usb: phy: rename nop_usb_xceiv => usb_phy_gen_xceiv
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@linutronix.de> Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Sebastian Andrzej Siewior
Felipe Balbi
parent
5ae90d8e46
commit
3fa4d7344b
15 changed files with 49 additions and 49 deletions
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@ -33,7 +33,7 @@
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#include <linux/mtd/nand.h>
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#include <linux/mmc/host.h>
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#include <linux/usb/phy.h>
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#include <linux/usb/nop-usb-xceiv.h>
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#include <linux/usb/usb_phy_gen_xceiv.h>
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#include <linux/regulator/machine.h>
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#include <linux/i2c/twl.h>
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@ -279,7 +279,7 @@ static struct regulator_consumer_supply beagle_vsim_supply[] = {
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static struct gpio_led gpio_leds[];
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/* PHY's VCC regulator might be added later, so flag that we need it */
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static struct nop_usb_xceiv_platform_data hsusb2_phy_data = {
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static struct usb_phy_gen_xceiv_platform_data hsusb2_phy_data = {
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.needs_vcc = true,
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};
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@ -33,7 +33,7 @@
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#include <linux/i2c/twl.h>
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#include <linux/usb/otg.h>
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#include <linux/usb/musb.h>
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#include <linux/usb/nop-usb-xceiv.h>
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#include <linux/usb/usb_phy_gen_xceiv.h>
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#include <linux/smsc911x.h>
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#include <linux/wl12xx.h>
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@ -468,7 +468,7 @@ struct wl12xx_platform_data omap3evm_wlan_data __initdata = {
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static struct regulator_consumer_supply omap3evm_vaux2_supplies[] = {
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REGULATOR_SUPPLY("VDD_CSIPHY1", "omap3isp"), /* OMAP ISP */
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REGULATOR_SUPPLY("VDD_CSIPHY2", "omap3isp"), /* OMAP ISP */
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REGULATOR_SUPPLY("vcc", "nop_usb_xceiv.2"), /* hsusb port 2 */
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REGULATOR_SUPPLY("vcc", "usb_phy_gen_xceiv.2"), /* hsusb port 2 */
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REGULATOR_SUPPLY("vaux2", NULL),
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};
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@ -352,7 +352,7 @@ static struct regulator_consumer_supply pandora_vcc_lcd_supply[] = {
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};
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static struct regulator_consumer_supply pandora_usb_phy_supply[] = {
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REGULATOR_SUPPLY("vcc", "nop_usb_xceiv.2"), /* hsusb port 2 */
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REGULATOR_SUPPLY("vcc", "usb_phy_gen_xceiv.2"), /* hsusb port 2 */
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};
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/* ads7846 on SPI and 2 nub controllers on I2C */
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@ -28,7 +28,7 @@
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#include <linux/io.h>
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#include <linux/gpio.h>
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#include <linux/usb/phy.h>
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#include <linux/usb/nop-usb-xceiv.h>
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#include <linux/usb/usb_phy_gen_xceiv.h>
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#include "soc.h"
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#include "omap_device.h"
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@ -349,7 +349,7 @@ static struct fixed_voltage_config hsusb_reg_config = {
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/* .init_data filled later */
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};
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static const char *nop_name = "nop_usb_xceiv"; /* NOP PHY driver */
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static const char *nop_name = "usb_phy_gen_xceiv"; /* NOP PHY driver */
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static const char *reg_name = "reg-fixed-voltage"; /* Regulator driver */
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/**
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@ -460,9 +460,9 @@ int usbhs_init_phys(struct usbhs_phy_data *phy, int num_phys)
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pdevinfo.name = nop_name;
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pdevinfo.id = phy->port;
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pdevinfo.data = phy->platform_data;
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pdevinfo.size_data = sizeof(struct nop_usb_xceiv_platform_data);
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scnprintf(phy_id, MAX_STR, "nop_usb_xceiv.%d",
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pdevinfo.size_data =
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sizeof(struct usb_phy_gen_xceiv_platform_data);
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scnprintf(phy_id, MAX_STR, "usb_phy_gen_xceiv.%d",
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phy->port);
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pdev = platform_device_register_full(&pdevinfo);
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if (IS_ERR(pdev)) {
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@ -20,7 +20,7 @@
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#include <linux/dma-mapping.h>
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#include <linux/clk.h>
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#include <linux/usb/otg.h>
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#include <linux/usb/nop-usb-xceiv.h>
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#include <linux/usb/usb_phy_gen_xceiv.h>
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#include <linux/of.h>
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#include <linux/of_platform.h>
