usb: musb: hold context on musb structure

when we start splitting HW glue layer, it's
gonna make it easier to re-use that structure.

Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/musb/musb_core.c

@@ -2265,8 +2265,6 @@ static int __exit musb_remove(struct platform_device *pdev)
 
 #ifdef	CONFIG_PM
 
-static struct musb_context_registers musb_context;
-
 void musb_save_context(struct musb *musb)
 {
 	int i;
@@ -2274,65 +2272,65 @@ void musb_save_context(struct musb *musb)
 	void __iomem *epio;
 
 	if (is_host_enabled(musb)) {
-		musb_context.frame = musb_readw(musb_base, MUSB_FRAME);
-		musb_context.testmode = musb_readb(musb_base, MUSB_TESTMODE);
-		musb_context.busctl = musb_read_ulpi_buscontrol(musb->mregs);
+		musb->context.frame = musb_readw(musb_base, MUSB_FRAME);
+		musb->context.testmode = musb_readb(musb_base, MUSB_TESTMODE);
+		musb->context.busctl = musb_read_ulpi_buscontrol(musb->mregs);
 	}
-	musb_context.power = musb_readb(musb_base, MUSB_POWER);
-	musb_context.intrtxe = musb_readw(musb_base, MUSB_INTRTXE);
-	musb_context.intrrxe = musb_readw(musb_base, MUSB_INTRRXE);
-	musb_context.intrusbe = musb_readb(musb_base, MUSB_INTRUSBE);
-	musb_context.index = musb_readb(musb_base, MUSB_INDEX);
-	musb_context.devctl = musb_readb(musb_base, MUSB_DEVCTL);
+	musb->context.power = musb_readb(musb_base, MUSB_POWER);
+	musb->context.intrtxe = musb_readw(musb_base, MUSB_INTRTXE);
+	musb->context.intrrxe = musb_readw(musb_base, MUSB_INTRRXE);
+	musb->context.intrusbe = musb_readb(musb_base, MUSB_INTRUSBE);
+	musb->context.index = musb_readb(musb_base, MUSB_INDEX);
+	musb->context.devctl = musb_readb(musb_base, MUSB_DEVCTL);
 
 	for (i = 0; i < musb->config->num_eps; ++i) {
 		epio = musb->endpoints[i].regs;
-		musb_context.index_regs[i].txmaxp =
+		musb->context.index_regs[i].txmaxp =
 			musb_readw(epio, MUSB_TXMAXP);
-		musb_context.index_regs[i].txcsr =
+		musb->context.index_regs[i].txcsr =
 			musb_readw(epio, MUSB_TXCSR);
-		musb_context.index_regs[i].rxmaxp =
+		musb->context.index_regs[i].rxmaxp =
 			musb_readw(epio, MUSB_RXMAXP);
-		musb_context.index_regs[i].rxcsr =
+		musb->context.index_regs[i].rxcsr =
 			musb_readw(epio, MUSB_RXCSR);
 
 		if (musb->dyn_fifo) {
-			musb_context.index_regs[i].txfifoadd =
+			musb->context.index_regs[i].txfifoadd =
 					musb_read_txfifoadd(musb_base);
-			musb_context.index_regs[i].rxfifoadd =
+			musb->context.index_regs[i].rxfifoadd =
 					musb_read_rxfifoadd(musb_base);
-			musb_context.index_regs[i].txfifosz =
+			musb->context.index_regs[i].txfifosz =
 					musb_read_txfifosz(musb_base);
-			musb_context.index_regs[i].rxfifosz =
+			musb->context.index_regs[i].rxfifosz =
 					musb_read_rxfifosz(musb_base);
 		}
 		if (is_host_enabled(musb)) {
-			musb_context.index_regs[i].txtype =
+			musb->context.index_regs[i].txtype =
 				musb_readb(epio, MUSB_TXTYPE);
-			musb_context.index_regs[i].txinterval =
+			musb->context.index_regs[i].txinterval =
 				musb_readb(epio, MUSB_TXINTERVAL);
-			musb_context.index_regs[i].rxtype =
+			musb->context.index_regs[i].rxtype =
 				musb_readb(epio, MUSB_RXTYPE);
-			musb_context.index_regs[i].rxinterval =
+			musb->context.index_regs[i].rxinterval =
 				musb_readb(epio, MUSB_RXINTERVAL);
 
