* [PATCH v2 0/3] Support Samsung Exynos OHCI device and driver
@ 2011-12-06 6:30 ` Jingoo Han
0 siblings, 0 replies; 12+ messages in thread
From: Jingoo Han @ 2011-12-06 6:30 UTC (permalink / raw)
To: linux-arm-kernel
Hello.
This patch series adds USB OHCI device and initial driver for Samsung
Exynos SoCs and is based from linux-samsung for-next branch.
I have tested on SMDKV310 board using EXYNOS4.
Thanks.
Jingoo Han (3) :
ARM: EXYNOS: Add USB OHCI device
ARM: EXYNOS: Add USB OHCI support to SMDKV310 board
USB: Add Samsung Exynos OHCI diver
Changes since v1:
- Replace ohci-s5p with ohci-exynos
- Check phy control
^ permalink raw reply [flat|nested] 12+ messages in thread* [PATCH v2 1/3] ARM: EXYNOS: Add USB OHCI device
2011-12-06 6:30 ` Jingoo Han
@ 2011-12-06 6:31 ` Jingoo Han
-1 siblings, 0 replies; 12+ messages in thread
From: Jingoo Han @ 2011-12-06 6:31 UTC (permalink / raw)
To: 'Kukjin Kim', linux-samsung-soc
Cc: linux-arm-kernel, linux-usb, 'Greg Kroah-Hartman',
'Alan Stern', 'Yulgon Kim', 'Jingoo Han'
This patch adds USB ohci device definition for Exynos SoCs.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
---
arch/arm/mach-exynos/Kconfig | 5 +++
arch/arm/mach-exynos/Makefile | 1 +
arch/arm/mach-exynos/dev-ohci.c | 52 +++++++++++++++++++++++++++++
arch/arm/mach-exynos/include/mach/map.h | 1 +
arch/arm/mach-exynos/include/mach/ohci.h | 21 +++++++++++
arch/arm/mach-exynos/setup-usb-phy.c | 15 ++++++++
arch/arm/plat-samsung/include/plat/devs.h | 1 +
7 files changed, 96 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-exynos/dev-ohci.c
create mode 100644 arch/arm/mach-exynos/include/mach/ohci.h
diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
index 0afcc3b..dec3ee3 100644
--- a/arch/arm/mach-exynos/Kconfig
+++ b/arch/arm/mach-exynos/Kconfig
@@ -87,6 +87,11 @@ config EXYNOS4_DEV_DWMCI
help
Compile in platform device definitions for DWMCI
+config EXYNOS4_DEV_USB_OHCI
+ bool
+ help
+ Compile in platform device definition for USB OHCI
+
config EXYNOS4_SETUP_I2C1
bool
help
diff --git a/arch/arm/mach-exynos/Makefile b/arch/arm/mach-exynos/Makefile
index 57e5296..a81a1c1 100644
--- a/arch/arm/mach-exynos/Makefile
+++ b/arch/arm/mach-exynos/Makefile
@@ -46,6 +46,7 @@ obj-$(CONFIG_EXYNOS4_DEV_AHCI) += dev-ahci.o
obj-$(CONFIG_EXYNOS4_DEV_PD) += dev-pd.o
obj-$(CONFIG_EXYNOS4_DEV_SYSMMU) += dev-sysmmu.o
obj-$(CONFIG_EXYNOS4_DEV_DWMCI) += dev-dwmci.o
+obj-$(CONFIG_EXYNOS4_DEV_USB_OHCI) += dev-ohci.o
obj-$(CONFIG_EXYNOS4_DEV_DMA) += dma.o
obj-$(CONFIG_EXYNOS4_SETUP_FIMC) += setup-fimc.o
diff --git a/arch/arm/mach-exynos/dev-ohci.c b/arch/arm/mach-exynos/dev-ohci.c
new file mode 100644
index 0000000..b8e7530
--- /dev/null
+++ b/arch/arm/mach-exynos/dev-ohci.c
@@ -0,0 +1,52 @@
+/* linux/arch/arm/mach-exynos/dev-ohci.c
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * EXYNOS - OHCI 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/dma-mapping.h>
+#include <linux/platform_device.h>
+
+#include <mach/irqs.h>
+#include <mach/map.h>
+#include <mach/ohci.h>
+
+#include <plat/devs.h>
+#include <plat/usb-phy.h>
+
+static struct resource exynos4_ohci_resource[] = {
+ [0] = DEFINE_RES_MEM(EXYNOS4_PA_OHCI, SZ_256),
+ [1] = DEFINE_RES_IRQ(IRQ_USB_HOST),
+};
+
+static u64 exynos4_ohci_dma_mask = DMA_BIT_MASK(32);
+
+struct platform_device exynos4_device_ohci = {
+ .name = "exynos-ohci",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(exynos4_ohci_resource),
+ .resource = exynos4_ohci_resource,
+ .dev = {
+ .dma_mask = &exynos4_ohci_dma_mask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ }
+};
+
+void __init exynos4_ohci_set_platdata(struct exynos4_ohci_platdata *pd)
+{
+ struct exynos4_ohci_platdata *npd;
+
+ npd = s3c_set_platdata(pd, sizeof(struct exynos4_ohci_platdata),
+ &exynos4_device_ohci);
+
+ if (!npd->phy_init)
+ npd->phy_init = s5p_usb_phy_init;
+ if (!npd->phy_exit)
+ npd->phy_exit = s5p_usb_phy_exit;
+}
diff --git a/arch/arm/mach-exynos/include/mach/map.h b/arch/arm/mach-exynos/include/mach/map.h
index 03e2c99..a9897b4 100644
--- a/arch/arm/mach-exynos/include/mach/map.h
+++ b/arch/arm/mach-exynos/include/mach/map.h
@@ -108,6 +108,7 @@
#define EXYNOS4_PA_SROMC 0x12570000
#define EXYNOS4_PA_EHCI 0x12580000
+#define EXYNOS4_PA_OHCI 0x12590000
#define EXYNOS4_PA_HSPHY 0x125B0000
#define EXYNOS4_PA_MFC 0x13400000
diff --git a/arch/arm/mach-exynos/include/mach/ohci.h b/arch/arm/mach-exynos/include/mach/ohci.h
new file mode 100644
index 0000000..c256c59
--- /dev/null
+++ b/arch/arm/mach-exynos/include/mach/ohci.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2011 Samsung Electronics Co.Ltd
+ * http://www.samsung.com/
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#ifndef __MACH_EXYNOS_OHCI_H
+#define __MACH_EXYNOS_OHCI_H
+
+struct exynos4_ohci_platdata {
+ int (*phy_init)(struct platform_device *pdev, int type);
+ int (*phy_exit)(struct platform_device *pdev, int type);
+};
+
+extern void exynos4_ohci_set_platdata(struct exynos4_ohci_platdata *pd);
+
+#endif /* __MACH_EXYNOS_OHCI_H */
diff --git a/arch/arm/mach-exynos/setup-usb-phy.c b/arch/arm/mach-exynos/setup-usb-phy.c
index 39aca04..41743d2 100644
--- a/arch/arm/mach-exynos/setup-usb-phy.c
