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d2fdece2e1
openwrt/target/linux/layerscape/patches-4.9/817-usb-support-layerscape.patch
Stijn Tintel d2fdece2e1 layerscape: refresh patches 
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
2017-10-08 16:34:37 +03:00

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From f8daa8e984213554008e73cd155530dceec5a109 Mon Sep 17 00:00:00 2001
From: Yangbo Lu <yangbo.lu@nxp.com>
Date: Wed, 27 Sep 2017 10:34:07 +0800
Subject: [PATCH] usb: support layerscape
This is a integrated patch for layerscape usb support.
Signed-off-by: yinbo.zhu <yinbo.zhu@nxp.com>
Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com>
Signed-off-by: Nikhil Badola <nikhil.badola@freescale.com>
Signed-off-by: Changming Huang <jerry.huang@nxp.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Rajesh Bhagat <rajesh.bhagat@freescale.com>
Signed-off-by: Suresh Gupta <suresh.gupta@freescale.com>
Signed-off-by: Zhao Chenhui <chenhui.zhao@freescale.com>
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
---
drivers/usb/common/common.c | 50 ++++++
drivers/usb/core/hub.c | 8 +
drivers/usb/dwc3/core.c | 235 ++++++++++++++++++++++++++-
drivers/usb/dwc3/core.h | 46 +++++-
drivers/usb/dwc3/host.c | 15 +-
drivers/usb/gadget/udc/fsl_udc_core.c | 46 +++---
drivers/usb/gadget/udc/fsl_usb2_udc.h | 16 +-
drivers/usb/host/Kconfig | 2 +-
drivers/usb/host/ehci-fsl.c | 289 +++++++++++++++++++++++++++++++---
drivers/usb/host/ehci-fsl.h | 3 +
drivers/usb/host/ehci-hub.c | 2 +
drivers/usb/host/ehci.h | 5 +
drivers/usb/host/fsl-mph-dr-of.c | 12 ++
drivers/usb/phy/phy-fsl-usb.c | 59 +++++--
drivers/usb/phy/phy-fsl-usb.h | 8 +
include/linux/usb.h | 1 +
include/linux/usb/of.h | 2 +
17 files changed, 726 insertions(+), 73 deletions(-)
--- a/drivers/usb/common/common.c
+++ b/drivers/usb/common/common.c
@@ -105,6 +105,56 @@ static const char *const usb_dr_modes[]
[USB_DR_MODE_OTG] = "otg",
};
+/**
+ * of_usb_get_dr_mode - Get dual role mode for given device_node
+ * @np: Pointer to the given device_node
+ *
+ * The function gets phy interface string from property 'dr_mode',
+ * and returns the correspondig enum usb_dr_mode
+ */
+enum usb_dr_mode of_usb_get_dr_mode(struct device_node *np)
+{
+ const char *dr_mode;
+ int err, i;
+
+ err = of_property_read_string(np, "dr_mode", &dr_mode);
+ if (err < 0)
+ return USB_DR_MODE_UNKNOWN;
+
+ for (i = 0; i < ARRAY_SIZE(usb_dr_modes); i++)
+ if (!strcmp(dr_mode, usb_dr_modes[i]))
+ return i;
+
+ return USB_DR_MODE_UNKNOWN;
+}
+EXPORT_SYMBOL_GPL(of_usb_get_dr_mode);
+
+/**
+ * of_usb_get_maximum_speed - Get maximum requested speed for a given USB
+ * controller.
+ * @np: Pointer to the given device_node
+ *
+ * The function gets the maximum speed string from property "maximum-speed",
+ * and returns the corresponding enum usb_device_speed.
+ */
+enum usb_device_speed of_usb_get_maximum_speed(struct device_node *np)
+{
+ const char *maximum_speed;
+ int err;
+ int i;
+
+ err = of_property_read_string(np, "maximum-speed", &maximum_speed);
+ if (err < 0)
+ return USB_SPEED_UNKNOWN;
+
+ for (i = 0; i < ARRAY_SIZE(speed_names); i++)
+ if (strcmp(maximum_speed, speed_names[i]) == 0)
+ return i;
+
+ return USB_SPEED_UNKNOWN;
+}
+EXPORT_SYMBOL_GPL(of_usb_get_maximum_speed);
+
static enum usb_dr_mode usb_get_dr_mode_from_string(const char *str)
{
int ret;
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -4412,6 +4412,14 @@ hub_port_init(struct usb_hub *hub, struc
else
speed = usb_speed_string(udev->speed);
+#if !defined(CONFIG_FSL_USB2_OTG) && !defined(CONFIG_FSL_USB2_OTG_MODULE)
+if (udev->speed != USB_SPEED_SUPER)
+ dev_info(&udev->dev,
+ "%s %s USB device number %d using %s\n",
+ (udev->config) ? "reset" : "new", speed,
+ devnum, udev->bus->controller->driver->name);
+#endif
+
if (udev->speed < USB_SPEED_SUPER)
dev_info(&udev->dev,
"%s %s USB device number %d using %s\n",
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -58,6 +58,7 @@ static int dwc3_get_dr_mode(struct dwc3
enum usb_dr_mode mode;
struct device *dev = dwc->dev;
unsigned int hw_mode;
+ struct device_node *node = dev->of_node;
if (dwc->dr_mode == USB_DR_MODE_UNKNOWN)
dwc->dr_mode = USB_DR_MODE_OTG;
@@ -83,6 +84,24 @@ static int dwc3_get_dr_mode(struct dwc3
mode = USB_DR_MODE_HOST;
break;
default:
+ /* Adjust Frame Length */
+ if (dwc->configure_gfladj)
+ dwc3_writel(dwc->regs, DWC3_GFLADJ, GFLADJ_30MHZ_REG_SEL |
+ GFLADJ_30MHZ(GFLADJ_30MHZ_DEFAULT));
+
+ /* Change burst beat and outstanding pipelined transfers requests */
+ dwc3_writel(dwc->regs, DWC3_GSBUSCFG0,
+ (dwc3_readl(dwc->regs, DWC3_GSBUSCFG0) & ~0xff) | 0xf);
+ dwc3_writel(dwc->regs, DWC3_GSBUSCFG1,
+ dwc3_readl(dwc->regs, DWC3_GSBUSCFG1) | 0xf00);
+
+ /* Enable Snooping */
+ if (node && of_dma_is_coherent(node)) {
+ dwc3_writel(dwc->regs, DWC3_GSBUSCFG0,
+ dwc3_readl(dwc->regs, DWC3_GSBUSCFG0) | 0x22220000);
+ dev_dbg(dev, "enabled snooping for usb\n");
+ }
+
if (IS_ENABLED(CONFIG_USB_DWC3_HOST))
mode = USB_DR_MODE_HOST;
else if (IS_ENABLED(CONFIG_USB_DWC3_GADGET))
@@ -213,8 +232,9 @@ static void dwc3_frame_length_adjustment
reg = dwc3_readl(dwc->regs, DWC3_GFLADJ);
dft = reg & DWC3_GFLADJ_30MHZ_MASK;
- if (!dev_WARN_ONCE(dwc->dev, dft == dwc->fladj,
- "request value same as default, ignoring\n")) {
+ if (dft == dwc->fladj) {
+ dev_warn(dwc->dev, "request value same as default, ignoring\n");
+ } else {
reg &= ~DWC3_GFLADJ_30MHZ_MASK;
reg |= DWC3_GFLADJ_30MHZ_SDBND_SEL | dwc->fladj;
dwc3_writel(dwc->regs, DWC3_GFLADJ, reg);
@@ -579,6 +599,99 @@ static int dwc3_phy_setup(struct dwc3 *d
return 0;
}
+/* set global soc bus configuration registers */
+static void dwc3_set_soc_bus_cfg(struct dwc3 *dwc)
+{
+ struct device *dev = dwc->dev;
+ u32 *vals;
+ u32 cfg;
+ int ntype;
+ int ret;
+ int i;
+
+ cfg = dwc3_readl(dwc->regs, DWC3_GSBUSCFG0);
+
+ /*
+ * Handle property "snps,incr-burst-type-adjustment".
