The "nop" driver isn't a do-nothing-stub but supports a couple functions
like clock on/off or is able to use a voltage regulator. This patch
simply renames the driver to "generic" since it is easy possible to
extend it by a simple function istead of writing a complete driver.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
---
arch/arm/mach-omap2/board-omap3beagle.c | 4 +-
arch/arm/mach-omap2/board-omap3evm.c | 4 +-
arch/arm/mach-omap2/board-omap3pandora.c | 2 +-
arch/arm/mach-omap2/usb-host.c | 10 +-
drivers/usb/dwc3/dwc3-exynos.c | 8 +-
drivers/usb/dwc3/dwc3-pci.c | 8 +-
drivers/usb/musb/am35x.c | 2 +-
drivers/usb/musb/blackfin.c | 2 +-
drivers/usb/musb/da8xx.c | 2 +-
drivers/usb/musb/davinci.c | 2 +-
drivers/usb/musb/musb_dsps.c | 2 +-
drivers/usb/musb/tusb6010.c | 2 +-
drivers/usb/phy/Makefile | 2 +-
drivers/usb/phy/phy-generic.c | 292 +++++++++++++++++++++++++++++++
drivers/usb/phy/phy-nop.c | 292 -------------------------------
include/linux/usb/nop-usb-xceiv.h | 29 ---
include/linux/usb/usb_phy_gen_xceiv.h | 29 +++
17 files changed, 346 insertions(+), 346 deletions(-)
create mode 100644 drivers/usb/phy/phy-generic.c
delete mode 100644 drivers/usb/phy/phy-nop.c
delete mode 100644 include/linux/usb/nop-usb-xceiv.h
create mode 100644 include/linux/usb/usb_phy_gen_xceiv.h
diff --git a/arch/arm/mach-omap2/board-omap3beagle.c b/arch/arm/mach-omap2/board-omap3beagle.c
index 04c1165..1c6ae5f 100644
--- a/arch/arm/mach-omap2/board-omap3beagle.c
+++ b/arch/arm/mach-omap2/board-omap3beagle.c
@@ -33,7 +33,7 @@
#include <linux/mtd/nand.h>
#include <linux/mmc/host.h>
#include <linux/usb/phy.h>
-#include <linux/usb/nop-usb-xceiv.h>
+#include <linux/usb/usb_phy_gen_xceiv.h>
#include <linux/regulator/machine.h>
#include <linux/i2c/twl.h>
@@ -279,7 +279,7 @@ static struct regulator_consumer_supply beagle_vsim_supply[] = {
static struct gpio_led gpio_leds[];
/* PHY's VCC regulator might be added later, so flag that we need it */
-static struct nop_usb_xceiv_platform_data hsusb2_phy_data = {
+static struct usb_phy_gen_xceiv_platform_data hsusb2_phy_data = {
.needs_vcc = true,
};
diff --git a/arch/arm/mach-omap2/board-omap3evm.c b/arch/arm/mach-omap2/board-omap3evm.c
index 8c02626..52bdddd 100644
--- a/arch/arm/mach-omap2/board-omap3evm.c
+++ b/arch/arm/mach-omap2/board-omap3evm.c
@@ -33,7 +33,7 @@
#include <linux/i2c/twl.h>
#include <linux/usb/otg.h>
#include <linux/usb/musb.h>
-#include <linux/usb/nop-usb-xceiv.h>
+#include <linux/usb/usb_phy_gen_xceiv.h>
#include <linux/smsc911x.h>
#include <linux/wl12xx.h>
@@ -468,7 +468,7 @@ struct wl12xx_platform_data omap3evm_wlan_data __initdata = {
static struct regulator_consumer_supply omap3evm_vaux2_supplies[] = {
REGULATOR_SUPPLY("VDD_CSIPHY1", "omap3isp"), /* OMAP ISP */
REGULATOR_SUPPLY("VDD_CSIPHY2", "omap3isp"), /* OMAP ISP */
- REGULATOR_SUPPLY("vcc", "nop_usb_xceiv.2"), /* hsusb port 2 */
+ REGULATOR_SUPPLY("vcc", "usb_phy_gen_xceiv.2"), /* hsusb port 2 */
REGULATOR_SUPPLY("vaux2", NULL),
};
diff --git a/arch/arm/mach-omap2/board-omap3pandora.c b/arch/arm/mach-omap2/board-omap3pandora.c
index b1547a0..d2b455e 100644
--- a/arch/arm/mach-omap2/board-omap3pandora.c
+++ b/arch/arm/mach-omap2/board-omap3pandora.c
@@ -352,7 +352,7 @@ static struct regulator_consumer_supply pandora_vcc_lcd_supply[] = {
};
static struct regulator_consumer_supply pandora_usb_phy_supply[] = {