+++ b/arch/arm/mach-exynos/setup-usb-phy.c
@@ -19,6 +19,13 @@
#include <plat/cpu.h>
#include <plat/usb-phy.h>
+static atomic_t host_usage;
+
+static int exynos4_usb_host_phy_is_on(void)
+{
+ return (readl(EXYNOS4_PHYPWR) & PHY1_STD_ANALOG_POWERDOWN) ? 0 : 1;
+}
+
static int exynos4_usb_phy1_init(struct platform_device *pdev)
{
struct clk *otg_clk;
@@ -27,6 +34,8 @@ static int exynos4_usb_phy1_init(struct platform_device *pdev)
u32 rstcon;
int err;
+ atomic_inc(&host_usage);
+
otg_clk = clk_get(&pdev->dev, "otg");
if (IS_ERR(otg_clk)) {
dev_err(&pdev->dev, "Failed to get otg clock\n");
@@ -39,6 +48,9 @@ static int exynos4_usb_phy1_init(struct platform_device *pdev)
return err;
}
+ if (exynos4_usb_host_phy_is_on())
+ return 0;
+
writel(readl(S5P_USBHOST_PHY_CONTROL) | S5P_USBHOST_PHY_ENABLE,
S5P_USBHOST_PHY_CONTROL);
@@ -95,6 +107,9 @@ static int exynos4_usb_phy1_exit(struct platform_device *pdev)
struct clk *otg_clk;
int err;
+ if (atomic_dec_return(&host_usage) > 0)
+ return 0;
+
otg_clk = clk_get(&pdev->dev, "otg");
if (IS_ERR(otg_clk)) {
dev_err(&pdev->dev, "Failed to get otg clock\n");
diff --git a/arch/arm/plat-samsung/include/plat/devs.h b/arch/arm/plat-samsung/include/plat/devs.h
index ab633c9..a2ff27e 100644
--- a/arch/arm/plat-samsung/include/plat/devs.h
+++ b/arch/arm/plat-samsung/include/plat/devs.h
@@ -129,6 +129,7 @@ extern struct platform_device exynos4_device_dwmci;
extern struct platform_device exynos4_device_i2s0;
extern struct platform_device exynos4_device_i2s1;
extern struct platform_device exynos4_device_i2s2;
+extern struct platform_device exynos4_device_ohci;
extern struct platform_device exynos4_device_pcm0;
extern struct platform_device exynos4_device_pcm1;
extern struct platform_device exynos4_device_pcm2;
--
1.7.1
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH v2 1/3] ARM: EXYNOS: Add USB OHCI device
@ 2011-12-06 6:31 ` Jingoo Han
0 siblings, 0 replies; 12+ messages in thread
From: Jingoo Han @ 2011-12-06 6:31 UTC (permalink / raw)
To: linux-arm-kernel
This patch adds USB ohci device definition for Exynos SoCs.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
---
arch/arm/mach-exynos/Kconfig | 5 +++
arch/arm/mach-exynos/Makefile | 1 +
arch/arm/mach-exynos/dev-ohci.c | 52 +++++++++++++++++++++++++++++
arch/arm/mach-exynos/include/mach/map.h | 1 +
arch/arm/mach-exynos/include/mach/ohci.h | 21 +++++++++++
arch/arm/mach-exynos/setup-usb-phy.c | 15 ++++++++
arch/arm/plat-samsung/include/plat/devs.h | 1 +
7 files changed, 96 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-exynos/dev-ohci.c
create mode 100644 arch/arm/mach-exynos/include/mach/ohci.h
diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
index 0afcc3b..dec3ee3 100644
--- a/arch/arm/mach-exynos/Kconfig
+++ b/arch/arm/mach-exynos/Kconfig
@@ -87,6 +87,11 @@ config EXYNOS4_DEV_DWMCI
help
Compile in platform device definitions for DWMCI
+config EXYNOS4_DEV_USB_OHCI
+ bool
+ help
+ Compile in platform device definition for USB OHCI
+
config EXYNOS4_SETUP_I2C1
bool
help
diff --git a/arch/arm/mach-exynos/Makefile b/arch/arm/mach-exynos/Makefile
index 57e5296..a81a1c1 100644
--- a/arch/arm/mach-exynos/Makefile
+++ b/arch/arm/mach-exynos/Makefile
@@ -46,6 +46,7 @@ obj-$(CONFIG_EXYNOS4_DEV_AHCI) += dev-ahci.o
obj-$(CONFIG_EXYNOS4_DEV_PD) += dev-pd.o
obj-$(CONFIG_EXYNOS4_DEV_SYSMMU) += dev-sysmmu.o
obj-$(CONFIG_EXYNOS4_DEV_DWMCI) += dev-dwmci.o
+obj-$(CONFIG_EXYNOS4_DEV_USB_OHCI) += dev-ohci.o
obj-$(CONFIG_EXYNOS4_DEV_DMA) += dma.o
obj-$(CONFIG_EXYNOS4_SETUP_FIMC) += setup-fimc.o
diff --git a/arch/arm/mach-exynos/dev-ohci.c b/arch/arm/mach-exynos/dev-ohci.c
new file mode 100644
index 0000000..b8e7530
--- /dev/null
+++ b/arch/arm/mach-exynos/dev-ohci.c
@@ -0,0 +1,52 @@
+/* linux/arch/arm/mach-exynos/dev-ohci.c
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * EXYNOS - OHCI 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/dma-mapping.h>
+#include <linux/platform_device.h>
+
+#include <mach/irqs.h>
+#include <mach/map.h>
+#include <mach/ohci.h>
+
+#include <plat/devs.h>
+#include <plat/usb-phy.h>
+
+static struct resource exynos4_ohci_resource[] = {
+ [0] = DEFINE_RES_MEM(EXYNOS4_PA_OHCI, SZ_256),
+ [1] = DEFINE_RES_IRQ(IRQ_USB_HOST),
+};
+
+static u64 exynos4_ohci_dma_mask = DMA_BIT_MASK(32);
+
+struct platform_device exynos4_device_ohci = {
+ .name = "exynos-ohci",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(exynos4_ohci_resource),
+ .resource = exynos4_ohci_resource,
+ .dev = {
+ .dma_mask = &exynos4_ohci_dma_mask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ }
+};
+
+void __init exynos4_ohci_set_platdata(struct exynos4_ohci_platdata *pd)
+{
+ struct exynos4_ohci_platdata *npd;
+
+ npd = s3c_set_platdata(pd, sizeof(struct exynos4_ohci_platdata),
+ &exynos4_device_ohci);
+
+ if (!npd->phy_init)
+ npd->phy_init = s5p_usb_phy_init;
+ if (!npd->phy_exit)
+ npd->phy_exit = s5p_usb_phy_exit;
+}
diff --git a/arch/arm/mach-exynos/include/mach/map.h b/arch/arm/mach-exynos/include/mach/map.h
index 03e2c99..a9897b4 100644
--- a/arch/arm/mach-exynos/include/mach/map.h
+++ b/arch/arm/mach-exynos/include/mach/map.h
@@ -108,6 +108,7 @@
