files/drivers/usb/host/ehci-fotg2.c
@@ -0,0 +1,258 @@
+/*
+ *  Gemini EHCI Host Controller driver
+ *
+ *  Copyright (C) 2014 Roman Yeryomin <roman@advem.lv>
+ *  Copyright (C) 2012 Tobias Waldvogel
+ *  based on GPLd code from Sony Computer Entertainment Inc.
+ *
+ *  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; version 2 of the License.
+ */
+#include <linux/kernel.h>
+#include <linux/hrtimer.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+#include <linux/usb/ehci_pdriver.h>
+
+#include <mach/hardware.h>
+#include <mach/global_reg.h>
+
+#include "ehci.h"
+
+#define DRV_NAME			"ehci-fotg2"
+
+#define HCD_MISC			0x40
+
+#define OTGC_SCR			0x80
+#define OTGC_INT_STS			0x84
+#define OTGC_INT_EN			0x88
+
+#define GLOBAL_ISR			0xC0
+#define GLOBAL_ICR			0xC4
+
+#define GLOBAL_INT_POLARITY		(1 << 3)
+#define GLOBAL_INT_MASK_HC		(1 << 2)
+#define GLOBAL_INT_MASK_OTG		(1 << 1)
+#define GLOBAL_INT_MASK_DEV		(1 << 0)
+
+#define OTGC_SCR_ID			(1 << 21)
+#define OTGC_SCR_CROLE			(1 << 20)
+#define OTGC_SCR_VBUS_VLD		(1 << 19)
+#define OTGC_SCR_A_SRP_RESP_TYPE	(1 << 8)
+#define OTGC_SCR_A_SRP_DET_EN		(1 << 7)
+#define OTGC_SCR_A_SET_B_HNP_EN		(1 << 6)
+#define OTGC_SCR_A_BUS_DROP		(1 << 5)
+#define OTGC_SCR_A_BUS_REQ		(1 << 4)
+
+#define OTGC_INT_APLGRMV		(1 << 12)
+#define OTGC_INT_BPLGRMV		(1 << 11)
+#define OTGC_INT_OVC			(1 << 10)
+#define OTGC_INT_IDCHG			(1 << 9)
+#define OTGC_INT_RLCHG			(1 << 8)
+#define OTGC_INT_AVBUSERR		(1 << 5)
+#define OTGC_INT_ASRPDET		(1 << 4)
+#define OTGC_INT_BSRPDN			(1 << 0)
+
+#define OTGC_INT_A_TYPE	(		\
+ 		OTGC_INT_ASRPDET |	\
+		OTGC_INT_AVBUSERR |	\
+		OTGC_INT_OVC |		\
+		OTGC_INT_RLCHG |	\
+		OTGC_INT_IDCHG |	\
+		OTGC_INT_APLGRMV	\
+	)
+#define OTGC_INT_B_TYPE	(		\
+		OTGC_INT_AVBUSERR |	\
+		OTGC_INT_OVC |		\
+		OTGC_INT_RLCHG |	\
+		OTGC_INT_IDCHG		\
+	)
+
+
+static void fotg2_otg_init(struct usb_hcd *hcd)
+{
+	u32 val;
+
+	writel(GLOBAL_INT_POLARITY | GLOBAL_INT_MASK_HC |
+	       GLOBAL_INT_MASK_OTG | GLOBAL_INT_MASK_DEV,
+		hcd->regs + GLOBAL_ICR);
+
+	val = readl(hcd->regs + OTGC_SCR);
+	val &= ~(OTGC_SCR_A_SRP_RESP_TYPE | OTGC_SCR_A_SRP_DET_EN |
+		 OTGC_SCR_A_BUS_DROP      | OTGC_SCR_A_SET_B_HNP_EN);
+	val |= OTGC_SCR_A_BUS_REQ;
+	writel(val, hcd->regs + OTGC_SCR);
+
+	writel(OTGC_INT_A_TYPE, hcd->regs + OTGC_INT_EN);
+
+	/* setup MISC register, fixes timing problems */
+	val = readl(hcd->regs + HCD_MISC);
+	val |= 0xD;
+	writel(val, hcd->regs + HCD_MISC);
+
+	writel(~0, hcd->regs + GLOBAL_ISR);
+	writel(~0, hcd->regs + OTGC_INT_STS);
+}
+
+static int fotg2_ehci_reset(struct usb_hcd *hcd)
+{
+	int retval;
+
+	retval = ehci_setup(hcd);
+	if (retval)
+		return retval;
+
+	writel(GLOBAL_INT_POLARITY, hcd->regs + GLOBAL_ICR);
+	return 0;
+}
+
+static const struct hc_driver fotg2_ehci_hc_driver = {
+	.description		= hcd_name,
+	.product_desc		= "FOTG2 EHCI Host Controller",
+	.hcd_priv_size		= sizeof(struct ehci_hcd),
+	.irq			= ehci_irq,
+	.flags			= HCD_MEMORY | HCD_USB2,
+	.reset			= fotg2_ehci_reset,
+	.start			= ehci_run,
+	.stop			= ehci_stop,
+	.shutdown		= ehci_shutdown,
+	.urb_enqueue		= ehci_urb_enqueue,
