12 files changed, 59 insertions, 56 deletions

diff --git a/arch/mips/alchemy/Kconfig b/arch/mips/alchemy/Kconfig
index 69734120ada1..6ca81e1bd35c 100644
--- a/arch/mips/alchemy/Kconfig
+++ b/arch/mips/alchemy/Kconfig
@@ -14,6 +14,7 @@ config MIPS_DB1XXX
 	bool "Alchemy DB1XXX / PB1XXX boards"
 	select GPIOLIB
 	select HAVE_PCI
+	select HAVE_PATA_PLATFORM
 	select SYS_SUPPORTS_LITTLE_ENDIAN
 	select SYS_HAS_EARLY_PRINTK
 	help
diff --git a/arch/mips/alchemy/common/clock.c b/arch/mips/alchemy/common/clock.c
index c01be8c45271..6c8996e20a7d 100644
--- a/arch/mips/alchemy/common/clock.c
+++ b/arch/mips/alchemy/common/clock.c
@@ -771,7 +771,7 @@ static int __init alchemy_clk_init_fgens(int ctype)
 	}
 	id.flags = CLK_SET_RATE_PARENT | CLK_GET_RATE_NOCACHE;
 
-	a = kzalloc((sizeof(*a)) * 6, GFP_KERNEL);
+	a = kcalloc(6, sizeof(*a), GFP_KERNEL);
 	if (!a)
 		return -ENOMEM;
 
diff --git a/arch/mips/alchemy/common/dbdma.c b/arch/mips/alchemy/common/dbdma.c
index 5ab043000409..6a3c890f7bbf 100644
--- a/arch/mips/alchemy/common/dbdma.c
+++ b/arch/mips/alchemy/common/dbdma.c
@@ -30,6 +30,7 @@
  *
  */
 
+#include <linux/dma-map-ops.h> /* for dma_default_coherent */
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/slab.h>
@@ -623,17 +624,18 @@ u32 au1xxx_dbdma_put_source(u32 chanid, dma_addr_t buf, int nbytes, u32 flags)
 		dp->dscr_cmd0 &= ~DSCR_CMD0_IE;
 
 	/*
-	 * There is an errata on the Au1200/Au1550 parts that could result
-	 * in "stale" data being DMA'ed. It has to do with the snoop logic on
-	 * the cache eviction buffer.  DMA_NONCOHERENT is on by default for
-	 * these parts. If it is fixed in the future, these dma_cache_inv will
-	 * just be nothing more than empty macros. See io.h.
+	 * There is an erratum on certain Au1200/Au1550 revisions that could
+	 * result in "stale" data being DMA'ed. It has to do with the snoop
+	 * logic on the cache eviction buffer.  dma_default_coherent is set
+	 * to false on these parts.
 	 */
-	dma_cache_wback_inv((unsigned long)buf, nbytes);
+	if (!dma_default_coherent)
+		dma_cache_wback_inv(KSEG0ADDR(buf), nbytes);
 	dp->dscr_cmd0 |= DSCR_CMD0_V;	/* Let it rip */
 	wmb(); /* drain writebuffer */
 	dma_cache_wback_inv((unsigned long)dp, sizeof(*dp));
 	ctp->chan_ptr->ddma_dbell = 0;
+	wmb(); /* force doorbell write out to dma engine */
 