#define EXYNOS4_PA_SROMC 0x12570000
#define EXYNOS4_PA_EHCI 0x12580000
+#define EXYNOS4_PA_OHCI 0x12590000
#define EXYNOS4_PA_HSPHY 0x125B0000
#define EXYNOS4_PA_MFC 0x13400000
diff --git a/arch/arm/mach-exynos/include/mach/ohci.h b/arch/arm/mach-exynos/include/mach/ohci.h
new file mode 100644
index 0000000..c256c59
--- /dev/null
+++ b/arch/arm/mach-exynos/include/mach/ohci.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2011 Samsung Electronics Co.Ltd
+ * http://www.samsung.com/
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#ifndef __MACH_EXYNOS_OHCI_H
+#define __MACH_EXYNOS_OHCI_H
+
+struct exynos4_ohci_platdata {
+ int (*phy_init)(struct platform_device *pdev, int type);
+ int (*phy_exit)(struct platform_device *pdev, int type);
+};
+
+extern void exynos4_ohci_set_platdata(struct exynos4_ohci_platdata *pd);
+
+#endif /* __MACH_EXYNOS_OHCI_H */
diff --git a/arch/arm/mach-exynos/setup-usb-phy.c b/arch/arm/mach-exynos/setup-usb-phy.c
index 39aca04..41743d2 100644
--- a/arch/arm/mach-exynos/setup-usb-phy.c
+++ b/arch/arm/mach-exynos/setup-usb-phy.c
@@ -19,6 +19,13 @@
#include <plat/cpu.h>
#include <plat/usb-phy.h>
+static atomic_t host_usage;
+
+static int exynos4_usb_host_phy_is_on(void)
+{
+ return (readl(EXYNOS4_PHYPWR) & PHY1_STD_ANALOG_POWERDOWN) ? 0 : 1;
+}
+
static int exynos4_usb_phy1_init(struct platform_device *pdev)
{
struct clk *otg_clk;
@@ -27,6 +34,8 @@ static int exynos4_usb_phy1_init(struct platform_device *pdev)
u32 rstcon;
int err;
+ atomic_inc(&host_usage);
+
otg_clk = clk_get(&pdev->dev, "otg");
if (IS_ERR(otg_clk)) {
dev_err(&pdev->dev, "Failed to get otg clock\n");
@@ -39,6 +48,9 @@ static int exynos4_usb_phy1_init(struct platform_device *pdev)
return err;
}
+ if (exynos4_usb_host_phy_is_on())
+ return 0;
+
writel(readl(S5P_USBHOST_PHY_CONTROL) | S5P_USBHOST_PHY_ENABLE,
S5P_USBHOST_PHY_CONTROL);
@@ -95,6 +107,9 @@ static int exynos4_usb_phy1_exit(struct platform_device *pdev)
struct clk *otg_clk;
int err;
+ if (atomic_dec_return(&host_usage) > 0)
+ return 0;
+
otg_clk = clk_get(&pdev->dev, "otg");
if (IS_ERR(otg_clk)) {
dev_err(&pdev->dev, "Failed to get otg clock\n");
diff --git a/arch/arm/plat-samsung/include/plat/devs.h b/arch/arm/plat-samsung/include/plat/devs.h
index ab633c9..a2ff27e 100644
--- a/arch/arm/plat-samsung/include/plat/devs.h
+++ b/arch/arm/plat-samsung/include/plat/devs.h
@@ -129,6 +129,7 @@ extern struct platform_device exynos4_device_dwmci;
extern struct platform_device exynos4_device_i2s0;
extern struct platform_device exynos4_device_i2s1;
extern struct platform_device exynos4_device_i2s2;
+extern struct platform_device exynos4_device_ohci;
extern struct platform_device exynos4_device_pcm0;
extern struct platform_device exynos4_device_pcm1;
extern struct platform_device exynos4_device_pcm2;
--
1.7.1
^ permalink raw reply related [flat|nested] 12+ messages in thread[parent not found: <001301ccb3e0$b5fec280$21fc4780$%han-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>]
* Re: [PATCH v2 1/3] ARM: EXYNOS: Add USB OHCI device
2011-12-06 6:31 ` Jingoo Han
@ 2011-12-06 9:13 ` Tushar Behera
-1 siblings, 0 replies; 12+ messages in thread
From: Tushar Behera @ 2011-12-06 9:13 UTC (permalink / raw)
To: Jingoo Han
Cc: 'Kukjin Kim', linux-samsung-soc-u79uwXL29TY76Z2rM5mHXA,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
linux-usb-u79uwXL29TY76Z2rM5mHXA, 'Greg Kroah-Hartman',
'Alan Stern', 'Yulgon Kim'
On Tuesday 06 December 2011 12:01 PM, Jingoo Han wrote:
> This patch adds USB ohci device definition for Exynos SoCs.
>
> Signed-off-by: Jingoo Han<jg1.han-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
> ---
> arch/arm/mach-exynos/Kconfig | 5 +++
> arch/arm/mach-exynos/Makefile | 1 +
> arch/arm/mach-exynos/dev-ohci.c | 52 +++++++++++++++++++++++++++++
> arch/arm/mach-exynos/include/mach/map.h | 1 +
> arch/arm/mach-exynos/include/mach/ohci.h | 21 +++++++++++
In the earlier patchset, platform_device struct for ohci was defined
within plat-samsung, and ohci.h was located in
plat-samsung/include/plat. These are still the locations where ehci
related definitions are located.
What is the reason for movement of ohci related definitions to mach folder?
--
Tushar Behera
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
^ permalink raw reply [flat|nested] 12+ messages in thread
* [PATCH v2 1/3] ARM: EXYNOS: Add USB OHCI device
@ 2011-12-06 9:13 ` Tushar Behera
0 siblings, 0 replies; 12+ messages in thread
From: Tushar Behera @ 2011-12-06 9:13 UTC (permalink / raw)
To: linux-arm-kernel
On Tuesday 06 December 2011 12:01 PM, Jingoo Han wrote:
> This patch adds USB ohci device definition for Exynos SoCs.
>
> Signed-off-by: Jingoo Han<jg1.han@samsung.com>
> ---
> arch/arm/mach-exynos/Kconfig | 5 +++
> arch/arm/mach-exynos/Makefile | 1 +
> arch/arm/mach-exynos/dev-ohci.c | 52 +++++++++++++++++++++++++++++
> arch/arm/mach-exynos/include/mach/map.h | 1 +
> arch/arm/mach-exynos/include/mach/ohci.h | 21 +++++++++++
In the earlier patchset, platform_device struct for ohci was defined
within plat-samsung, and ohci.h was located in
plat-samsung/include/plat. These are still the locations where ehci
related definitions are located.
