ARM: OMAP2: Add common register access for 24xx and 34xx

This patch adds common register access for 24xx and 34xx power
and clock management in order to share code between 24xx and 34xx.

Only change USB platform init code to use new register access, other
access will be changed in later patches.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 51 insertions, 16 deletions

diff --git a/arch/arm/plat-omap/usb.c b/arch/arm/plat-omap/usb.c
index a5aedf964b88..a619475c4b76 100644
--- a/arch/arm/plat-omap/usb.c
+++ b/arch/arm/plat-omap/usb.c
@@ -33,6 +33,7 @@
 #include <asm/system.h>
 #include <asm/hardware.h>
 
+#include <asm/arch/control.h>
 #include <asm/arch/mux.h>
 #include <asm/arch/usb.h>
 #include <asm/arch/board.h>
@@ -76,7 +77,7 @@
 
 /*-------------------------------------------------------------------------*/
 
-#ifdef  CONFIG_ARCH_OMAP_OTG
+#if     defined(CONFIG_ARCH_OMAP_OTG) || defined(CONFIG_USB_MUSB_OTG)
 
 static struct otg_transceiver *xceiv;
 
@@ -110,12 +111,48 @@ EXPORT_SYMBOL(otg_set_transceiver);
 
 #if defined(CONFIG_ARCH_OMAP_OTG) || defined(CONFIG_ARCH_OMAP15XX)
 
+static void omap2_usb_devconf_clear(u8 port, u32 mask)
+{
+        u32 r;
+
+        r = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
+        r &= ~USBTXWRMODEI(port, mask);
+        omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0);
+}
+
+static void omap2_usb_devconf_set(u8 port, u32 mask)
+{
+        u32 r;
+
+        r = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
+        r |= USBTXWRMODEI(port, mask);
+        omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0);
+}
+
+static void omap2_usb2_disable_5pinbitll(void)
+{
+        u32 r;
+
+        r = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
+        r &= ~(USBTXWRMODEI(2, USB_BIDIR_TLL) | USBT2TLL5PI);
+        omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0);
+}
+
+static void omap2_usb2_enable_5pinunitll(void)
+{
+        u32 r;
+
+        r = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
+        r |= USBTXWRMODEI(2, USB_UNIDIR_TLL) | USBT2TLL5PI;
+        omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0);
+}
+
 static u32 __init omap_usb0_init(unsigned nwires, unsigned is_device)
 {
         u32     syscon1 = 0;
 
         if (cpu_is_omap24xx())
-                CONTROL_DEVCONF_REG &= ~USBT0WRMODEI(USB_BIDIR_TLL);
+                omap2_usb_devconf_clear(0, USB_BIDIR_TLL);
 
         if (nwires == 0) {
                 if (cpu_class_is_omap1() && !cpu_is_omap15xx()) {
@@ -187,19 +224,19 @@ static u32 __init omap_usb0_init(unsigned nwires, unsigned is_device)
         case 3:
                 syscon1 = 2;
                 if (cpu_is_omap24xx())
-                        CONTROL_DEVCONF_REG |= USBT0WRMODEI(USB_BIDIR);
+                        omap2_usb_devconf_set(0, USB_BIDIR);
                 break;
         case 4:
                 syscon1 = 1;
                 if (cpu_is_omap24xx())
-                        CONTROL_DEVCONF_REG |= USBT0WRMODEI(USB_BIDIR);
+                        omap2_usb_devconf_set(0, USB_BIDIR);
                 break;
         case 6:
                 syscon1 = 3;
                 if (cpu_is_omap24xx()) {
                         omap_cfg_reg(J19_24XX_USB0_VP);
                         omap_cfg_reg(K20_24XX_USB0_VM);
-                        CONTROL_DEVCONF_REG |= USBT0WRMODEI(USB_UNIDIR);
+                        omap2_usb_devconf_set(0, USB_UNIDIR);
                 } else {
                         omap_cfg_reg(AA9_USB0_VP);
                         omap_cfg_reg(R9_USB0_VM);
@@ -220,7 +257,7 @@ static u32 __init omap_usb1_init(unsigned nwires)
         if (cpu_class_is_omap1() && !cpu_is_omap15xx() && nwires != 6)
                 USB_TRANSCEIVER_CTRL_REG &= ~CONF_USB1_UNI_R;
         if (cpu_is_omap24xx())
-                CONTROL_DEVCONF_REG &= ~USBT1WRMODEI(USB_BIDIR_TLL);
+                omap2_usb_devconf_clear(1, USB_BIDIR_TLL);
 
         if (nwires == 0)
                 return 0;
@@ -261,17 +298,17 @@ static u32 __init omap_usb1_init(unsigned nwires)
                  * this TLL link is not using DP/DM
                  */
                 syscon1 = 1;
-                CONTROL_DEVCONF_REG |= USBT1WRMODEI(USB_BIDIR_TLL);
+                omap2_usb_devconf_set(1, USB_BIDIR_TLL);
                 break;
         case 3:
                 syscon1 = 2;
                 if (cpu_is_omap24xx())
-                        CONTROL_DEVCONF_REG |= USBT1WRMODEI(USB_BIDIR);
+                        omap2_usb_devconf_set(1, USB_BIDIR);
                 break;
         case 4:
                 syscon1 = 1;
                 if (cpu_is_omap24xx())
-                        CONTROL_DEVCONF_REG |= USBT1WRMODEI(USB_BIDIR);
+                        omap2_usb_devconf_set(1, USB_BIDIR);
                 break;
         case 6:
                 if (cpu_is_omap24xx())
@@ -295,8 +332,7 @@ static u32 __init omap_usb2_init(unsigned nwires, unsigned alt_pingroup)
         u32     syscon1 = 0;
 
         if (cpu_is_omap24xx()) {
-                CONTROL_DEVCONF_REG &= ~(USBT2WRMODEI(USB_BIDIR_TLL)
-                                        | USBT2TLL5PI);
+                omap2_usb2_disable_5pinbitll();
                 alt_pingroup = 0;
         }
 
@@ -343,17 +379,17 @@ static u32 __init omap_usb2_init(unsigned nwires, unsigned alt_pingroup)
                  * this TLL link is not using DP/DM
                  */
                 syscon1 = 1;
-                CONTROL_DEVCONF_REG |= USBT2WRMODEI(USB_BIDIR_TLL);
+                omap2_usb_devconf_set(2, USB_BIDIR_TLL);
                 break;
         case 3:
                 syscon1 = 2;
                 if (cpu_is_omap24xx())
-                        CONTROL_DEVCONF_REG |= USBT2WRMODEI(USB_BIDIR);
+                        omap2_usb_devconf_set(2, USB_BIDIR);
                 break;
         case 4:
                 syscon1 = 1;
                 if (cpu_is_omap24xx())
-                        CONTROL_DEVCONF_REG |= USBT2WRMODEI(USB_BIDIR);
+                        omap2_usb_devconf_set(2, USB_BIDIR);
                 break;
         case 5:
                 if (!cpu_is_omap24xx())
@@ -364,8 +400,7 @@ static u32 __init omap_usb2_init(unsigned nwires, unsigned alt_pingroup)
                  * set up OTG_SYSCON2.HMC_TLL{ATTACH,SPEED}
                  */
                 syscon1 = 3;
-                CONTROL_DEVCONF_REG |= USBT2WRMODEI(USB_UNIDIR_TLL)
-                                        | USBT2TLL5PI;
+                omap2_usb2_enable_5pinunitll();
                 break;
         case 6:
                 if (cpu_is_omap24xx())