^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-1.0+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * OHCI HCD (Host Controller Driver) for USB.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2004 SAN People (Pty) Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 2005 Thibaut VARENE <varenet@parisc-linux.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * AT91 Bus Glue
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Based on fragments of 2.4 driver by Rick Bronson.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * Based on ohci-omap.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * This file is licenced under the GPL.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/clk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/dma-mapping.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/gpio/consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/of_platform.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/platform_data/atmel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/mfd/syscon.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/usb.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/usb/hcd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <soc/at91/atmel-sfr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include "ohci.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define valid_port(index) ((index) >= 0 && (index) < AT91_MAX_USBH_PORTS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define at91_for_each_port(index) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) for ((index) = 0; (index) < AT91_MAX_USBH_PORTS; (index)++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) /* interface, function and usb clocks; sometimes also an AHB clock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define hcd_to_ohci_at91_priv(h) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) ((struct ohci_at91_priv *)hcd_to_ohci(h)->priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define AT91_MAX_USBH_PORTS 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) struct at91_usbh_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) struct gpio_desc *vbus_pin[AT91_MAX_USBH_PORTS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) struct gpio_desc *overcurrent_pin[AT91_MAX_USBH_PORTS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) u8 ports; /* number of ports on root hub */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) u8 overcurrent_supported;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) u8 overcurrent_status[AT91_MAX_USBH_PORTS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) u8 overcurrent_changed[AT91_MAX_USBH_PORTS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) struct ohci_at91_priv {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) struct clk *iclk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct clk *fclk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) struct clk *hclk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) bool clocked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) bool wakeup; /* Saved wake-up state for resume */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) struct regmap *sfr_regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) /* interface and function clocks; sometimes also an AHB clock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) #define DRIVER_DESC "OHCI Atmel driver"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) static const char hcd_name[] = "ohci-atmel";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) static struct hc_driver __read_mostly ohci_at91_hc_driver;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) static const struct ohci_driver_overrides ohci_at91_drv_overrides __initconst = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) .extra_priv_size = sizeof(struct ohci_at91_priv),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) /*-------------------------------------------------------------------------*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) static void at91_start_clock(struct ohci_at91_priv *ohci_at91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) if (ohci_at91->clocked)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) clk_set_rate(ohci_at91->fclk, 48000000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) clk_prepare_enable(ohci_at91->hclk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) clk_prepare_enable(ohci_at91->iclk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) clk_prepare_enable(ohci_at91->fclk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) ohci_at91->clocked = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) static void at91_stop_clock(struct ohci_at91_priv *ohci_at91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) if (!ohci_at91->clocked)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) clk_disable_unprepare(ohci_at91->fclk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) clk_disable_unprepare(ohci_at91->iclk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) clk_disable_unprepare(ohci_at91->hclk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) ohci_at91->clocked = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) static void at91_start_hc(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) struct usb_hcd *hcd = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) struct ohci_regs __iomem *regs = hcd->regs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) struct ohci_at91_priv *ohci_at91 = hcd_to_ohci_at91_priv(hcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) dev_dbg(&pdev->dev, "start\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) * Start the USB clocks.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) at91_start_clock(ohci_at91);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) * The USB host controller must remain in reset.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) writel(0, ®s->control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) static void at91_stop_hc(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) struct usb_hcd *hcd = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) struct ohci_at91_priv *ohci_at91 = hcd_to_ohci_at91_priv(hcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) dev_dbg(&pdev->dev, "stop\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) * Put the USB host controller into reset.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) usb_hcd_platform_shutdown(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) * Stop the USB clocks.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) at91_stop_clock(ohci_at91);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) /*-------------------------------------------------------------------------*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) static void usb_hcd_at91_remove (struct usb_hcd *, struct platform_device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) static struct regmap *at91_dt_syscon_sfr(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) struct regmap *regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) regmap = syscon_regmap_lookup_by_compatible("atmel,sama5d2-sfr");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) if (IS_ERR(regmap)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) regmap = syscon_regmap_lookup_by_compatible("microchip,sam9x60-sfr");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) if (IS_ERR(regmap))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) regmap = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) return regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) /* configure so an HC device and id are always provided */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) /* always called with process context; sleeping is OK */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) * usb_hcd_at91_probe - initialize AT91-based HCDs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) * Context: !in_interrupt()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) * Allocates basic resources for this USB host controller, and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) * then invokes the start() method for the HCD associated with it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) * through the hotplug entry's driver_data.