- REGULATOR_SUPPLY("vcc", "nop_usb_xceiv.2"), /* hsusb port 2 */
+ REGULATOR_SUPPLY("vcc", "usb_phy_gen_xceiv.2"), /* hsusb port 2 */
};
/* ads7846 on SPI and 2 nub controllers on I2C */
diff --git a/arch/arm/mach-omap2/usb-host.c b/arch/arm/mach-omap2/usb-host.c
index 2eb19d4..e83a6a4 100644
--- a/arch/arm/mach-omap2/usb-host.c
+++ b/arch/arm/mach-omap2/usb-host.c
@@ -28,7 +28,7 @@
#include <linux/io.h>
#include <linux/gpio.h>
#include <linux/usb/phy.h>
-#include <linux/usb/nop-usb-xceiv.h>
+#include <linux/usb/usb_phy_gen_xceiv.h>
#include "soc.h"
#include "omap_device.h"
@@ -349,7 +349,7 @@ static struct fixed_voltage_config hsusb_reg_config = {
/* .init_data filled later */
};
-static const char *nop_name = "nop_usb_xceiv"; /* NOP PHY driver */
+static const char *nop_name = "usb_phy_gen_xceiv"; /* NOP PHY driver */
static const char *reg_name = "reg-fixed-voltage"; /* Regulator driver */
/**
@@ -460,9 +460,9 @@ int usbhs_init_phys(struct usbhs_phy_data *phy, int num_phys)
pdevinfo.name = nop_name;
pdevinfo.id = phy->port;
pdevinfo.data = phy->platform_data;
- pdevinfo.size_data = sizeof(struct nop_usb_xceiv_platform_data);
-
- scnprintf(phy_id, MAX_STR, "nop_usb_xceiv.%d",
+ pdevinfo.size_data =
+ sizeof(struct usb_phy_gen_xceiv_platform_data);
+ scnprintf(phy_id, MAX_STR, "usb_phy_gen_xceiv.%d",
phy->port);
pdev = platform_device_register_full(&pdevinfo);
if (IS_ERR(pdev)) {
diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c
index 9a8a5e1..2f2e88a 100644
--- a/drivers/usb/dwc3/dwc3-exynos.c
+++ b/drivers/usb/dwc3/dwc3-exynos.c
@@ -24,7 +24,7 @@
#include <linux/dma-mapping.h>
#include <linux/clk.h>
#include <linux/usb/otg.h>
-#include <linux/usb/nop-usb-xceiv.h>
+#include <linux/usb/usb_phy_gen_xceiv.h>
#include <linux/of.h>
#include <linux/of_platform.h>
@@ -38,13 +38,13 @@ struct dwc3_exynos {
static int dwc3_exynos_register_phys(struct dwc3_exynos *exynos)
{
- struct nop_usb_xceiv_platform_data pdata;
+ struct usb_phy_gen_xceiv_platform_data pdata;
struct platform_device *pdev;
int ret;
memset(&pdata, 0x00, sizeof(pdata));
- pdev = platform_device_alloc("nop_usb_xceiv", PLATFORM_DEVID_AUTO);
+ pdev = platform_device_alloc("usb_phy_gen_xceiv", PLATFORM_DEVID_AUTO);
if (!pdev)
return -ENOMEM;
@@ -55,7 +55,7 @@ static int dwc3_exynos_register_phys(struct dwc3_exynos *exynos)
if (ret)
goto err1;
- pdev = platform_device_alloc("nop_usb_xceiv", PLATFORM_DEVID_AUTO);
+ pdev = platform_device_alloc("usb_phy_gen_xceiv", PLATFORM_DEVID_AUTO);
if (!pdev) {
ret = -ENOMEM;
goto err1;
diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c
index 5d746e5..6f5ac34 100644
--- a/drivers/usb/dwc3/dwc3-pci.c
+++ b/drivers/usb/dwc3/dwc3-pci.c
@@ -23,7 +23,7 @@
#include <linux/platform_device.h>
#include <linux/usb/otg.h>
-#include <linux/usb/nop-usb-xceiv.h>
+#include <linux/usb/usb_phy_gen_xceiv.h>
/* FIXME define these in <linux/pci_ids.h> */
#define PCI_VENDOR_ID_SYNOPSYS 0x16c3
@@ -38,13 +38,13 @@ struct dwc3_pci {
static int dwc3_pci_register_phys(struct dwc3_pci *glue)
{
- struct nop_usb_xceiv_platform_data pdata;
+ struct usb_phy_gen_xceiv_platform_data pdata;
struct platform_device *pdev;
int ret;
memset(&pdata, 0x00, sizeof(pdata));
- pdev = platform_device_alloc("nop_usb_xceiv", 0);
+ pdev = platform_device_alloc("usb_phy_gen_xceiv", 0);
if (!pdev)
return -ENOMEM;
@@ -55,7 +55,7 @@ static int dwc3_pci_register_phys(struct dwc3_pci *glue)
