openwrt-xburst/target/linux/brcm47xx/patches-2.6.22/210-ssb_fixes.patch

Index: linux-2.6.22-rc5/drivers/ssb/driver_chipcommon.c
===================================================================
--- linux-2.6.22-rc5.orig/drivers/ssb/driver_chipcommon.c	2007-06-21 23:04:38.000000000 +0100
+++ linux-2.6.22-rc5/drivers/ssb/driver_chipcommon.c	2007-06-24 20:07:15.000000000 +0100
@@ -264,6 +264,31 @@
 	ssb_chipco_set_clockmode(cc, SSB_CLKMODE_FAST);
 }
 
+/* TODO: These two functions are a clear candidate for merging, but one gets
+ * the processor clock, and the other gets the bus clock.
+ */
+void ssb_chipco_get_clockcpu(struct ssb_chipcommon *cc,
+                             u32 *plltype, u32 *n, u32 *m)
+{
+	*n = chipco_read32(cc, SSB_CHIPCO_CLOCK_N);
+	*plltype = (cc->capabilities & SSB_CHIPCO_CAP_PLLT);
+	switch (*plltype) {
+		case SSB_PLLTYPE_2:
+		case SSB_PLLTYPE_4:
+		case SSB_PLLTYPE_6:
+		case SSB_PLLTYPE_7:
+			*m = chipco_read32(cc, SSB_CHIPCO_CLOCK_MIPS);
+			break;
+		case SSB_PLLTYPE_3:
+			/* 5350 uses m2 to control mips */
+			*m = chipco_read32(cc, SSB_CHIPCO_CLOCK_M2);
+			break;
+		default:
+			*m = chipco_read32(cc, SSB_CHIPCO_CLOCK_SB);
+			break;
+	}
+}
+
 void ssb_chipco_get_clockcontrol(struct ssb_chipcommon *cc,
 				 u32 *plltype, u32 *n, u32 *m)
 {
@@ -400,3 +425,13 @@
 	return nr_ports;
 }
 #endif /* CONFIG_SSB_SERIAL */
+
+/* Set chip watchdog reset timer to fire in 'ticks' backplane cycles */
+int
+ssb_chipco_watchdog(struct ssb_chipcommon *cc, uint ticks)
+{
+	/* instant NMI */
+	chipco_write32(cc, SSB_CHIPCO_WATCHDOG, ticks);
+	return 0;
+}
+EXPORT_SYMBOL(ssb_chipco_watchdog);
Index: linux-2.6.22-rc5/drivers/ssb/driver_mipscore.c
===================================================================
--- linux-2.6.22-rc5.orig/drivers/ssb/driver_mipscore.c	2007-06-10 16:44:31.000000000 +0100
+++ linux-2.6.22-rc5/drivers/ssb/driver_mipscore.c	2007-06-24 20:48:52.000000000 +0100
@@ -4,6 +4,7 @@
  *
  * Copyright 2005, Broadcom Corporation
  * Copyright 2006, 2007, Michael Buesch <mb@bu3sch.de>
+ * Copyright 2006, 2007, Felix Fietkau <nbd@openwrt.org>
  *
  * Licensed under the GNU/GPL. See COPYING for details.
  */
@@ -31,6 +32,16 @@
 	ssb_write32(mcore->dev, offset, value);
 }
 
+static inline u32 extif_read32(struct ssb_extif *extif, u16 offset)
+{
+	return ssb_read32(extif->dev, offset);
+}
+
+static inline void extif_write32(struct ssb_extif *extif, u16 offset, u32 value)
+{
+	ssb_write32(extif->dev, offset, value);
+}
+
 static const u32 ipsflag_irq_mask[] = {
 	0,
 	SSB_IPSFLAG_IRQ1,
@@ -118,9 +129,9 @@
 }
 
 /* XXX: leave here or move into separate extif driver? */
-static int ssb_extif_serial_init(struct ssb_device *dev, struct ssb_serial_ports *ports)
+static int ssb_extif_serial_init(struct ssb_extif *dev, struct ssb_serial_port *ports)
 {
-
+	return 0;
 }
 
 
@@ -174,23 +185,76 @@
 {
 	struct ssb_bus *bus = mcore->dev->bus;
 
