Merge tag 'dropmachtimexh-v2' of git://git.pengutronix.de/git/ukl/linux into next/cleanup

This cleanup series gets rid of <mach/timex.h> for platforms not using
ARCH_MULTIPLATFORM. (For multi-platform code it's already unused since
387798b3 (ARM: initial multiplatform support).)

To make this work some code out of arch/arm needed to be adapted. The
respective changes got acks by their maintainers to be taken via armsoc
(with Andrew Morton substituting for Alessandro Zummo as rtc maintainer).

Compared to the previous pull request there was another patch added that
fixes a (non-critical) regression on ixp4xx. Olof Johansson asked to not
squash this fix into the original commit to save him from the need to
reverify the series.

* tag 'dropmachtimexh-v2' of git://git.pengutronix.de/git/ukl/linux:
  ARM: ixp4xx: fix timer latch calculation
  ARM: drop <mach/timex.h> for !ARCH_MULTIPLATFORM, too
  ARM: rpc: stop using <mach/timex.h>
  ARM: ixp4xx: stop using <mach/timex.h>
  input: ixp4xx-beeper: don't use symbols from <mach/timex.h>
  ARM: at91: don't use <mach/timex.h>
  ARM: ep93xx: stop using mach/timex.h
  ARM: mmp: stop using mach/timex.h
  ARM: netx: stop using mach/timex.h
  ARM: sa1100: stop using mach/timex.h
  clocksource: sirf/marco+prima2: drop usage of CLOCK_TICK_RATE
  rtc: pxa: drop unused #define TIMER_FREQ
  rtc: at91sam9: include <mach/hardware.h> explicitly
  ARM/serial: at91: switch atmel serial to use gpiolib
Signed-off-by: Olof Johansson <olof@lixom.net>

Documentation/devicetree/bindings/serial/atmel-usart.txt

@@ -13,6 +13,8 @@ Required properties:
 Optional properties:
 - atmel,use-dma-rx: use of PDC or DMA for receiving data
 - atmel,use-dma-tx: use of PDC or DMA for transmitting data
+- rts-gpios: specify a GPIO for RTS line. It will use specified PIO instead of the peripheral
+  function pin for the USART RTS feature. If unsure, don't specify this property.
 - add dma bindings for dma transfer:
 	- dmas: DMA specifier, consisting of a phandle to DMA controller node,
 		memory peripheral interface and USART DMA channel ID, FIFO configuration.
@@ -33,6 +35,7 @@ Example:
 		clock-names = "usart";
 		atmel,use-dma-rx;
 		atmel,use-dma-tx;
+		rts-gpios = <&pioD 15 0>;
 	};
 
 - use DMA:

arch/arm/include/asm/timex.h

@@ -12,12 +12,6 @@
 #ifndef _ASMARM_TIMEX_H
 #define _ASMARM_TIMEX_H
 
-#ifdef CONFIG_ARCH_MULTIPLATFORM
-#define CLOCK_TICK_RATE 1000000
-#else
-#include <mach/timex.h>
-#endif
-
 typedef unsigned long cycles_t;
 #define get_cycles()	({ cycles_t c; read_current_timer(&c) ? 0 : c; })
 

arch/arm/mach-at91/at91rm9200.c

@@ -21,6 +21,7 @@
 #include <mach/at91rm9200.h>
 #include <mach/at91_st.h>
 #include <mach/cpu.h>
+#include <mach/hardware.h>
 
 #include "at91_aic.h"
 #include "soc.h"

arch/arm/mach-at91/at91rm9200_devices.c

@@ -21,6 +21,7 @@
 #include <mach/at91rm9200.h>
 #include <mach/at91rm9200_mc.h>
 #include <mach/at91_ramc.h>
+#include <mach/hardware.h>
 