if (ret)
goto err1;
- pdev = platform_device_alloc("nop_usb_xceiv", 1);
+ pdev = platform_device_alloc("usb_phy_gen_xceiv", 1);
if (!pdev) {
ret = -ENOMEM;
goto err1;
diff --git a/drivers/usb/musb/am35x.c b/drivers/usb/musb/am35x.c
index 2231850..5733a20 100644
--- a/drivers/usb/musb/am35x.c
+++ b/drivers/usb/musb/am35x.c
@@ -33,7 +33,7 @@
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
-#include <linux/usb/nop-usb-xceiv.h>
+#include <linux/usb/usb_phy_gen_xceiv.h>
#include <linux/platform_data/usb-omap.h>
#include "musb_core.h"
diff --git a/drivers/usb/musb/blackfin.c b/drivers/usb/musb/blackfin.c
index 6ba8439..195e966 100644
--- a/drivers/usb/musb/blackfin.c
+++ b/drivers/usb/musb/blackfin.c
@@ -19,7 +19,7 @@
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <linux/prefetch.h>
-#include <linux/usb/nop-usb-xceiv.h>
+#include <linux/usb/usb_phy_gen_xceiv.h>
#include <asm/cacheflush.h>
diff --git a/drivers/usb/musb/da8xx.c b/drivers/usb/musb/da8xx.c
index 0da6f64..ccc6b63 100644
--- a/drivers/usb/musb/da8xx.c
+++ b/drivers/usb/musb/da8xx.c
@@ -33,7 +33,7 @@
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
-#include <linux/usb/nop-usb-xceiv.h>
+#include <linux/usb/usb_phy_gen_xceiv.h>
#include <mach/da8xx.h>
#include <linux/platform_data/usb-davinci.h>
diff --git a/drivers/usb/musb/davinci.c b/drivers/usb/musb/davinci.c
index f8aeaf2..91f300e 100644
--- a/drivers/usb/musb/davinci.c
+++ b/drivers/usb/musb/davinci.c
@@ -33,7 +33,7 @@
#include <linux/gpio.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
-#include <linux/usb/nop-usb-xceiv.h>
+#include <linux/usb/usb_phy_gen_xceiv.h>
#include <mach/cputype.h>
#include <mach/hardware.h>
diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c
index 23f511f..05c2a02 100644
--- a/drivers/usb/musb/musb_dsps.c
+++ b/drivers/usb/musb/musb_dsps.c
@@ -36,7 +36,7 @@
#include <linux/dma-mapping.h>
#include <linux/pm_runtime.h>
#include <linux/module.h>
-#include <linux/usb/nop-usb-xceiv.h>
+#include <linux/usb/usb_phy_gen_xceiv.h>
#include <linux/platform_data/usb-omap.h>
#include <linux/sizes.h>
diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c
index 6f8a9ca..c642f09 100644
--- a/drivers/usb/musb/tusb6010.c
+++ b/drivers/usb/musb/tusb6010.c
@@ -25,7 +25,7 @@
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
-#include <linux/usb/nop-usb-xceiv.h>
+#include <linux/usb/usb_phy_gen_xceiv.h>
#include "musb_core.h"
diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile
index 070eca3..24c5816 100644
--- a/drivers/usb/phy/Makefile
+++ b/drivers/usb/phy/Makefile
@@ -14,7 +14,7 @@ phy-fsl-usb2-objs := phy-fsl-usb.o phy-fsm-usb.o
obj-$(CONFIG_FSL_USB2_OTG) += phy-fsl-usb2.o
obj-$(CONFIG_ISP1301_OMAP) += phy-isp1301-omap.o
obj-$(CONFIG_MV_U3D_PHY) += phy-mv-u3d-usb.o
-obj-$(CONFIG_NOP_USB_XCEIV) += phy-nop.o
+obj-$(CONFIG_NOP_USB_XCEIV) += phy-generic.o
obj-$(CONFIG_OMAP_CONTROL_USB) += phy-omap-control.o
obj-$(CONFIG_OMAP_USB2) += phy-omap-usb2.o
obj-$(CONFIG_OMAP_USB3) += phy-omap-usb3.o
diff --git a/drivers/usb/phy/phy-generic.c b/drivers/usb/phy/phy-generic.c
new file mode 100644
index 0000000..f379b7d
--- /dev/null
+++ b/drivers/usb/phy/phy-generic.c
@@ -0,0 +1,292 @@
+/*
+ * drivers/usb/otg/nop-usb-xceiv.c
+ *
+ * NOP USB transceiver for all USB transceiver which are either built-in
+ * into USB IP or which are mostly autonomous.
