From: Mac Lin <mkl0301@xxxxxxxxx>
This patch add plateform_device for EHCI and OHCI controller on CNS3XXX. Power
reference count (usb_pwr_ref) is used to control enabling and disabling the
single clock control for both EHCI and OHCI controller.
It also remove EHCI/OHCI unused virtual address definitions.
Signed-off-by: Mac Lin <mkl0301@xxxxxxxxx>
---
arch/arm/mach-cns3xxx/cns3420vb.c | 50 ++++++++++++++++++++++++++
arch/arm/mach-cns3xxx/include/mach/cns3xxx.h | 2 -
arch/arm/mach-cns3xxx/include/mach/pm.h | 2 +
arch/arm/mach-cns3xxx/pm.c | 4 ++
4 files changed, 56 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-cns3xxx/cns3420vb.c b/arch/arm/mach-cns3xxx/cns3420vb.c
index 90fe9ab..4824223 100644
--- a/arch/arm/mach-cns3xxx/cns3420vb.c
+++ b/arch/arm/mach-cns3xxx/cns3420vb.c
@@ -107,11 +107,61 @@ static void __init cns3420_early_serial_setup(void)
#endif
}
+static struct resource cns3xxx_usb_ehci_resource[] = {
+ [0] = {
+ .start = CNS3XXX_USB_BASE,
+ .end = CNS3XXX_USB_BASE + SZ_16M - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_CNS3XXX_USB_EHCI,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static u64 cns3xxx_usb_dma_mask = 0xffffffffULL;
+
+static struct platform_device cns3xxx_usb_ehci_device = {
+ .name = "cns3xxx-ehci",
+ .num_resources = ARRAY_SIZE(cns3xxx_usb_ehci_resource),
+ .resource = cns3xxx_usb_ehci_resource,
+ .dev = {
+ .dma_mask = &cns3xxx_usb_dma_mask,
+ .coherent_dma_mask = 0xffffffffULL,
+ },
+};
+
+static struct resource cns3xxx_usb_ohci_resource[] = {
+ [0] = {
+ .start = CNS3XXX_USB_OHCI_BASE,
+ .end = CNS3XXX_USB_OHCI_BASE + SZ_16M - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_CNS3XXX_USB_OHCI,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static u64 cns3xxx_usb_ohci_dma_mask = 0xffffffffULL;
+static struct platform_device cns3xxx_usb_ohci_device = {
+ .name = "cns3xxx-ohci",
+ .dev = {
+ .dma_mask = &cns3xxx_usb_ohci_dma_mask,
+ .coherent_dma_mask = 0xffffffffULL,
+ },
+ .num_resources = 2,
+ .resource = cns3xxx_usb_ohci_resource,
+};
+
+
/*
* Initialization
*/
static struct platform_device *cns3420_pdevs[] __initdata = {
&cns3420_nor_pdev,
+ &cns3xxx_usb_ehci_device,
+ &cns3xxx_usb_ohci_device,
};
static void __init cns3420_init(void)
diff --git a/arch/arm/mach-cns3xxx/include/mach/cns3xxx.h b/arch/arm/mach-cns3xxx/include/mach/cns3xxx.h
index 6dbce13..191c8e5 100644
--- a/arch/arm/mach-cns3xxx/include/mach/cns3xxx.h
+++ b/arch/arm/mach-cns3xxx/include/mach/cns3xxx.h
@@ -165,7 +165,6 @@
#define CNS3XXX_USBOTG_BASE_VIRT 0xFFF15000
#define CNS3XXX_USB_BASE 0x82000000 /* USB Host Control */
-#define CNS3XXX_USB_BASE_VIRT 0xFFF16000
#define CNS3XXX_SATA2_BASE 0x83000000 /* SATA */
#define CNS3XXX_SATA2_SIZE SZ_16M
@@ -184,7 +183,6 @@
#define CNS3XXX_2DG_BASE_VIRT 0xFFF1B000
#define CNS3XXX_USB_OHCI_BASE 0x88000000 /* USB OHCI */
-#define CNS3XXX_USB_OHCI_BASE_VIRT 0xFFF1C000
#define CNS3XXX_L2C_BASE 0x92000000 /* L2 Cache Control */
#define CNS3XXX_L2C_BASE_VIRT 0xFFF27000
diff --git a/arch/arm/mach-cns3xxx/include/mach/pm.h b/arch/arm/mach-cns3xxx/include/mach/pm.h
index 102617b..ddbe7d7 100644
--- a/arch/arm/mach-cns3xxx/include/mach/pm.h
+++ b/arch/arm/mach-cns3xxx/include/mach/pm.h
@@ -16,4 +16,6 @@ void cns3xxx_pwr_clk_dis(unsigned int block);
void cns3xxx_pwr_power_up(unsigned int block);
void cns3xxx_pwr_power_down(unsigned int block);
+extern atomic_t usb_pwr_ref;
+
#endif /* __CNS3XXX_PM_H */
diff --git a/arch/arm/mach-cns3xxx/pm.c b/arch/arm/mach-cns3xxx/pm.c
index a4495e6..784af93 100644
--- a/arch/arm/mach-cns3xxx/pm.c
+++ b/arch/arm/mach-cns3xxx/pm.c
@@ -10,6 +10,7 @@
#include <linux/module.h>
#include <linux/io.h>
#include <linux/delay.h>
+#include <asm/atomic.h>
#include <mach/system.h>
#include <mach/cns3xxx.h>
@@ -116,3 +117,6 @@ int cns3xxx_cpu_clock(void)
return cpu;
}
EXPORT_SYMBOL(cns3xxx_cpu_clock);
+
+atomic_t usb_pwr_ref = ATOMIC_INIT(0);
+EXPORT_SYMBOL(usb_pwr_ref);
--
1.7.3
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