 	/* Get next descriptor pointer. */
 	ctp->put_ptr = phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
@@ -685,17 +687,18 @@ u32 au1xxx_dbdma_put_dest(u32 chanid, dma_addr_t buf, int nbytes, u32 flags)
 			  dp->dscr_source1, dp->dscr_dest0, dp->dscr_dest1);
 #endif
 	/*
-	 * There is an errata on the Au1200/Au1550 parts that could result in
-	 * "stale" data being DMA'ed. It has to do with the snoop logic on the
-	 * cache eviction buffer.  DMA_NONCOHERENT is on by default for these
-	 * parts. If it is fixed in the future, these dma_cache_inv will just
-	 * be nothing more than empty macros. See io.h.
+	 * There is an erratum on certain Au1200/Au1550 revisions that could
+	 * result in "stale" data being DMA'ed. It has to do with the snoop
+	 * logic on the cache eviction buffer.  dma_default_coherent is set
+	 * to false on these parts.
 	 */
-	dma_cache_inv((unsigned long)buf, nbytes);
+	if (!dma_default_coherent)
+		dma_cache_inv(KSEG0ADDR(buf), nbytes);
 	dp->dscr_cmd0 |= DSCR_CMD0_V;	/* Let it rip */
 	wmb(); /* drain writebuffer */
 	dma_cache_wback_inv((unsigned long)dp, sizeof(*dp));
 	ctp->chan_ptr->ddma_dbell = 0;
+	wmb(); /* force doorbell write out to dma engine */
 
 	/* Get next descriptor pointer. */
 	ctp->put_ptr = phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
diff --git a/arch/mips/alchemy/common/gpiolib.c b/arch/mips/alchemy/common/gpiolib.c
index a17d7a8909c4..1b16daaa86ae 100644
--- a/arch/mips/alchemy/common/gpiolib.c
+++ b/arch/mips/alchemy/common/gpiolib.c
@@ -31,7 +31,7 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/types.h>
-#include <linux/gpio.h>
+#include <linux/gpio/driver.h>
 #include <asm/mach-au1x00/gpio-au1000.h>
 #include <asm/mach-au1x00/gpio-au1300.h>
 
diff --git a/arch/mips/alchemy/common/platform.c b/arch/mips/alchemy/common/platform.c
index b8f3397c59c9..d4ab34b3b404 100644
--- a/arch/mips/alchemy/common/platform.c
+++ b/arch/mips/alchemy/common/platform.c
@@ -51,9 +51,9 @@ static void alchemy_8250_pm(struct uart_port *port, unsigned int state,
 #define PORT(_base, _irq)					\
 	{							\
 		.mapbase	= _base,			\
+		.mapsize	= 0x1000,			\
 		.irq		= _irq,				\
 		.regshift	= 2,				\
-		.iotype		= UPIO_AU,			\
 		.flags		= UPF_SKIP_TEST | UPF_IOREMAP | \
 				  UPF_FIXED_TYPE,		\
 		.type		= PORT_16550A,			\
@@ -124,8 +124,14 @@ static void __init alchemy_setup_uarts(int ctype)
 	au1xx0_uart_device.dev.platform_data = ports;
 
 	/* Fill up uartclk. */
-	for (s = 0; s < c; s++)
+	for (s = 0; s < c; s++) {
 		ports[s].uartclk = uartclk;
+		if (au_platform_setup(&ports[s]) < 0) {
+			kfree(ports);
+			printk(KERN_INFO "Alchemy: missing support for UARTs\n");
+			return;
+		}
+	}
 	if (platform_device_register(&au1xx0_uart_device))
 		printk(KERN_INFO "Alchemy: failed to register UARTs\n");
 }
diff --git a/arch/mips/alchemy/common/prom.c b/arch/mips/alchemy/common/prom.c
index b13d8adf3be4..20d30f6265cd 100644
--- a/arch/mips/alchemy/common/prom.c
+++ b/arch/mips/alchemy/common/prom.c
@@ -40,6 +40,7 @@
 #include <linux/string.h>
 
 #include <asm/bootinfo.h>
+#include <prom.h>
 
 int prom_argc;
 char **prom_argv;
diff --git a/arch/mips/alchemy/common/setup.c b/arch/mips/alchemy/common/setup.c
index 2388d68786f4..a7a6d31a7a41 100644
--- a/arch/mips/alchemy/common/setup.c
+++ b/arch/mips/alchemy/common/setup.c
@@ -30,13 +30,11 @@
 #include <linux/mm.h>
 #include <linux/dma-map-ops.h> /* for dma_default_coherent */
 