+ *
+ * Copyright (C) 2009 Texas Instruments Inc
+ * Author: Ajay Kumar Gupta <ajay.gupta@xxxxxx>
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Current status:
+ * This provides a "nop" transceiver for PHYs which are
+ * autonomous such as isp1504, isp1707, etc.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include <linux/usb/otg.h>
+#include <linux/usb/usb_phy_gen_xceiv.h>
+#include <linux/slab.h>
+#include <linux/clk.h>
+#include <linux/regulator/consumer.h>
+#include <linux/of.h>
+
+struct usb_phy_gen_xceiv {
+ struct usb_phy phy;
+ struct device *dev;
+ struct clk *clk;
+ struct regulator *vcc;
+ struct regulator *reset;
+};
+
+static struct platform_device *pd;
+
+void usb_nop_xceiv_register(void)
+{
+ if (pd)
+ return;
+ pd = platform_device_register_simple("usb_phy_gen_xceiv", -1, NULL, 0);
+ if (!pd) {
+ pr_err("Unable to register generic usb transceiver\n");
+ return;
+ }
+}
+EXPORT_SYMBOL(usb_nop_xceiv_register);
+
+void usb_nop_xceiv_unregister(void)
+{
+ platform_device_unregister(pd);
+ pd = NULL;
+}
+EXPORT_SYMBOL(usb_nop_xceiv_unregister);
+
+static int nop_set_suspend(struct usb_phy *x, int suspend)
+{
+ return 0;
+}
+
+static int nop_init(struct usb_phy *phy)
+{
+ struct usb_phy_gen_xceiv *nop = dev_get_drvdata(phy->dev);
+
+ if (!IS_ERR(nop->vcc)) {
+ if (regulator_enable(nop->vcc))
+ dev_err(phy->dev, "Failed to enable power\n");
+ }
+
+ if (!IS_ERR(nop->clk))
+ clk_enable(nop->clk);
+
+ if (!IS_ERR(nop->reset)) {
+ /* De-assert RESET */
+ if (regulator_enable(nop->reset))
+ dev_err(phy->dev, "Failed to de-assert reset\n");
+ }
+
+ return 0;
+}
+
+static void nop_shutdown(struct usb_phy *phy)
+{
+ struct usb_phy_gen_xceiv *nop = dev_get_drvdata(phy->dev);
+
+ if (!IS_ERR(nop->reset)) {
+ /* Assert RESET */
+ if (regulator_disable(nop->reset))
+ dev_err(phy->dev, "Failed to assert reset\n");
+ }
+
+ if (!IS_ERR(nop->clk))
+ clk_disable(nop->clk);
+
+ if (!IS_ERR(nop->vcc)) {
+ if (regulator_disable(nop->vcc))
+ dev_err(phy->dev, "Failed to disable power\n");
+ }
+}
+
+static int nop_set_peripheral(struct usb_otg *otg, struct usb_gadget *gadget)
+{
+ if (!otg)
+ return -ENODEV;
+
+ if (!gadget) {
+ otg->gadget = NULL;
+ return -ENODEV;
+ }
+
+ otg->gadget = gadget;
+ otg->phy->state = OTG_STATE_B_IDLE;
+ return 0;
+}
+
+static int nop_set_host(struct usb_otg *otg, struct usb_bus *host)
+{
+ if (!otg)
+ return -ENODEV;
+
+ if (!host) {
+ otg->host = NULL;
+ return -ENODEV;
+ }
+
+ otg->host = host;
+ return 0;
+}
+
+static int usb_phy_gen_xceiv_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct usb_phy_gen_xceiv_platform_data *pdata = pdev->dev.platform_data;
+ struct usb_phy_gen_xceiv *nop;
+ enum usb_phy_type type = USB_PHY_TYPE_USB2;
+ int err;
+ u32 clk_rate = 0;
+ bool needs_vcc = false;
+ bool needs_reset = false;
+
+ nop = devm_kzalloc(&pdev->dev, sizeof(*nop), GFP_KERNEL);
+ if (!nop)
+ return -ENOMEM;
+