What is the reason for movement of ohci related definitions to mach folder?
--
Tushar Behera
^ permalink raw reply [flat|nested] 12+ messages in thread
[parent not found: <4EDDDCAB.1000001-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>]
* RE: [PATCH v2 1/3] ARM: EXYNOS: Add USB OHCI device
2011-12-06 9:13 ` Tushar Behera
@ 2011-12-06 9:30 ` Jingoo Han
-1 siblings, 0 replies; 12+ messages in thread
From: Jingoo Han @ 2011-12-06 9:30 UTC (permalink / raw)
To: 'Tushar Behera'
Cc: 'Kukjin Kim', linux-samsung-soc-u79uwXL29TY76Z2rM5mHXA,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
linux-usb-u79uwXL29TY76Z2rM5mHXA, 'Greg Kroah-Hartman',
'Alan Stern', 'Yulgon Kim', 'Jingoo Han'
Tushar Behera wrote:
> Subject: Re: [PATCH v2 1/3] ARM: EXYNOS: Add USB OHCI device
>
> On Tuesday 06 December 2011 12:01 PM, Jingoo Han wrote:
> > This patch adds USB ohci device definition for Exynos SoCs.
> >
> > Signed-off-by: Jingoo Han<jg1.han-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
> > ---
> > arch/arm/mach-exynos/Kconfig | 5 +++
> > arch/arm/mach-exynos/Makefile | 1 +
> > arch/arm/mach-exynos/dev-ohci.c | 52 +++++++++++++++++++++++++++++
> > arch/arm/mach-exynos/include/mach/map.h | 1 +
> > arch/arm/mach-exynos/include/mach/ohci.h | 21 +++++++++++
>
> In the earlier patchset, platform_device struct for ohci was defined
> within plat-samsung, and ohci.h was located in
> plat-samsung/include/plat. These are still the locations where ehci
> related definitions are located.
>
> What is the reason for movement of ohci related definitions to mach folder?
I changed the ohci name from ohci-s5p to ohci-exynos, because the ohci-exynos
is used for exynos series such as Exynos4210 & Exynos4x12.
Therefore, it should be located within mach-exynos/include/mach.
Also, If this patchset is accepted, I will move Samsung ehci definitions
to mach-exynos due to the same reason.
Thanks.
>
> --
> Tushar Behera
--
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^ permalink raw reply [flat|nested] 12+ messages in thread
* [PATCH v2 1/3] ARM: EXYNOS: Add USB OHCI device
@ 2011-12-06 9:30 ` Jingoo Han
0 siblings, 0 replies; 12+ messages in thread
From: Jingoo Han @ 2011-12-06 9:30 UTC (permalink / raw)
To: linux-arm-kernel
Tushar Behera wrote:
> Subject: Re: [PATCH v2 1/3] ARM: EXYNOS: Add USB OHCI device
>
> On Tuesday 06 December 2011 12:01 PM, Jingoo Han wrote:
> > This patch adds USB ohci device definition for Exynos SoCs.
> >
> > Signed-off-by: Jingoo Han<jg1.han@samsung.com>
> > ---
> > arch/arm/mach-exynos/Kconfig | 5 +++
> > arch/arm/mach-exynos/Makefile | 1 +
> > arch/arm/mach-exynos/dev-ohci.c | 52 +++++++++++++++++++++++++++++
> > arch/arm/mach-exynos/include/mach/map.h | 1 +
> > arch/arm/mach-exynos/include/mach/ohci.h | 21 +++++++++++
>
> In the earlier patchset, platform_device struct for ohci was defined
> within plat-samsung, and ohci.h was located in
> plat-samsung/include/plat. These are still the locations where ehci
> related definitions are located.
>
> What is the reason for movement of ohci related definitions to mach folder?
I changed the ohci name from ohci-s5p to ohci-exynos, because the ohci-exynos
is used for exynos series such as Exynos4210 & Exynos4x12.
Therefore, it should be located within mach-exynos/include/mach.
Also, If this patchset is accepted, I will move Samsung ehci definitions
to mach-exynos due to the same reason.
Thanks.
>
> --
> Tushar Behera
^ permalink raw reply [flat|nested] 12+ messages in thread
* [PATCH v2 2/3] ARM: EXYNOS: Add USB OHCI support to SMDKV310 board
2011-12-06 6:30 ` Jingoo Han
@ 2011-12-06 6:32 ` Jingoo Han
-1 siblings, 0 replies; 12+ messages in thread
From: Jingoo Han @ 2011-12-06 6:32 UTC (permalink / raw)
To: 'Kukjin Kim', linux-samsung-soc
Cc: linux-arm-kernel, linux-usb, 'Greg Kroah-Hartman',
'Alan Stern', 'Yulgon Kim', 'Jingoo Han'
This patch adds USB OHCI support to SMDKV310 board.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
---
arch/arm/mach-exynos/Kconfig | 1 +
arch/arm/mach-exynos/mach-smdkv310.c | 13 +++++++++++++
2 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
index dec3ee3..bd1bb9f 100644
--- a/arch/arm/mach-exynos/Kconfig
+++ b/arch/arm/mach-exynos/Kconfig
@@ -190,6 +190,7 @@ config MACH_SMDKV310
select EXYNOS4_DEV_DMA
select EXYNOS4_DEV_PD
select SAMSUNG_DEV_PWM
+ select EXYNOS4_DEV_USB_OHCI
select EXYNOS4_DEV_SYSMMU
select EXYNOS4_SETUP_FIMD0
select EXYNOS4_SETUP_I2C1
diff --git a/arch/arm/mach-exynos/mach-smdkv310.c b/arch/arm/mach-exynos/mach-smdkv310.c
index cec2afa..25a5a40 100644
--- a/arch/arm/mach-exynos/mach-smdkv310.c
+++ b/arch/arm/mach-exynos/mach-smdkv310.c
@@ -42,6 +42,7 @@
#include <plat/clock.h>
#include <mach/map.h>
+#include <mach/ohci.h>
/* Following are default values for UCON, ULCON and UFCON UART registers */
