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authorLinus Torvalds <torvalds@linux-foundation.org>2023-02-21 02:28:57 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2023-02-21 02:28:57 +0300
commitff0c7e18629b8bd64681313a88ce55e182c9fee6 (patch)
tree70efa650f6458514e1d7e5e3f72cc8f87fc5cf2c /arch/arm/mach-pxa/pxa3xx-ulpi.c
parent5b0ed5964928b0aaf0d644c17c886c7f5ea4bb3f (diff)
parenta1f925bc4fa899b3c0f2dcbc432d572c36e74e71 (diff)
downloadlinux-ff0c7e18629b8bd64681313a88ce55e182c9fee6.tar.xz
Merge tag 'arm-boardfile-remove-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC boardfile updates from Arnd Bergmann "Unused boardfile removal for 6.3 This is a follow-up to the deprecation of most of the old-style board files that was merged in linux-6.0, removing them for good. This branch is almost exclusively dead code removal based on those annotations. Some device driver removals went through separate subsystem trees, but the majority is in the same branch, in order to better handle dependencies between the patches and avoid breaking bisection. Unfortunately that leads to merge conflicts against other changes in the subsystem trees, but they should all be trivial to resolve by removing the files. See commit 7d0d3fa7339e ("Merge tag 'arm-boardfiles-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc") for the description of which machines were marked unused and are now removed. The only removals that got postponed are Terastation WXL (mv78xx0) and Jornada720 (StrongARM1100), which turned out to still have potential users" * tag 'arm-boardfile-remove-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (91 commits) mmc: omap: drop TPS65010 dependency ARM: pxa: restore mfp-pxa320.h usb: ohci-omap: avoid unused-variable warning ARM: debug: remove references in DEBUG_UART_8250_SHIFT to removed configs ARM: s3c: remove obsolete s3c-cpu-freq header MAINTAINERS: adjust SAMSUNG SOC CLOCK DRIVERS after s3c24xx support removal MAINTAINERS: update file entries after arm multi-platform rework and mach-pxa removal ARM: remove CONFIG_UNUSED_BOARD_FILES mfd: remove htc-pasic3 driver w1: remove ds1wm driver usb: remove ohci-tmio driver fbdev: remove w100fb driver fbdev: remove tmiofb driver mmc: remove tmio_mmc driver mfd: remove ucb1400 support mfd: remove toshiba tmio drivers rtc: remove v3020 driver power: remove pda_power supply driver ASoC: pxa: remove unused board support pcmcia: remove unused pxa/sa1100 drivers ...
Diffstat (limited to 'arch/arm/mach-pxa/pxa3xx-ulpi.c')
-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");