12 files changed, 341 insertions, 18 deletions

diff --git a/arch/powerpc/platforms/83xx/Kconfig b/arch/powerpc/platforms/83xx/Kconfig
index 83c664a..437d29a 100644
--- a/arch/powerpc/platforms/83xx/Kconfig
+++ b/arch/powerpc/platforms/83xx/Kconfig
@@ -1,6 +1,6 @@
 menuconfig PPC_83xx
 	bool "83xx-based boards"
-	depends on 6xx && PPC_MULTIPLATFORM
+	depends on 6xx
 	select PPC_UDBG_16550
 	select PPC_PCI_CHOICE
 	select FSL_PCI if PCI
diff --git a/arch/powerpc/platforms/83xx/Makefile b/arch/powerpc/platforms/83xx/Makefile
index ba5028e..051777c 100644
--- a/arch/powerpc/platforms/83xx/Makefile
+++ b/arch/powerpc/platforms/83xx/Makefile
@@ -3,6 +3,7 @@
 #
 obj-y				:= misc.o usb.o
 obj-$(CONFIG_SUSPEND)		+= suspend.o suspend-asm.o
+obj-$(CONFIG_MCU_MPC8349EMITX)	+= mcu_mpc8349emitx.o
 obj-$(CONFIG_MPC831x_RDB)	+= mpc831x_rdb.o
 obj-$(CONFIG_MPC832x_RDB)	+= mpc832x_rdb.o
 obj-$(CONFIG_MPC834x_MDS)	+= mpc834x_mds.o
diff --git a/arch/powerpc/platforms/83xx/asp834x.c b/arch/powerpc/platforms/83xx/asp834x.c
index bb30d67..aa0d84d 100644
--- a/arch/powerpc/platforms/83xx/asp834x.c
+++ b/arch/powerpc/platforms/83xx/asp834x.c
@@ -58,6 +58,7 @@ static struct __initdata of_device_id asp8347_ids[] = {
 	{ .type = "soc", },
 	{ .compatible = "soc", },
 	{ .compatible = "simple-bus", },
+	{ .compatible = "gianfar", },
 	{},
 };
 