#define SMDKV310_UCON_DEFAULT (S3C2410_UCON_TXILEVEL | \
@@ -245,6 +246,16 @@ static void __init smdkv310_ehci_init(void)
s5p_ehci_set_platdata(pdata);
}
+/* USB OHCI */
+static struct exynos4_ohci_platdata smdkv310_ohci_pdata;
+
+static void __init smdkv310_ohci_init(void)
+{
+ struct exynos4_ohci_platdata *pdata = &smdkv310_ohci_pdata;
+
+ exynos4_ohci_set_platdata(pdata);
+}
+
static struct platform_device *smdkv310_devices[] __initdata = {
&s3c_device_hsmmc0,
&s3c_device_hsmmc1,
@@ -261,6 +272,7 @@ static struct platform_device *smdkv310_devices[] __initdata = {
&s5p_device_fimc3,
&exynos4_device_ac97,
&exynos4_device_i2s0,
+ &exynos4_device_ohci,
&samsung_device_keypad,
&s5p_device_mfc,
&s5p_device_mfc_l,
@@ -363,6 +375,7 @@ static void __init smdkv310_machine_init(void)
s5p_fimd0_set_platdata(&smdkv310_lcd0_pdata);
smdkv310_ehci_init();
+ smdkv310_ohci_init();
clk_xusbxti.rate = 24000000;
platform_add_devices(smdkv310_devices, ARRAY_SIZE(smdkv310_devices));
--
1.7.1
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH v2 2/3] ARM: EXYNOS: Add USB OHCI support to SMDKV310 board
@ 2011-12-06 6:32 ` Jingoo Han
0 siblings, 0 replies; 12+ messages in thread
From: Jingoo Han @ 2011-12-06 6:32 UTC (permalink / raw)
To: linux-arm-kernel
This patch adds USB OHCI support to SMDKV310 board.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
---
arch/arm/mach-exynos/Kconfig | 1 +
arch/arm/mach-exynos/mach-smdkv310.c | 13 +++++++++++++
2 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
index dec3ee3..bd1bb9f 100644
--- a/arch/arm/mach-exynos/Kconfig
+++ b/arch/arm/mach-exynos/Kconfig
@@ -190,6 +190,7 @@ config MACH_SMDKV310
select EXYNOS4_DEV_DMA
select EXYNOS4_DEV_PD
select SAMSUNG_DEV_PWM
+ select EXYNOS4_DEV_USB_OHCI
select EXYNOS4_DEV_SYSMMU
select EXYNOS4_SETUP_FIMD0
select EXYNOS4_SETUP_I2C1
diff --git a/arch/arm/mach-exynos/mach-smdkv310.c b/arch/arm/mach-exynos/mach-smdkv310.c
index cec2afa..25a5a40 100644
--- a/arch/arm/mach-exynos/mach-smdkv310.c
+++ b/arch/arm/mach-exynos/mach-smdkv310.c
@@ -42,6 +42,7 @@
#include <plat/clock.h>
#include <mach/map.h>
+#include <mach/ohci.h>
/* Following are default values for UCON, ULCON and UFCON UART registers */
#define SMDKV310_UCON_DEFAULT (S3C2410_UCON_TXILEVEL | \
@@ -245,6 +246,16 @@ static void __init smdkv310_ehci_init(void)
s5p_ehci_set_platdata(pdata);
}
+/* USB OHCI */
+static struct exynos4_ohci_platdata smdkv310_ohci_pdata;
+
+static void __init smdkv310_ohci_init(void)
+{
+ struct exynos4_ohci_platdata *pdata = &smdkv310_ohci_pdata;
+
+ exynos4_ohci_set_platdata(pdata);
+}
+
static struct platform_device *smdkv310_devices[] __initdata = {
&s3c_device_hsmmc0,
&s3c_device_hsmmc1,
@@ -261,6 +272,7 @@ static struct platform_device *smdkv310_devices[] __initdata = {
&s5p_device_fimc3,
&exynos4_device_ac97,
&exynos4_device_i2s0,
+ &exynos4_device_ohci,
&samsung_device_keypad,
&s5p_device_mfc,
&s5p_device_mfc_l,
@@ -363,6 +375,7 @@ static void __init smdkv310_machine_init(void)
s5p_fimd0_set_platdata(&smdkv310_lcd0_pdata);
smdkv310_ehci_init();
+ smdkv310_ohci_init();
clk_xusbxti.rate = 24000000;
platform_add_devices(smdkv310_devices, ARRAY_SIZE(smdkv310_devices));
--
1.7.1
^ permalink raw reply related [flat|nested] 12+ messages in thread
* [PATCH v2 3/3] USB: Add Samsung Exynos OHCI diver
2011-12-06 6:30 ` Jingoo Han
@ 2011-12-06 6:32 ` Jingoo Han
-1 siblings, 0 replies; 12+ messages in thread
From: Jingoo Han @ 2011-12-06 6:32 UTC (permalink / raw)
To: 'Kukjin Kim', linux-samsung-soc
Cc: linux-arm-kernel, linux-usb, 'Greg Kroah-Hartman',
'Alan Stern', 'Yulgon Kim', 'Jingoo Han'
This patch adds USB OHCI driver for Samsung Exynos SoCs.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
---
drivers/usb/Kconfig | 1 +
drivers/usb/host/Kconfig | 6 +
drivers/usb/host/ohci-exynos.c | 274 ++++++++++++++++++++++++++++++++++++++++
drivers/usb/host/ohci-hcd.c | 5 +
4 files changed, 286 insertions(+), 0 deletions(-)
create mode 100644 drivers/usb/host/ohci-exynos.c
diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig
index 791f11b..75823a1 100644
--- a/drivers/usb/Kconfig
+++ b/drivers/usb/Kconfig
@@ -48,6 +48,7 @@ config USB_ARCH_HAS_OHCI
default y if ARCH_DAVINCI_DA8XX
default y if ARCH_CNS3XXX
default y if PLAT_SPEAR
+ default y if ARCH_EXYNOS
# PPC:
default y if STB03xxx
default y if PPC_MPC52xx
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 060e0e2..eea85dc 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -371,6 +371,12 @@ config USB_OHCI_SH
Enables support for the on-chip OHCI controller on the SuperH.
If you use the PCI OHCI controller, this option is not necessary.
+config USB_OHCI_EXYNOS
+ boolean "OHCI support for Samsung EXYNOS SoC Series"
+ depends on USB_OHCI_HCD && ARCH_EXYNOS
+ help
+ Enable support for the Samsung Exynos SOC's on-chip OHCI controller.
