Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel…

…/git/hskinnemoen/avr32-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6:
  [AVR32] Fix random segfault with preemption
  [AVR32] Don't use __builtin_xchg()
  [AVR32] ngw100 i2c-gpio tweaks
  [AVR32] Ignore a few irrelevant syscalls
  [AVR32] SMC configuration in clock cycles
  [AVR32] Drop support for redundant "keepinitrd" boot-time parm.
  [AVR32] Make dma_sync_*_for_cpu no-ops
  [AVR32] Remove unneeded 8K alignment of .text section
  [AVR32] Kill a few hardcoded constants in vmlinux.lds
  [AVR32] rename vmlinux.lds
  [AVR32] fix command line parsing in early_parse_fbmem
  [AVR32] checkstack support
  [AVR32] Wire up USBA device
  [AVR32] add multidrive support for pio driver
  [AVR32] /sys/kernel/debug/at32ap_clk
  [AVR32] Move AT32_PM_BASE definition into pm.h

arch/avr32/boards/atngw100/flash.c

@@ -15,7 +15,7 @@
 
 #include <asm/arch/smc.h>
 
-static struct smc_config flash_config __initdata = {
+static struct smc_timing flash_timing __initdata = {
 	.ncs_read_setup		= 0,
 	.nrd_setup		= 40,
 	.ncs_write_setup	= 0,
@@ -28,7 +28,9 @@ static struct smc_config flash_config __initdata = {
 
 	.read_cycle		= 120,
 	.write_cycle		= 120,
+};
 
+static struct smc_config flash_config __initdata = {
 	.bus_width		= 2,
 	.nrd_controlled		= 1,
 	.nwe_controlled		= 1,
@@ -82,6 +84,7 @@ static int __init atngw100_flash_init(void)
 {
 	int ret;
 
+	smc_set_timing(&flash_config, &flash_timing);
 	ret = smc_set_configuration(0, &flash_config);
 	if (ret < 0) {
 		printk(KERN_ERR "atngw100: failed to set NOR flash timing\n");

arch/avr32/boards/atngw100/setup.c

@@ -125,8 +125,11 @@ static struct platform_device ngw_gpio_leds = {
 };
 
 static struct i2c_gpio_platform_data i2c_gpio_data = {
-	.sda_pin	= GPIO_PIN_PA(6),
-	.scl_pin	= GPIO_PIN_PA(7),
+	.sda_pin		= GPIO_PIN_PA(6),
+	.scl_pin		= GPIO_PIN_PA(7),
+	.sda_is_open_drain	= 1,
+	.scl_is_open_drain	= 1,
+	.udelay			= 2,	/* close to 100 kHz */
 };
 
 static struct platform_device i2c_gpio_device = {
@@ -154,15 +157,18 @@ static int __init atngw100_init(void)
 	set_hw_addr(at32_add_device_eth(1, &eth_data[1]));
 
 	at32_add_device_spi(0, spi0_board_info, ARRAY_SIZE(spi0_board_info));
+	at32_add_device_usba(0, NULL);
 
 	for (i = 0; i < ARRAY_SIZE(ngw_leds); i++) {
 		at32_select_gpio(ngw_leds[i].gpio,
 				AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);
 	}
 	platform_device_register(&ngw_gpio_leds);
 
-	at32_select_gpio(i2c_gpio_data.sda_pin, 0);
-	at32_select_gpio(i2c_gpio_data.scl_pin, 0);
+	at32_select_gpio(i2c_gpio_data.sda_pin,
+		AT32_GPIOF_MULTIDRV | AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);
+	at32_select_gpio(i2c_gpio_data.scl_pin,
+		AT32_GPIOF_MULTIDRV | AT32_GPIOF_OUTPUT | AT32_GPIOF_HIGH);
 	platform_device_register(&i2c_gpio_device);
 
 	return 0;

arch/avr32/boards/atstk1000/atstk1002.c

@@ -241,6 +241,7 @@ static int __init atstk1002_init(void)
 	at32_add_device_lcdc(0, &atstk1000_lcdc_data,
 			     fbmem_start, fbmem_size);
 #endif
+	at32_add_device_usba(0, NULL);
 #ifndef CONFIG_BOARD_ATSTK1002_SW3_CUSTOM
 	at32_add_device_ssc(0, ATMEL_SSC_TX);
 #endif

arch/avr32/boards/atstk1000/flash.c

@@ -15,7 +15,7 @@
 
 #include <asm/arch/smc.h>
 
-static struct smc_config flash_config __initdata = {
+static struct smc_timing flash_timing __initdata = {
 	.ncs_read_setup		= 0,
 	.nrd_setup		= 40,
 	.ncs_write_setup	= 0,
@@ -28,7 +28,9 @@ static struct smc_config flash_config __initdata = {
 