+ * Get the number of value from this property:
+ * result <= 0, means this property is not supported.
+ * result = 1, means INCRx burst mode supported.
+ * result > 1, means undefined length burst mode supported.
+ */
+ ntype = device_property_read_u32_array(dev,
+ "snps,incr-burst-type-adjustment", NULL, 0);
+ if (ntype > 0) {
+ vals = kcalloc(ntype, sizeof(u32), GFP_KERNEL);
+ if (!vals) {
+ dev_err(dev, "Error to get memory\n");
+ return;
+ }
+ /* Get INCR burst type, and parse it */
+ ret = device_property_read_u32_array(dev,
+ "snps,incr-burst-type-adjustment", vals, ntype);
+ if (ret) {
+ dev_err(dev, "Error to get property\n");
+ return;
+ }
+ *(dwc->incrx_type + 1) = vals[0];
+ if (ntype > 1) {
+ *dwc->incrx_type = 1;
+ for (i = 1; i < ntype; i++) {
+ if (vals[i] > *(dwc->incrx_type + 1))
+ *(dwc->incrx_type + 1) = vals[i];
+ }
+ } else
+ *dwc->incrx_type = 0;
+
+ /* Enable Undefined Length INCR Burst and Enable INCRx Burst */
+ cfg &= ~DWC3_GSBUSCFG0_INCRBRST_MASK;
+ if (*dwc->incrx_type)
+ cfg |= DWC3_GSBUSCFG0_INCRBRSTENA;
+ switch (*(dwc->incrx_type + 1)) {
+ case 256:
+ cfg |= DWC3_GSBUSCFG0_INCR256BRSTENA;
+ break;
+ case 128:
+ cfg |= DWC3_GSBUSCFG0_INCR128BRSTENA;
+ break;
+ case 64:
+ cfg |= DWC3_GSBUSCFG0_INCR64BRSTENA;
+ break;
+ case 32:
+ cfg |= DWC3_GSBUSCFG0_INCR32BRSTENA;
+ break;
+ case 16:
+ cfg |= DWC3_GSBUSCFG0_INCR16BRSTENA;
+ break;
+ case 8:
+ cfg |= DWC3_GSBUSCFG0_INCR8BRSTENA;
+ break;
+ case 4:
+ cfg |= DWC3_GSBUSCFG0_INCR4BRSTENA;
+ break;
+ case 1:
+ break;
+ default:
+ dev_err(dev, "Invalid property\n");
+ break;
+ }
+ }
+
+ /* Handle usb snooping */
+ if (dwc->dma_snooping_quirk) {
+ cfg &= ~DWC3_GSBUSCFG0_SNP_MASK;
+ cfg |= (AXI3_CACHE_TYPE_SNP << DWC3_GSBUSCFG0_DATARD_SHIFT) |
+ (AXI3_CACHE_TYPE_SNP << DWC3_GSBUSCFG0_DESCRD_SHIFT) |
+ (AXI3_CACHE_TYPE_SNP << DWC3_GSBUSCFG0_DATAWR_SHIFT) |
+ (AXI3_CACHE_TYPE_SNP << DWC3_GSBUSCFG0_DESCWR_SHIFT);
+ }
+
+ dwc3_writel(dwc->regs, DWC3_GSBUSCFG0, cfg);
+
+}
+
+
+
static void dwc3_core_exit(struct dwc3 *dwc)
{
dwc3_event_buffers_cleanup(dwc);
@@ -721,6 +834,8 @@ static int dwc3_core_init(struct dwc3 *d
if (ret)
goto err1;
+ dwc3_set_soc_bus_cfg(dwc);
+
/* Adjust Frame Length */
dwc3_frame_length_adjustment(dwc);
@@ -919,11 +1034,109 @@ static void dwc3_core_exit_mode(struct d
}
}
+static void dwc3_get_properties(struct dwc3 *dwc)
+{
+ struct device *dev = dwc->dev;
+ struct device_node *node = dev->of_node;
+ u8 lpm_nyet_threshold;
+ u8 tx_de_emphasis;
+ u8 hird_threshold;
+
+ /* default to highest possible threshold */
+ lpm_nyet_threshold = 0xff;
+
+ /* default to -3.5dB de-emphasis */
+ tx_de_emphasis = 1;
+
+ /*
+ * default to assert utmi_sleep_n and use maximum allowed HIRD
+ * threshold value of 0b1100
+ */
+ hird_threshold = 12;
+
+ dwc->maximum_speed = usb_get_maximum_speed(dev);
+ dwc->dr_mode = usb_get_dr_mode(dev);
+ dwc->hsphy_mode = of_usb_get_phy_mode(dev->of_node);
+
+ dwc->sysdev_is_parent = device_property_read_bool(dev,
+ "linux,sysdev_is_parent");
+ if (dwc->sysdev_is_parent)
+ dwc->sysdev = dwc->dev->parent;
+ else
+ dwc->sysdev = dwc->dev;
+
+ dwc->has_lpm_erratum = device_property_read_bool(dev,
+ "snps,has-lpm-erratum");
+ device_property_read_u8(dev, "snps,lpm-nyet-threshold",
+ &lpm_nyet_threshold);
+ dwc->is_utmi_l1_suspend = device_property_read_bool(dev,
+ "snps,is-utmi-l1-suspend");
+ device_property_read_u8(dev, "snps,hird-threshold",
+ &hird_threshold);
+ dwc->usb3_lpm_capable = device_property_read_bool(dev,
+ "snps,usb3_lpm_capable");
+
+ dwc->needs_fifo_resize = of_property_read_bool(node, "tx-fifo-resize");
+
+ dwc->configure_gfladj =
+ of_property_read_bool(node, "configure-gfladj");
+ dwc->dr_mode = usb_get_dr_mode(dev);
+
+ dwc->disable_scramble_quirk = device_property_read_bool(dev,
+ "snps,disable_scramble_quirk");
+ dwc->u2exit_lfps_quirk = device_property_read_bool(dev,
+ "snps,u2exit_lfps_quirk");
+ dwc->u2ss_inp3_quirk = device_property_read_bool(dev,
+ "snps,u2ss_inp3_quirk");
+ dwc->req_p1p2p3_quirk = device_property_read_bool(dev,
+ "snps,req_p1p2p3_quirk");
+ dwc->del_p1p2p3_quirk = device_property_read_bool(dev,
+ "snps,del_p1p2p3_quirk");
+ dwc->del_phy_power_chg_quirk = device_property_read_bool(dev,
+ "snps,del_phy_power_chg_quirk");
+ dwc->lfps_filter_quirk = device_property_read_bool(dev,
+ "snps,lfps_filter_quirk");
+ dwc->rx_detect_poll_quirk = device_property_read_bool(dev,
+ "snps,rx_detect_poll_quirk");
+ dwc->dis_u3_susphy_quirk = device_property_read_bool(dev,
+ "snps,dis_u3_susphy_quirk");
+ dwc->dis_u2_susphy_quirk = device_property_read_bool(dev,
+ "snps,dis_u2_susphy_quirk");
+ dwc->dis_enblslpm_quirk = device_property_read_bool(dev,
+ "snps,dis_enblslpm_quirk");
+ dwc->dis_rxdet_inp3_quirk = device_property_read_bool(dev,
+ "snps,dis_rxdet_inp3_quirk");
+ dwc->dis_u2_freeclk_exists_quirk = device_property_read_bool(dev,
+ "snps,dis-u2-freeclk-exists-quirk");
+ dwc->dis_del_phy_power_chg_quirk = device_property_read_bool(dev,
+ "snps,dis-del-phy-power-chg-quirk");
+ dwc->dma_snooping_quirk = device_property_read_bool(dev,