+
config USB_CNS3XXX_OHCI
bool "Cavium CNS3XXX OHCI Module"
depends on USB_OHCI_HCD && ARCH_CNS3XXX
diff --git a/drivers/usb/host/ohci-exynos.c b/drivers/usb/host/ohci-exynos.c
new file mode 100644
index 0000000..55aa35a
--- /dev/null
+++ b/drivers/usb/host/ohci-exynos.c
@@ -0,0 +1,274 @@
+/*
+ * SAMSUNG EXYNOS USB HOST OHCI Controller
+ *
+ * Copyright (C) 2011 Samsung Electronics Co.Ltd
+ * Author: Jingoo Han <jg1.han@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+
+#include <linux/clk.h>
+#include <linux/platform_device.h>
+#include <mach/ohci.h>
+#include <plat/usb-phy.h>
+
+struct exynos_ohci_hcd {
+ struct device *dev;
+ struct usb_hcd *hcd;
+ struct clk *clk;
+};
+
+static int ohci_exynos_start(struct usb_hcd *hcd)
+{
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+ int ret;
+
+ ohci_dbg(ohci, "ohci_exynos_start, ohci:%p", ohci);
+
+ ret = ohci_init(ohci);
+ if (ret < 0)
+ return ret;
+
+ ret = ohci_run(ohci);
+ if (ret < 0) {
+ err("can't start %s", hcd->self.bus_name);
+ ohci_stop(hcd);
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct hc_driver exynos_ohci_hc_driver = {
+ .description = hcd_name,
+ .product_desc = "EXYNOS OHCI Host Controller",
+ .hcd_priv_size = sizeof(struct ohci_hcd),
+
+ .irq = ohci_irq,
+ .flags = HCD_MEMORY|HCD_USB11,
+
+ .start = ohci_exynos_start,
+ .stop = ohci_stop,
+ .shutdown = ohci_shutdown,
+
+ .get_frame_number = ohci_get_frame,
+
+ .urb_enqueue = ohci_urb_enqueue,
+ .urb_dequeue = ohci_urb_dequeue,
+ .endpoint_disable = ohci_endpoint_disable,
+
+ .hub_status_data = ohci_hub_status_data,
+ .hub_control = ohci_hub_control,
+#ifdef CONFIG_PM
+ .bus_suspend = ohci_bus_suspend,
+ .bus_resume = ohci_bus_resume,
+#endif
+ .start_port_reset = ohci_start_port_reset,
+};
+
+static int __devinit exynos_ohci_probe(struct platform_device *pdev)
+{
+ struct exynos4_ohci_platdata *pdata;
+ struct exynos_ohci_hcd *exynos_ohci;
+ struct usb_hcd *hcd;
+ struct ohci_hcd *ohci;
+ struct resource *res;
+ int irq;
+ int err;
+
+ pdata = pdev->dev.platform_data;
+ if (!pdata) {
+ dev_err(&pdev->dev, "No platform data defined\n");
+ return -EINVAL;
+ }
+
+ exynos_ohci = kzalloc(sizeof(struct exynos_ohci_hcd), GFP_KERNEL);
+ if (!exynos_ohci)
+ return -ENOMEM;
+
+ exynos_ohci->dev = &pdev->dev;
+
+ hcd = usb_create_hcd(&exynos_ohci_hc_driver, &pdev->dev,
+ dev_name(&pdev->dev));
+ if (!hcd) {
+ dev_err(&pdev->dev, "Unable to create HCD\n");
+ err = -ENOMEM;
+ goto fail_hcd;
+ }
+
+ exynos_ohci->hcd = hcd;
+ exynos_ohci->clk = clk_get(&pdev->dev, "usbhost");
+
+ if (IS_ERR(exynos_ohci->clk)) {
+ dev_err(&pdev->dev, "Failed to get usbhost clock\n");
+ err = PTR_ERR(exynos_ohci->clk);
+ goto fail_clk;
+ }
+
+ err = clk_enable(exynos_ohci->clk);
+ if (err)
+ goto fail_clken;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "Failed to get I/O memory\n");
+ err = -ENXIO;
+ goto fail_io;
+ }
+
+ hcd->rsrc_start = res->start;
+ hcd->rsrc_len = resource_size(res);
+ hcd->regs = ioremap(res->start, resource_size(res));
+ if (!hcd->regs) {
+ dev_err(&pdev->dev, "Failed to remap I/O memory\n");
+ err = -ENOMEM;
+ goto fail_io;
+ }
+
+ irq = platform_get_irq(pdev, 0);
+ if (!irq) {
+ dev_err(&pdev->dev, "Failed to get IRQ\n");
+ err = -ENODEV;
+ goto fail;
+ }
+
+ if (pdata->phy_init)
+ pdata->phy_init(pdev, S5P_USB_PHY_HOST);
+
+ ohci = hcd_to_ohci(hcd);
+ ohci_hcd_init(ohci);
+
+ err = usb_add_hcd(hcd, irq, IRQF_SHARED);
+ if (err) {
+ dev_err(&pdev->dev, "Failed to add USB HCD\n");
+ goto fail;
+ }
+
+ platform_set_drvdata(pdev, exynos_ohci);
+
+ return 0;
+
+fail:
+ iounmap(hcd->regs);
+fail_io:
+ clk_disable(exynos_ohci->clk);
+fail_clken:
+ clk_put(exynos_ohci->clk);
+fail_clk:
+ usb_put_hcd(hcd);
+fail_hcd:
+ kfree(exynos_ohci);
+ return err;
+}
+
+static int __devexit exynos_ohci_remove(struct platform_device *pdev)
+{
+ struct exynos4_ohci_platdata *pdata = pdev->dev.platform_data;
+ struct exynos_ohci_hcd *exynos_ohci = platform_get_drvdata(pdev);
+ struct usb_hcd *hcd = exynos_ohci->hcd;
+
+ usb_remove_hcd(hcd);
+
+ if (pdata && pdata->phy_exit)
+ pdata->phy_exit(pdev, S5P_USB_PHY_HOST);
+
+ iounmap(hcd->regs);
+
+ clk_disable(exynos_ohci->clk);
+ clk_put(exynos_ohci->clk);
+
+ usb_put_hcd(hcd);
+ kfree(exynos_ohci);
+
+ return 0;
+}
+
+static void exynos_ohci_shutdown(struct platform_device *pdev)
+{
+ struct exynos_ohci_hcd *exynos_ohci = platform_get_drvdata(pdev);
+ struct usb_hcd *hcd = exynos_ohci->hcd;
+
+ if (hcd->driver->shutdown)
+ hcd->driver->shutdown(hcd);
+}
+
+#ifdef CONFIG_PM
+static int exynos_ohci_suspend(struct device *dev)
+{
+ struct exynos_ohci_hcd *exynos_ohci = dev_get_drvdata(dev);
+ struct usb_hcd *hcd = exynos_ohci->hcd;
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+ struct platform_device *pdev = to_platform_device(dev);
+ struct exynos4_ohci_platdata *pdata = pdev->dev.platform_data;
+ unsigned long flags;
+ int rc = 0;
+
+ /*
+ * Root hub was already suspended. Disable irq emission and
+ * mark HW unaccessible, bail out if RH has been resumed. Use
+ * the spinlock to properly synchronize with possible pending
+ * RH suspend or resume activity.
+ *
+ * This is still racy as hcd->state is manipulated outside of
+ * any locks =P But that will be a different fix.