+#include <asm/bootinfo.h>
 #include <asm/mipsregs.h>
 
 #include <au1000.h>
 
-extern void __init board_setup(void);
-extern void __init alchemy_set_lpj(void);
-
 static bool alchemy_dma_coherent(void)
 {
 	switch (alchemy_get_cputype()) {
diff --git a/arch/mips/alchemy/devboards/db1000.c b/arch/mips/alchemy/devboards/db1000.c
index 2c52ee27b4f2..7b9f91db227f 100644
--- a/arch/mips/alchemy/devboards/db1000.c
+++ b/arch/mips/alchemy/devboards/db1000.c
@@ -14,7 +14,6 @@
 #include <linux/interrupt.h>
 #include <linux/leds.h>
 #include <linux/mmc/host.h>
-#include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/pm.h>
 #include <linux/spi/spi.h>
@@ -165,14 +164,10 @@ static struct platform_device db1x00_audio_dev = {
 
 /******************************************************************************/
 
+#ifdef CONFIG_MMC_AU1X
 static irqreturn_t db1100_mmc_cd(int irq, void *ptr)
 {
-	void (*mmc_cd)(struct mmc_host *, unsigned long);
-	/* link against CONFIG_MMC=m */
-	mmc_cd = symbol_get(mmc_detect_change);
-	mmc_cd(ptr, msecs_to_jiffies(500));
-	symbol_put(mmc_detect_change);
-
+	mmc_detect_change(ptr, msecs_to_jiffies(500));
 	return IRQ_HANDLED;
 }
 
@@ -375,19 +370,28 @@ static struct platform_device db1100_mmc1_dev = {
 	.num_resources	= ARRAY_SIZE(au1100_mmc1_res),
 	.resource	= au1100_mmc1_res,
 };
+#endif /* CONFIG_MMC_AU1X */
 
 /******************************************************************************/
 
 static struct ads7846_platform_data db1100_touch_pd = {
 	.model		= 7846,
 	.vref_mv	= 3300,
-	.gpio_pendown	= 21,
 };
 
 static struct spi_gpio_platform_data db1100_spictl_pd = {
 	.num_chipselect = 1,
 };
 
+static struct gpiod_lookup_table db1100_touch_gpio_table = {
+	.dev_id = "spi0.0",
+	.table = {
+		GPIO_LOOKUP("alchemy-gpio2", 21,
+			    "pendown", GPIO_ACTIVE_LOW),
+		{ }
+	},
+};
+
 static struct spi_board_info db1100_spi_info[] __initdata = {
 	[0] = {
 		.modalias	 = "ads7846",
@@ -438,8 +442,10 @@ static struct platform_device *db1x00_devs[] = {
 
 static struct platform_device *db1100_devs[] = {
 	&au1100_lcd_device,
+#ifdef CONFIG_MMC_AU1X
 	&db1100_mmc0_dev,
 	&db1100_mmc1_dev,
+#endif
 };
 
 int __init db1000_dev_setup(void)
@@ -474,6 +480,7 @@ int __init db1000_dev_setup(void)
 		pfc |= (1 << 0);	/* SSI0 pins as GPIOs */
 		alchemy_wrsys(pfc, AU1000_SYS_PINFUNC);
 
+		gpiod_add_lookup_table(&db1100_touch_gpio_table);
 		spi_register_board_info(db1100_spi_info,
 					ARRAY_SIZE(db1100_spi_info));
 
diff --git a/arch/mips/alchemy/devboards/db1200.c b/arch/mips/alchemy/devboards/db1200.c
index 1864eb935ca5..67f067706af2 100644
--- a/arch/mips/alchemy/devboards/db1200.c
+++ b/arch/mips/alchemy/devboards/db1200.c
@@ -10,7 +10,6 @@
 #include <linux/gpio.h>
 #include <linux/i2c.h>
 #include <linux/init.h>
-#include <linux/module.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/leds.h>
@@ -327,6 +326,7 @@ static struct platform_device db1200_ide_dev = {
 