 	.read_cycle		= 120,
 	.write_cycle		= 120,
+};
 
+static struct smc_config flash_config __initdata = {
 	.bus_width		= 2,
 	.nrd_controlled		= 1,
 	.nwe_controlled		= 1,
@@ -82,6 +84,7 @@ static int __init atstk1000_flash_init(void)
 {
 	int ret;
 
+	smc_set_timing(&flash_config, &flash_timing);
 	ret = smc_set_configuration(0, &flash_config);
 	if (ret < 0) {
 		printk(KERN_ERR "atstk1000: failed to set NOR flash timing\n");

arch/avr32/kernel/Makefile

@@ -11,8 +11,3 @@ obj-y				+= signal.o sys_avr32.o process.o time.o
 obj-y				+= init_task.o switch_to.o cpu.o
 obj-$(CONFIG_MODULES)		+= module.o avr32_ksyms.o
 obj-$(CONFIG_KPROBES)		+= kprobes.o
-
-USE_STANDARD_AS_RULE		:= true
-
-%.lds: %.lds.c FORCE
-	$(call if_changed_dep,cpp_lds_S)

arch/avr32/kernel/entry-avr32b.S

@@ -159,11 +159,18 @@ handle_vmalloc_miss:
 
 	.section .scall.text,"ax",@progbits
 system_call:
+#ifdef CONFIG_PREEMPT
+	mask_interrupts
+#endif
 	pushm	r12		/* r12_orig */
 	stmts	--sp, r0-lr
-	zero_fp
+
 	mfsr	r0, SYSREG_RAR_SUP
 	mfsr	r1, SYSREG_RSR_SUP
+#ifdef CONFIG_PREEMPT
+	unmask_interrupts
+#endif
+	zero_fp
 	stm	--sp, r0-r1
 
 	/* check for syscall tracing */
@@ -638,6 +645,13 @@ irq_level\level:
 	stmts	--sp,r0-lr
 	mfsr	r8, rar_int\level
 	mfsr	r9, rsr_int\level
+
+#ifdef CONFIG_PREEMPT
+	sub	r11, pc, (. - system_call)
+	cp.w	r11, r8
+	breq	4f
+#endif
+
 	pushm	r8-r9
 
 	mov	r11, sp
@@ -668,6 +682,16 @@ irq_level\level:
 	sub	sp, -4		/* ignore r12_orig */
 	rete
 
+#ifdef CONFIG_PREEMPT
+4:	mask_interrupts
+	mfsr	r8, rsr_int\level
+	sbr	r8, 16
+	mtsr	rsr_int\level, r8
+	ldmts	sp++, r0-lr
+	sub	sp, -4		/* ignore r12_orig */
+	rete
+#endif
+
 2:	get_thread_info	r0
 	ld.w	r1, r0[TI_flags]
 	bld	r1, TIF_CPU_GOING_TO_SLEEP

arch/avr32/kernel/setup.c

@@ -248,7 +248,7 @@ static int __init early_parse_fbmem(char *p)
 
 	fbmem_size = memparse(p, &p);
 	if (*p == '@') {
-		fbmem_start = memparse(p, &p);
+		fbmem_start = memparse(p + 1, &p);
 		ret = add_reserved_region(fbmem_start,
 					  fbmem_start + fbmem_size - 1,
 					  "Framebuffer");

arch/avr32/kernel/vmlinux.lds.c → arch/avr32/kernel/vmlinux.lds.S

@@ -9,6 +9,8 @@
  */
 #define LOAD_OFFSET 0x00000000
 #include <asm-generic/vmlinux.lds.h>
+#include <asm/cache.h>
+#include <asm/thread_info.h>
 