+ */
+ spin_lock_irqsave(&ohci->lock, flags);
+ if (hcd->state != HC_STATE_SUSPENDED && hcd->state != HC_STATE_HALT) {
+ rc = -EINVAL;
+ goto fail;
+ }
+
+ clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
+
+ if (pdata && pdata->phy_exit)
+ pdata->phy_exit(pdev, S5P_USB_PHY_HOST);
+fail:
+ spin_unlock_irqrestore(&ohci->lock, flags);
+
+ return rc;
+}
+
+static int exynos_ohci_resume(struct device *dev)
+{
+ struct exynos_ohci_hcd *exynos_ohci = dev_get_drvdata(dev);
+ struct usb_hcd *hcd = exynos_ohci->hcd;
+ struct platform_device *pdev = to_platform_device(dev);
+ struct exynos4_ohci_platdata *pdata = pdev->dev.platform_data;
+
+ if (pdata && pdata->phy_init)
+ pdata->phy_init(pdev, S5P_USB_PHY_HOST);
+
+ /* Mark hardware accessible again as we are out of D3 state by now */
+ set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
+
+ ohci_finish_controller_resume(hcd);
+
+ return 0;
+}
+#else
+#define exynos_ohci_suspend NULL
+#define exynos_ohci_resume NULL
+#endif
+
+static const struct dev_pm_ops exynos_ohci_pm_ops = {
+ .suspend = exynos_ohci_suspend,
+ .resume = exynos_ohci_resume,
+};
+
+static struct platform_driver exynos_ohci_driver = {
+ .probe = exynos_ohci_probe,
+ .remove = __devexit_p(exynos_ohci_remove),
+ .shutdown = exynos_ohci_shutdown,
+ .driver = {
+ .name = "exynos-ohci",
+ .owner = THIS_MODULE,
+ .pm = &exynos_ohci_pm_ops,
+ }
+};
+
+MODULE_ALIAS("platform:exynos-ohci");
+MODULE_AUTHOR("Jingoo Han <jg1.han@samsung.com>");
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index b263919..a1006ff 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -1005,6 +1005,11 @@ MODULE_LICENSE ("GPL");
#define PLATFORM_DRIVER ohci_hcd_s3c2410_driver
#endif
+#ifdef CONFIG_USB_OHCI_EXYNOS
+#include "ohci-exynos.c"
+#define PLATFORM_DRIVER exynos_ohci_driver
+#endif
+
#ifdef CONFIG_USB_OHCI_HCD_OMAP1
#include "ohci-omap.c"
#define OMAP1_PLATFORM_DRIVER ohci_hcd_omap_driver
--
1.7.1
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH v2 3/3] USB: Add Samsung Exynos OHCI diver
@ 2011-12-06 6:32 ` Jingoo Han
0 siblings, 0 replies; 12+ messages in thread
From: Jingoo Han @ 2011-12-06 6:32 UTC (permalink / raw)
To: linux-arm-kernel
This patch adds USB OHCI driver for Samsung Exynos SoCs.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
---
drivers/usb/Kconfig | 1 +
drivers/usb/host/Kconfig | 6 +
drivers/usb/host/ohci-exynos.c | 274 ++++++++++++++++++++++++++++++++++++++++
drivers/usb/host/ohci-hcd.c | 5 +
4 files changed, 286 insertions(+), 0 deletions(-)
create mode 100644 drivers/usb/host/ohci-exynos.c
diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig
index 791f11b..75823a1 100644
--- a/drivers/usb/Kconfig
+++ b/drivers/usb/Kconfig
@@ -48,6 +48,7 @@ config USB_ARCH_HAS_OHCI
default y if ARCH_DAVINCI_DA8XX
default y if ARCH_CNS3XXX
default y if PLAT_SPEAR
+ default y if ARCH_EXYNOS
# PPC:
default y if STB03xxx
default y if PPC_MPC52xx
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 060e0e2..eea85dc 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -371,6 +371,12 @@ config USB_OHCI_SH
Enables support for the on-chip OHCI controller on the SuperH.
If you use the PCI OHCI controller, this option is not necessary.
+config USB_OHCI_EXYNOS
+ boolean "OHCI support for Samsung EXYNOS SoC Series"
+ depends on USB_OHCI_HCD && ARCH_EXYNOS
+ help
+ Enable support for the Samsung Exynos SOC's on-chip OHCI controller.
+
config USB_CNS3XXX_OHCI
bool "Cavium CNS3XXX OHCI Module"
depends on USB_OHCI_HCD && ARCH_CNS3XXX
diff --git a/drivers/usb/host/ohci-exynos.c b/drivers/usb/host/ohci-exynos.c
new file mode 100644
index 0000000..55aa35a
--- /dev/null
+++ b/drivers/usb/host/ohci-exynos.c
@@ -0,0 +1,274 @@
+/*
+ * SAMSUNG EXYNOS USB HOST OHCI Controller
+ *
+ * Copyright (C) 2011 Samsung Electronics Co.Ltd
+ * Author: Jingoo Han <jg1.han@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+
+#include <linux/clk.h>
+#include <linux/platform_device.h>
+#include <mach/ohci.h>
+#include <plat/usb-phy.h>
+
+struct exynos_ohci_hcd {
+ struct device *dev;
+ struct usb_hcd *hcd;
+ struct clk *clk;
+};
+
+static int ohci_exynos_start(struct usb_hcd *hcd)
+{
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+ int ret;
+
+ ohci_dbg(ohci, "ohci_exynos_start, ohci:%p", ohci);
+
+ ret = ohci_init(ohci);
+ if (ret < 0)
+ return ret;
+
+ ret = ohci_run(ohci);
+ if (ret < 0) {
+ err("can't start %s", hcd->self.bus_name);
+ ohci_stop(hcd);
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct hc_driver exynos_ohci_hc_driver = {
+ .description = hcd_name,
+ .product_desc = "EXYNOS OHCI Host Controller",
+ .hcd_priv_size = sizeof(struct ohci_hcd),
+
+ .irq = ohci_irq,
+ .flags = HCD_MEMORY|HCD_USB11,
+
+ .start = ohci_exynos_start,
+ .stop = ohci_stop,
+ .shutdown = ohci_shutdown,
+
+ .get_frame_number = ohci_get_frame,
+
+ .urb_enqueue = ohci_urb_enqueue,
+ .urb_dequeue = ohci_urb_dequeue,
+ .endpoint_disable = ohci_endpoint_disable,
+
+ .hub_status_data = ohci_hub_status_data,
+ .hub_control = ohci_hub_control,
+#ifdef CONFIG_PM
+ .bus_suspend = ohci_bus_suspend,
+ .bus_resume = ohci_bus_resume,
+#endif
+ .start_port_reset = ohci_start_port_reset,
+};
+
+static int __devinit exynos_ohci_probe(struct platform_device *pdev)
+{
+ struct exynos4_ohci_platdata *pdata;
+ struct exynos_ohci_hcd *exynos_ohci;