 /**********************************************************************/
 
+#ifdef CONFIG_MMC_AU1X
 /* SD carddetects:  they're supposed to be edge-triggered, but ack
  * doesn't seem to work (CPLD Rev 2).  Instead, the screaming one
  * is disabled and its counterpart enabled.  The 200ms timeout is
@@ -340,14 +340,7 @@ static irqreturn_t db1200_mmc_cd(int irq, void *ptr)
 
 static irqreturn_t db1200_mmc_cdfn(int irq, void *ptr)
 {
-	void (*mmc_cd)(struct mmc_host *, unsigned long);
-
-	/* link against CONFIG_MMC=m */
-	mmc_cd = symbol_get(mmc_detect_change);
-	if (mmc_cd) {
-		mmc_cd(ptr, msecs_to_jiffies(200));
-		symbol_put(mmc_detect_change);
-	}
+	mmc_detect_change(ptr, msecs_to_jiffies(200));
 
 	msleep(100);	/* debounce */
 	if (irq == DB1200_SD0_INSERT_INT)
@@ -431,14 +424,7 @@ static irqreturn_t pb1200_mmc1_cd(int irq, void *ptr)
 
 static irqreturn_t pb1200_mmc1_cdfn(int irq, void *ptr)
 {
-	void (*mmc_cd)(struct mmc_host *, unsigned long);
-
-	/* link against CONFIG_MMC=m */
-	mmc_cd = symbol_get(mmc_detect_change);
-	if (mmc_cd) {
-		mmc_cd(ptr, msecs_to_jiffies(200));
-		symbol_put(mmc_detect_change);
-	}
+	mmc_detect_change(ptr, msecs_to_jiffies(200));
 
 	msleep(100);	/* debounce */
 	if (irq == PB1200_SD1_INSERT_INT)
@@ -599,6 +585,7 @@ static struct platform_device pb1200_mmc1_dev = {
 	.num_resources	= ARRAY_SIZE(au1200_mmc1_res),
 	.resource	= au1200_mmc1_res,
 };
+#endif /* CONFIG_MMC_AU1X */
 
 /**********************************************************************/
 
@@ -766,7 +753,9 @@ static struct platform_device db1200_audiodma_dev = {
 static struct platform_device *db1200_devs[] __initdata = {
 	NULL,		/* PSC0, selected by S6.8 */
 	&db1200_ide_dev,
+#ifdef CONFIG_MMC_AU1X
 	&db1200_mmc0_dev,
+#endif
 	&au1200_lcd_dev,
 	&db1200_eth_dev,
 	&db1200_nand_dev,
@@ -777,7 +766,9 @@ static struct platform_device *db1200_devs[] __initdata = {
 };
 
 static struct platform_device *pb1200_devs[] __initdata = {
+#ifdef CONFIG_MMC_AU1X
 	&pb1200_mmc1_dev,
+#endif
 };
 
 /* Some peripheral base addresses differ on the PB1200 */
@@ -856,7 +847,7 @@ int __init db1200_dev_setup(void)
 	i2c_register_board_info(0, db1200_i2c_devs,
 				ARRAY_SIZE(db1200_i2c_devs));
 	spi_register_board_info(db1200_spi_devs,
-				ARRAY_SIZE(db1200_i2c_devs));
+				ARRAY_SIZE(db1200_spi_devs));
 
