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-rw-r--r--arch/arm/mach-pxa/Kconfig4
-rw-r--r--arch/arm/mach-pxa/Makefile2
-rw-r--r--arch/arm/mach-pxa/devices.c28
-rw-r--r--arch/arm/mach-pxa/devices.h1
-rw-r--r--arch/arm/mach-pxa/include/mach/pxa3xx-u2d.h35
-rw-r--r--arch/arm/mach-pxa/pxa3xx-ulpi.c392
-rw-r--r--arch/arm/mach-pxa/pxa3xx.c2
7 files changed, 462 insertions, 2 deletions
diff --git a/arch/arm/mach-pxa/Kconfig b/arch/arm/mach-pxa/Kconfig
index 7aefb9074852..3d4926edb675 100644
--- a/arch/arm/mach-pxa/Kconfig
+++ b/arch/arm/mach-pxa/Kconfig
@@ -643,6 +643,7 @@ config CPU_PXA300
config CPU_PXA310
bool
select CPU_PXA300
+ select PXA310_ULPI if USB_ULPI
help
PXA310 (codename Monahans-LV)
@@ -698,4 +699,7 @@ config PXA_HAVE_BOARD_IRQS
config PXA_HAVE_ISA_IRQS
bool
+config PXA310_ULPI
+ bool
+
endif
diff --git a/arch/arm/mach-pxa/Makefile b/arch/arm/mach-pxa/Makefile
index 85c7fb324dbb..a1db59b124f9 100644
--- a/arch/arm/mach-pxa/Makefile
+++ b/arch/arm/mach-pxa/Makefile
@@ -18,7 +18,7 @@ endif
# SoC-specific code
obj-$(CONFIG_PXA25x) += mfp-pxa2xx.o pxa2xx.o pxa25x.o
obj-$(CONFIG_PXA27x) += mfp-pxa2xx.o pxa2xx.o pxa27x.o
-obj-$(CONFIG_PXA3xx) += mfp-pxa3xx.o pxa3xx.o smemc.o
+obj-$(CONFIG_PXA3xx) += mfp-pxa3xx.o pxa3xx.o smemc.o pxa3xx-ulpi.o
obj-$(CONFIG_CPU_PXA300) += pxa300.o
obj-$(CONFIG_CPU_PXA320) += pxa320.o
obj-$(CONFIG_CPU_PXA930) += pxa930.o
diff --git a/arch/arm/mach-pxa/devices.c b/arch/arm/mach-pxa/devices.c
index 65447dc736c2..a2fc859251da 100644
--- a/arch/arm/mach-pxa/devices.c
+++ b/arch/arm/mach-pxa/devices.c
@@ -6,6 +6,7 @@
#include <asm/pmu.h>
#include <mach/udc.h>
+#include <mach/pxa3xx-u2d.h>
#include <mach/pxafb.h>
#include <mach/mmc.h>
#include <mach/irda.h>
@@ -134,6 +135,33 @@ struct platform_device pxa27x_device_udc = {
}
};
+#ifdef CONFIG_PXA3xx
+static struct resource pxa3xx_u2d_resources[] = {
+ [0] = {
+ .start = 0x54100000,
+ .end = 0x54100fff,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_USB2,
+ .end = IRQ_USB2,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+struct platform_device pxa3xx_device_u2d = {
+ .name = "pxa3xx-u2d",
+ .id = -1,
+ .resource = pxa3xx_u2d_resources,
+ .num_resources = ARRAY_SIZE(pxa3xx_u2d_resources),
+};
+
+void __init pxa3xx_set_u2d_info(struct pxa3xx_u2d_platform_data *info)
+{
+ pxa_register_device(&pxa3xx_device_u2d, info);
+}
+#endif /* CONFIG_PXA3xx */
+
static struct resource pxafb_resources[] = {
[0] = {
.start = 0x44000000,
diff --git a/arch/arm/mach-pxa/devices.h b/arch/arm/mach-pxa/devices.h
index 50353ea49ba4..715e8bd02e24 100644
--- a/arch/arm/mach-pxa/devices.h
+++ b/arch/arm/mach-pxa/devices.h
@@ -4,6 +4,7 @@ extern struct platform_device pxa3xx_device_mci2;
extern struct platform_device pxa3xx_device_mci3;
extern struct platform_device pxa25x_device_udc;
extern struct platform_device pxa27x_device_udc;
+extern struct platform_device pxa3xx_device_u2d;
extern struct platform_device pxa_device_fb;
extern struct platform_device pxa_device_ffuart;
extern struct platform_device pxa_device_btuart;
diff --git a/arch/arm/mach-pxa/include/mach/pxa3xx-u2d.h b/arch/arm/mach-pxa/include/mach/pxa3xx-u2d.h
new file mode 100644
index 000000000000..9d82cb65ea56
--- /dev/null
+++ b/arch/arm/mach-pxa/include/mach/pxa3xx-u2d.h
@@ -0,0 +1,35 @@
+/*
+ * PXA3xx U2D header
+ *
+ * Copyright (C) 2010 CompuLab Ltd.
