Support host and device usb modes for the chipidea controller in AR933x.
Changes since last version of the patch:
* conditionally include ci13xxx_ar933x.c for compilation
* removed __devinit/__devexit/__devexit_p()
* use a dynamically allocated structure for ci13xxx_platform_data
* move controller mode check to platform usb registration
* pick a different name for the ar933x chipidea driver
* use a correct MODE_ALIAS name
* use the dr_mode changes in "[PATCH 0/3] otg-for-v3.10-v2:
separate phy code and add DT helper"
Signed-off-by: Svetoslav Neykov <svetoslav@xxxxxxxxxxx>
---
arch/mips/ath79/dev-usb.c | 50 +++++++++++++
arch/mips/include/asm/mach-ath79/ar71xx_regs.h | 3 +
.../asm/mach-ath79/ar933x_chipidea_platform.h | 18 +++++
drivers/usb/chipidea/Makefile | 5 ++
drivers/usb/chipidea/ci13xxx_ar933x.c | 75 ++++++++++++++++++++
5 files changed, 151 insertions(+)
create mode 100644 arch/mips/include/asm/mach-ath79/ar933x_chipidea_platform.h
create mode 100644 drivers/usb/chipidea/ci13xxx_ar933x.c
diff --git a/arch/mips/ath79/dev-usb.c b/arch/mips/ath79/dev-usb.c
index bd2bc10..0c285d9 100644
--- a/arch/mips/ath79/dev-usb.c
+++ b/arch/mips/ath79/dev-usb.c
@@ -19,9 +19,11 @@
#include <linux/platform_device.h>
#include <linux/usb/ehci_pdriver.h>
#include <linux/usb/ohci_pdriver.h>
+#include <linux/usb/otg.h>
#include <asm/mach-ath79/ath79.h>
#include <asm/mach-ath79/ar71xx_regs.h>
+#include <asm/mach-ath79/ar933x_chipidea_platform.h>
#include "common.h"
#include "dev-usb.h"
@@ -68,6 +70,22 @@ static struct platform_device ath79_ehci_device = {
},
};
+static struct resource ar933x_chipidea_resources[2];
+
+static struct ar933x_chipidea_platform_data ar933x_chipidea_data = {
+};
+
+static struct platform_device ar933x_chipidea_device = {
+ .name = "ar933x-chipidea",
+ .id = -1,
+ .resource = ar933x_chipidea_resources,
+ .num_resources = ARRAY_SIZE(ar933x_chipidea_resources),
+ .dev = {
+ .dma_mask = &ath79_ehci_dmamask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ },
+};
+
static void __init ath79_usb_init_resource(struct resource res[2],
unsigned long base,
unsigned long size,
@@ -174,8 +192,32 @@ static void __init ar913x_usb_setup(void)
platform_device_register(&ath79_ehci_device);
}
+static void __init ar933x_usb_setup_ctrl_config(void)
+{
+ void __iomem *usb_ctrl_base, *usb_config_reg;
+ u32 usb_config;
+
+ usb_ctrl_base = ioremap(AR71XX_USB_CTRL_BASE, AR71XX_USB_CTRL_SIZE);
+ usb_config_reg = usb_ctrl_base + AR71XX_USB_CTRL_REG_CONFIG;
+ usb_config = __raw_readl(usb_config_reg);
+ usb_config &= ~AR933X_USB_CONFIG_HOST_ONLY;
+ __raw_writel(usb_config, usb_config_reg);
+ iounmap(usb_ctrl_base);
+}
+
static void __init ar933x_usb_setup(void)
{
+ u32 bootstrap;
+ enum usb_dr_mode dr_mode;
+
+ bootstrap = ath79_reset_rr(AR933X_RESET_REG_BOOTSTRAP);
+ if (bootstrap & AR933X_BOOTSTRAP_USB_MODE_HOST) {
+ dr_mode = USB_DR_MODE_HOST;
+ } else {
+ dr_mode = USB_DR_MODE_PERIPHERAL;
+ ar933x_usb_setup_ctrl_config();
+ }
+
ath79_device_reset_set(AR933X_RESET_USBSUS_OVERRIDE);
mdelay(10);
@@ -187,8 +229,16 @@ static void __init ar933x_usb_setup(void)
ath79_usb_init_resource(ath79_ehci_resources, AR933X_EHCI_BASE,
AR933X_EHCI_SIZE, ATH79_CPU_IRQ_USB);
+
ath79_ehci_device.dev.platform_data = &ath79_ehci_pdata_v2;
platform_device_register(&ath79_ehci_device);
+
+ ath79_usb_init_resource(ar933x_chipidea_resources, AR933X_EHCI_BASE,
+ AR933X_EHCI_SIZE, ATH79_CPU_IRQ_USB);
+
+ ar933x_chipidea_data.dr_mode = dr_mode;
+ ar933x_chipidea_device.dev.platform_data = &ar933x_chipidea_data;
+ platform_device_register(&ar933x_chipidea_device);
}
static void __init ar934x_usb_setup(void)
diff --git a/arch/mips/include/asm/mach-ath79/ar71xx_regs.h b/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