+ nop->phy.otg = devm_kzalloc(&pdev->dev, sizeof(*nop->phy.otg),
+ GFP_KERNEL);
+ if (!nop->phy.otg)
+ return -ENOMEM;
+
+ if (dev->of_node) {
+ struct device_node *node = dev->of_node;
+
+ if (of_property_read_u32(node, "clock-frequency", &clk_rate))
+ clk_rate = 0;
+
+ needs_vcc = of_property_read_bool(node, "vcc-supply");
+ needs_reset = of_property_read_bool(node, "reset-supply");
+
+ } else if (pdata) {
+ type = pdata->type;
+ clk_rate = pdata->clk_rate;
+ needs_vcc = pdata->needs_vcc;
+ needs_reset = pdata->needs_reset;
+ }
+
+ nop->clk = devm_clk_get(&pdev->dev, "main_clk");
+ if (IS_ERR(nop->clk)) {
+ dev_dbg(&pdev->dev, "Can't get phy clock: %ld\n",
+ PTR_ERR(nop->clk));
+ }
+
+ if (!IS_ERR(nop->clk) && clk_rate) {
+ err = clk_set_rate(nop->clk, clk_rate);
+ if (err) {
+ dev_err(&pdev->dev, "Error setting clock rate\n");
+ return err;
+ }
+ }
+
+ if (!IS_ERR(nop->clk)) {
+ err = clk_prepare(nop->clk);
+ if (err) {
+ dev_err(&pdev->dev, "Error preparing clock\n");
+ return err;
+ }
+ }
+
+ nop->vcc = devm_regulator_get(&pdev->dev, "vcc");
+ if (IS_ERR(nop->vcc)) {
+ dev_dbg(&pdev->dev, "Error getting vcc regulator: %ld\n",
+ PTR_ERR(nop->vcc));
+ if (needs_vcc)
+ return -EPROBE_DEFER;
+ }
+
+ nop->reset = devm_regulator_get(&pdev->dev, "reset");
+ if (IS_ERR(nop->reset)) {
+ dev_dbg(&pdev->dev, "Error getting reset regulator: %ld\n",
+ PTR_ERR(nop->reset));
+ if (needs_reset)
+ return -EPROBE_DEFER;
+ }
+
+ nop->dev = &pdev->dev;
+ nop->phy.dev = nop->dev;
+ nop->phy.label = "nop-xceiv";
+ nop->phy.set_suspend = nop_set_suspend;
+ nop->phy.init = nop_init;
+ nop->phy.shutdown = nop_shutdown;
+ nop->phy.state = OTG_STATE_UNDEFINED;
+ nop->phy.type = type;
+
+ nop->phy.otg->phy = &nop->phy;
+ nop->phy.otg->set_host = nop_set_host;
+ nop->phy.otg->set_peripheral = nop_set_peripheral;
+
+ err = usb_add_phy_dev(&nop->phy);
+ if (err) {
+ dev_err(&pdev->dev, "can't register transceiver, err: %d\n",
+ err);
+ goto err_add;
+ }
+
+ platform_set_drvdata(pdev, nop);
+
+ ATOMIC_INIT_NOTIFIER_HEAD(&nop->phy.notifier);
+
+ return 0;
+
+err_add:
+ if (!IS_ERR(nop->clk))
+ clk_unprepare(nop->clk);
+ return err;
+}
+
+static int usb_phy_gen_xceiv_remove(struct platform_device *pdev)
+{
+ struct usb_phy_gen_xceiv *nop = platform_get_drvdata(pdev);
+
+ if (!IS_ERR(nop->clk))
+ clk_unprepare(nop->clk);
+
+ usb_remove_phy(&nop->phy);
+
+ return 0;
+}
+
+static const struct of_device_id nop_xceiv_dt_ids[] = {
+ { .compatible = "usb-nop-xceiv" },
+ { }
+};
+
+MODULE_DEVICE_TABLE(of, nop_xceiv_dt_ids);
+
+static struct platform_driver usb_phy_gen_xceiv_driver = {
+ .probe = usb_phy_gen_xceiv_probe,
+ .remove = usb_phy_gen_xceiv_remove,
+ .driver = {
+ .name = "usb_phy_gen_xceiv",
+ .owner = THIS_MODULE,
+ .of_match_table = nop_xceiv_dt_ids,
+ },
+};
+
+static int __init usb_phy_gen_xceiv_init(void)
+{
+ return platform_driver_register(&usb_phy_gen_xceiv_driver);
+}
+subsys_initcall(usb_phy_gen_xceiv_init);