+	mcore->flash_buswidth = 2;
 	if (bus->chipco.dev) {
 		mcore->flash_window = 0x1c000000;
-		mcore->flash_window_size = 0x800000;
+		mcore->flash_window_size = 0x02000000;
+		if ((ssb_read32(bus->chipco.dev, SSB_CHIPCO_FLASH_CFG)
+		               & SSB_CHIPCO_CFG_DS16) == 0)
+			mcore->flash_buswidth = 1;
 	} else {
 		mcore->flash_window = 0x1fc00000;
-		mcore->flash_window_size = 0x400000;
+		mcore->flash_window_size = 0x00400000;
 	}
 }
 
+static void ssb_extif_timing_init(struct ssb_extif *extif, u32 ns)
+{
+	u32 tmp;
+
+	/* Initialize extif so we can get to the LEDs and external UART */
+	extif_write32(extif, SSB_EXTIF_PROG_CFG, SSB_EXTCFG_EN);
+
+	/* Set timing for the flash */
+	tmp  = DIV_ROUND_UP(10, ns) << SSB_PROG_WCNT_3_SHIFT;
+	tmp |= DIV_ROUND_UP(40, ns) << SSB_PROG_WCNT_1_SHIFT;
+	tmp |= DIV_ROUND_UP(120, ns);
+	extif_write32(extif, SSB_EXTIF_PROG_WAITCNT, tmp);
+
+	/* Set programmable interface timing for external uart */
+	tmp  = DIV_ROUND_UP(10, ns) << SSB_PROG_WCNT_3_SHIFT;
+	tmp |= DIV_ROUND_UP(20, ns) << SSB_PROG_WCNT_2_SHIFT;
+	tmp |= DIV_ROUND_UP(100, ns) << SSB_PROG_WCNT_1_SHIFT;
+	tmp |= DIV_ROUND_UP(120, ns);
+	extif_write32(extif, SSB_EXTIF_PROG_WAITCNT, tmp);
+}
 
-static void ssb_cpu_clock(struct ssb_mipscore *mcore)
+static inline void ssb_extif_get_clockcontrol(struct ssb_extif *extif,
+                                              u32 *pll_type, u32 *n, u32 *m)
 {
+	*pll_type = SSB_PLLTYPE_1;
+	*n = extif_read32(extif, SSB_EXTIF_CLOCK_N);
+	*m = extif_read32(extif, SSB_EXTIF_CLOCK_SB);
 }
 
-void ssb_mipscore_init(struct ssb_mipscore *mcore)
+u32 ssb_cpu_clock(struct ssb_mipscore *mcore)
 {
 	struct ssb_bus *bus = mcore->dev->bus;
+	u32 pll_type, n, m, rate = 0;
+
+	if (bus->extif.dev) {
+		ssb_extif_get_clockcontrol(&bus->extif, &pll_type, &n, &m);
+	} else if (bus->chipco.dev) {
+		ssb_chipco_get_clockcpu(&bus->chipco, &pll_type, &n, &m);
+	} else
+		return 0;
+
+	if ((pll_type == SSB_PLLTYPE_5) || (bus->chip_id == 0x5365)) {
+		rate = 200000000;
+	} else {
+		rate = ssb_calc_clock_rate(pll_type, n, m);
+	}
+
+	if (pll_type == SSB_PLLTYPE_6) {
+		rate *= 2;
+	}
+
+	return rate;
+}
+
+void ssb_mipscore_init(struct ssb_mipscore *mcore)
+{
+	struct ssb_bus *bus;
 	struct ssb_device *dev;
 	unsigned long hz, ns;
 	unsigned int irq, i;
@@ -198,6 +262,8 @@
 	if (!mcore->dev)
 		return; /* We don't have a MIPS core */
 
+	bus = mcore->dev->bus;
+
 	ssb_dprintk(KERN_INFO PFX "Initializing MIPS core...\n");
 
 	hz = ssb_clockspeed(bus);
@@ -205,28 +271,9 @@
 		hz = 100000000;
 	ns = 1000000000 / hz;
 
