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-rw-r--r--arch/arm/mach-pxa/pxa3xx-ulpi.c385
1 files changed, 0 insertions, 385 deletions
diff --git a/arch/arm/mach-pxa/pxa3xx-ulpi.c b/arch/arm/mach-pxa/pxa3xx-ulpi.c
deleted file mode 100644
index c29a7f0fa1b0..000000000000
--- a/arch/arm/mach-pxa/pxa3xx-ulpi.c
+++ /dev/null
@@ -1,385 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * linux/arch/arm/mach-pxa/pxa3xx-ulpi.c
- *
- * code specific to pxa3xx aka Monahans
- *
- * Copyright (C) 2010 CompuLab Ltd.
- *
- * 2010-13-07: Igor Grinberg <grinberg@compulab.co.il>
- * initial version: pxa310 USB Host mode support
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/device.h>
-#include <linux/platform_device.h>
-#include <linux/err.h>
-#include <linux/io.h>
-#include <linux/delay.h>
-#include <linux/clk.h>
-#include <linux/usb.h>
-#include <linux/usb/otg.h>
-#include <linux/soc/pxa/cpu.h>
-
-#include "regs-u2d.h"
-#include <linux/platform_data/usb-pxa3xx-ulpi.h>
-
-struct pxa3xx_u2d_ulpi {
- struct clk *clk;
- void __iomem *mmio_base;
-
- struct usb_phy *otg;
- unsigned int ulpi_mode;
-};
-
-static struct pxa3xx_u2d_ulpi *u2d;
-
-static inline u32 u2d_readl(u32 reg)
-{
- return __raw_readl(u2d->mmio_base + reg);
-}
-
-static inline void u2d_writel(u32 reg, u32 val)
-{
- __raw_writel(val, u2d->mmio_base + reg);
-}
-
-#if defined(CONFIG_PXA310_ULPI)
-enum u2d_ulpi_phy_mode {
- SYNCH = 0,
- CARKIT = (1 << 0),
- SER_3PIN = (1 << 1),
- SER_6PIN = (1 << 2),
- LOWPOWER = (1 << 3),
-};
-
-static inline enum u2d_ulpi_phy_mode pxa310_ulpi_get_phymode(void)
-{
- return (u2d_readl(U2DOTGUSR) >> 28) & 0xF;
-}
-
-static int pxa310_ulpi_poll(void)
-{
- int timeout = 50000;
-
- while (timeout--) {
- if (!(u2d_readl(U2DOTGUCR) & U2DOTGUCR_RUN))
- return 0;
-
- cpu_relax();
- }
-
- pr_warn("%s: ULPI access timed out!\n", __func__);
-
- return -ETIMEDOUT;
-}
-
-static int pxa310_ulpi_read(struct usb_phy *otg, u32 reg)
-{
- int err;
-
- if (pxa310_ulpi_get_phymode() != SYNCH) {
- pr_warn("%s: PHY is not in SYNCH mode!\n", __func__);
- return -EBUSY;
- }
-
- u2d_writel(U2DOTGUCR, U2DOTGUCR_RUN | U2DOTGUCR_RNW | (reg << 16));
- msleep(5);
-
- err = pxa310_ulpi_poll();
- if (err)
- return err;
-
- return u2d_readl(U2DOTGUCR) & U2DOTGUCR_RDATA;
-}
-
-static int pxa310_ulpi_write(struct usb_phy *otg, u32 val, u32 reg)
-{
- if (pxa310_ulpi_get_phymode() != SYNCH) {
- pr_warn("%s: PHY is not in SYNCH mode!\n", __func__);
- return -EBUSY;
- }
-
- u2d_writel(U2DOTGUCR, U2DOTGUCR_RUN | (reg << 16) | (val << 8));
- msleep(5);
-
- return pxa310_ulpi_poll();
-}
-
-struct usb_phy_io_ops pxa310_ulpi_access_ops = {
- .read = pxa310_ulpi_read,
- .write = pxa310_ulpi_write,
-};
-
-static void pxa310_otg_transceiver_rtsm(void)
-{
- u32 u2dotgcr;
-
- /* put PHY to sync mode */
- u2dotgcr = u2d_readl(U2DOTGCR);
- u2dotgcr |= U2DOTGCR_RTSM | U2DOTGCR_UTMID;
- u2d_writel(U2DOTGCR, u2dotgcr);