+ "snps,dma-snooping");
+
+ dwc->tx_de_emphasis_quirk = device_property_read_bool(dev,
+ "snps,tx_de_emphasis_quirk");
+ device_property_read_u8(dev, "snps,tx_de_emphasis",
+ &tx_de_emphasis);
+ device_property_read_string(dev, "snps,hsphy_interface",
+ &dwc->hsphy_interface);
+ device_property_read_u32(dev, "snps,quirk-frame-length-adjustment",
+ &dwc->fladj);
+
+ dwc->lpm_nyet_threshold = lpm_nyet_threshold;
+ dwc->tx_de_emphasis = tx_de_emphasis;
+
+ dwc->hird_threshold = hird_threshold
+ | (dwc->is_utmi_l1_suspend << 4);
+
+ dwc->imod_interval = 0;
+}
+
#define DWC3_ALIGN_MASK (16 - 1)
static int dwc3_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
+ struct device_node *node = dev->of_node;
struct resource *res;
struct dwc3 *dwc;
u8 lpm_nyet_threshold;
@@ -955,6 +1168,11 @@ static int dwc3_probe(struct platform_de
dwc->xhci_resources[0].flags = res->flags;
dwc->xhci_resources[0].name = res->name;
+ if (node) {
+ dwc->configure_gfladj =
+ of_property_read_bool(node, "configure-gfladj");
+ }
+
res->start += DWC3_GLOBALS_REGS_START;
/*
@@ -997,6 +1215,12 @@ static int dwc3_probe(struct platform_de
dwc->usb3_lpm_capable = device_property_read_bool(dev,
"snps,usb3_lpm_capable");
+ dwc->needs_fifo_resize = of_property_read_bool(node, "tx-fifo-resize");
+
+ dwc->configure_gfladj =
+ of_property_read_bool(node, "configure-gfladj");
+ dwc->dr_mode = of_usb_get_dr_mode(node);
+
dwc->disable_scramble_quirk = device_property_read_bool(dev,
"snps,disable_scramble_quirk");
dwc->u2exit_lfps_quirk = device_property_read_bool(dev,
@@ -1041,6 +1265,8 @@ static int dwc3_probe(struct platform_de
dwc->hird_threshold = hird_threshold
| (dwc->is_utmi_l1_suspend << 4);
+ dwc3_get_properties(dwc);
+
platform_set_drvdata(pdev, dwc);
dwc3_cache_hwparams(dwc);
@@ -1064,6 +1290,11 @@ static int dwc3_probe(struct platform_de
if (ret < 0)
goto err1;
+ /* Adjust Frame Length */
+ if (dwc->configure_gfladj)
+ dwc3_writel(dwc->regs, DWC3_GFLADJ, GFLADJ_30MHZ_REG_SEL |
+ GFLADJ_30MHZ(GFLADJ_30MHZ_DEFAULT));
+
pm_runtime_forbid(dev);
ret = dwc3_alloc_event_buffers(dwc, DWC3_EVENT_BUFFERS_SIZE);
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -26,6 +26,7 @@
#include <linux/dma-mapping.h>
#include <linux/mm.h>
#include <linux/debugfs.h>
+#include <linux/of_address.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
@@ -154,6 +155,32 @@
/* Bit fields */
+/* Global SoC Bus Configuration Register 0 */
+#define AXI3_CACHE_TYPE_AW 0x8 /* write allocate */
+#define AXI3_CACHE_TYPE_AR 0x4 /* read allocate */
+#define AXI3_CACHE_TYPE_SNP 0x2 /* cacheable */
+#define AXI3_CACHE_TYPE_BUF 0x1 /* bufferable */
+#define DWC3_GSBUSCFG0_DATARD_SHIFT 28
+#define DWC3_GSBUSCFG0_DESCRD_SHIFT 24
+#define DWC3_GSBUSCFG0_DATAWR_SHIFT 20
+#define DWC3_GSBUSCFG0_DESCWR_SHIFT 16
+#define DWC3_GSBUSCFG0_SNP_MASK 0xffff0000
+#define DWC3_GSBUSCFG0_DATABIGEND (1 << 11)
+#define DWC3_GSBUSCFG0_DESCBIGEND (1 << 10)
+#define DWC3_GSBUSCFG0_INCR256BRSTENA (1 << 7) /* INCR256 burst */
+#define DWC3_GSBUSCFG0_INCR128BRSTENA (1 << 6) /* INCR128 burst */
+#define DWC3_GSBUSCFG0_INCR64BRSTENA (1 << 5) /* INCR64 burst */
+#define DWC3_GSBUSCFG0_INCR32BRSTENA (1 << 4) /* INCR32 burst */
+#define DWC3_GSBUSCFG0_INCR16BRSTENA (1 << 3) /* INCR16 burst */
+#define DWC3_GSBUSCFG0_INCR8BRSTENA (1 << 2) /* INCR8 burst */
+#define DWC3_GSBUSCFG0_INCR4BRSTENA (1 << 1) /* INCR4 burst */
+#define DWC3_GSBUSCFG0_INCRBRSTENA (1 << 0) /* undefined length enable */
+#define DWC3_GSBUSCFG0_INCRBRST_MASK 0xff
+
+/* Global SoC Bus Configuration Register 1 */
+#define DWC3_GSBUSCFG1_1KPAGEENA (1 << 12) /* 1K page boundary enable */
+#define DWC3_GSBUSCFG1_PTRANSLIMIT_MASK 0xf00
+
/* Global Debug Queue/FIFO Space Available Register */
#define DWC3_GDBGFIFOSPACE_NUM(n) ((n) & 0x1f)
#define DWC3_GDBGFIFOSPACE_TYPE(n) (((n) << 5) & 0x1e0)
@@ -180,7 +207,6 @@
#define DWC3_GCTL_CLK_PIPE (1)
#define DWC3_GCTL_CLK_PIPEHALF (2)
#define DWC3_GCTL_CLK_MASK (3)
-
#define DWC3_GCTL_PRTCAP(n) (((n) & (3 << 12)) >> 12)
#define DWC3_GCTL_PRTCAPDIR(n) ((n) << 12)
#define DWC3_GCTL_PRTCAP_HOST 1
@@ -289,6 +315,10 @@
/* Global Frame Length Adjustment Register */
#define DWC3_GFLADJ_30MHZ_SDBND_SEL (1 << 7)
#define DWC3_GFLADJ_30MHZ_MASK 0x3f
+#define GFLADJ_30MHZ_REG_SEL (1 << 7)
+#define GFLADJ_30MHZ(n) ((n) & 0x3f)
+#define GFLADJ_30MHZ_DEFAULT 0x20
+
/* Global User Control Register 2 */
#define DWC3_GUCTL2_RST_ACTBITLATER (1 << 14)
@@ -753,6 +783,7 @@ struct dwc3_scratchpad_array {
* @regs: base address for our registers
* @regs_size: address space size
* @fladj: frame length adjustment
+ * @incrx_type: INCR burst type adjustment
* @irq_gadget: peripheral controller's IRQ number
* @nr_scratch: number of scratch buffers
* @u1u2: only used on revisions <1.83a for workaround
@@ -847,6 +878,7 @@ struct dwc3 {
spinlock_t lock;
struct device *dev;
+ struct device *sysdev;
struct platform_device *xhci;
struct resource xhci_resources[DWC3_XHCI_RESOURCES_NUM];
@@ -872,6 +904,12 @@ struct dwc3 {
enum usb_phy_interface hsphy_mode;
u32 fladj;
+ /*
+ * For INCR burst type.