diff --git a/arch/powerpc/platforms/83xx/mcu_mpc8349emitx.c b/arch/powerpc/platforms/83xx/mcu_mpc8349emitx.c
new file mode 100644
index 0000000..82a9bcb
--- /dev/null
+++ b/arch/powerpc/platforms/83xx/mcu_mpc8349emitx.c
@@ -0,0 +1,209 @@
+/*
+ * Power Management and GPIO expander driver for MPC8349E-mITX-compatible MCU
+ *
+ * Copyright (c) 2008  MontaVista Software, Inc.
+ *
+ * Author: Anton Vorontsov <avorontsov@ru.mvista.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/mutex.h>
+#include <linux/i2c.h>
+#include <linux/gpio.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <asm/prom.h>
+#include <asm/machdep.h>
+
+/*
+ * I don't have specifications for the MCU firmware, I found this register
+ * and bits positions by the trial&error method.
+ */
+#define MCU_REG_CTRL	0x20
+#define MCU_CTRL_POFF	0x40
+
+#define MCU_NUM_GPIO	2
+
+struct mcu {
+	struct mutex lock;
+	struct device_node *np;
+	struct i2c_client *client;
+	struct of_gpio_chip of_gc;
+	u8 reg_ctrl;
+};
+
+static struct mcu *glob_mcu;
+
+static void mcu_power_off(void)
+{
+	struct mcu *mcu = glob_mcu;
+
+	pr_info("Sending power-off request to the MCU...\n");
+	mutex_lock(&mcu->lock);
+	i2c_smbus_write_byte_data(glob_mcu->client, MCU_REG_CTRL,
+				  mcu->reg_ctrl | MCU_CTRL_POFF);
+	mutex_unlock(&mcu->lock);
+}
+
+static void mcu_gpio_set(struct gpio_chip *gc, unsigned int gpio, int val)
+{
+	struct of_gpio_chip *of_gc = to_of_gpio_chip(gc);
+	struct mcu *mcu = container_of(of_gc, struct mcu, of_gc);
+	u8 bit = 1 << (4 + gpio);
+
+	mutex_lock(&mcu->lock);
+	if (val)
+		mcu->reg_ctrl &= ~bit;
+	else
+		mcu->reg_ctrl |= bit;
+
+	i2c_smbus_write_byte_data(mcu->client, MCU_REG_CTRL, mcu->reg_ctrl);
+	mutex_unlock(&mcu->lock);
+}
+
+static int mcu_gpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
+{
+	mcu_gpio_set(gc, gpio, val);
+	return 0;
+}
+
+static int mcu_gpiochip_add(struct mcu *mcu)
+{
+	struct device_node *np;
+	struct of_gpio_chip *of_gc = &mcu->of_gc;
+	struct gpio_chip *gc = &of_gc->gc;
+	int ret;
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,mcu-mpc8349emitx");
+	if (!np)
+		return -ENODEV;
+
+	gc->owner = THIS_MODULE;
+	gc->label = np->full_name;
+	gc->can_sleep = 1;
+	gc->ngpio = MCU_NUM_GPIO;
+	gc->base = -1;
+	gc->set = mcu_gpio_set;
+	gc->direction_output = mcu_gpio_dir_out;
+	of_gc->gpio_cells = 2;
+	of_gc->xlate = of_gpio_simple_xlate;
+
+	np->data = of_gc;
+	mcu->np = np;
+
+	/*
+	 * We don't want to lose the node, its ->data and ->full_name...
+	 * So, if succeeded, we don't put the node here.
+	 */
+	ret = gpiochip_add(gc);
+	if (ret)
+		of_node_put(np);
+	return ret;
+}
+
+static int mcu_gpiochip_remove(struct mcu *mcu)
+{
+	int ret;
+
+	ret = gpiochip_remove(&mcu->of_gc.gc);
+	if (ret)
+		return ret;
+	of_node_put(mcu->np);
+
+	return 0;
+}
+
+static int __devinit mcu_probe(struct i2c_client *client,
+			       const struct i2c_device_id *id)
+{
+	struct mcu *mcu;
+	int ret;
+
+	mcu = kzalloc(sizeof(*mcu), GFP_KERNEL);
+	if (!mcu)
+		return -ENOMEM;
+
+	mutex_init(&mcu->lock);
+	mcu->client = client;
+	i2c_set_clientdata(client, mcu);
+
+	ret = i2c_smbus_read_byte_data(mcu->client, MCU_REG_CTRL);
+	if (ret < 0)
+		goto err;
+	mcu->reg_ctrl = ret;
+
+	ret = mcu_gpiochip_add(mcu);
+	if (ret)
+		goto err;
+
+	/* XXX: this is potentially racy, but there is no lock for ppc_md */
+	if (!ppc_md.power_off) {
+		glob_mcu = mcu;
+		ppc_md.power_off = mcu_power_off;
+		dev_info(&client->dev, "will provide power-off service\n");
+	}
+
+	return 0;
+err:
+	kfree(mcu);
+	return ret;
+}
+
+static int __devexit mcu_remove(struct i2c_client *client)
+{
+	struct mcu *mcu = i2c_get_clientdata(client);
+	int ret;
+
+	if (glob_mcu == mcu) {
+		ppc_md.power_off = NULL;
+		glob_mcu = NULL;
+	}
+
+	ret = mcu_gpiochip_remove(mcu);
+	if (ret)
+		return ret;
+	i2c_set_clientdata(client, NULL);
+	kfree(mcu);
+	return 0;
+}
+
+static const struct i2c_device_id mcu_ids[] = {
+	{ "mcu-mpc8349emitx", },
+	{},
+};
+MODULE_DEVICE_TABLE(i2c, mcu_ids);
+
+static struct i2c_driver mcu_driver = {
+	.driver = {
+		.name = "mcu-mpc8349emitx",
+		.owner = THIS_MODULE,
+	},
+	.probe = mcu_probe,
+	.remove	= __devexit_p(mcu_remove),
+	.id_table = mcu_ids,
+};
+
+static int __init mcu_init(void)
+{
+	return i2c_add_driver(&mcu_driver);
+}
+module_init(mcu_init);
+
+static void __exit mcu_exit(void)
+{
+	i2c_del_driver(&mcu_driver);
+}
+module_exit(mcu_exit);
+
+MODULE_DESCRIPTION("Power Management and GPIO expander driver for "
+		   "MPC8349E-mITX-compatible MCU");
+MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>");
+MODULE_LICENSE("GPL");
diff --git a/arch/powerpc/platforms/83xx/mpc831x_rdb.c b/arch/powerpc/platforms/83xx/mpc831x_rdb.c
index 5177bdd..0b4f883 100644
--- a/arch/powerpc/platforms/83xx/mpc831x_rdb.c
+++ b/arch/powerpc/platforms/83xx/mpc831x_rdb.c
@@ -38,6 +38,8 @@ static void __init mpc831x_rdb_setup_arch(void)
 #ifdef CONFIG_PCI
 	for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
 		mpc83xx_add_bridge(np);
+	for_each_compatible_node(np, "pci", "fsl,mpc8314-pcie")
+		mpc83xx_add_bridge(np);
 #endif
 	mpc831x_usb_cfg();
 }
@@ -71,6 +73,7 @@ static int __init mpc831x_rdb_probe(void)
 