- msleep(10);
-
- /* setup OTG sync mode */
- u2dotgcr = u2d_readl(U2DOTGCR);
- u2dotgcr |= U2DOTGCR_ULAF;
- u2dotgcr &= ~(U2DOTGCR_SMAF | U2DOTGCR_CKAF);
- u2d_writel(U2DOTGCR, u2dotgcr);
-}
-
-static int pxa310_start_otg_host_transcvr(struct usb_bus *host)
-{
- int err;
-
- pxa310_otg_transceiver_rtsm();
-
- err = usb_phy_init(u2d->otg);
- if (err) {
- pr_err("OTG transceiver init failed");
- return err;
- }
-
- err = otg_set_vbus(u2d->otg->otg, 1);
- if (err) {
- pr_err("OTG transceiver VBUS set failed");
- return err;
- }
-
- err = otg_set_host(u2d->otg->otg, host);
- if (err)
- pr_err("OTG transceiver Host mode set failed");
-
- return err;
-}
-
-static int pxa310_start_otg_hc(struct usb_bus *host)
-{
- u32 u2dotgcr;
- int err;
-
- /* disable USB device controller */
- u2d_writel(U2DCR, u2d_readl(U2DCR) & ~U2DCR_UDE);
- u2d_writel(U2DOTGCR, u2d_readl(U2DOTGCR) | U2DOTGCR_UTMID);
- u2d_writel(U2DOTGICR, u2d_readl(U2DOTGICR) & ~0x37F7F);
-
- err = pxa310_start_otg_host_transcvr(host);
- if (err)
- return err;
-
- /* set xceiver mode */
- if (u2d->ulpi_mode & ULPI_IC_6PIN_SERIAL)
- u2d_writel(U2DP3CR, u2d_readl(U2DP3CR) & ~U2DP3CR_P2SS);
- else if (u2d->ulpi_mode & ULPI_IC_3PIN_SERIAL)
- u2d_writel(U2DP3CR, u2d_readl(U2DP3CR) | U2DP3CR_P2SS);
-
- /* start OTG host controller */
- u2dotgcr = u2d_readl(U2DOTGCR) | U2DOTGCR_SMAF;
- u2d_writel(U2DOTGCR, u2dotgcr & ~(U2DOTGCR_ULAF | U2DOTGCR_CKAF));
-
- return 0;
-}
-
-static void pxa310_stop_otg_hc(void)
-{
- pxa310_otg_transceiver_rtsm();
-
- otg_set_host(u2d->otg->otg, NULL);
- otg_set_vbus(u2d->otg->otg, 0);
- usb_phy_shutdown(u2d->otg);
-}
-
-static void pxa310_u2d_setup_otg_hc(void)
-{
- u32 u2dotgcr;
-
- u2dotgcr = u2d_readl(U2DOTGCR);
- u2dotgcr |= U2DOTGCR_ULAF | U2DOTGCR_UTMID;
- u2dotgcr &= ~(U2DOTGCR_SMAF | U2DOTGCR_CKAF);
- u2d_writel(U2DOTGCR, u2dotgcr);
- msleep(5);
- u2d_writel(U2DOTGCR, u2dotgcr | U2DOTGCR_ULE);
- msleep(5);
- u2d_writel(U2DOTGICR, u2d_readl(U2DOTGICR) & ~0x37F7F);
-}
-
-static int pxa310_otg_init(struct pxa3xx_u2d_platform_data *pdata)
-{
- unsigned int ulpi_mode = ULPI_OTG_DRVVBUS;
-
- if (pdata) {
- if (pdata->ulpi_mode & ULPI_SER_6PIN)
- ulpi_mode |= ULPI_IC_6PIN_SERIAL;
- else if (pdata->ulpi_mode & ULPI_SER_3PIN)
- ulpi_mode |= ULPI_IC_3PIN_SERIAL;
- }
-
- u2d->ulpi_mode = ulpi_mode;
-
- u2d->otg = otg_ulpi_create(&pxa310_ulpi_access_ops, ulpi_mode);
- if (!u2d->otg)
- return -ENOMEM;
-
- u2d->otg->io_priv = u2d->mmio_base;
-
- return 0;
-}
-
-static void pxa310_otg_exit(void)
-{
- kfree(u2d->otg);
-}
-#else
-static inline void pxa310_u2d_setup_otg_hc(void) {}
-static inline int pxa310_start_otg_hc(struct usb_bus *host)
-{
- return 0;
-}
-static inline void pxa310_stop_otg_hc(void) {}
-static inline int pxa310_otg_init(struct pxa3xx_u2d_platform_data *pdata)
-{
- return 0;
-}
-static inline void pxa310_otg_exit(void) {}
-#endif /* CONFIG_PXA310_ULPI */