-			musb_context.index_regs[i].txfunaddr =
+			musb->context.index_regs[i].txfunaddr =
 				musb_read_txfunaddr(musb_base, i);
-			musb_context.index_regs[i].txhubaddr =
+			musb->context.index_regs[i].txhubaddr =
 				musb_read_txhubaddr(musb_base, i);
-			musb_context.index_regs[i].txhubport =
+			musb->context.index_regs[i].txhubport =
 				musb_read_txhubport(musb_base, i);
 
-			musb_context.index_regs[i].rxfunaddr =
+			musb->context.index_regs[i].rxfunaddr =
 				musb_read_rxfunaddr(musb_base, i);
-			musb_context.index_regs[i].rxhubaddr =
+			musb->context.index_regs[i].rxhubaddr =
 				musb_read_rxhubaddr(musb_base, i);
-			musb_context.index_regs[i].rxhubport =
+			musb->context.index_regs[i].rxhubport =
 				musb_read_rxhubport(musb_base, i);
 		}
 	}
 
-	musb_platform_save_context(musb, &musb_context);
+	musb_platform_save_context(musb, &musb->context);
 }
 
 void musb_restore_context(struct musb *musb)
@@ -2342,67 +2340,67 @@ void musb_restore_context(struct musb *musb)
 	void __iomem *ep_target_regs;
 	void __iomem *epio;
 
-	musb_platform_restore_context(musb, &musb_context);
+	musb_platform_restore_context(musb, &musb->context);
 
 	if (is_host_enabled(musb)) {
-		musb_writew(musb_base, MUSB_FRAME, musb_context.frame);
-		musb_writeb(musb_base, MUSB_TESTMODE, musb_context.testmode);
-		musb_write_ulpi_buscontrol(musb->mregs, musb_context.busctl);
+		musb_writew(musb_base, MUSB_FRAME, musb->context.frame);
+		musb_writeb(musb_base, MUSB_TESTMODE, musb->context.testmode);
+		musb_write_ulpi_buscontrol(musb->mregs, musb->context.busctl);
 	}
-	musb_writeb(musb_base, MUSB_POWER, musb_context.power);
-	musb_writew(musb_base, MUSB_INTRTXE, musb_context.intrtxe);
-	musb_writew(musb_base, MUSB_INTRRXE, musb_context.intrrxe);
-	musb_writeb(musb_base, MUSB_INTRUSBE, musb_context.intrusbe);
-	musb_writeb(musb_base, MUSB_DEVCTL, musb_context.devctl);
+	musb_writeb(musb_base, MUSB_POWER, musb->context.power);
+	musb_writew(musb_base, MUSB_INTRTXE, musb->context.intrtxe);
+	musb_writew(musb_base, MUSB_INTRRXE, musb->context.intrrxe);
+	musb_writeb(musb_base, MUSB_INTRUSBE, musb->context.intrusbe);
+	musb_writeb(musb_base, MUSB_DEVCTL, musb->context.devctl);
 
 	for (i = 0; i < musb->config->num_eps; ++i) {
 		epio = musb->endpoints[i].regs;
 		musb_writew(epio, MUSB_TXMAXP,
-			musb_context.index_regs[i].txmaxp);
+			musb->context.index_regs[i].txmaxp);
 		musb_writew(epio, MUSB_TXCSR,
-			musb_context.index_regs[i].txcsr);
+			musb->context.index_regs[i].txcsr);
 		musb_writew(epio, MUSB_RXMAXP,
-			musb_context.index_regs[i].rxmaxp);
+			musb->context.index_regs[i].rxmaxp);
 		musb_writew(epio, MUSB_RXCSR,
-			musb_context.index_regs[i].rxcsr);
+			musb->context.index_regs[i].rxcsr);
 
 		if (musb->dyn_fifo) {
 			musb_write_txfifosz(musb_base,
-				musb_context.index_regs[i].txfifosz);
+				musb->context.index_regs[i].txfifosz);
 			musb_write_rxfifosz(musb_base,
-				musb_context.index_regs[i].rxfifosz);
+				musb->context.index_regs[i].rxfifosz);
 			musb_write_txfifoadd(musb_base,
-				musb_context.index_regs[i].txfifoadd);
+				musb->context.index_regs[i].txfifoadd);
 			musb_write_rxfifoadd(musb_base,
-				musb_context.index_regs[i].rxfifoadd);
+				musb->context.index_regs[i].rxfifoadd);
 		}
 
 		if (is_host_enabled(musb)) {
 			musb_writeb(epio, MUSB_TXTYPE,
-				musb_context.index_regs[i].txtype);
+				musb->context.index_regs[i].txtype);
 			musb_writeb(epio, MUSB_TXINTERVAL,
-				musb_context.index_regs[i].txinterval);
+				musb->context.index_regs[i].txinterval);
 			musb_writeb(epio, MUSB_RXTYPE,
-				musb_context.index_regs[i].rxtype);
+				musb->context.index_regs[i].rxtype);
 			musb_writeb(epio, MUSB_RXINTERVAL,
 