 static struct of_device_id __initdata of_bus_ids[] = {
 	{ .compatible = "simple-bus" },
+	{ .compatible = "gianfar" },
 	{},
 };
 
diff --git a/arch/powerpc/platforms/83xx/mpc832x_rdb.c b/arch/powerpc/platforms/83xx/mpc832x_rdb.c
index 2a1295f..567ded7 100644
--- a/arch/powerpc/platforms/83xx/mpc832x_rdb.c
+++ b/arch/powerpc/platforms/83xx/mpc832x_rdb.c
@@ -20,6 +20,7 @@
 #include <linux/spi/mmc_spi.h>
 #include <linux/mmc/host.h>
 #include <linux/of_platform.h>
+#include <linux/fsl_devices.h>
 
 #include <asm/time.h>
 #include <asm/ipic.h>
@@ -39,16 +40,116 @@
 #endif
 
 #ifdef CONFIG_QUICC_ENGINE
-static void mpc83xx_spi_activate_cs(u8 cs, u8 polarity)
+static int __init of_fsl_spi_probe(char *type, char *compatible, u32 sysclk,
+				   struct spi_board_info *board_infos,
+				   unsigned int num_board_infos,
+				   void (*cs_control)(struct spi_device *dev,
+						      bool on))
 {
-	pr_debug("%s %d %d\n", __func__, cs, polarity);
-	par_io_data_set(3, 13, polarity);
+	struct device_node *np;
+	unsigned int i = 0;
+
+	for_each_compatible_node(np, type, compatible) {
+		int ret;
+		unsigned int j;
+		const void *prop;
+		struct resource res[2];
+		struct platform_device *pdev;
+		struct fsl_spi_platform_data pdata = {
+			.cs_control = cs_control,
+		};
+
+		memset(res, 0, sizeof(res));
+
+		pdata.sysclk = sysclk;
+
+		prop = of_get_property(np, "reg", NULL);
+		if (!prop)
+			goto err;
+		pdata.bus_num = *(u32 *)prop;
+
+		prop = of_get_property(np, "cell-index", NULL);
+		if (prop)
+			i = *(u32 *)prop;
+
+		prop = of_get_property(np, "mode", NULL);
+		if (prop && !strcmp(prop, "cpu-qe"))
+			pdata.qe_mode = 1;
+
+		for (j = 0; j < num_board_infos; j++) {
+			if (board_infos[j].bus_num == pdata.bus_num)
+				pdata.max_chipselect++;
+		}
+
+		if (!pdata.max_chipselect)
+			continue;
+
+		ret = of_address_to_resource(np, 0, &res[0]);
+		if (ret)
+			goto err;
+
+		ret = of_irq_to_resource(np, 0, &res[1]);
+		if (ret == NO_IRQ)
+			goto err;
+
+		pdev = platform_device_alloc("mpc83xx_spi", i);
+		if (!pdev)
+			goto err;
+
+		ret = platform_device_add_data(pdev, &pdata, sizeof(pdata));
+		if (ret)
+			goto unreg;
+
+		ret = platform_device_add_resources(pdev, res,
+						    ARRAY_SIZE(res));
+		if (ret)
+			goto unreg;
+
+		ret = platform_device_add(pdev);
+		if (ret)
+			goto unreg;
+
+		goto next;
+unreg:
+		platform_device_del(pdev);
+err:
+		pr_err("%s: registration failed\n", np->full_name);
+next:
+		i++;
+	}
+
+	return i;
 }
 