-
-int pxa3xx_u2d_start_hc(struct usb_bus *host)
-{
- int err = 0;
-
- /* In case the PXA3xx ULPI isn't used, do nothing. */
- if (!u2d)
- return 0;
-
- clk_prepare_enable(u2d->clk);
-
- if (cpu_is_pxa310()) {
- pxa310_u2d_setup_otg_hc();
- err = pxa310_start_otg_hc(host);
- }
-
- return err;
-}
-EXPORT_SYMBOL_GPL(pxa3xx_u2d_start_hc);
-
-void pxa3xx_u2d_stop_hc(struct usb_bus *host)
-{
- /* In case the PXA3xx ULPI isn't used, do nothing. */
- if (!u2d)
- return;
-
- if (cpu_is_pxa310())
- pxa310_stop_otg_hc();
-
- clk_disable_unprepare(u2d->clk);
-}
-EXPORT_SYMBOL_GPL(pxa3xx_u2d_stop_hc);
-
-static int pxa3xx_u2d_probe(struct platform_device *pdev)
-{
- struct pxa3xx_u2d_platform_data *pdata = pdev->dev.platform_data;
- struct resource *r;
- int err;
-
- u2d = kzalloc(sizeof(*u2d), GFP_KERNEL);
- if (!u2d)
- return -ENOMEM;
-
- u2d->clk = clk_get(&pdev->dev, NULL);
- if (IS_ERR(u2d->clk)) {
- dev_err(&pdev->dev, "failed to get u2d clock\n");
- err = PTR_ERR(u2d->clk);
- goto err_free_mem;
- }
-
- r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!r) {
- dev_err(&pdev->dev, "no IO memory resource defined\n");
- err = -ENODEV;
- goto err_put_clk;
- }
-
- r = request_mem_region(r->start, resource_size(r), pdev->name);
- if (!r) {
- dev_err(&pdev->dev, "failed to request memory resource\n");
- err = -EBUSY;
- goto err_put_clk;
- }
-
- u2d->mmio_base = ioremap(r->start, resource_size(r));
- if (!u2d->mmio_base) {
- dev_err(&pdev->dev, "ioremap() failed\n");
- err = -ENODEV;
- goto err_free_res;
- }
-
- if (pdata->init) {
- err = pdata->init(&pdev->dev);
- if (err)
- goto err_free_io;
- }
-
- /* Only PXA310 U2D has OTG functionality */
- if (cpu_is_pxa310()) {
- err = pxa310_otg_init(pdata);
- if (err)
- goto err_free_plat;
- }
-
- platform_set_drvdata(pdev, u2d);
-
- return 0;
-
-err_free_plat:
- if (pdata->exit)
- pdata->exit(&pdev->dev);
-err_free_io:
- iounmap(u2d->mmio_base);
-err_free_res:
- release_mem_region(r->start, resource_size(r));
-err_put_clk:
- clk_put(u2d->clk);
-err_free_mem:
- kfree(u2d);
- return err;
-}
-
-static int pxa3xx_u2d_remove(struct platform_device *pdev)
-{
- struct pxa3xx_u2d_platform_data *pdata = pdev->dev.platform_data;
- struct resource *r;
-
- if (cpu_is_pxa310()) {
- pxa310_stop_otg_hc();
- pxa310_otg_exit();
- }
-
- if (pdata->exit)
- pdata->exit(&pdev->dev);
-
- platform_set_drvdata(pdev, NULL);
- iounmap(u2d->mmio_base);
- r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- release_mem_region(r->start, resource_size(r));
-
- clk_put(u2d->clk);
-
- kfree(u2d);
-
- return 0;
-}
-
-static struct platform_driver pxa3xx_u2d_ulpi_driver = {
- .driver = {
- .name = "pxa3xx-u2d",
- },
- .probe = pxa3xx_u2d_probe,
- .remove = pxa3xx_u2d_remove,
-};
-module_platform_driver(pxa3xx_u2d_ulpi_driver);
-
-MODULE_DESCRIPTION("PXA3xx U2D ULPI driver");
-MODULE_AUTHOR("Igor Grinberg");
-MODULE_LICENSE("GPL v2");