+
+static void __exit usb_phy_gen_xceiv_exit(void)
+{
+ platform_driver_unregister(&usb_phy_gen_xceiv_driver);
+}
+module_exit(usb_phy_gen_xceiv_exit);
+
+MODULE_ALIAS("platform:usb_phy_gen_xceiv");
+MODULE_AUTHOR("Texas Instruments Inc");
+MODULE_DESCRIPTION("NOP USB Transceiver driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/usb/phy/phy-nop.c b/drivers/usb/phy/phy-nop.c
deleted file mode 100644
index 55445e5d..0000000
--- a/drivers/usb/phy/phy-nop.c
+++ /dev/null
@@ -1,292 +0,0 @@
-/*
- * drivers/usb/otg/nop-usb-xceiv.c
- *
- * NOP USB transceiver for all USB transceiver which are either built-in
- * into USB IP or which are mostly autonomous.
- *
- * Copyright (C) 2009 Texas Instruments Inc
- * Author: Ajay Kumar Gupta <ajay.gupta@xxxxxx>
- *
- * 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; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Current status:
- * This provides a "nop" transceiver for PHYs which are
- * autonomous such as isp1504, isp1707, etc.
- */
-
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/dma-mapping.h>
-#include <linux/usb/otg.h>
-#include <linux/usb/nop-usb-xceiv.h>
-#include <linux/slab.h>
-#include <linux/clk.h>
-#include <linux/regulator/consumer.h>
-#include <linux/of.h>
-
-struct nop_usb_xceiv {
- struct usb_phy phy;
- struct device *dev;
- struct clk *clk;
- struct regulator *vcc;
- struct regulator *reset;
-};
-
-static struct platform_device *pd;
-
-void usb_nop_xceiv_register(void)
-{
- if (pd)
- return;
- pd = platform_device_register_simple("nop_usb_xceiv", -1, NULL, 0);
- if (!pd) {
- printk(KERN_ERR "Unable to register usb nop transceiver\n");
- return;
- }
-}
-EXPORT_SYMBOL(usb_nop_xceiv_register);
-
-void usb_nop_xceiv_unregister(void)
-{
- platform_device_unregister(pd);
- pd = NULL;
-}
-EXPORT_SYMBOL(usb_nop_xceiv_unregister);
-
-static int nop_set_suspend(struct usb_phy *x, int suspend)
-{
- return 0;
-}
-
-static int nop_init(struct usb_phy *phy)
-{
- struct nop_usb_xceiv *nop = dev_get_drvdata(phy->dev);
-
- if (!IS_ERR(nop->vcc)) {
- if (regulator_enable(nop->vcc))
- dev_err(phy->dev, "Failed to enable power\n");
- }
-
- if (!IS_ERR(nop->clk))
- clk_enable(nop->clk);
-
- if (!IS_ERR(nop->reset)) {
- /* De-assert RESET */
- if (regulator_enable(nop->reset))
- dev_err(phy->dev, "Failed to de-assert reset\n");
- }
-
- return 0;
-}
-
-static void nop_shutdown(struct usb_phy *phy)
-{
- struct nop_usb_xceiv *nop = dev_get_drvdata(phy->dev);
-
- if (!IS_ERR(nop->reset)) {
- /* Assert RESET */
- if (regulator_disable(nop->reset))
- dev_err(phy->dev, "Failed to assert reset\n");
- }
-
- if (!IS_ERR(nop->clk))
- clk_disable(nop->clk);
-
- if (!IS_ERR(nop->vcc)) {
- if (regulator_disable(nop->vcc))
- dev_err(phy->dev, "Failed to disable power\n");
- }
-}
-
-static int nop_set_peripheral(struct usb_otg *otg, struct usb_gadget *gadget)
-{
- if (!otg)
- return -ENODEV;
-
- if (!gadget) {
- otg->gadget = NULL;