+ * First field: for undefined length INCR burst type enable.
+ * Second field: for INCRx burst type enable
+ */
+ u32 incrx_type[2];
u32 irq_gadget;
u32 nr_scratch;
u32 u1u2;
@@ -948,9 +986,12 @@ struct dwc3 {
unsigned ep0_bounced:1;
unsigned ep0_expect_in:1;
unsigned has_hibernation:1;
+ unsigned sysdev_is_parent:1;
unsigned has_lpm_erratum:1;
unsigned is_utmi_l1_suspend:1;
unsigned is_fpga:1;
+ unsigned needs_fifo_resize:1;
+ unsigned configure_gfladj:1;
unsigned pending_events:1;
unsigned pullups_connected:1;
unsigned setup_packet_pending:1;
@@ -971,9 +1012,12 @@ struct dwc3 {
unsigned dis_rxdet_inp3_quirk:1;
unsigned dis_u2_freeclk_exists_quirk:1;
unsigned dis_del_phy_power_chg_quirk:1;
+ unsigned dma_snooping_quirk:1;
unsigned tx_de_emphasis_quirk:1;
unsigned tx_de_emphasis:2;
+
+ u16 imod_interval;
};
/* -------------------------------------------------------------------------- */
--- a/drivers/usb/dwc3/host.c
+++ b/drivers/usb/dwc3/host.c
@@ -17,6 +17,8 @@
#include <linux/platform_device.h>
+#include <linux/of_device.h>
+
#include "core.h"
int dwc3_host_init(struct dwc3 *dwc)
@@ -73,12 +75,21 @@ int dwc3_host_init(struct dwc3 *dwc)
return -ENOMEM;
}
- dma_set_coherent_mask(&xhci->dev, dwc->dev->coherent_dma_mask);
+ if (IS_ENABLED(CONFIG_OF) && dwc->dev->of_node)
+ of_dma_configure(&xhci->dev, dwc->dev->of_node);
+ else
+ dma_set_coherent_mask(&xhci->dev, dwc->dev->coherent_dma_mask);
- xhci->dev.parent = dwc->dev;
+ xhci->dev.parent = dwc->dev;
xhci->dev.dma_mask = dwc->dev->dma_mask;
xhci->dev.dma_parms = dwc->dev->dma_parms;
+ /* set DMA operations */
+ if (dwc->dev->of_node && of_dma_is_coherent(dwc->dev->of_node)) {
+ xhci->dev.archdata.dma_ops = dwc->dev->archdata.dma_ops;
+ dev_dbg(dwc->dev, "set dma_ops for usb\n");
+ }
+
dwc->xhci = xhci;
ret = platform_device_add_resources(xhci, dwc->xhci_resources,
--- a/drivers/usb/gadget/udc/fsl_udc_core.c
+++ b/drivers/usb/gadget/udc/fsl_udc_core.c
@@ -198,7 +198,11 @@ __acquires(ep->udc->lock)
spin_unlock(&ep->udc->lock);
- usb_gadget_giveback_request(&ep->ep, &req->req);
+ /* this complete() should a func implemented by gadget layer,
+ * eg fsg->bulk_in_complete()
+ */
+ if (req->req.complete)
+ usb_gadget_giveback_request(&ep->ep, &req->req);
spin_lock(&ep->udc->lock);
ep->stopped = stopped;
@@ -245,10 +249,10 @@ static int dr_controller_setup(struct fs
if (udc->pdata->have_sysif_regs) {
if (udc->pdata->controller_ver) {
/* controller version 1.6 or above */
- ctrl = __raw_readl(&usb_sys_regs->control);
+ ctrl = ioread32be(&usb_sys_regs->control);
ctrl &= ~USB_CTRL_UTMI_PHY_EN;
ctrl |= USB_CTRL_USB_EN;
- __raw_writel(ctrl, &usb_sys_regs->control);
+ iowrite32be(ctrl, &usb_sys_regs->control);
}
}
portctrl |= PORTSCX_PTS_ULPI;
@@ -257,13 +261,14 @@ static int dr_controller_setup(struct fs
portctrl |= PORTSCX_PTW_16BIT;
/* fall through */
case FSL_USB2_PHY_UTMI:
+ case FSL_USB2_PHY_UTMI_DUAL:
if (udc->pdata->have_sysif_regs) {
if (udc->pdata->controller_ver) {
/* controller version 1.6 or above */
- ctrl = __raw_readl(&usb_sys_regs->control);
+ ctrl = ioread32be(&usb_sys_regs->control);
ctrl |= (USB_CTRL_UTMI_PHY_EN |
USB_CTRL_USB_EN);
- __raw_writel(ctrl, &usb_sys_regs->control);
+ iowrite32be(ctrl, &usb_sys_regs->control);
mdelay(FSL_UTMI_PHY_DLY); /* Delay for UTMI
PHY CLK to become stable - 10ms*/
}
@@ -329,22 +334,22 @@ static int dr_controller_setup(struct fs
/* Config control enable i/o output, cpu endian register */
#ifndef CONFIG_ARCH_MXC
if (udc->pdata->have_sysif_regs) {
- ctrl = __raw_readl(&usb_sys_regs->control);
+ ctrl = ioread32be(&usb_sys_regs->control);
ctrl |= USB_CTRL_IOENB;
- __raw_writel(ctrl, &usb_sys_regs->control);
+ iowrite32be(ctrl, &usb_sys_regs->control);
}
#endif
-#if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE)
+#if !defined(CONFIG_NOT_COHERENT_CACHE)
/* Turn on cache snooping hardware, since some PowerPC platforms
* wholly rely on hardware to deal with cache coherent. */
if (udc->pdata->have_sysif_regs) {
/* Setup Snooping for all the 4GB space */
tmp = SNOOP_SIZE_2GB; /* starts from 0x0, size 2G */
- __raw_writel(tmp, &usb_sys_regs->snoop1);
+ iowrite32be(tmp, &usb_sys_regs->snoop1);
tmp |= 0x80000000; /* starts from 0x8000000, size 2G */
- __raw_writel(tmp, &usb_sys_regs->snoop2);
+ iowrite32be(tmp, &usb_sys_regs->snoop2);
}
#endif
@@ -1057,7 +1062,7 @@ static int fsl_ep_fifo_status(struct usb
struct ep_queue_head *qh;
ep = container_of(_ep, struct fsl_ep, ep);
- if (!_ep || (!ep->ep.desc && ep_index(ep) != 0))
+ if (!_ep || !ep->ep.desc || (ep_index(ep) == 0))
return -ENODEV;
udc = (struct fsl_udc *)ep->udc;
@@ -1599,14 +1604,13 @@ static int process_ep_req(struct fsl_udc
struct fsl_req *curr_req)
{
struct ep_td_struct *curr_td;
- int td_complete, actual, remaining_length, j, tmp;
+ int actual, remaining_length, j, tmp;
int status = 0;
int errors = 0;
struct ep_queue_head *curr_qh = &udc->ep_qh[pipe];
int direction = pipe % 2;
curr_td = curr_req->head;
- td_complete = 0;
actual = curr_req->req.length;
for (j = 0; j < curr_req->dtd_count; j++) {
@@ -1651,11 +1655,9 @@ static int process_ep_req(struct fsl_udc
status = -EPROTO;
break;
} else {
- td_complete++;
break;
}
} else {
- td_complete++;
VDBG("dTD transmitted successful");
}
@@ -1698,7 +1700,7 @@ static void dtd_complete_irq(struct fsl_
curr_ep = get_ep_by_pipe(udc, i);
