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authorMac Lin <mkl0301@gmail.com>2010-11-23 00:32:44 +0800
committerAnton Vorontsov <cbouatmailru@gmail.com>2010-11-26 21:10:51 +0300
commitcf36797f35676dafae9d44484391ac7f56b2485a (patch)
treecd2b6a20e50a0ffb96411ceb0d9b0906e2faf674
parent38e64ba0f13918d11e50bbd5bb775781ccd6439d (diff)
downloadblackbird-op-linux-cf36797f35676dafae9d44484391ac7f56b2485a.tar.gz
blackbird-op-linux-cf36797f35676dafae9d44484391ac7f56b2485a.zip
ARM: cns3xxx: Add architecture definition for EHCI/OHCI controller
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 removes EHCI/OHCI unused virtual address definitions. Signed-off-by: Mac Lin <mkl0301@gmail.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
-rw-r--r--arch/arm/mach-cns3xxx/cns3420vb.c54
-rw-r--r--arch/arm/mach-cns3xxx/include/mach/cns3xxx.h2
-rw-r--r--arch/arm/mach-cns3xxx/include/mach/pm.h4
-rw-r--r--arch/arm/mach-cns3xxx/pm.c4
4 files changed, 62 insertions, 2 deletions
diff --git a/arch/arm/mach-cns3xxx/cns3420vb.c b/arch/arm/mach-cns3xxx/cns3420vb.c
index 90fe9ab8591d..08e5c8759502 100644
--- a/arch/arm/mach-cns3xxx/cns3420vb.c
+++ b/arch/arm/mach-cns3xxx/cns3420vb.c
@@ -17,6 +17,7 @@
#include <linux/kernel.h>
#include <linux/compiler.h>
#include <linux/io.h>
+#include <linux/dma-mapping.h>
#include <linux/serial_core.h>
#include <linux/serial_8250.h>
#include <linux/platform_device.h>
@@ -108,10 +109,63 @@ static void __init cns3420_early_serial_setup(void)
}
/*
+ * USB
+ */
+static struct resource cns3xxx_usb_ehci_resources[] = {
+ [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_ehci_dma_mask = DMA_BIT_MASK(32);
+
+static struct platform_device cns3xxx_usb_ehci_device = {
+ .name = "cns3xxx-ehci",
+ .num_resources = ARRAY_SIZE(cns3xxx_usb_ehci_resources),
+ .resource = cns3xxx_usb_ehci_resources,
+ .dev = {
+ .dma_mask = &cns3xxx_usb_ehci_dma_mask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ },
+};
+
+static struct resource cns3xxx_usb_ohci_resources[] = {
+ [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 = DMA_BIT_MASK(32);
+
+static struct platform_device cns3xxx_usb_ohci_device = {
+ .name = "cns3xxx-ohci",
+ .num_resources = ARRAY_SIZE(cns3xxx_usb_ohci_resources),
+ .resource = cns3xxx_usb_ohci_resources,
+ .dev = {
+ .dma_mask = &cns3xxx_usb_ohci_dma_mask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ },
+};
+
+/*
* 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 6dbce13771ca..191c8e57f289 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 102617bdb45b..6eae7f764d1d 100644
--- a/arch/arm/mach-cns3xxx/include/mach/pm.h
+++ b/arch/arm/mach-cns3xxx/include/mach/pm.h
@@ -11,9 +11,13 @@
#ifndef __CNS3XXX_PM_H
#define __CNS3XXX_PM_H
+#include <asm/atomic.h>
+
void cns3xxx_pwr_clk_en(unsigned int block);
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 c047c1a2bc2a..5e579552aa54 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>
#include <mach/pm.h>
@@ -118,3 +119,6 @@ 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);
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