-//TODO
-#if 0
-	if (have EXTIF) {
-		/* Initialize extif so we can get to the LEDs and external UART */
-		W_REG(&eir->prog_config, CF_EN);
-
-		/* Set timing for the flash */
-		tmp = CEIL(10, ns) << FW_W3_SHIFT;	/* W3 = 10nS */
-		tmp = tmp | (CEIL(40, ns) << FW_W1_SHIFT); /* W1 = 40nS */
-		tmp = tmp | CEIL(120, ns);		/* W0 = 120nS */
-		W_REG(&eir->prog_waitcount, tmp);	/* 0x01020a0c for a 100Mhz clock */
-
-		/* Set programmable interface timing for external uart */
-		tmp = CEIL(10, ns) << FW_W3_SHIFT;	/* W3 = 10nS */
-		tmp = tmp | (CEIL(20, ns) << FW_W2_SHIFT); /* W2 = 20nS */
-		tmp = tmp | (CEIL(100, ns) << FW_W1_SHIFT); /* W1 = 100nS */
-		tmp = tmp | CEIL(120, ns);		/* W0 = 120nS */
-		W_REG(&eir->prog_waitcount, tmp);
-	}
-	else... chipcommon
-#endif
-	if (bus->chipco.dev)
+	if (bus->extif.dev)
+		ssb_extif_timing_init(&bus->extif, ns);
+	else if (bus->chipco.dev)
 		ssb_chipco_timing_init(&bus->chipco, ns);
 
 	/* Assign IRQs to all cores on the bus, start with irq line 2, because serial usually takes 1 */
@@ -256,3 +303,5 @@
 	ssb_mips_serial_init(mcore);
 	ssb_mips_flash_detect(mcore);
 }
+
+EXPORT_SYMBOL(ssb_mips_irq);
Index: linux-2.6.22-rc5/include/linux/ssb/ssb_driver_chipcommon.h
===================================================================
--- linux-2.6.22-rc5.orig/include/linux/ssb/ssb_driver_chipcommon.h	2007-06-10 16:44:47.000000000 +0100
+++ linux-2.6.22-rc5/include/linux/ssb/ssb_driver_chipcommon.h	2007-06-24 20:07:15.000000000 +0100
@@ -364,6 +364,8 @@
 extern void ssb_chipco_suspend(struct ssb_chipcommon *cc, pm_message_t state);
 extern void ssb_chipco_resume(struct ssb_chipcommon *cc);
 
+extern void ssb_chipco_get_clockcpu(struct ssb_chipcommon *cc,
+                                    u32 *plltype, u32 *n, u32 *m);
 extern void ssb_chipco_get_clockcontrol(struct ssb_chipcommon *cc,
 					u32 *plltype, u32 *n, u32 *m);
 extern void ssb_chipco_timing_init(struct ssb_chipcommon *cc,
@@ -378,6 +380,46 @@
 extern void ssb_chipco_set_clockmode(struct ssb_chipcommon *cc,
 				     enum ssb_clkmode mode);
 
+/* GPIO functions */
+static inline u32 ssb_chipco_gpio_in(struct ssb_chipcommon *cc,
+                                     u32 mask)
+{
+	return ssb_read32(cc->dev, SSB_CHIPCO_GPIOIN) & mask;
+}
+
+static inline u32 ssb_chipco_gpio_out(struct ssb_chipcommon *cc,
+                                      u32 mask, u32 value)
+{
+	return ssb_write32_masked(cc->dev, SSB_CHIPCO_GPIOOUT, mask, value);
+}
+
+static inline u32 ssb_chipco_gpio_outen(struct ssb_chipcommon *cc,
+                                        u32 mask, u32 value)
+{
+	return ssb_write32_masked(cc->dev, SSB_CHIPCO_GPIOOUTEN, mask, value);
+}
+
+static inline u32 ssb_chipco_gpio_control(struct ssb_chipcommon *cc,
+                                          u32 mask, u32 value)
+{
+	return ssb_write32_masked(cc->dev, SSB_CHIPCO_GPIOCTL, mask, value);
+}
+
+static inline u32 ssb_chipco_gpio_intmask(struct ssb_chipcommon *cc,
+                                          u32 mask, u32 value)
+{
+	return ssb_write32_masked(cc->dev, SSB_CHIPCO_GPIOIRQ, mask, value);
+}
+
+static inline u32 ssb_chipco_gpio_polarity(struct ssb_chipcommon *cc,
+                                           u32 mask, u32 value)
+{
+	return ssb_write32_masked(cc->dev, SSB_CHIPCO_GPIOPOL, mask, value);
+}
+/* TODO: GPIO reservation */
+
+extern int ssb_chipco_watchdog(struct ssb_chipcommon *cc, uint ticks);
+
 #ifdef CONFIG_SSB_SERIAL
 extern int ssb_chipco_serial_init(struct ssb_chipcommon *cc,
 				  struct ssb_serial_port *ports);
Index: linux-2.6.22-rc5/include/linux/ssb/ssb_driver_extif.h
===================================================================
--- linux-2.6.22-rc5.orig/include/linux/ssb/ssb_driver_extif.h	2007-06-10 16:44:47.000000000 +0100
+++ linux-2.6.22-rc5/include/linux/ssb/ssb_driver_extif.h	2007-06-24 20:07:15.000000000 +0100
@@ -158,6 +158,36 @@
 /* watchdog */
 #define SSB_EXTIF_WATCHDOG_CLK		48000000	/* Hz */
 