-static void mpc83xx_spi_deactivate_cs(u8 cs, u8 polarity)
+static int __init fsl_spi_init(struct spi_board_info *board_infos,
+			       unsigned int num_board_infos,
+			       void (*cs_control)(struct spi_device *spi,
+						  bool on))
 {
-	pr_debug("%s %d %d\n", __func__, cs, polarity);
-	par_io_data_set(3, 13, !polarity);
+	u32 sysclk = -1;
+	int ret;
+
+	/* SPI controller is either clocked from QE or SoC clock */
+	sysclk = get_brgfreq();
+	if (sysclk == -1) {
+		sysclk = fsl_get_sys_freq();
+		if (sysclk == -1)
+			return -ENODEV;
+	}
+
+	ret = of_fsl_spi_probe(NULL, "fsl,spi", sysclk, board_infos,
+			       num_board_infos, cs_control);
+	if (!ret)
+		of_fsl_spi_probe("spi", "fsl_spi", sysclk, board_infos,
+				 num_board_infos, cs_control);
+
+	return spi_register_board_info(board_infos, num_board_infos);
+}
+
+static void mpc83xx_spi_cs_control(struct spi_device *spi, bool on)
+{
+	pr_debug("%s %d %d\n", __func__, spi->chip_select, on);
+	par_io_data_set(3, 13, on);
 }
 
 static struct mmc_spi_platform_data mpc832x_mmc_pdata = {
@@ -74,9 +175,13 @@ static int __init mpc832x_spi_init(void)
 	par_io_config_pin(3, 14, 2, 0, 0, 0); /* SD_INSERT, I */
 	par_io_config_pin(3, 15, 2, 0, 0, 0); /* SD_PROTECT,I */
 
-	return fsl_spi_init(&mpc832x_spi_boardinfo, 1,
-			    mpc83xx_spi_activate_cs,
-			    mpc83xx_spi_deactivate_cs);
+	/*
+	 * Don't bother with legacy stuff when device tree contains
+	 * mmc-spi-slot node.
+	 */
+	if (of_find_compatible_node(NULL, NULL, "mmc-spi-slot"))
+		return 0;
+	return fsl_spi_init(&mpc832x_spi_boardinfo, 1, mpc83xx_spi_cs_control);
 }
 machine_device_initcall(mpc832x_rdb, mpc832x_spi_init);
 #endif /* CONFIG_QUICC_ENGINE */
diff --git a/arch/powerpc/platforms/83xx/mpc834x_itx.c b/arch/powerpc/platforms/83xx/mpc834x_itx.c
index 76092d3..81e44fa 100644
--- a/arch/powerpc/platforms/83xx/mpc834x_itx.c
+++ b/arch/powerpc/platforms/83xx/mpc834x_itx.c
@@ -42,6 +42,7 @@
 static struct of_device_id __initdata mpc834x_itx_ids[] = {
 	{ .compatible = "fsl,pq2pro-localbus", },
 	{ .compatible = "simple-bus", },
+	{ .compatible = "gianfar", },
 	{},
 };
 
diff --git a/arch/powerpc/platforms/83xx/mpc834x_mds.c b/arch/powerpc/platforms/83xx/mpc834x_mds.c
index fc3f2ed..d0a634b 100644
--- a/arch/powerpc/platforms/83xx/mpc834x_mds.c
+++ b/arch/powerpc/platforms/83xx/mpc834x_mds.c
@@ -112,6 +112,7 @@ static struct of_device_id mpc834x_ids[] = {
 	{ .type = "soc", },
 	{ .compatible = "soc", },
 	{ .compatible = "simple-bus", },
+	{ .compatible = "gianfar", },
 	{},
 };
 