+ *
+ * Igor Grinberg <grinberg@compulab.co.il>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __PXA310_U2D__
+#define __PXA310_U2D__
+
+#include <linux/usb/ulpi.h>
+
+struct pxa3xx_u2d_platform_data {
+
+#define ULPI_SER_6PIN (1 << 0)
+#define ULPI_SER_3PIN (1 << 1)
+ unsigned int ulpi_mode;
+
+ int (*init)(struct device *);
+ void (*exit)(struct device *);
+};
+
+
+/* Start PXA3xx U2D host */
+int pxa3xx_u2d_start_hc(struct usb_bus *host);
+/* Stop PXA3xx U2D host */
+void pxa3xx_u2d_stop_hc(struct usb_bus *host);
+
+extern void pxa3xx_set_u2d_info(struct pxa3xx_u2d_platform_data *info);
+
+#endif /* __PXA310_U2D__ */
diff --git a/arch/arm/mach-pxa/pxa3xx-ulpi.c b/arch/arm/mach-pxa/pxa3xx-ulpi.c
new file mode 100644
index 000000000000..e57439e01171
--- /dev/null
+++ b/arch/arm/mach-pxa/pxa3xx-ulpi.c
@@ -0,0 +1,392 @@
+/*
+ * 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
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#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 <mach/hardware.h>
+#include <mach/regs-u2d.h>
+#include <mach/pxa3xx-u2d.h>
+
+struct pxa3xx_u2d_ulpi {
+ struct clk *clk;
+ void __iomem *mmio_base;
+
+ struct otg_transceiver *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_warning("%s: ULPI access timed out!\n", __func__);
+
+ return -ETIMEDOUT;
+}
+
+static int pxa310_ulpi_read(struct otg_transceiver *otg, u32 reg)
+{
+ int err;
+
+ if (pxa310_ulpi_get_phymode() != SYNCH) {
+ pr_warning("%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 otg_transceiver *otg, u32 val, u32 reg)
+{
+ if (pxa310_ulpi_get_phymode() != SYNCH) {
+ pr_warning("%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 otg_io_access_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 = otg_init(u2d->otg);
+ if (err) {
+ pr_err("OTG transceiver init failed");
+ return err;
+ }
+
+ err = otg_set_vbus(u2d->otg, 1);
+ if (err) {
+ pr_err("OTG transceiver VBUS set failed");
+ return err;
+ }
+
+ err = otg_set_host(u2d->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, NULL);
+ otg_set_vbus(u2d->otg, 0);
+ otg_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;
+
+ clk_enable(u2d->clk);
+
+ if (cpu_is_pxa310()) {
+ pxa310_u2d_setup_otg_hc();
+ err = pxa310_start_otg_hc(host);
+ }
+
+ return err;
+}
+
+void pxa3xx_u2d_stop_hc(struct usb_bus *host)
+{
+ if (cpu_is_pxa310())
+ pxa310_stop_otg_hc();
+
+ clk_disable(u2d->clk);
+}
+
+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(struct pxa3xx_u2d_ulpi), GFP_KERNEL);
+ if (!u2d) {
+ dev_err(&pdev->dev, "failed to allocate memory\n");
+ 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",
+ .owner = THIS_MODULE,
+ },
+ .probe = pxa3xx_u2d_probe,
+ .remove = pxa3xx_u2d_remove,
+};
+
+static int pxa3xx_u2d_ulpi_init(void)
+{
+ return platform_driver_register(&pxa3xx_u2d_ulpi_driver);
+}
+module_init(pxa3xx_u2d_ulpi_init);
+
+static void __exit pxa3xx_u2d_ulpi_exit(void)
+{
+ platform_driver_unregister(&pxa3xx_u2d_ulpi_driver);
+}
+module_exit(pxa3xx_u2d_ulpi_exit);
+
+MODULE_DESCRIPTION("PXA3xx U2D ULPI driver");
+MODULE_AUTHOR("Igor Grinberg");
+MODULE_LICENSE("GPL v2");
diff --git a/arch/arm/mach-pxa/pxa3xx.c b/arch/arm/mach-pxa/pxa3xx.c
index fa0014847c71..cf2bd26dcbab 100644
--- a/arch/arm/mach-pxa/pxa3xx.c
+++ b/arch/arm/mach-pxa/pxa3xx.c
@@ -265,7 +265,7 @@ static struct clk_lookup pxa3xx_clkregs[] = {
INIT_CLKREG(&clk_pxa3xx_i2c, "pxa2xx-i2c.0", NULL),
INIT_CLKREG(&clk_pxa3xx_udc, "pxa27x-udc", NULL),
INIT_CLKREG(&clk_pxa3xx_usbh, "pxa27x-ohci", NULL),
- INIT_CLKREG(&clk_pxa3xx_u2d, NULL, "U2DCLK"),
+ INIT_CLKREG(&clk_pxa3xx_u2d, "pxa3xx-u2d", NULL),
INIT_CLKREG(&clk_pxa3xx_keypad, "pxa27x-keypad", NULL),
INIT_CLKREG(&clk_pxa3xx_ssp1, "pxa27x-ssp.0", NULL),
INIT_CLKREG(&clk_pxa3xx_ssp2, "pxa27x-ssp.1", NULL),
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.