[msm7x30] Check local clock control state and enable hsusb clocks
In order to be compatible with modem versions that do not always grant
local clock control for usb to apps processor, we check the status
of hsusb core clock local clock control. If we have local clock
control, we enable it ourselves using shadow register. If not, then
make a proc comm to modem to enable the same.
Also included minor cleanup to move usb clock initializations to
platform specific area.
Change-Id: I1faac09a94e9b9402f06172d528b54ed6058f450
diff --git a/platform/msm_shared/hsusb.c b/platform/msm_shared/hsusb.c
index 88e4eae..bdd8e2e 100644
--- a/platform/msm_shared/hsusb.c
+++ b/platform/msm_shared/hsusb.c
@@ -113,7 +113,10 @@
/* end of common code */
-void hsusb_clock_init(void);
+__WEAK void hsusb_clock_init(void)
+{
+ return 0;
+}
#if 1
#define DBG(x...) do {} while(0)
@@ -518,95 +521,6 @@
writel(0x81000000, USB_PORTSC);
return 0;
}
-#define USB_HS1_XVCR_FS_CLK_MD 0x00902908
-#define USB_HS1_XVCR_FS_CLK_NS 0x0090290C
-
-void hsusb_8x60_clock_init(void)
-{
- int val;
- /* Vote for PLL8 */
- val = readl(0x009034C0);
- val |= (1<<8);
- writel(val, 0x009034C0);
- /* Wait until PLL is enabled. */
- while (!(readl(0x00903158) & (1<<16)));
-
- //Set 7th bit in NS Register
- val = 1 << 7;
- writel(val, USB_HS1_XVCR_FS_CLK_NS);
-
- //Set rate specific value in MD
- writel(0x000500DF, USB_HS1_XVCR_FS_CLK_MD);
-
- //Set value in NS register
- val = 1 << 7;
- val |= 0x00E400C3;
- writel(val, USB_HS1_XVCR_FS_CLK_NS);
-
- // Clear 7th bit
- val = 1 << 7;
- val = ~val;
- val = val & readl(USB_HS1_XVCR_FS_CLK_NS);
- writel(val, USB_HS1_XVCR_FS_CLK_NS);
-
- //set 11th bit
- val = 1 << 11;
- val |= readl(USB_HS1_XVCR_FS_CLK_NS);
- writel(val, USB_HS1_XVCR_FS_CLK_NS);
-
- //set 9th bit
- val = 1 << 9;
- val |= readl(USB_HS1_XVCR_FS_CLK_NS);
- writel(val, USB_HS1_XVCR_FS_CLK_NS);
-
- //set 8th bit
- val = 1 << 8;
- val |= readl(USB_HS1_XVCR_FS_CLK_NS);
- writel(val, USB_HS1_XVCR_FS_CLK_NS);
-}
-
-void hsusb_7x30_clock_init(void)
-{
- int val = 0;
-
- /* Enable USBH_P_CLK */
- val = 1 << 25;
- val = val | readl(SH2_GLBL_CLK_ENA_SC);
- writel(val, SH2_GLBL_CLK_ENA_SC);
-
- /* Set value in MD register */
- val = 0x5DF;
- writel(val, SH2_USBH_MD_REG);
-
- /* Set value in NS register */
- val = 1 << 8;
- val = val | readl(SH2_USBH_NS_REG);
- writel(val, SH2_USBH_NS_REG);
-
- val = 1 << 11;
- val = val | readl(SH2_USBH_NS_REG);
- writel(val, SH2_USBH_NS_REG);
-
- val = 1 << 9;
- val = val | readl(SH2_USBH_NS_REG);
- writel(val, SH2_USBH_NS_REG);
-
- val = 1 << 13;
- val = val | readl(SH2_USBH_NS_REG);
- writel(val, SH2_USBH_NS_REG);
-}
-
-void hsusb_clock_init(void)
-{
- // Enable usb clocks from apps processor for 7x30.
- // USB clocks already initialized for other targets
- // so skipping proc comm call to enable usb clocks.
-#ifdef PLATFORM_MSM7X30
- hsusb_7x30_clock_init();
-#elif PLATFORM_MSM8X60
- hsusb_8x60_clock_init();
-#endif
-}
void board_usb_init(void);
void board_ulpi_init(void);