+/* GPIO functions */
+static inline u32 ssb_extif_gpio_in(struct ssb_extif *extif,
+                                    u32 mask)
+{
+	return ssb_read32(extif->dev, SSB_EXTIF_GPIO_IN) & mask;
+}
+
+static inline u32 ssb_extif_gpio_out(struct ssb_extif *extif,
+                                     u32 mask, u32 value)
+{
+	return ssb_write32_masked(extif->dev, SSB_EXTIF_GPIO_OUT(0), mask, value);
+}
+
+static inline u32 ssb_extif_gpio_outen(struct ssb_extif *extif,
+                                       u32 mask, u32 value)
+{
+	return ssb_write32_masked(extif->dev, SSB_EXTIF_GPIO_OUTEN(0), mask, value);
+}
+
+static inline u32 ssb_extif_gpio_polarity(struct ssb_extif *extif,
+                                          u32 mask, u32 value)
+{
+	return ssb_write32_masked(extif->dev, SSB_EXTIF_GPIO_INTPOL, mask, value);
+}
+
+static inline u32 ssb_extif_gpio_intmask(struct ssb_extif *extif,
+                                         u32 mask, u32 value)
+{
+	return ssb_write32_masked(extif->dev, SSB_EXTIF_GPIO_INTMASK, mask, value);
+}
 
 #endif /* __KERNEL__ */
 #endif /* LINUX_SSB_EXTIFCORE_H_ */
Index: linux-2.6.22-rc5/include/linux/ssb/ssb_driver_mips.h
===================================================================
--- linux-2.6.22-rc5.orig/include/linux/ssb/ssb_driver_mips.h	2007-06-10 16:44:47.000000000 +0100
+++ linux-2.6.22-rc5/include/linux/ssb/ssb_driver_mips.h	2007-06-24 20:07:15.000000000 +0100
@@ -22,11 +22,13 @@
 	int nr_serial_ports;
 	struct ssb_serial_port serial_ports[4];
 
+	int flash_buswidth;
 	u32 flash_window;
 	u32 flash_window_size;
 };
 
 extern void ssb_mipscore_init(struct ssb_mipscore *mcore);
+extern u32 ssb_cpu_clock(struct ssb_mipscore *mcore);
 
 extern unsigned int ssb_mips_irq(struct ssb_device *dev);
 
Index: linux-2.6.22-rc5/include/linux/ssb/ssb.h
===================================================================
--- linux-2.6.22-rc5.orig/include/linux/ssb/ssb.h	2007-06-24 19:49:56.000000000 +0100
+++ linux-2.6.22-rc5/include/linux/ssb/ssb.h	2007-06-24 20:07:15.000000000 +0100
@@ -270,6 +270,12 @@
 #define SSB_CHIPPACK_BCM4712M	2	/* Medium 225pin 4712 */
 #define SSB_CHIPPACK_BCM4712L	0	/* Large 340pin 4712 */
 
+static inline u16 ssb_read16(struct ssb_device *dev, u16 offset);
+static inline u32 ssb_read32(struct ssb_device *dev, u16 offset);
+static inline void ssb_write16(struct ssb_device *dev, u16 offset, u16 value);
+static inline void ssb_write32(struct ssb_device *dev, u16 offset, u32 value);
+static inline u32 ssb_write32_masked(struct ssb_device *dev, u16 offset, u32 mask, u32 value);
+
 #include <linux/ssb/ssb_driver_chipcommon.h>
 #include <linux/ssb/ssb_driver_mips.h>
 #include <linux/ssb/ssb_driver_extif.h>
@@ -388,6 +394,16 @@
 	dev->ops->write32(dev, offset, value);
 }
 
+static inline u32 ssb_write32_masked(struct ssb_device *dev,
+                                     u16 offset,
+                                     u32 mask,
+                                     u32 value)
+{
+	value &= mask;
+	value |= ssb_read32(dev, offset) & ~mask;
+	ssb_write32(dev, offset, value);
+	return value;
+}
 
 /* Translation (routing) bits that need to be ORed to DMA
  * addresses before they are given to a device. */