+	.urb_dequeue		= ehci_urb_dequeue,
+	.endpoint_disable	= ehci_endpoint_disable,
+	.endpoint_reset		= ehci_endpoint_reset,
+	.get_frame_number	= ehci_get_frame,
+	.hub_status_data	= ehci_hub_status_data,
+	.hub_control		= ehci_hub_control,
+#if defined(CONFIG_PM)
+	.bus_suspend		= ehci_bus_suspend,
+	.bus_resume		= ehci_bus_resume,
+#endif
+	.relinquish_port	= ehci_relinquish_port,
+	.port_handed_over	= ehci_port_handed_over,
+
+	.clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
+};
+
+static irqreturn_t fotg2_ehci_irq(int irq, void *data)
+{
+	struct usb_hcd *hcd = data;
+	u32 icr, sts;
+	irqreturn_t retval;
+
+	icr = readl(hcd->regs + GLOBAL_ICR);
+	writel(GLOBAL_INT_POLARITY | GLOBAL_INT_MASK_HC |
+	       GLOBAL_INT_MASK_OTG | GLOBAL_INT_MASK_DEV,
+		hcd->regs + GLOBAL_ICR);
+
+	retval = IRQ_NONE;
+
+	sts = ~icr;
+	sts &= GLOBAL_INT_MASK_HC | GLOBAL_INT_MASK_OTG | GLOBAL_INT_MASK_DEV;
+	sts &= readl(hcd->regs + GLOBAL_ISR);
+	writel(sts, hcd->regs + GLOBAL_ISR);
+
+	if (unlikely(sts & GLOBAL_INT_MASK_DEV)) {
+		ehci_warn(hcd_to_ehci(hcd),
+			"Received unexpected irq for device role\n");
+		retval = IRQ_HANDLED;
+	}
+
+	if (unlikely(sts & GLOBAL_INT_MASK_OTG)) {
+		u32	otg_sts;
+
+		otg_sts = readl(hcd->regs + OTGC_INT_STS);
+		writel(otg_sts, hcd->regs + OTGC_INT_STS);
+
+		ehci_warn(hcd_to_ehci(hcd),
+			"Received unexpected irq for OTG management\n");
+		retval = IRQ_HANDLED;
+	}
+
+	if (sts & GLOBAL_INT_MASK_HC) {
+		retval = IRQ_NONE;
+	}
+
+	writel(icr, hcd->regs + GLOBAL_ICR);
+	return retval;
+}
+
+static int fotg2_ehci_probe(struct platform_device *pdev)
+{
+	struct usb_hcd *hcd;
+	struct resource *res;
+	int irq , err;
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0) {
+		pr_err("no irq provided");
+		return irq;
+	}
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res) {
+		pr_err("no memory resource provided");
+		return -ENXIO;
+	}
+
+	hcd = usb_create_hcd(&fotg2_ehci_hc_driver, &pdev->dev,
+			     dev_name(&pdev->dev));
+	if (!hcd)
+		return -ENOMEM;
+
+	hcd->rsrc_start = res->start;
+	hcd->rsrc_len = resource_size(res);
+
+	hcd->regs = devm_request_and_ioremap(&pdev->dev, res);
+	if (!hcd->regs) {
+		err = -ENOMEM;
+		goto err_put_hcd;
+	}
+
+	hcd->has_tt = 1;
+	hcd_to_ehci(hcd)->caps = hcd->regs;
+
+	fotg2_otg_init(hcd);
+
+	err = request_irq(irq, &fotg2_ehci_irq, IRQF_SHARED, "fotg2", hcd);
+	if (err)
+		goto err_put_hcd;
+
+	err = usb_add_hcd(hcd, irq, IRQF_SHARED);
+	if (err)
+		goto err_put_hcd;
+
+	platform_set_drvdata(pdev, hcd);
+	return 0;
+
+err_put_hcd:
+	usb_put_hcd(hcd);
+	return err;
+}
+
+static int fotg2_ehci_remove(struct platform_device *pdev)
+{
+	struct usb_hcd *hcd = platform_get_drvdata(pdev);
+
+	writel(GLOBAL_INT_POLARITY | GLOBAL_INT_MASK_HC |
+	       GLOBAL_INT_MASK_OTG | GLOBAL_INT_MASK_DEV,
+		hcd->regs + GLOBAL_ICR);
+
+	free_irq(hcd->irq, hcd);
+	usb_remove_hcd(hcd);
+	usb_put_hcd(hcd);
+	platform_set_drvdata(pdev, NULL);
+
+	return 0;
+}
+
+MODULE_ALIAS("platform:" DRV_NAME);
+
+static struct platform_driver ehci_fotg2_driver = {
+	.probe		= fotg2_ehci_probe,
+	.remove		= fotg2_ehci_remove,
+	.driver.name	= DRV_NAME,
+};