 	/* SWITCHES:	S6.8 I2C/SPI selector  (OFF=I2C	 ON=SPI)
 	 *		S6.7 AC97/I2S selector (OFF=AC97 ON=I2S)
diff --git a/arch/mips/alchemy/devboards/db1300.c b/arch/mips/alchemy/devboards/db1300.c
index e70e529ddd91..d377e043b49f 100644
--- a/arch/mips/alchemy/devboards/db1300.c
+++ b/arch/mips/alchemy/devboards/db1300.c
@@ -17,7 +17,6 @@
 #include <linux/interrupt.h>
 #include <linux/ata_platform.h>
 #include <linux/mmc/host.h>
-#include <linux/module.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/platnand.h>
 #include <linux/platform_device.h>
@@ -451,6 +450,7 @@ static struct platform_device db1300_ide_dev = {
 
 /**********************************************************************/
 
+#ifdef CONFIG_MMC_AU1X
 static irqreturn_t db1300_mmc_cd(int irq, void *ptr)
 {
 	disable_irq_nosync(irq);
@@ -459,14 +459,7 @@ static irqreturn_t db1300_mmc_cd(int irq, void *ptr)
 
 static irqreturn_t db1300_mmc_cdfn(int irq, void *ptr)
 {
-	void (*mmc_cd)(struct mmc_host *, unsigned long);
-
-	/* link against CONFIG_MMC=m.  We can only be called once MMC core has
-	 * initialized the controller, so symbol_get() should always succeed.
-	 */
-	mmc_cd = symbol_get(mmc_detect_change);
-	mmc_cd(ptr, msecs_to_jiffies(200));
-	symbol_put(mmc_detect_change);
+	mmc_detect_change(ptr, msecs_to_jiffies(200));
 
 	msleep(100);	/* debounce */
 	if (irq == DB1300_SD1_INSERT_INT)
@@ -640,6 +633,7 @@ static struct platform_device db1300_sd0_dev = {
 	.resource	= au1300_sd0_res,
 	.num_resources	= ARRAY_SIZE(au1300_sd0_res),
 };
+#endif /* CONFIG_MMC_AU1X */
 
 /**********************************************************************/
 
@@ -775,8 +769,10 @@ static struct platform_device *db1300_dev[] __initdata = {
 	&db1300_5waysw_dev,
 	&db1300_nand_dev,
 	&db1300_ide_dev,
+#ifdef CONFIG_MMC_AU1X
 	&db1300_sd0_dev,
 	&db1300_sd1_dev,
+#endif
 	&db1300_lcd_dev,
 	&db1300_ac97_dev,
 	&db1300_i2s_dev,
diff --git a/arch/mips/alchemy/devboards/db1550.c b/arch/mips/alchemy/devboards/db1550.c
index fd91d9c9a252..6c6837181f55 100644
--- a/arch/mips/alchemy/devboards/db1550.c
+++ b/arch/mips/alchemy/devboards/db1550.c
@@ -589,7 +589,7 @@ int __init db1550_dev_setup(void)
 	i2c_register_board_info(0, db1550_i2c_devs,
 				ARRAY_SIZE(db1550_i2c_devs));
 	spi_register_board_info(db1550_spi_devs,
-				ARRAY_SIZE(db1550_i2c_devs));
+				ARRAY_SIZE(db1550_spi_devs));
 
 	c = clk_get(NULL, "psc0_intclk");
 	if (!IS_ERR(c)) {
diff --git a/arch/mips/alchemy/devboards/pm.c b/arch/mips/alchemy/devboards/pm.c
index 73c77814687a..b17a0d199851 100644
--- a/arch/mips/alchemy/devboards/pm.c
+++ b/arch/mips/alchemy/devboards/pm.c
@@ -17,7 +17,7 @@
  * Generic suspend userspace interface for Alchemy development boards.
  * This code exports a few sysfs nodes under /sys/power/db1x/ which
  * can be used by userspace to en/disable all au1x-provided wakeup
- * sources and configure the timeout after which the the TOYMATCH2 irq
+ * sources and configure the timeout after which the TOYMATCH2 irq
  * is to trigger a wakeup.
  */