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@ -34,13 +34,13 @@ struct dwc3_exynos {
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static int dwc3_exynos_register_phys(struct dwc3_exynos *exynos)
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{
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struct nop_usb_xceiv_platform_data pdata;
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struct usb_phy_gen_xceiv_platform_data pdata;
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struct platform_device *pdev;
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int ret;
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memset(&pdata, 0x00, sizeof(pdata));
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pdev = platform_device_alloc("nop_usb_xceiv", PLATFORM_DEVID_AUTO);
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pdev = platform_device_alloc("usb_phy_gen_xceiv", PLATFORM_DEVID_AUTO);
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if (!pdev)
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return -ENOMEM;
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@ -51,7 +51,7 @@ static int dwc3_exynos_register_phys(struct dwc3_exynos *exynos)
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if (ret)
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goto err1;
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pdev = platform_device_alloc("nop_usb_xceiv", PLATFORM_DEVID_AUTO);
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pdev = platform_device_alloc("usb_phy_gen_xceiv", PLATFORM_DEVID_AUTO);
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if (!pdev) {
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ret = -ENOMEM;
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goto err1;
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@ -43,7 +43,7 @@
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#include <linux/platform_device.h>
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#include <linux/usb/otg.h>
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#include <linux/usb/nop-usb-xceiv.h>
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#include <linux/usb/usb_phy_gen_xceiv.h>
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/* FIXME define these in <linux/pci_ids.h> */
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#define PCI_VENDOR_ID_SYNOPSYS 0x16c3
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@ -58,13 +58,13 @@ struct dwc3_pci {
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static int dwc3_pci_register_phys(struct dwc3_pci *glue)
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{
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struct nop_usb_xceiv_platform_data pdata;
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struct usb_phy_gen_xceiv_platform_data pdata;
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struct platform_device *pdev;
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int ret;
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memset(&pdata, 0x00, sizeof(pdata));
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pdev = platform_device_alloc("nop_usb_xceiv", 0);
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pdev = platform_device_alloc("usb_phy_gen_xceiv", 0);
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if (!pdev)
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return -ENOMEM;
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@ -75,7 +75,7 @@ static int dwc3_pci_register_phys(struct dwc3_pci *glue)
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if (ret)
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goto err1;
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pdev = platform_device_alloc("nop_usb_xceiv", 1);
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pdev = platform_device_alloc("usb_phy_gen_xceiv", 1);
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if (!pdev) {
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ret = -ENOMEM;
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goto err1;
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@ -33,7 +33,7 @@
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#include <linux/io.h>
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#include <linux/platform_device.h>
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#include <linux/dma-mapping.h>
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#include <linux/usb/nop-usb-xceiv.h>
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#include <linux/usb/usb_phy_gen_xceiv.h>
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#include <linux/platform_data/usb-omap.h>
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#include "musb_core.h"
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@ -19,7 +19,7 @@
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#include <linux/platform_device.h>
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#include <linux/dma-mapping.h>
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#include <linux/prefetch.h>
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#include <linux/usb/nop-usb-xceiv.h>
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#include <linux/usb/usb_phy_gen_xceiv.h>
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#include <asm/cacheflush.h>
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@ -33,7 +33,7 @@
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#include <linux/io.h>
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#include <linux/platform_device.h>
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#include <linux/dma-mapping.h>
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#include <linux/usb/nop-usb-xceiv.h>
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#include <linux/usb/usb_phy_gen_xceiv.h>
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#include <mach/da8xx.h>
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#include <linux/platform_data/usb-davinci.h>
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@ -33,7 +33,7 @@
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#include <linux/gpio.h>
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#include <linux/platform_device.h>
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#include <linux/dma-mapping.h>
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#include <linux/usb/nop-usb-xceiv.h>
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#include <linux/usb/usb_phy_gen_xceiv.h>
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#include <mach/cputype.h>
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#include <mach/hardware.h>
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@ -36,7 +36,7 @@
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#include <linux/dma-mapping.h>
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#include <linux/pm_runtime.h>