/* If the ep is configured */
- if (curr_ep->name == NULL) {
+ if (strncmp(curr_ep->name, "ep", 2)) {
WARNING("Invalid EP?");
continue;
}
@@ -2420,10 +2422,12 @@ static int fsl_udc_probe(struct platform
usb_sys_regs = (void *)dr_regs + USB_DR_SYS_OFFSET;
#endif
+#ifdef CONFIG_ARCH_MXC
/* Initialize USB clocks */
ret = fsl_udc_clk_init(pdev);
if (ret < 0)
goto err_iounmap_noclk;
+#endif
/* Read Device Controller Capability Parameters register */
dccparams = fsl_readl(&dr_regs->dccparams);
@@ -2463,9 +2467,11 @@ static int fsl_udc_probe(struct platform
dr_controller_setup(udc_controller);
}
+#ifdef CONFIG_ARCH_MXC
ret = fsl_udc_clk_finalize(pdev);
if (ret)
goto err_free_irq;
+#endif
/* Setup gadget structure */
udc_controller->gadget.ops = &fsl_gadget_ops;
@@ -2478,6 +2484,7 @@ static int fsl_udc_probe(struct platform
/* Setup gadget.dev and register with kernel */
dev_set_name(&udc_controller->gadget.dev, "gadget");
udc_controller->gadget.dev.of_node = pdev->dev.of_node;
+ set_dma_ops(&udc_controller->gadget.dev, pdev->dev.archdata.dma_ops);
if (!IS_ERR_OR_NULL(udc_controller->transceiver))
udc_controller->gadget.is_otg = 1;
@@ -2529,7 +2536,9 @@ err_free_irq:
err_iounmap:
if (pdata->exit)
pdata->exit(pdev);
+#ifdef CONFIG_ARCH_MXC
fsl_udc_clk_release();
+#endif
err_iounmap_noclk:
iounmap(dr_regs);
err_release_mem_region:
@@ -2557,8 +2566,9 @@ static int fsl_udc_remove(struct platfor
udc_controller->done = &done;
usb_del_gadget_udc(&udc_controller->gadget);
+#ifdef CONFIG_ARCH_MXC
fsl_udc_clk_release();
-
+#endif
/* DR has been stopped in usb_gadget_unregister_driver() */
remove_proc_file();
@@ -2570,7 +2580,7 @@ static int fsl_udc_remove(struct platfor
dma_pool_destroy(udc_controller->td_pool);
free_irq(udc_controller->irq, udc_controller);
iounmap(dr_regs);
- if (pdata->operating_mode == FSL_USB2_DR_DEVICE)
+ if (res && (pdata->operating_mode == FSL_USB2_DR_DEVICE))
release_mem_region(res->start, resource_size(res));
/* free udc --wait for the release() finished */
--- a/drivers/usb/gadget/udc/fsl_usb2_udc.h
+++ b/drivers/usb/gadget/udc/fsl_usb2_udc.h
@@ -20,6 +20,10 @@
#define USB_MAX_CTRL_PAYLOAD 64
#define USB_DR_SYS_OFFSET 0x400
+#ifdef CONFIG_SOC_LS1021A
+#undef CONFIG_ARCH_MXC
+#endif
+
/* USB DR device mode registers (Little Endian) */
struct usb_dr_device {
/* Capability register */
@@ -597,18 +601,6 @@ struct platform_device;
int fsl_udc_clk_init(struct platform_device *pdev);
int fsl_udc_clk_finalize(struct platform_device *pdev);
void fsl_udc_clk_release(void);
-#else
-static inline int fsl_udc_clk_init(struct platform_device *pdev)
-{
- return 0;
-}
-static inline int fsl_udc_clk_finalize(struct platform_device *pdev)
-{
- return 0;
-}
-static inline void fsl_udc_clk_release(void)
-{
-}
#endif
#endif
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -165,7 +165,7 @@ config XPS_USB_HCD_XILINX
config USB_EHCI_FSL
tristate "Support for Freescale PPC on-chip EHCI USB controller"
- depends on FSL_SOC
+ depends on USB_EHCI_HCD
select USB_EHCI_ROOT_HUB_TT
---help---
Variation of ARC USB block used in some Freescale chips.
--- a/drivers/usb/host/ehci-fsl.c
+++ b/drivers/usb/host/ehci-fsl.c
@@ -37,13 +37,141 @@
#include <linux/fsl_devices.h>
#include <linux/of_platform.h>
+#ifdef CONFIG_PPC
+#include <asm/fsl_pm.h>
+#include <linux/suspend.h>
+#endif
+
#include "ehci.h"
#include "ehci-fsl.h"
+#define FSL_USB_PHY_ADDR 0xffe214000
+
+struct ccsr_usb_port_ctrl {
+ u32 ctrl;
+ u32 drvvbuscfg;
+ u32 pwrfltcfg;
+ u32 sts;
+ u8 res_14[0xc];
+ u32 bistcfg;
+ u32 biststs;
+ u32 abistcfg;
+ u32 abiststs;
+ u8 res_30[0x10];
+ u32 xcvrprg;
+ u32 anaprg;
+ u32 anadrv;
+ u32 anasts;
+};
+
+struct ccsr_usb_phy {
+ u32 id;
+ struct ccsr_usb_port_ctrl port1;
+ u8 res_50[0xc];
+ u32 tvr;
+ u32 pllprg[4];
+ u8 res_70[0x4];
+ u32 anaccfg;
+ u32 dbg;
+ u8 res_7c[0x4];
+ struct ccsr_usb_port_ctrl port2;
+ u8 res_dc[0x334];
+};
+
#define DRIVER_DESC "Freescale EHCI Host controller driver"
#define DRV_NAME "ehci-fsl"
static struct hc_driver __read_mostly fsl_ehci_hc_driver;
+struct ehci_fsl {
+ /* store current hcd state for otg;
+ * have_hcd is true when host drv al already part of otg framework,
+ * otherwise false;
+ * hcd_add is true when otg framework wants to add host
+ * drv as part of otg;flase when it wants to remove it
+ */
+unsigned have_hcd:1;
+unsigned hcd_add:1;
+};
+
+static struct ehci_fsl *hcd_to_ehci_fsl(struct usb_hcd *hcd)
+{
+struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+
+return container_of(ehci, struct ehci_fsl, ehci);
+}
+
+#if defined(CONFIG_FSL_USB2_OTG) || defined(CONFIG_FSL_USB2_OTG_MODULE)
+static void do_change_hcd(struct work_struct *work)
+{
+struct ehci_hcd *ehci = container_of(work, struct ehci_hcd,
+ change_hcd_work);
+struct usb_hcd *hcd = ehci_to_hcd(ehci);
+struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
+void __iomem *non_ehci = hcd->regs;
+int retval;
+
+ if (ehci_fsl->hcd_add && !ehci_fsl->have_hcd) {
+ writel(USBMODE_CM_HOST, non_ehci + FSL_SOC_USB_USBMODE);
+ /* host, gadget and otg share same int line */
+ retval = usb_add_hcd(hcd, hcd->irq, IRQF_SHARED);
+ if (retval == 0)
+ ehci_fsl->have_hcd = 1;
+ } else if (!ehci_fsl->hcd_add && ehci_fsl->have_hcd) {
+ usb_remove_hcd(hcd);
+ ehci_fsl->have_hcd = 0;
+ }
+}
+#endif
+
+struct ehci_fsl {
+ struct ehci_hcd ehci;