- return -ENODEV;
- }
-
- otg->gadget = gadget;
- otg->phy->state = OTG_STATE_B_IDLE;
- return 0;
-}
-
-static int nop_set_host(struct usb_otg *otg, struct usb_bus *host)
-{
- if (!otg)
- return -ENODEV;
-
- if (!host) {
- otg->host = NULL;
- return -ENODEV;
- }
-
- otg->host = host;
- return 0;
-}
-
-static int nop_usb_xceiv_probe(struct platform_device *pdev)
-{
- struct device *dev = &pdev->dev;
- struct nop_usb_xceiv_platform_data *pdata = pdev->dev.platform_data;
- struct nop_usb_xceiv *nop;
- enum usb_phy_type type = USB_PHY_TYPE_USB2;
- int err;
- u32 clk_rate = 0;
- bool needs_vcc = false;
- bool needs_reset = false;
-
- nop = devm_kzalloc(&pdev->dev, sizeof(*nop), GFP_KERNEL);
- if (!nop)
- return -ENOMEM;
-
- nop->phy.otg = devm_kzalloc(&pdev->dev, sizeof(*nop->phy.otg),
- GFP_KERNEL);
- if (!nop->phy.otg)
- return -ENOMEM;
-
- if (dev->of_node) {
- struct device_node *node = dev->of_node;
-
- if (of_property_read_u32(node, "clock-frequency", &clk_rate))
- clk_rate = 0;
-
- needs_vcc = of_property_read_bool(node, "vcc-supply");
- needs_reset = of_property_read_bool(node, "reset-supply");
-
- } else if (pdata) {
- type = pdata->type;
- clk_rate = pdata->clk_rate;
- needs_vcc = pdata->needs_vcc;
- needs_reset = pdata->needs_reset;
- }
-
- nop->clk = devm_clk_get(&pdev->dev, "main_clk");
- if (IS_ERR(nop->clk)) {
- dev_dbg(&pdev->dev, "Can't get phy clock: %ld\n",
- PTR_ERR(nop->clk));
- }
-
- if (!IS_ERR(nop->clk) && clk_rate) {
- err = clk_set_rate(nop->clk, clk_rate);
- if (err) {
- dev_err(&pdev->dev, "Error setting clock rate\n");
- return err;
- }
- }
-
- if (!IS_ERR(nop->clk)) {
- err = clk_prepare(nop->clk);
- if (err) {
- dev_err(&pdev->dev, "Error preparing clock\n");
- return err;
- }
- }
-
- nop->vcc = devm_regulator_get(&pdev->dev, "vcc");
- if (IS_ERR(nop->vcc)) {
- dev_dbg(&pdev->dev, "Error getting vcc regulator: %ld\n",
- PTR_ERR(nop->vcc));
- if (needs_vcc)
- return -EPROBE_DEFER;
- }
-
- nop->reset = devm_regulator_get(&pdev->dev, "reset");
- if (IS_ERR(nop->reset)) {
- dev_dbg(&pdev->dev, "Error getting reset regulator: %ld\n",
- PTR_ERR(nop->reset));
- if (needs_reset)
- return -EPROBE_DEFER;
- }
-
- nop->dev = &pdev->dev;
- nop->phy.dev = nop->dev;
- nop->phy.label = "nop-xceiv";
- nop->phy.set_suspend = nop_set_suspend;
- nop->phy.init = nop_init;
- nop->phy.shutdown = nop_shutdown;
- nop->phy.state = OTG_STATE_UNDEFINED;
- nop->phy.type = type;
-
- nop->phy.otg->phy = &nop->phy;
- nop->phy.otg->set_host = nop_set_host;
- nop->phy.otg->set_peripheral = nop_set_peripheral;
-
- err = usb_add_phy_dev(&nop->phy);
- if (err) {
- dev_err(&pdev->dev, "can't register transceiver, err: %d\n",
- err);
- goto err_add;
- }
-
- platform_set_drvdata(pdev, nop);
-
- ATOMIC_INIT_NOTIFIER_HEAD(&nop->phy.notifier);
-
- return 0;
-
-err_add:
- if (!IS_ERR(nop->clk))
- clk_unprepare(nop->clk);
- return err;
-}
-
-static int nop_usb_xceiv_remove(struct platform_device *pdev)