 #include "board.h"
 #include "generic.h"
@@ -922,6 +923,7 @@ static struct resource dbgu_resources[] = {
 static struct atmel_uart_data dbgu_data = {
 	.use_dma_tx	= 0,
 	.use_dma_rx	= 0,		/* DBGU not capable of receive DMA */
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 dbgu_dmamask = DMA_BIT_MASK(32);
@@ -960,6 +962,7 @@ static struct resource uart0_resources[] = {
 static struct atmel_uart_data uart0_data = {
 	.use_dma_tx	= 1,
 	.use_dma_rx	= 1,
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 uart0_dmamask = DMA_BIT_MASK(32);
@@ -987,9 +990,10 @@ static inline void configure_usart0_pins(unsigned pins)
 	if (pins & ATMEL_UART_RTS) {
 		/*
 		 * AT91RM9200 Errata #39 - RTS0 is not internally connected to PA21.
-		 *  We need to drive the pin manually.  Default is off (RTS is active low).
+		 * We need to drive the pin manually. The serial driver will driver
+		 * this to high when initializing.
 		 */
-		at91_set_gpio_output(AT91_PIN_PA21, 1);
+		uart0_data.rts_gpio = AT91_PIN_PA21;
 	}
 }
 
@@ -1009,6 +1013,7 @@ static struct resource uart1_resources[] = {
 static struct atmel_uart_data uart1_data = {
 	.use_dma_tx	= 1,
 	.use_dma_rx	= 1,
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 uart1_dmamask = DMA_BIT_MASK(32);
@@ -1060,6 +1065,7 @@ static struct resource uart2_resources[] = {
 static struct atmel_uart_data uart2_data = {
 	.use_dma_tx	= 1,
 	.use_dma_rx	= 1,
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 uart2_dmamask = DMA_BIT_MASK(32);
@@ -1103,6 +1109,7 @@ static struct resource uart3_resources[] = {
 static struct atmel_uart_data uart3_data = {
 	.use_dma_tx	= 1,
 	.use_dma_rx	= 1,
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 uart3_dmamask = DMA_BIT_MASK(32);

arch/arm/mach-at91/at91rm9200_time.c

@@ -31,6 +31,7 @@
 #include <asm/mach/time.h>
 
 #include <mach/at91_st.h>
+#include <mach/hardware.h>
 
 static unsigned long last_crtr;
 static u32 irqmask;

arch/arm/mach-at91/at91sam9260.c

@@ -21,6 +21,7 @@
 #include <mach/cpu.h>
 #include <mach/at91_dbgu.h>
 #include <mach/at91sam9260.h>
+#include <mach/hardware.h>
 
 #include "at91_aic.h"
 #include "at91_rstc.h"

arch/arm/mach-at91/at91sam9260_devices.c

@@ -25,6 +25,7 @@
 #include <mach/at91_matrix.h>
 #include <mach/at91sam9_smc.h>
 #include <mach/at91_adc.h>
+#include <mach/hardware.h>
 
 #include "board.h"
 #include "generic.h"
@@ -819,6 +820,7 @@ static struct resource dbgu_resources[] = {
 static struct atmel_uart_data dbgu_data = {
 	.use_dma_tx	= 0,
 	.use_dma_rx	= 0,		/* DBGU not capable of receive DMA */
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 dbgu_dmamask = DMA_BIT_MASK(32);
@@ -857,6 +859,7 @@ static struct resource uart0_resources[] = {
 static struct atmel_uart_data uart0_data = {
 	.use_dma_tx	= 1,
 	.use_dma_rx	= 1,
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 uart0_dmamask = DMA_BIT_MASK(32);
@@ -908,6 +911,7 @@ static struct resource uart1_resources[] = {
 static struct atmel_uart_data uart1_data = {
 	.use_dma_tx	= 1,
 	.use_dma_rx	= 1,
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 uart1_dmamask = DMA_BIT_MASK(32);
@@ -951,6 +955,7 @@ static struct resource uart2_resources[] = {
 static struct atmel_uart_data uart2_data = {
 	.use_dma_tx	= 1,
 	.use_dma_rx	= 1,
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 uart2_dmamask = DMA_BIT_MASK(32);
@@ -994,6 +999,7 @@ static struct resource uart3_resources[] = {
 static struct atmel_uart_data uart3_data = {
 	.use_dma_tx	= 1,
 	.use_dma_rx	= 1,
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 uart3_dmamask = DMA_BIT_MASK(32);
@@ -1037,6 +1043,7 @@ static struct resource uart4_resources[] = {
 static struct atmel_uart_data uart4_data = {
 	.use_dma_tx	= 1,
 	.use_dma_rx	= 1,
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 uart4_dmamask = DMA_BIT_MASK(32);
@@ -1075,6 +1082,7 @@ static struct resource uart5_resources[] = {
 static struct atmel_uart_data uart5_data = {
 	.use_dma_tx	= 1,
 	.use_dma_rx	= 1,
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 uart5_dmamask = DMA_BIT_MASK(32);