+
+#ifdef CONFIG_PM
+struct ehci_regs saved_regs;
+struct ccsr_usb_phy saved_phy_regs;
+/* Saved USB PHY settings, need to restore after deep sleep. */
+u32 usb_ctrl;
+#endif
+ /*
+ * store current hcd state for otg;
+ * have_hcd is true when host drv al already part of otg framework,
+ * otherwise false;
+ * hcd_add is true when otg framework wants to add host
+ * drv as part of otg;flase when it wants to remove it
+ */
+unsigned have_hcd:1;
+unsigned hcd_add:1;
+};
+
+static strut ehci_fsl *hcd_to_ehci_fsl(struct usb_hcd *hcd)
+{
+struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+
+return container_of(ehci, struct ehci_fsl, ehci);
+}
+
+#if defined(CONFIG_FSL_USB2_OTG) || defined(CONFIG_FSL_USB2_OTG_MODULE)
+static void do_change_hcd(struct work_struct *work)
+{
+struct ehci_hcd *ehci = container_of(work, struct ehci_hcd,
+change_hcd_work);
+struct usb_hcd *hcd = ehci_to_hcd(ehci);
+struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
+void __iomem *non_ehci = hcd->regs;
+int retval;
+
+if (ehci_fsl->hcd_add && !ehci_fsl->have_hcd) {
+writel(USBMODE_CM_HOST, non_ehci + FSL_SOC_USB_USBMODE);
+/* host, gadget and otg share same int line */
+retval = usb_add_hcd(hcd, hcd->irq, IRQF_SHARED);
+if (retval == 0)
+ehci_fsl->have_hcd = 1;
+} else if (!ehci_fsl->hcd_add && ehci_fsl->have_hcd) {
+ usb_remove_hcd(hcd);
+ehci_fsl->have_hcd = 0;
+}
+}
+#endif
/* configure so an HC device and id are always provided */
/* always called with process context; sleeping is OK */
@@ -131,6 +259,12 @@ static int fsl_ehci_drv_probe(struct pla
clrsetbits_be32(hcd->regs + FSL_SOC_USB_CTRL,
CONTROL_REGISTER_W1C_MASK, 0x4);
+ /* Set USB_EN bit to select ULPI phy for USB controller version 2.5 */
+ if (pdata->controller_ver == FSL_USB_VER_2_5 &&
+ pdata->phy_mode == FSL_USB2_PHY_ULPI)
+ iowrite32be(USB_CTRL_USB_EN, hcd->regs + FSL_SOC_USB_CTRL);
+
+
/*
* Enable UTMI phy and program PTS field in UTMI mode before asserting
* controller reset for USB Controller version 2.5
@@ -143,16 +277,20 @@ static int fsl_ehci_drv_probe(struct pla
/* Don't need to set host mode here. It will be done by tdi_reset() */
- retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
+ retval = usb_add_hcd(hcd, irq, IRQF_SHARED | IRQF_NO_SUSPEND);
if (retval != 0)
goto err2;
device_wakeup_enable(hcd->self.controller);
-#ifdef CONFIG_USB_OTG
+#if defined(CONFIG_FSL_USB2_OTG) || defined(CONFIG_FSL_USB2_OTG_MODULE)
if (pdata->operating_mode == FSL_USB2_DR_OTG) {
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+ struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
hcd->usb_phy = usb_get_phy(USB_PHY_TYPE_USB2);
+
+ INIT_WORK(&ehci->change_hcd_work, do_change_hcd);
+
dev_dbg(&pdev->dev, "hcd=0x%p ehci=0x%p, phy=0x%p\n",
hcd, ehci, hcd->usb_phy);
@@ -168,6 +306,11 @@ static int fsl_ehci_drv_probe(struct pla
retval = -ENODEV;
goto err2;
}
+
+ ehci_fsl->have_hcd = 1;
+ } else {
+ dev_err(&pdev->dev, "wrong operating mode\n");
+ return -ENODEV;
}
#endif
return retval;
@@ -181,6 +324,18 @@ static int fsl_ehci_drv_probe(struct pla
return retval;
}
+static bool usb_phy_clk_valid(struct usb_hcd *hcd,
+ enum fsl_usb2_phy_modes phy_mode)
+{
+ void __iomem *non_ehci = hcd->regs;
+ bool ret = true;
+
+ if (!(in_be32(non_ehci + FSL_SOC_USB_CTRL) & PHY_CLK_VALID))
+ ret = false;
+
+ return ret;
+}
+
static int ehci_fsl_setup_phy(struct usb_hcd *hcd,
enum fsl_usb2_phy_modes phy_mode,
unsigned int port_offset)
@@ -219,6 +374,21 @@ static int ehci_fsl_setup_phy(struct usb
/* fall through */
case FSL_USB2_PHY_UTMI:
case FSL_USB2_PHY_UTMI_DUAL:
+ if (pdata->has_fsl_erratum_a006918) {
+ pr_warn("fsl-ehci: USB PHY clock invalid\n");
+ return -EINVAL;
+ }
+
+ /* PHY_CLK_VALID bit is de-featured from all controller
+ * versions below 2.4 and is to be checked only for
+ * internal UTMI phy
+ */
+ if (pdata->controller_ver > FSL_USB_VER_2_4 &&
+ pdata->have_sysif_regs && !usb_phy_clk_valid(hcd)) {
+ pr_err("fsl-ehci: USB PHY clock invalid\n");
+ return -EINVAL;
+ }
+
if (pdata->have_sysif_regs && pdata->controller_ver) {
/* controller version 1.6 or above */
clrsetbits_be32(non_ehci + FSL_SOC_USB_CTRL,
@@ -292,14 +462,9 @@ static int ehci_fsl_usb_setup(struct ehc
return -EINVAL;
if (pdata->operating_mode == FSL_USB2_MPH_HOST) {
- unsigned int chip, rev, svr;
-
- svr = mfspr(SPRN_SVR);
- chip = svr >> 16;
- rev = (svr >> 4) & 0xf;
/* Deal with USB Erratum #14 on MPC834x Rev 1.0 & 1.1 chips */
- if ((rev == 1) && (chip >= 0x8050) && (chip <= 0x8055))
+ if (pdata->has_fsl_erratum_14 == 1)
ehci->has_fsl_port_bug = 1;
if (pdata->port_enables & FSL_USB2_PORT0_ENABLED)
@@ -379,16 +544,57 @@ static int ehci_fsl_setup(struct usb_hcd
return retval;
}
-struct ehci_fsl {
- struct ehci_hcd ehci;
#ifdef CONFIG_PM
- /* Saved USB PHY settings, need to restore after deep sleep. */
- u32 usb_ctrl;
-#endif
-};
+void __iomem *phy_reg;
-#ifdef CONFIG_PM
+#ifdef CONFIG_PPC
+/* save usb registers */
+static int ehci_fsl_save_context(struct usb_hcd *hcd)
+{
+ struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+ void __iomem *non_ehci = hcd->regs;
+ struct device *dev = hcd->self.controller;
+ struct fsl_usb2_platform_data *pdata = dev_get_platdata(dev);
+
+ if (pdata->phy_mode == FSL_USB2_PHY_UTMI_DUAL) {
+ phy_reg = ioremap(FSL_USB_PHY_ADDR,
+ sizeof(struct ccsr_usb_phy));