-			musb_context.index_regs[i].rxinterval);
+			musb->context.index_regs[i].rxinterval);
 			musb_write_txfunaddr(musb_base, i,
-				musb_context.index_regs[i].txfunaddr);
+				musb->context.index_regs[i].txfunaddr);
 			musb_write_txhubaddr(musb_base, i,
-				musb_context.index_regs[i].txhubaddr);
+				musb->context.index_regs[i].txhubaddr);
 			musb_write_txhubport(musb_base, i,
-				musb_context.index_regs[i].txhubport);
+				musb->context.index_regs[i].txhubport);
 
 			ep_target_regs =
 				musb_read_target_reg_base(i, musb_base);
 
 			musb_write_rxfunaddr(ep_target_regs,
-				musb_context.index_regs[i].rxfunaddr);
+				musb->context.index_regs[i].rxfunaddr);
 			musb_write_rxhubaddr(ep_target_regs,
-				musb_context.index_regs[i].rxhubaddr);
+				musb->context.index_regs[i].rxhubaddr);
 			musb_write_rxhubport(ep_target_regs,
-				musb_context.index_regs[i].rxhubport);
+				musb->context.index_regs[i].rxhubport);
 		}
 	}
 }

drivers/usb/musb/musb_core.h

@@ -353,6 +353,33 @@ static inline struct usb_request *next_out_request(struct musb_hw_ep *hw_ep)
 #endif
 }
 
+struct musb_csr_regs {
+	/* FIFO registers */
+	u16 txmaxp, txcsr, rxmaxp, rxcsr;
+	u16 rxfifoadd, txfifoadd;
+	u8 txtype, txinterval, rxtype, rxinterval;
+	u8 rxfifosz, txfifosz;
+	u8 txfunaddr, txhubaddr, txhubport;
+	u8 rxfunaddr, rxhubaddr, rxhubport;
+};
+
+struct musb_context_registers {
+
+#if defined(CONFIG_ARCH_OMAP2430) || defined(CONFIG_ARCH_OMAP3) || \
+    defined(CONFIG_ARCH_OMAP4)
+	u32 otg_sysconfig, otg_forcestandby;
+#endif
+	u8 power;
+	u16 intrtxe, intrrxe;
+	u8 intrusbe;
+	u16 frame;
+	u8 index, testmode;
+
+	u8 devctl, busctl, misc;
+
+	struct musb_csr_regs index_regs[MUSB_C_NUM_EPS];
+};
+
 /*
  * struct musb - Driver instance data.
  */
@@ -363,6 +390,7 @@ struct musb {
 	struct clk		*phy_clock;
 
 	const struct musb_platform_ops *ops;
+	struct musb_context_registers context;
 
 	irqreturn_t		(*isr)(int, void *);
 	struct work_struct	irq_work;
@@ -582,33 +610,6 @@ extern irqreturn_t musb_interrupt(struct musb *);
 extern void musb_hnp_stop(struct musb *musb);
 
 #ifdef CONFIG_PM
-struct musb_csr_regs {
-	/* FIFO registers */
-	u16 txmaxp, txcsr, rxmaxp, rxcsr;
-	u16 rxfifoadd, txfifoadd;
-	u8 txtype, txinterval, rxtype, rxinterval;
-	u8 rxfifosz, txfifosz;
-	u8 txfunaddr, txhubaddr, txhubport;
-	u8 rxfunaddr, rxhubaddr, rxhubport;
-};
-
-struct musb_context_registers {
-
-#if defined(CONFIG_ARCH_OMAP2430) || defined(CONFIG_ARCH_OMAP3) || \
-    defined(CONFIG_ARCH_OMAP4)
-	u32 otg_sysconfig, otg_forcestandby;
-#endif
-	u8 power;
-	u16 intrtxe, intrrxe;
-	u8 intrusbe;
-	u16 frame;
-	u8 index, testmode;
-
-	u8 devctl, busctl, misc;
-
-	struct musb_csr_regs index_regs[MUSB_C_NUM_EPS];
-};
-
 #if defined(CONFIG_ARCH_OMAP2430) || defined(CONFIG_ARCH_OMAP3) || \
     defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_BLACKFIN)
 extern void musb_platform_save_context(struct musb *musb,