 OUTPUT_FORMAT("elf32-avr32", "elf32-avr32", "elf32-avr32")
 OUTPUT_ARCH(avr32)
@@ -58,11 +60,10 @@ SECTIONS
 			*(.init.ramfs)
 		__initramfs_end = .;
 #endif
-		. = ALIGN(4096);
+		. = ALIGN(PAGE_SIZE);
 		__init_end = .;
 	}
 
-	. = ALIGN(8192);
 	.text		: AT(ADDR(.text) - LOAD_OFFSET) {
 		_evba = .;
 		_text = .;
@@ -96,7 +97,7 @@ SECTIONS
 
 	RODATA
 
-	. = ALIGN(8192);
+	. = ALIGN(THREAD_SIZE);
 
 	.data		: AT(ADDR(.data) - LOAD_OFFSET) {
 		_data = .;
@@ -107,7 +108,7 @@ SECTIONS
 		*(.data.init_task)
 
 		/* Then, the cacheline aligned data */
-		. = ALIGN(32);
+		. = ALIGN(L1_CACHE_BYTES);
 		*(.data.cacheline_aligned)
 
 		/* And the rest... */

arch/avr32/mach-at32ap/at32ap7000.c

@@ -25,12 +25,6 @@
 #include "pio.h"
 #include "pm.h"
 
-/*
- * We can reduce the code size a bit by using a constant here. Since
- * this file is completely chip-specific, it's safe to not use
- * ioremap. Generic drivers should of course never do this.
- */
-#define AT32_PM_BASE	0xfff00000
 
 #define PBMEM(base)					\
 	{						\
@@ -1167,6 +1161,72 @@ at32_add_device_ssc(unsigned int id, unsigned int flags)
 	return pdev;
 }
 
+/* --------------------------------------------------------------------
+ *  USB Device Controller
+ * -------------------------------------------------------------------- */
+static struct resource usba0_resource[] __initdata = {
+	{
+		.start		= 0xff300000,
+		.end		= 0xff3fffff,
+		.flags		= IORESOURCE_MEM,
+	}, {
+		.start		= 0xfff03000,
+		.end		= 0xfff033ff,
+		.flags		= IORESOURCE_MEM,
+	},
+	IRQ(31),
+};
+static struct clk usba0_pclk = {
+	.name		= "pclk",
+	.parent		= &pbb_clk,
+	.mode		= pbb_clk_mode,
+	.get_rate	= pbb_clk_get_rate,
+	.index		= 12,
+};
+static struct clk usba0_hclk = {
+	.name		= "hclk",
+	.parent		= &hsb_clk,
+	.mode		= hsb_clk_mode,
+	.get_rate	= hsb_clk_get_rate,
+	.index		= 6,
+};
+
+struct platform_device *__init
+at32_add_device_usba(unsigned int id, struct usba_platform_data *data)
+{
+	struct platform_device *pdev;
+
+	if (id != 0)
+		return NULL;
+
+	pdev = platform_device_alloc("atmel_usba_udc", 0);
+	if (!pdev)
+		return NULL;
+
+	if (platform_device_add_resources(pdev, usba0_resource,
+					  ARRAY_SIZE(usba0_resource)))
+		goto out_free_pdev;
+
+	if (data) {
+		if (platform_device_add_data(pdev, data, sizeof(*data)))
+			goto out_free_pdev;
+
+		if (data->vbus_pin != GPIO_PIN_NONE)
+			at32_select_gpio(data->vbus_pin, 0);
+	}
+
+	usba0_pclk.dev = &pdev->dev;
+	usba0_hclk.dev = &pdev->dev;
+
+	platform_device_add(pdev);
+
+	return pdev;
+
+out_free_pdev:
+	platform_device_put(pdev);
+	return NULL;
+}
+
 /* --------------------------------------------------------------------
  *  GCLK
  * -------------------------------------------------------------------- */
@@ -1252,6 +1312,8 @@ struct clk *at32_clock_list[] = {
 	&ssc0_pclk,
 	&ssc1_pclk,
 	&ssc2_pclk,
+	&usba0_hclk,
+	&usba0_pclk,
 	&gclk0,
 	&gclk1,
 	&gclk2,