+ _memcpy_fromio((void *)&ehci_fsl->saved_phy_regs, phy_reg,
+ sizeof(struct ccsr_usb_phy));
+ }
+
+ _memcpy_fromio((void *)&ehci_fsl->saved_regs, ehci->regs,
+ sizeof(struct ehci_regs));
+ ehci_fsl->usb_ctrl = ioread32be(non_ehci + FSL_SOC_USB_CTRL);
+
+ return 0;
+}
+
+/*Restore usb registers */
+static int ehci_fsl_restore_context(struct usb_hcd *hcd)
+{
+ struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+ void __iomem *non_ehci = hcd->regs;
+ struct device *dev = hcd->self.controller;
+ struct fsl_usb2_platform_data *pdata = dev_get_platdata(dev);
+
+ if (pdata->phy_mode == FSL_USB2_PHY_UTMI_DUAL) {
+ if (phy_reg)
+ _memcpy_toio(phy_reg,
+ (void *)&ehci_fsl->saved_phy_regs,
+ sizeof(struct ccsr_usb_phy));
+ }
+
+ _memcpy_toio(ehci->regs, (void *)&ehci_fsl->saved_regs,
+ sizeof(struct ehci_regs));
+ iowrite32be(ehci_fsl->usb_ctrl, non_ehci + FSL_SOC_USB_CTRL);
+
+ return 0;
+}
+#endif
#ifdef CONFIG_PPC_MPC512x
static int ehci_fsl_mpc512x_drv_suspend(struct device *dev)
@@ -535,26 +741,43 @@ static inline int ehci_fsl_mpc512x_drv_r
}
#endif /* CONFIG_PPC_MPC512x */
-static struct ehci_fsl *hcd_to_ehci_fsl(struct usb_hcd *hcd)
-{
- struct ehci_hcd *ehci = hcd_to_ehci(hcd);
-
- return container_of(ehci, struct ehci_fsl, ehci);
-}
-
static int ehci_fsl_drv_suspend(struct device *dev)
{
struct usb_hcd *hcd = dev_get_drvdata(dev);
struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
void __iomem *non_ehci = hcd->regs;
+#if defined(CONFIG_FSL_USB2_OTG) || defined(CONFIG_FSL_USB2_OTG_MODULE)
+ struct usb_bus host = hcd->self;
+#endif
+
+#ifdef CONFIG_PPC
+suspend_state_t pm_state;
+pm_state = pm_suspend_state();
+
+if (pm_state == PM_SUSPEND_MEM)
+ ehci_fsl_save_context(hcd);
+#endif
if (of_device_is_compatible(dev->parent->of_node,
"fsl,mpc5121-usb2-dr")) {
return ehci_fsl_mpc512x_drv_suspend(dev);
}
+#if defined(CONFIG_FSL_USB2_OTG) || defined(CONFIG_FSL_USB2_OTG_MODULE)
+ if (host.is_otg) {
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+
+ /* remove hcd */
+ ehci_fsl->hcd_add = 0;
+ schedule_work(&ehci->change_hcd_work);
+ host.is_otg = 0;
+ return 0;
+ }
+#endif
+
ehci_prepare_ports_for_controller_suspend(hcd_to_ehci(hcd),
device_may_wakeup(dev));
+
if (!fsl_deep_sleep())
return 0;
@@ -568,12 +791,34 @@ static int ehci_fsl_drv_resume(struct de
struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
void __iomem *non_ehci = hcd->regs;
+#if defined(CONFIG_FSL_USB2_OTG) || defined(CONFIG_FSL_USB2_OTG_MODULE)
+ struct usb_bus host = hcd->self;
+#endif
+
+#ifdef CONFIG_PPC
+suspend_state_t pm_state;
+pm_state = pm_suspend_state();
+
+if (pm_state == PM_SUSPEND_MEM)
+ ehci_fsl_restore_context(hcd);
+#endif
if (of_device_is_compatible(dev->parent->of_node,
"fsl,mpc5121-usb2-dr")) {
return ehci_fsl_mpc512x_drv_resume(dev);
}
+#if defined(CONFIG_FSL_USB2_OTG) || defined(CONFIG_FSL_USB2_OTG_MODULE)
+ if (host.is_otg) {
+ /* add hcd */
+ ehci_fsl->hcd_add = 1;
+ schedule_work(&ehci->change_hcd_work);
+ usb_hcd_resume_root_hub(hcd);
+ host.is_otg = 0;
+ return 0;
+ }
+#endif
+
ehci_prepare_ports_for_controller_resume(ehci);
if (!fsl_deep_sleep())
return 0;
--- a/drivers/usb/host/ehci-fsl.h
+++ b/drivers/usb/host/ehci-fsl.h
@@ -63,4 +63,7 @@
#define UTMI_PHY_EN (1<<9)
#define ULPI_PHY_CLK_SEL (1<<10)
#define PHY_CLK_VALID (1<<17)
+
+/* Retry count for checking UTMI PHY CLK validity */
+#define UTMI_PHY_CLK_VALID_CHK_RETRY 5
#endif /* _EHCI_FSL_H */
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -305,6 +305,8 @@ static int ehci_bus_suspend (struct usb_
USB_PORT_STAT_HIGH_SPEED)
fs_idle_delay = true;
ehci_writel(ehci, t2, reg);
+ if (ehci_has_fsl_susp_errata(ehci))
+ usleep_range(10000, 20000);
changed = 1;
}
}
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -180,6 +180,9 @@ struct ehci_hcd { /* one per controlle
unsigned periodic_count; /* periodic activity count */
unsigned uframe_periodic_max; /* max periodic time per uframe */
+#if defined(CONFIG_FSL_USB2_OTG) || defined(CONFIG_FSL_USB2_OTG_MODULE)
+ struct work_struct change_hcd_work;
+#endif
/* list of itds & sitds completed while now_frame was still active */
struct list_head cached_itd_list;
@@ -706,8 +709,10 @@ ehci_port_speed(struct ehci_hcd *ehci, u
* incoming packets get corrupted in HS mode
*/
#define ehci_has_fsl_hs_errata(e) ((e)->has_fsl_hs_errata)
+#define ehci_has_fsl_susp_errata(e) ((e)->has_fsl_susp_errata)
#else
#define ehci_has_fsl_hs_errata(e) (0)
+#define ehci_has_fsl_susp_errata(e) (0)
#endif
/*
--- a/drivers/usb/host/fsl-mph-dr-of.c
+++ b/drivers/usb/host/fsl-mph-dr-of.c
@@ -226,6 +226,18 @@ static int fsl_usb2_mph_dr_of_probe(stru
of_property_read_bool(np, "fsl,usb-erratum-a007792");
pdata->has_fsl_erratum_a005275 =
of_property_read_bool(np, "fsl,usb-erratum-a005275");
+ pdata->has_fsl_erratum_a005697 =
+ of_property_read_bool(np, "fsl,usb_erratum-a005697");
+ if (of_get_property(np, "fsl,erratum_a006918", NULL))
+ pdata->has_fsl_erratum_a006918 = 1;
+ else
+ pdata->has_fsl_erratum_a006918 = 0;
+
+ if (of_get_property(np, "fsl,usb_erratum_14", NULL))
+ pdata->has_fsl_erratum_14 = 1;
+ else
+ pdata->has_fsl_erratum_14 = 0;
+
/*
* Determine whether phy_clk_valid needs to be checked
--- a/drivers/usb/phy/phy-fsl-usb.c
+++ b/drivers/usb/phy/phy-fsl-usb.c
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2007,2008 Freescale semiconductor, Inc.