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) static int usb_hcd_at91_probe(const struct hc_driver *driver,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) struct at91_usbh_data *board;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) struct ohci_hcd *ohci;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) struct usb_hcd *hcd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) struct ohci_at91_priv *ohci_at91;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) struct device *dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) int irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) irq = platform_get_irq(pdev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) if (irq < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) dev_dbg(dev, "hcd probe: missing irq resource\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) return irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) hcd = usb_create_hcd(driver, dev, "at91");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) if (!hcd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) ohci_at91 = hcd_to_ohci_at91_priv(hcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) hcd->regs = devm_ioremap_resource(dev, res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) if (IS_ERR(hcd->regs)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) retval = PTR_ERR(hcd->regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) hcd->rsrc_start = res->start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) hcd->rsrc_len = resource_size(res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) ohci_at91->iclk = devm_clk_get(dev, "ohci_clk");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) if (IS_ERR(ohci_at91->iclk)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) dev_err(dev, "failed to get ohci_clk\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) retval = PTR_ERR(ohci_at91->iclk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) ohci_at91->fclk = devm_clk_get(dev, "uhpck");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) if (IS_ERR(ohci_at91->fclk)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) dev_err(dev, "failed to get uhpck\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) retval = PTR_ERR(ohci_at91->fclk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) ohci_at91->hclk = devm_clk_get(dev, "hclk");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) if (IS_ERR(ohci_at91->hclk)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) dev_err(dev, "failed to get hclk\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) retval = PTR_ERR(ohci_at91->hclk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) ohci_at91->sfr_regmap = at91_dt_syscon_sfr();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) if (!ohci_at91->sfr_regmap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) dev_dbg(dev, "failed to find sfr node\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) board = hcd->self.controller->platform_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) ohci = hcd_to_ohci(hcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) ohci->num_ports = board->ports;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) at91_start_hc(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) * The RemoteWakeupConnected bit has to be set explicitly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) * before calling ohci_run. The reset value of this bit is 0.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) ohci->hc_control = OHCI_CTRL_RWC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) if (retval == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) device_wakeup_enable(hcd->self.controller);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) /* Error handling */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) at91_stop_hc(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) usb_put_hcd(hcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) /* may be called with controller, bus, and devices active */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) * usb_hcd_at91_remove - shutdown processing for AT91-based HCDs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) * Context: !in_interrupt()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) * Reverses the effect of usb_hcd_at91_probe(), first invoking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) * the HCD's stop() method. It is always called from a thread
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) * context, "rmmod" or something similar.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) static void usb_hcd_at91_remove(struct usb_hcd *hcd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) usb_remove_hcd(hcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) at91_stop_hc(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) usb_put_hcd(hcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) /*-------------------------------------------------------------------------*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) static void ohci_at91_usb_set_power(struct at91_usbh_data *pdata, int port, int enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) if (!valid_port(port))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) gpiod_set_value(pdata->vbus_pin[port], enable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) static int ohci_at91_usb_get_power(struct at91_usbh_data *pdata, int port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) if (!valid_port(port))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) return gpiod_get_value(pdata->vbus_pin[port]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) * Update the status data from the hub with the over-current indicator change.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) static int ohci_at91_hub_status_data(struct usb_hcd *hcd, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) struct at91_usbh_data *pdata = hcd->self.controller->platform_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) int length = ohci_hub_status_data(hcd, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) int port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) at91_for_each_port(port) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) if (pdata->overcurrent_changed[port]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) if (!length)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) length = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) buf[0] |= 1 << (port + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) return length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) static int ohci_at91_port_suspend(struct regmap *regmap, u8 set)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) u32 regval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) if (!regmap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) ret = regmap_read(regmap, AT91_SFR_OHCIICR, ®val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) if (set)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) regval |= AT91_OHCIICR_USB_SUSPEND;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) regval &= ~AT91_OHCIICR_USB_SUSPEND;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) regmap_write(regmap, AT91_SFR_OHCIICR, regval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) * Look at the control requests to the root hub and see if we need to override.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) static int ohci_at91_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) u16 wIndex, char *buf, u16 wLength)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) struct at91_usbh_data *pdata = dev_get_platdata(hcd->self.controller);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) struct ohci_at91_priv *ohci_at91 = hcd_to_ohci_at91_priv(hcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) struct usb_hub_descriptor *desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) int ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) u32 *data = (u32 *)buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) dev_dbg(hcd->self.controller,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) "ohci_at91_hub_control(%p,0x%04x,0x%04x,0x%04x,%p,%04x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) hcd, typeReq, wValue, wIndex, buf, wLength);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) wIndex--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) switch (typeReq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) case SetPortFeature:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) switch (wValue) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) case USB_PORT_FEAT_POWER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) dev_dbg(hcd->self.controller, "SetPortFeat: POWER\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) if (valid_port(wIndex)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) ohci_at91_usb_set_power(pdata, wIndex, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) case USB_PORT_FEAT_SUSPEND:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) dev_dbg(hcd->self.controller, "SetPortFeat: SUSPEND\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) if (valid_port(wIndex) && ohci_at91->sfr_regmap) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) ohci_at91_port_suspend(ohci_at91->sfr_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) case ClearPortFeature:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) switch (wValue) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) case USB_PORT_FEAT_C_OVER_CURRENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) dev_dbg(hcd->self.controller,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) "ClearPortFeature: C_OVER_CURRENT\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) if (valid_port(wIndex)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) pdata->overcurrent_changed[wIndex] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) pdata->overcurrent_status[wIndex] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) case USB_PORT_FEAT_OVER_CURRENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) dev_dbg(hcd->self.controller,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) "ClearPortFeature: OVER_CURRENT\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) if (valid_port(wIndex))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) pdata->overcurrent_status[wIndex] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) case USB_PORT_FEAT_POWER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) dev_dbg(hcd->self.controller,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) "ClearPortFeature: POWER\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) if (valid_port(wIndex)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) ohci_at91_usb_set_power(pdata, wIndex, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) case USB_PORT_FEAT_SUSPEND:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) dev_dbg(hcd->self.controller, "ClearPortFeature: SUSPEND\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) if (valid_port(wIndex) && ohci_at91->sfr_regmap) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) ohci_at91_port_suspend(ohci_at91->sfr_regmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) ret = ohci_hub_control(hcd, typeReq, wValue, wIndex + 1, buf, wLength);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) switch (typeReq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) case GetHubDescriptor:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) /* update the hub's descriptor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) desc = (struct usb_hub_descriptor *)buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) dev_dbg(hcd->self.controller, "wHubCharacteristics 0x%04x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) desc->wHubCharacteristics);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) /* remove the old configurations for power-switching, and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) * over-current protection, and insert our new configuration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) desc->wHubCharacteristics &= ~cpu_to_le16(HUB_CHAR_LPSM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) desc->wHubCharacteristics |=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) cpu_to_le16(HUB_CHAR_INDV_PORT_LPSM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) if (pdata->overcurrent_supported) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) desc->wHubCharacteristics &= ~cpu_to_le16(HUB_CHAR_OCPM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) desc->wHubCharacteristics |=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) cpu_to_le16(HUB_CHAR_INDV_PORT_OCPM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) dev_dbg(hcd->self.controller, "wHubCharacteristics after 0x%04x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) desc->wHubCharacteristics);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) case GetPortStatus:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) /* check port status */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) dev_dbg(hcd->self.controller, "GetPortStatus(%d)\n", wIndex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) if (valid_port(wIndex)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) if (!ohci_at91_usb_get_power(pdata, wIndex))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) *data &= ~cpu_to_le32(RH_PS_PPS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) if (pdata->overcurrent_changed[wIndex])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) *data |= cpu_to_le32(RH_PS_OCIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) if (pdata->overcurrent_status[wIndex])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) *data |= cpu_to_le32(RH_PS_POCI);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) /*-------------------------------------------------------------------------*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) static irqreturn_t ohci_hcd_at91_overcurrent_irq(int irq, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) struct platform_device *pdev = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) struct at91_usbh_data *pdata = dev_get_platdata(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) int val, port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) /* From the GPIO notifying the over-current situation, find
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) * out the corresponding port */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) at91_for_each_port(port) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) if (gpiod_to_irq(pdata->overcurrent_pin[port]) == irq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) if (port == AT91_MAX_USBH_PORTS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) dev_err(& pdev->dev, "overcurrent interrupt from unknown GPIO\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) val = gpiod_get_value(pdata->overcurrent_pin[port]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) /* When notified of an over-current situation, disable power
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) on the corresponding port, and mark this port in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) over-current. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) if (!val) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) ohci_at91_usb_set_power(pdata, port, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) pdata->overcurrent_status[port] = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) pdata->overcurrent_changed[port] = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) dev_dbg(& pdev->dev, "overcurrent situation %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) val ? "exited" : "notified");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) static const struct of_device_id at91_ohci_dt_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) { .compatible = "atmel,at91rm9200-ohci" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) { /* sentinel */ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) MODULE_DEVICE_TABLE(of, at91_ohci_dt_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) /*-------------------------------------------------------------------------*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) static int ohci_hcd_at91_drv_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) struct device_node *np = pdev->dev.of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) struct at91_usbh_data *pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) u32 ports;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) /* Right now device-tree probed devices don't get dma_mask set.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) * Since shared usb code relies on it, set it here for now.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) * Once we have dma capability bindings this can go away.