index a5e0f17..13eb2d9 100644
--- a/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
+++ b/arch/mips/include/asm/mach-ath79/ar71xx_regs.h
@@ -297,6 +297,7 @@
#define AR934X_RESET_USB_PHY BIT(4)
#define AR934X_RESET_USBSUS_OVERRIDE BIT(3)
+#define AR933X_BOOTSTRAP_USB_MODE_HOST BIT(3)
#define AR933X_BOOTSTRAP_REF_CLK_40 BIT(0)
#define AR934X_BOOTSTRAP_SW_OPTION8 BIT(23)
@@ -315,6 +316,8 @@
#define AR934X_BOOTSTRAP_SDRAM_DISABLED BIT(1)
#define AR934X_BOOTSTRAP_DDR1 BIT(0)
+#define AR933X_USB_CONFIG_HOST_ONLY BIT(8)
+
#define AR934X_PCIE_WMAC_INT_WMAC_MISC BIT(0)
#define AR934X_PCIE_WMAC_INT_WMAC_TX BIT(1)
#define AR934X_PCIE_WMAC_INT_WMAC_RXLP BIT(2)
diff --git a/arch/mips/include/asm/mach-ath79/ar933x_chipidea_platform.h b/arch/mips/include/asm/mach-ath79/ar933x_chipidea_platform.h
new file mode 100644
index 0000000..2b0ee30
--- /dev/null
+++ b/arch/mips/include/asm/mach-ath79/ar933x_chipidea_platform.h
@@ -0,0 +1,18 @@
+/*
+ * Platform data definition for Atheros AR933X Chipidea USB controller
+ *
+ * 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 _AR933X_CHIPIDEA_PLATFORM_H
+#define _AR933X_CHIPIDEA_PLATFORM_H
+
+#include <linux/usb/otg.h>
+
+struct ar933x_chipidea_platform_data {
+ enum usb_dr_mode dr_mode;
+};
+
+#endif /* _AR933X_UART_PLATFORM_H */
diff --git a/drivers/usb/chipidea/Makefile b/drivers/usb/chipidea/Makefile
index 146ecd7..aae70a4 100644
--- a/drivers/usb/chipidea/Makefile
+++ b/drivers/usb/chipidea/Makefile
@@ -19,3 +19,8 @@ endif
ifneq ($(CONFIG_OF_DEVICE),)
obj-$(CONFIG_USB_CHIPIDEA) += ci13xxx_imx.o usbmisc_imx.o
endif
+
+ifneq ($(CONFIG_SOC_AR933X),)
+ obj-$(CONFIG_USB_CHIPIDEA) += ci13xxx_ar933x.o
+endif
+
diff --git a/drivers/usb/chipidea/ci13xxx_ar933x.c b/drivers/usb/chipidea/ci13xxx_ar933x.c
new file mode 100644
index 0000000..4ba977a
--- /dev/null
+++ b/drivers/usb/chipidea/ci13xxx_ar933x.c
@@ -0,0 +1,75 @@
+/* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/usb/ulpi.h>
+#include <linux/usb/gadget.h>
+#include <linux/usb/chipidea.h>
+#include <asm/mach-ath79/ath79.h>
+#include <asm/mach-ath79/ar71xx_regs.h>
+#include <asm/mach-ath79/ar933x_chipidea_platform.h>
+
+#include "ci.h"
+
+static int ci13xxx_ar933x_probe(struct platform_device *pdev)
+{
+ u32 bootstrap;
+ struct ar933x_chipidea_platform_data *ar933x_chipidea_data;
+ struct ci13xxx_platform_data *pdata;
+ struct platform_device *plat_ci;
+
+ dev_dbg(&pdev->dev, "ci13xxx_ar933x_probe\n");
+
+ ar933x_chipidea_data = pdev->dev.platform_data;
+
+ pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata) {
+ dev_err(&pdev->dev, "Failed to allocate ci13xxx-ar933x pdata!\n");
+ return -ENOMEM;
+ }
+
+ pdata->name = "ci13xxx_ar933x";
+ pdata->capoffset = DEF_CAPOFFSET;
+ pdata->dr_mode = ar933x_chipidea_data->dr_mode;
+ plat_ci = ci13xxx_add_device(&pdev->dev,
+ pdev->resource, pdev->num_resources,
+ pdata);
+ if (IS_ERR(plat_ci)) {
+ dev_err(&pdev->dev, "ci13xxx_add_device failed!\n");
+ return PTR_ERR(plat_ci);
+ }
+
+ platform_set_drvdata(pdev, plat_ci);
+
+ pm_runtime_no_callbacks(&pdev->dev);
+ pm_runtime_enable(&pdev->dev);
+
+ return 0;
+}
+
+static int ci13xxx_ar933x_remove(struct platform_device *pdev)
+{
+ struct platform_device *plat_ci = platform_get_drvdata(pdev);
+
+ pm_runtime_disable(&pdev->dev);
+ ci13xxx_remove_device(plat_ci);
+
+ return 0;
+}
+
+static struct platform_driver ci13xxx_ar933x_driver = {
+ .probe = ci13xxx_ar933x_probe,
+ .remove = ci13xxx_ar933x_remove,
+ .driver = { .name = "ar933x-chipidea", },
+};
+
+module_platform_driver(ci13xxx_ar933x_driver);
+
+MODULE_ALIAS("platform:ci13xxx_ar933x_driver");
+MODULE_LICENSE("GPL v2");
--
1.7.9.5
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