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#include <linux/module.h>
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#include <linux/usb/nop-usb-xceiv.h>
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#include <linux/usb/usb_phy_gen_xceiv.h>
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#include <linux/platform_data/usb-omap.h>
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#include <linux/sizes.h>
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@ -25,7 +25,7 @@
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#include <linux/io.h>
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#include <linux/platform_device.h>
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#include <linux/dma-mapping.h>
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#include <linux/usb/nop-usb-xceiv.h>
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#include <linux/usb/usb_phy_gen_xceiv.h>
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#include "musb_core.h"
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@ -14,7 +14,7 @@ phy-fsl-usb2-objs := phy-fsl-usb.o phy-fsm-usb.o
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obj-$(CONFIG_FSL_USB2_OTG) += phy-fsl-usb2.o
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obj-$(CONFIG_ISP1301_OMAP) += phy-isp1301-omap.o
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obj-$(CONFIG_MV_U3D_PHY) += phy-mv-u3d-usb.o
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obj-$(CONFIG_NOP_USB_XCEIV) += phy-nop.o
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obj-$(CONFIG_NOP_USB_XCEIV) += phy-generic.o
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obj-$(CONFIG_OMAP_CONTROL_USB) += phy-omap-control.o
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obj-$(CONFIG_OMAP_USB2) += phy-omap-usb2.o
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obj-$(CONFIG_OMAP_USB3) += phy-omap-usb3.o
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292
drivers/usb/phy/phy-generic.c
Normal file
292
drivers/usb/phy/phy-generic.c
Normal file
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@ -0,0 +1,292 @@
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/*
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* drivers/usb/otg/nop-usb-xceiv.c
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*
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* NOP USB transceiver for all USB transceiver which are either built-in
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* into USB IP or which are mostly autonomous.
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*
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* Copyright (C) 2009 Texas Instruments Inc
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* Author: Ajay Kumar Gupta <ajay.gupta@ti.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* Current status:
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* This provides a "nop" transceiver for PHYs which are
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* autonomous such as isp1504, isp1707, etc.
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*/
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/dma-mapping.h>
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#include <linux/usb/otg.h>
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#include <linux/usb/usb_phy_gen_xceiv.h>
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#include <linux/slab.h>
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#include <linux/clk.h>
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#include <linux/regulator/consumer.h>
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#include <linux/of.h>
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struct usb_phy_gen_xceiv {
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struct usb_phy phy;
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struct device *dev;
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struct clk *clk;
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struct regulator *vcc;
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struct regulator *reset;
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};
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static struct platform_device *pd;
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void usb_nop_xceiv_register(void)
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{
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if (pd)
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return;
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pd = platform_device_register_simple("usb_phy_gen_xceiv", -1, NULL, 0);
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if (!pd) {
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pr_err("Unable to register generic usb transceiver\n");
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return;
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}
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}
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EXPORT_SYMBOL(usb_nop_xceiv_register);
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void usb_nop_xceiv_unregister(void)
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{
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platform_device_unregister(pd);
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pd = NULL;
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}
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EXPORT_SYMBOL(usb_nop_xceiv_unregister);
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static int nop_set_suspend(struct usb_phy *x, int suspend)
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{
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return 0;
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}
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static int nop_init(struct usb_phy *phy)
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{
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struct usb_phy_gen_xceiv *nop = dev_get_drvdata(phy->dev);
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if (!IS_ERR(nop->vcc)) {
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if (regulator_enable(nop->vcc))
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dev_err(phy->dev, "Failed to enable power\n");
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}
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if (!IS_ERR(nop->clk))
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clk_enable(nop->clk);
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if (!IS_ERR(nop->reset)) {
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/* De-assert RESET */
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if (regulator_enable(nop->reset))
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dev_err(phy->dev, "Failed to de-assert reset\n");
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}
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return 0;