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) ret = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) if (!pdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) pdev->dev.platform_data = pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) if (!of_property_read_u32(np, "num-ports", &ports))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) pdata->ports = ports;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) at91_for_each_port(i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) if (i >= pdata->ports)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) pdata->vbus_pin[i] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) devm_gpiod_get_index_optional(&pdev->dev, "atmel,vbus",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) i, GPIOD_OUT_HIGH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) if (IS_ERR(pdata->vbus_pin[i])) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) err = PTR_ERR(pdata->vbus_pin[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) dev_err(&pdev->dev, "unable to claim gpio \"vbus\": %d\n", err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) at91_for_each_port(i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) if (i >= pdata->ports)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) pdata->overcurrent_pin[i] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) devm_gpiod_get_index_optional(&pdev->dev, "atmel,oc",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) i, GPIOD_IN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) if (!pdata->overcurrent_pin[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) if (IS_ERR(pdata->overcurrent_pin[i])) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) err = PTR_ERR(pdata->overcurrent_pin[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) dev_err(&pdev->dev, "unable to claim gpio \"overcurrent\": %d\n", err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) ret = devm_request_irq(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) gpiod_to_irq(pdata->overcurrent_pin[i]),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) ohci_hcd_at91_overcurrent_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) IRQF_SHARED,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) "ohci_overcurrent", pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) dev_info(&pdev->dev, "failed to request gpio \"overcurrent\" IRQ\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) device_init_wakeup(&pdev->dev, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) return usb_hcd_at91_probe(&ohci_at91_hc_driver, pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) static int ohci_hcd_at91_drv_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) struct at91_usbh_data *pdata = dev_get_platdata(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) if (pdata) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) at91_for_each_port(i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) ohci_at91_usb_set_power(pdata, i, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) device_init_wakeup(&pdev->dev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) usb_hcd_at91_remove(platform_get_drvdata(pdev), pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) static int __maybe_unused
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) ohci_hcd_at91_drv_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) struct usb_hcd *hcd = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) struct ohci_hcd *ohci = hcd_to_ohci(hcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) struct ohci_at91_priv *ohci_at91 = hcd_to_ohci_at91_priv(hcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) * Disable wakeup if we are going to sleep with slow clock mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) * enabled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) ohci_at91->wakeup = device_may_wakeup(dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) && !at91_suspend_entering_slow_clock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) if (ohci_at91->wakeup)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) enable_irq_wake(hcd->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) ret = ohci_suspend(hcd, ohci_at91->wakeup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) if (ohci_at91->wakeup)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) disable_irq_wake(hcd->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) * The integrated transceivers seem unable to notice disconnect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) * reconnect, or wakeup without the 48 MHz clock active. so for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) * correctness, always discard connection state (using reset).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) * REVISIT: some boards will be able to turn VBUS off...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) if (!ohci_at91->wakeup) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) ohci->rh_state = OHCI_RH_HALTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) /* flush the writes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) (void) ohci_readl (ohci, &ohci->regs->control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) msleep(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) ohci_at91_port_suspend(ohci_at91->sfr_regmap, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) at91_stop_clock(ohci_at91);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) ohci_at91_port_suspend(ohci_at91->sfr_regmap, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) static int __maybe_unused
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) ohci_hcd_at91_drv_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) struct usb_hcd *hcd = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) struct ohci_at91_priv *ohci_at91 = hcd_to_ohci_at91_priv(hcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) ohci_at91_port_suspend(ohci_at91->sfr_regmap, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) if (ohci_at91->wakeup)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) disable_irq_wake(hcd->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) at91_start_clock(ohci_at91);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) ohci_resume(hcd, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) static SIMPLE_DEV_PM_OPS(ohci_hcd_at91_pm_ops, ohci_hcd_at91_drv_suspend,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) ohci_hcd_at91_drv_resume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) static struct platform_driver ohci_hcd_at91_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) .probe = ohci_hcd_at91_drv_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) .remove = ohci_hcd_at91_drv_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) .shutdown = usb_hcd_platform_shutdown,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) .name = "at91_ohci",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) .pm = &ohci_hcd_at91_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) .of_match_table = at91_ohci_dt_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) static int __init ohci_at91_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) if (usb_disabled())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) pr_info("%s: " DRIVER_DESC "\n", hcd_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) ohci_init_driver(&ohci_at91_hc_driver, &ohci_at91_drv_overrides);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) * The Atmel HW has some unusual quirks, which require Atmel-specific
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) * workarounds. We override certain hc_driver functions here to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) * achieve that. We explicitly do not enhance ohci_driver_overrides to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) * allow this more easily, since this is an unusual case, and we don't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) * want to encourage others to override these functions by making it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) * too easy.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) ohci_at91_hc_driver.hub_status_data = ohci_at91_hub_status_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) ohci_at91_hc_driver.hub_control = ohci_at91_hub_control;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) return platform_driver_register(&ohci_hcd_at91_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) module_init(ohci_at91_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) static void __exit ohci_at91_cleanup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) platform_driver_unregister(&ohci_hcd_at91_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) module_exit(ohci_at91_cleanup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) MODULE_DESCRIPTION(DRIVER_DESC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) MODULE_ALIAS("platform:at91_ohci");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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