diff --git a/arch/powerpc/platforms/83xx/mpc837x_mds.c b/arch/powerpc/platforms/83xx/mpc837x_mds.c
index 530ef99..51df7e7 100644
--- a/arch/powerpc/platforms/83xx/mpc837x_mds.c
+++ b/arch/powerpc/platforms/83xx/mpc837x_mds.c
@@ -84,14 +84,10 @@ static void __init mpc837x_mds_setup_arch(void)
 		ppc_md.progress("mpc837x_mds_setup_arch()", 0);
 
 #ifdef CONFIG_PCI
-	for_each_compatible_node(np, "pci", "fsl,mpc8349-pci") {
-		if (!of_device_is_available(np)) {
-			pr_warning("%s: disabled by the firmware.\n",
-				   np->full_name);
-			continue;
-		}
+	for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
+		mpc83xx_add_bridge(np);
+	for_each_compatible_node(np, "pci", "fsl,mpc8314-pcie")
 		mpc83xx_add_bridge(np);
-	}
 #endif
 	mpc837xmds_usb_cfg();
 }
@@ -100,6 +96,7 @@ static struct of_device_id mpc837x_ids[] = {
 	{ .type = "soc", },
 	{ .compatible = "soc", },
 	{ .compatible = "simple-bus", },
+	{ .compatible = "gianfar", },
 	{},
 };
 
diff --git a/arch/powerpc/platforms/83xx/mpc837x_rdb.c b/arch/powerpc/platforms/83xx/mpc837x_rdb.c
index 1d09654..76f3b32 100644
--- a/arch/powerpc/platforms/83xx/mpc837x_rdb.c
+++ b/arch/powerpc/platforms/83xx/mpc837x_rdb.c
@@ -38,6 +38,8 @@ static void __init mpc837x_rdb_setup_arch(void)
 #ifdef CONFIG_PCI
 	for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
 		mpc83xx_add_bridge(np);
+	for_each_compatible_node(np, "pci", "fsl,mpc8314-pcie")
+		mpc83xx_add_bridge(np);
 #endif
 	mpc837x_usb_cfg();
 }
@@ -46,6 +48,7 @@ static struct of_device_id mpc837x_ids[] = {
 	{ .type = "soc", },
 	{ .compatible = "soc", },
 	{ .compatible = "simple-bus", },
+	{ .compatible = "gianfar", },
 	{},
 };
 
diff --git a/arch/powerpc/platforms/83xx/sbc834x.c b/arch/powerpc/platforms/83xx/sbc834x.c
index 156c4e2..49023db 100644
--- a/arch/powerpc/platforms/83xx/sbc834x.c
+++ b/arch/powerpc/platforms/83xx/sbc834x.c
@@ -84,6 +84,7 @@ static struct __initdata of_device_id sbc834x_ids[] = {
 	{ .type = "soc", },
 	{ .compatible = "soc", },
 	{ .compatible = "simple-bus", },
+	{ .compatible = "gianfar", },
 	{},
 };
 
diff --git a/arch/powerpc/platforms/83xx/usb.c b/arch/powerpc/platforms/83xx/usb.c
index cc99c28..11e1fac 100644
--- a/arch/powerpc/platforms/83xx/usb.c
+++ b/arch/powerpc/platforms/83xx/usb.c
@@ -14,6 +14,7 @@
 #include <linux/stddef.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
+#include <linux/of.h>
 
 #include <asm/io.h>
 #include <asm/prom.h>
@@ -210,7 +211,7 @@ int mpc837x_usb_cfg(void)
 	int ret = 0;
 
 	np = of_find_compatible_node(NULL, NULL, "fsl-usb2-dr");
-	if (!np)
+	if (!np || !of_device_is_available(np))
 		return -ENODEV;
 	prop = of_get_property(np, "phy_type", NULL);