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}
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static void nop_shutdown(struct usb_phy *phy)
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{
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struct usb_phy_gen_xceiv *nop = dev_get_drvdata(phy->dev);
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if (!IS_ERR(nop->reset)) {
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/* Assert RESET */
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if (regulator_disable(nop->reset))
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dev_err(phy->dev, "Failed to assert reset\n");
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}
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if (!IS_ERR(nop->clk))
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clk_disable(nop->clk);
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if (!IS_ERR(nop->vcc)) {
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if (regulator_disable(nop->vcc))
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dev_err(phy->dev, "Failed to disable power\n");
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}
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}
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static int nop_set_peripheral(struct usb_otg *otg, struct usb_gadget *gadget)
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{
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if (!otg)
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return -ENODEV;
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if (!gadget) {
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otg->gadget = NULL;
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return -ENODEV;
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}
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otg->gadget = gadget;
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otg->phy->state = OTG_STATE_B_IDLE;
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return 0;
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}
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static int nop_set_host(struct usb_otg *otg, struct usb_bus *host)
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{
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if (!otg)
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return -ENODEV;
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if (!host) {
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otg->host = NULL;
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return -ENODEV;
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}
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otg->host = host;
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return 0;
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}
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static int usb_phy_gen_xceiv_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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struct usb_phy_gen_xceiv_platform_data *pdata = pdev->dev.platform_data;
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struct usb_phy_gen_xceiv *nop;
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enum usb_phy_type type = USB_PHY_TYPE_USB2;
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int err;
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u32 clk_rate = 0;
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bool needs_vcc = false;
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bool needs_reset = false;
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nop = devm_kzalloc(&pdev->dev, sizeof(*nop), GFP_KERNEL);
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if (!nop)
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return -ENOMEM;
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nop->phy.otg = devm_kzalloc(&pdev->dev, sizeof(*nop->phy.otg),
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GFP_KERNEL);
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if (!nop->phy.otg)
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return -ENOMEM;
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if (dev->of_node) {
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struct device_node *node = dev->of_node;
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if (of_property_read_u32(node, "clock-frequency", &clk_rate))
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clk_rate = 0;
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needs_vcc = of_property_read_bool(node, "vcc-supply");
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needs_reset = of_property_read_bool(node, "reset-supply");
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} else if (pdata) {
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type = pdata->type;
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clk_rate = pdata->clk_rate;
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needs_vcc = pdata->needs_vcc;
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needs_reset = pdata->needs_reset;
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}
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nop->clk = devm_clk_get(&pdev->dev, "main_clk");
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if (IS_ERR(nop->clk)) {
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dev_dbg(&pdev->dev, "Can't get phy clock: %ld\n",
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PTR_ERR(nop->clk));
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}
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if (!IS_ERR(nop->clk) && clk_rate) {
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err = clk_set_rate(nop->clk, clk_rate);
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if (err) {
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dev_err(&pdev->dev, "Error setting clock rate\n");
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return err;
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}
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}
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if (!IS_ERR(nop->clk)) {
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err = clk_prepare(nop->clk);
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if (err) {
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dev_err(&pdev->dev, "Error preparing clock\n");
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return err;
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}
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}
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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");
|
||||
29
include/linux/usb/usb_phy_gen_xceiv.h
Normal file
29
include/linux/usb/usb_phy_gen_xceiv.h
Normal file
|
|
@ -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 */
|
||||
Loading…
Reference in a new issue