+ * Copyright 2007,2008 Freescale Semiconductor, Inc.
*
* Author: Li Yang <LeoLi@freescale.com>
* Jerry Huang <Chang-Ming.Huang@freescale.com>
@@ -463,6 +463,7 @@ void otg_reset_controller(void)
int fsl_otg_start_host(struct otg_fsm *fsm, int on)
{
struct usb_otg *otg = fsm->otg;
+ struct usb_bus *host = otg->host;
struct device *dev;
struct fsl_otg *otg_dev =
container_of(otg->usb_phy, struct fsl_otg, phy);
@@ -486,6 +487,7 @@ int fsl_otg_start_host(struct otg_fsm *f
otg_reset_controller();
VDBG("host on......\n");
if (dev->driver->pm && dev->driver->pm->resume) {
+ host->is_otg = 1;
retval = dev->driver->pm->resume(dev);
if (fsm->id) {
/* default-b */
@@ -510,8 +512,11 @@ int fsl_otg_start_host(struct otg_fsm *f
else {
VDBG("host off......\n");
if (dev && dev->driver) {
- if (dev->driver->pm && dev->driver->pm->suspend)
+ if (dev->driver->pm &&
+ dev->driver->pm->suspend) {
+ host->is_otg = 1;
retval = dev->driver->pm->suspend(dev);
+ }
if (fsm->id)
/* default-b */
fsl_otg_drv_vbus(fsm, 0);
@@ -539,8 +544,17 @@ int fsl_otg_start_gadget(struct otg_fsm
dev = otg->gadget->dev.parent;
if (on) {
- if (dev->driver->resume)
+ /* Delay gadget resume to synchronize between host and gadget
+ * drivers. Upon role-reversal host drv is shutdown by kernel
+ * worker thread. By the time host drv shuts down, controller
+ * gets programmed for gadget role. Shutting host drv after
+ * this results in controller getting reset, and it stops
+ * responding to otg events
+ */
+ if (dev->driver->resume) {
+ msleep(1000);
dev->driver->resume(dev);
+ }
} else {
if (dev->driver->suspend)
dev->driver->suspend(dev, otg_suspend_state);
@@ -672,6 +686,10 @@ static void fsl_otg_event(struct work_st
fsl_otg_start_host(fsm, 0);
otg_drv_vbus(fsm, 0);
fsl_otg_start_gadget(fsm, 1);
+ } else {
+ fsl_otg_start_gadget(fsm, 0);
+ otg_drv_vbus(fsm, 1);
+ fsl_otg_start_host(fsm, 1);
}
}
@@ -724,6 +742,7 @@ irqreturn_t fsl_otg_isr(int irq, void *d
{
struct otg_fsm *fsm = &((struct fsl_otg *)dev_id)->fsm;
struct usb_otg *otg = ((struct fsl_otg *)dev_id)->phy.otg;
+ struct fsl_otg *otg_dev = dev_id;
u32 otg_int_src, otg_sc;
otg_sc = fsl_readl(&usb_dr_regs->otgsc);
@@ -753,18 +772,8 @@ irqreturn_t fsl_otg_isr(int irq, void *d
otg->gadget->is_a_peripheral = !fsm->id;
VDBG("ID int (ID is %d)\n", fsm->id);
- if (fsm->id) { /* switch to gadget */
- schedule_delayed_work(
- &((struct fsl_otg *)dev_id)->otg_event,
- 100);
- } else { /* switch to host */
- cancel_delayed_work(&
- ((struct fsl_otg *)dev_id)->
- otg_event);
- fsl_otg_start_gadget(fsm, 0);
- otg_drv_vbus(fsm, 1);
- fsl_otg_start_host(fsm, 1);
- }
+ schedule_delayed_work(&otg_dev->otg_event, 100);
+
return IRQ_HANDLED;
}
}
@@ -923,12 +932,32 @@ int usb_otg_start(struct platform_device
temp &= ~(PORTSC_PHY_TYPE_SEL | PORTSC_PTW);
switch (pdata->phy_mode) {
case FSL_USB2_PHY_ULPI:
+ if (pdata->controller_ver) {
+ /* controller version 1.6 or above */
+ setbits32(&p_otg->dr_mem_map->control,
+ USB_CTRL_ULPI_PHY_CLK_SEL);
+ /*
+ * Due to controller issue of PHY_CLK_VALID in ULPI
+ * mode, we set USB_CTRL_USB_EN before checking
+ * PHY_CLK_VALID, otherwise PHY_CLK_VALID doesn't work.
+ */
+ clrsetbits_be32(&p_otg->dr_mem_map->control,
+ USB_CTRL_UTMI_PHY_EN, USB_CTRL_IOENB);
+ }
temp |= PORTSC_PTS_ULPI;
break;
case FSL_USB2_PHY_UTMI_WIDE:
temp |= PORTSC_PTW_16BIT;
/* fall through */
case FSL_USB2_PHY_UTMI:
+ if (pdata->controller_ver) {
+ /* controller version 1.6 or above */
+ setbits32(&p_otg->dr_mem_map->control,
+ USB_CTRL_UTMI_PHY_EN);
+ /* Delay for UTMI PHY CLK to become stable - 10ms */
+ mdelay(FSL_UTMI_PHY_DLY);
+ }
+ setbits32(&p_otg->dr_mem_map->control, USB_CTRL_UTMI_PHY_EN);
temp |= PORTSC_PTS_UTMI;
/* fall through */
default:
--- a/drivers/usb/phy/phy-fsl-usb.h
+++ b/drivers/usb/phy/phy-fsl-usb.h
@@ -199,6 +199,14 @@
/* control Register Bit Masks */
#define USB_CTRL_IOENB (0x1<<2)
#define USB_CTRL_ULPI_INT0EN (0x1<<0)
+#define USB_CTRL_WU_INT_EN (0x1<<1)
+#define USB_CTRL_LINE_STATE_FILTER__EN (0x1<<3)
+#define USB_CTRL_KEEP_OTG_ON (0x1<<4)
+#define USB_CTRL_OTG_PORT (0x1<<5)
+#define USB_CTRL_PLL_RESET (0x1<<8)
+#define USB_CTRL_UTMI_PHY_EN (0x1<<9)
+#define USB_CTRL_ULPI_PHY_CLK_SEL (0x1<<10)
+#define USB_CTRL_PHY_CLK_VALID (0x1<<17)
/* BCSR5 */
#define BCSR5_INT_USB (0x02)
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -362,6 +362,7 @@ struct usb_bus {
* for control transfers?
*/
u8 otg_port; /* 0, or number of OTG/HNP port */
+ unsigned is_otg:1; /* true when host is also otg */
unsigned is_b_host:1; /* true during some HNP roleswitches */
unsigned b_hnp_enable:1; /* OTG: did A-Host enable HNP? */
unsigned no_stop_on_short:1; /*
--- a/include/linux/usb/of.h
+++ b/include/linux/usb/of.h
@@ -11,6 +11,8 @@
#include <linux/usb/otg.h>
#include <linux/usb/phy.h>
+enum usb_dr_mode of_usb_get_dr_mode(struct device_node *np);
+
#if IS_ENABLED(CONFIG_OF)
enum usb_dr_mode of_usb_get_dr_mode_by_phy(struct device_node *np, int arg0);
bool of_usb_host_tpl_support(struct device_node *np);
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