arch/arm/mach-at91/at91sam9261.c

@@ -20,6 +20,7 @@
 #include <asm/system_misc.h>
 #include <mach/cpu.h>
 #include <mach/at91sam9261.h>
+#include <mach/hardware.h>
 
 #include "at91_aic.h"
 #include "at91_rstc.h"

arch/arm/mach-at91/at91sam9261_devices.c

@@ -25,6 +25,7 @@
 #include <mach/at91sam9261_matrix.h>
 #include <mach/at91_matrix.h>
 #include <mach/at91sam9_smc.h>
+#include <mach/hardware.h>
 
 #include "board.h"
 #include "generic.h"
@@ -880,6 +881,7 @@ static struct resource dbgu_resources[] = {
 static struct atmel_uart_data dbgu_data = {
 	.use_dma_tx	= 0,
 	.use_dma_rx	= 0,		/* DBGU not capable of receive DMA */
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 dbgu_dmamask = DMA_BIT_MASK(32);
@@ -918,6 +920,7 @@ static struct resource uart0_resources[] = {
 static struct atmel_uart_data uart0_data = {
 	.use_dma_tx	= 1,
 	.use_dma_rx	= 1,
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 uart0_dmamask = DMA_BIT_MASK(32);
@@ -961,6 +964,7 @@ static struct resource uart1_resources[] = {
 static struct atmel_uart_data uart1_data = {
 	.use_dma_tx	= 1,
 	.use_dma_rx	= 1,
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 uart1_dmamask = DMA_BIT_MASK(32);
@@ -1004,6 +1008,7 @@ static struct resource uart2_resources[] = {
 static struct atmel_uart_data uart2_data = {
 	.use_dma_tx	= 1,
 	.use_dma_rx	= 1,
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 uart2_dmamask = DMA_BIT_MASK(32);

arch/arm/mach-at91/at91sam9263.c

@@ -19,6 +19,7 @@
 #include <asm/mach/map.h>
 #include <asm/system_misc.h>
 #include <mach/at91sam9263.h>
+#include <mach/hardware.h>
 
 #include "at91_aic.h"
 #include "at91_rstc.h"

arch/arm/mach-at91/at91sam9263_devices.c

@@ -24,6 +24,7 @@
 #include <mach/at91sam9263_matrix.h>
 #include <mach/at91_matrix.h>
 #include <mach/at91sam9_smc.h>
+#include <mach/hardware.h>
 
 #include "board.h"
 #include "generic.h"
@@ -1324,6 +1325,7 @@ static struct resource dbgu_resources[] = {
 static struct atmel_uart_data dbgu_data = {
 	.use_dma_tx	= 0,
 	.use_dma_rx	= 0,		/* DBGU not capable of receive DMA */
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 dbgu_dmamask = DMA_BIT_MASK(32);
@@ -1362,6 +1364,7 @@ static struct resource uart0_resources[] = {
 static struct atmel_uart_data uart0_data = {
 	.use_dma_tx	= 1,
 	.use_dma_rx	= 1,
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 uart0_dmamask = DMA_BIT_MASK(32);
@@ -1405,6 +1408,7 @@ static struct resource uart1_resources[] = {
 static struct atmel_uart_data uart1_data = {
 	.use_dma_tx	= 1,
 	.use_dma_rx	= 1,
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 uart1_dmamask = DMA_BIT_MASK(32);
@@ -1448,6 +1452,7 @@ static struct resource uart2_resources[] = {
 static struct atmel_uart_data uart2_data = {
 	.use_dma_tx	= 1,
 	.use_dma_rx	= 1,
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 uart2_dmamask = DMA_BIT_MASK(32);