+ struct usb_hcd *hcd;
+ struct ohci_hcd *ohci;
+ struct resource *res;
+ int irq;
+ int err;
+
+ pdata = pdev->dev.platform_data;
+ if (!pdata) {
+ dev_err(&pdev->dev, "No platform data defined\n");
+ return -EINVAL;
+ }
+
+ exynos_ohci = kzalloc(sizeof(struct exynos_ohci_hcd), GFP_KERNEL);
+ if (!exynos_ohci)
+ return -ENOMEM;
+
+ exynos_ohci->dev = &pdev->dev;
+
+ hcd = usb_create_hcd(&exynos_ohci_hc_driver, &pdev->dev,
+ dev_name(&pdev->dev));
+ if (!hcd) {
+ dev_err(&pdev->dev, "Unable to create HCD\n");
+ err = -ENOMEM;
+ goto fail_hcd;
+ }
+
+ exynos_ohci->hcd = hcd;
+ exynos_ohci->clk = clk_get(&pdev->dev, "usbhost");
+
+ if (IS_ERR(exynos_ohci->clk)) {
+ dev_err(&pdev->dev, "Failed to get usbhost clock\n");
+ err = PTR_ERR(exynos_ohci->clk);
+ goto fail_clk;
+ }
+
+ err = clk_enable(exynos_ohci->clk);
+ if (err)
+ goto fail_clken;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "Failed to get I/O memory\n");
+ err = -ENXIO;
+ goto fail_io;
+ }
+
+ hcd->rsrc_start = res->start;
+ hcd->rsrc_len = resource_size(res);
+ hcd->regs = ioremap(res->start, resource_size(res));
+ if (!hcd->regs) {
+ dev_err(&pdev->dev, "Failed to remap I/O memory\n");
+ err = -ENOMEM;
+ goto fail_io;
+ }
+
+ irq = platform_get_irq(pdev, 0);
+ if (!irq) {
+ dev_err(&pdev->dev, "Failed to get IRQ\n");
+ err = -ENODEV;
+ goto fail;
+ }
+
+ if (pdata->phy_init)
+ pdata->phy_init(pdev, S5P_USB_PHY_HOST);
+
+ ohci = hcd_to_ohci(hcd);
+ ohci_hcd_init(ohci);
+
+ err = usb_add_hcd(hcd, irq, IRQF_SHARED);
+ if (err) {
+ dev_err(&pdev->dev, "Failed to add USB HCD\n");
+ goto fail;
+ }
+
+ platform_set_drvdata(pdev, exynos_ohci);
+
+ return 0;
+
+fail:
+ iounmap(hcd->regs);
+fail_io:
+ clk_disable(exynos_ohci->clk);
+fail_clken:
+ clk_put(exynos_ohci->clk);
+fail_clk:
+ usb_put_hcd(hcd);
+fail_hcd:
+ kfree(exynos_ohci);
+ return err;
+}
+
+static int __devexit exynos_ohci_remove(struct platform_device *pdev)
+{
+ struct exynos4_ohci_platdata *pdata = pdev->dev.platform_data;
+ struct exynos_ohci_hcd *exynos_ohci = platform_get_drvdata(pdev);
+ struct usb_hcd *hcd = exynos_ohci->hcd;
+
+ usb_remove_hcd(hcd);
+
+ if (pdata && pdata->phy_exit)
+ pdata->phy_exit(pdev, S5P_USB_PHY_HOST);
+
+ iounmap(hcd->regs);
+
+ clk_disable(exynos_ohci->clk);
+ clk_put(exynos_ohci->clk);
+
+ usb_put_hcd(hcd);
+ kfree(exynos_ohci);
+
+ return 0;
+}
+
+static void exynos_ohci_shutdown(struct platform_device *pdev)
+{
+ struct exynos_ohci_hcd *exynos_ohci = platform_get_drvdata(pdev);
+ struct usb_hcd *hcd = exynos_ohci->hcd;
+
+ if (hcd->driver->shutdown)
+ hcd->driver->shutdown(hcd);
+}
+
+#ifdef CONFIG_PM
+static int exynos_ohci_suspend(struct device *dev)
+{
+ struct exynos_ohci_hcd *exynos_ohci = dev_get_drvdata(dev);
+ struct usb_hcd *hcd = exynos_ohci->hcd;
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+ struct platform_device *pdev = to_platform_device(dev);
+ struct exynos4_ohci_platdata *pdata = pdev->dev.platform_data;
+ unsigned long flags;
+ int rc = 0;
+
+ /*
+ * Root hub was already suspended. Disable irq emission and
+ * mark HW unaccessible, bail out if RH has been resumed. Use
+ * the spinlock to properly synchronize with possible pending
+ * RH suspend or resume activity.
+ *
+ * This is still racy as hcd->state is manipulated outside of
+ * any locks =P But that will be a different fix.
+ */
+ spin_lock_irqsave(&ohci->lock, flags);
+ if (hcd->state != HC_STATE_SUSPENDED && hcd->state != HC_STATE_HALT) {
+ rc = -EINVAL;
+ goto fail;
+ }
+
+ clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
+
+ if (pdata && pdata->phy_exit)
+ pdata->phy_exit(pdev, S5P_USB_PHY_HOST);
+fail:
+ spin_unlock_irqrestore(&ohci->lock, flags);
+
+ return rc;
+}
+
+static int exynos_ohci_resume(struct device *dev)
+{
+ struct exynos_ohci_hcd *exynos_ohci = dev_get_drvdata(dev);
+ struct usb_hcd *hcd = exynos_ohci->hcd;
+ struct platform_device *pdev = to_platform_device(dev);
+ struct exynos4_ohci_platdata *pdata = pdev->dev.platform_data;
+
+ if (pdata && pdata->phy_init)
+ pdata->phy_init(pdev, S5P_USB_PHY_HOST);
+
+ /* Mark hardware accessible again as we are out of D3 state by now */
+ set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
+
+ ohci_finish_controller_resume(hcd);
+
+ return 0;
+}
+#else
+#define exynos_ohci_suspend NULL
+#define exynos_ohci_resume NULL
+#endif
+
+static const struct dev_pm_ops exynos_ohci_pm_ops = {
+ .suspend = exynos_ohci_suspend,
+ .resume = exynos_ohci_resume,
+};
+
+static struct platform_driver exynos_ohci_driver = {
+ .probe = exynos_ohci_probe,
+ .remove = __devexit_p(exynos_ohci_remove),
+ .shutdown = exynos_ohci_shutdown,
+ .driver = {
+ .name = "exynos-ohci",
+ .owner = THIS_MODULE,
+ .pm = &exynos_ohci_pm_ops,
+ }
+};
+
+MODULE_ALIAS("platform:exynos-ohci");
+MODULE_AUTHOR("Jingoo Han <jg1.han@samsung.com>");
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index b263919..a1006ff 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -1005,6 +1005,11 @@ MODULE_LICENSE ("GPL");
#define PLATFORM_DRIVER ohci_hcd_s3c2410_driver
#endif
+#ifdef CONFIG_USB_OHCI_EXYNOS
+#include "ohci-exynos.c"
+#define PLATFORM_DRIVER exynos_ohci_driver
+#endif
+
#ifdef CONFIG_USB_OHCI_HCD_OMAP1
#include "ohci-omap.c"
#define OMAP1_PLATFORM_DRIVER ohci_hcd_omap_driver
--
1.7.1
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