-{
- struct nop_usb_xceiv *nop = platform_get_drvdata(pdev);
-
- if (!IS_ERR(nop->clk))
- clk_unprepare(nop->clk);
-
- usb_remove_phy(&nop->phy);
-
- return 0;
-}
-
-static const struct of_device_id nop_xceiv_dt_ids[] = {
- { .compatible = "usb-nop-xceiv" },
- { }
-};
-
-MODULE_DEVICE_TABLE(of, nop_xceiv_dt_ids);
-
-static struct platform_driver nop_usb_xceiv_driver = {
- .probe = nop_usb_xceiv_probe,
- .remove = nop_usb_xceiv_remove,
- .driver = {
- .name = "nop_usb_xceiv",
- .owner = THIS_MODULE,
- .of_match_table = nop_xceiv_dt_ids,
- },
-};
-
-static int __init nop_usb_xceiv_init(void)
-{
- return platform_driver_register(&nop_usb_xceiv_driver);
-}
-subsys_initcall(nop_usb_xceiv_init);
-
-static void __exit nop_usb_xceiv_exit(void)
-{
- platform_driver_unregister(&nop_usb_xceiv_driver);
-}
-module_exit(nop_usb_xceiv_exit);
-
-MODULE_ALIAS("platform:nop_usb_xceiv");
-MODULE_AUTHOR("Texas Instruments Inc");
-MODULE_DESCRIPTION("NOP USB Transceiver driver");
-MODULE_LICENSE("GPL");
diff --git a/include/linux/usb/nop-usb-xceiv.h b/include/linux/usb/nop-usb-xceiv.h
deleted file mode 100644
index 148d351..0000000
--- a/include/linux/usb/nop-usb-xceiv.h
+++ /dev/null
@@ -1,29 +0,0 @@
-#ifndef __LINUX_USB_NOP_XCEIV_H
-#define __LINUX_USB_NOP_XCEIV_H
-
-#include <linux/usb/otg.h>
-
-struct nop_usb_xceiv_platform_data {
- enum usb_phy_type type;
- unsigned long clk_rate;
-
- /* if set fails with -EPROBE_DEFER if can't get regulator */
- unsigned int needs_vcc:1;
- unsigned int needs_reset:1;
-};
-
-#if defined(CONFIG_NOP_USB_XCEIV) || (defined(CONFIG_NOP_USB_XCEIV_MODULE) && defined(MODULE))
-/* sometimes transceivers are accessed only through e.g. ULPI */
-extern void usb_nop_xceiv_register(void);
-extern void usb_nop_xceiv_unregister(void);
-#else
-static inline void usb_nop_xceiv_register(void)
-{
-}
-
-static inline void usb_nop_xceiv_unregister(void)
-{
-}
-#endif
-
-#endif /* __LINUX_USB_NOP_XCEIV_H */
diff --git a/include/linux/usb/usb_phy_gen_xceiv.h b/include/linux/usb/usb_phy_gen_xceiv.h
new file mode 100644
index 0000000..f9a7e7b
--- /dev/null
+++ b/include/linux/usb/usb_phy_gen_xceiv.h
@@ -0,0 +1,29 @@
+#ifndef __LINUX_USB_NOP_XCEIV_H
+#define __LINUX_USB_NOP_XCEIV_H
+
+#include <linux/usb/otg.h>
+
+struct usb_phy_gen_xceiv_platform_data {
+ enum usb_phy_type type;
+ unsigned long clk_rate;
+
+ /* if set fails with -EPROBE_DEFER if can't get regulator */
+ unsigned int needs_vcc:1;
+ unsigned int needs_reset:1;
+};
+
+#if IS_ENABLED(CONFIG_NOP_USB_XCEIV)
+/* sometimes transceivers are accessed only through e.g. ULPI */
+extern void usb_nop_xceiv_register(void);
+extern void usb_nop_xceiv_unregister(void);
+#else
+static inline void usb_nop_xceiv_register(void)
+{
+}
+
+static inline void usb_nop_xceiv_unregister(void)
+{
+}
+#endif
+
+#endif /* __LINUX_USB_NOP_XCEIV_H */
--
1.8.3.2
--
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