arch/arm/mach-at91/at91sam926x_time.c

@@ -19,6 +19,7 @@
 #include <linux/of_irq.h>
 
 #include <asm/mach/time.h>
+#include <mach/hardware.h>
 
 #define AT91_PIT_MR		0x00			/* Mode Register */
 #define		AT91_PIT_PITIEN		(1 << 25)		/* Timer Interrupt Enable */

arch/arm/mach-at91/at91sam9g45.c

@@ -20,6 +20,7 @@
 #include <asm/system_misc.h>
 #include <mach/at91sam9g45.h>
 #include <mach/cpu.h>
+#include <mach/hardware.h>
 
 #include "at91_aic.h"
 #include "soc.h"

arch/arm/mach-at91/at91sam9g45_devices.c

@@ -32,6 +32,7 @@
 #include <mach/at91sam9_smc.h>
 #include <linux/platform_data/dma-atmel.h>
 #include <mach/atmel-mci.h>
+#include <mach/hardware.h>
 
 #include <media/atmel-isi.h>
 
@@ -1587,6 +1588,7 @@ static struct resource dbgu_resources[] = {
 static struct atmel_uart_data dbgu_data = {
 	.use_dma_tx	= 0,
 	.use_dma_rx	= 0,
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 dbgu_dmamask = DMA_BIT_MASK(32);
@@ -1625,6 +1627,7 @@ static struct resource uart0_resources[] = {
 static struct atmel_uart_data uart0_data = {
 	.use_dma_tx	= 1,
 	.use_dma_rx	= 1,
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 uart0_dmamask = DMA_BIT_MASK(32);
@@ -1668,6 +1671,7 @@ static struct resource uart1_resources[] = {
 static struct atmel_uart_data uart1_data = {
 	.use_dma_tx	= 1,
 	.use_dma_rx	= 1,
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 uart1_dmamask = DMA_BIT_MASK(32);
@@ -1711,6 +1715,7 @@ static struct resource uart2_resources[] = {
 static struct atmel_uart_data uart2_data = {
 	.use_dma_tx	= 1,
 	.use_dma_rx	= 1,
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 uart2_dmamask = DMA_BIT_MASK(32);
@@ -1754,6 +1759,7 @@ static struct resource uart3_resources[] = {
 static struct atmel_uart_data uart3_data = {
 	.use_dma_tx	= 1,
 	.use_dma_rx	= 1,
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 uart3_dmamask = DMA_BIT_MASK(32);

arch/arm/mach-at91/at91sam9rl.c

@@ -20,6 +20,7 @@
 #include <mach/cpu.h>
 #include <mach/at91_dbgu.h>
 #include <mach/at91sam9rl.h>
+#include <mach/hardware.h>
 
 #include "at91_aic.h"
 #include "at91_rstc.h"

arch/arm/mach-at91/at91sam9rl_devices.c

@@ -21,6 +21,7 @@
 #include <mach/at91sam9rl_matrix.h>
 #include <mach/at91_matrix.h>
 #include <mach/at91sam9_smc.h>
+#include <mach/hardware.h>
 #include <linux/platform_data/dma-atmel.h>
 
 #include "board.h"
@@ -956,6 +957,7 @@ static struct resource dbgu_resources[] = {
 static struct atmel_uart_data dbgu_data = {
 	.use_dma_tx	= 0,
 	.use_dma_rx	= 0,		/* DBGU not capable of receive DMA */
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 dbgu_dmamask = DMA_BIT_MASK(32);
@@ -994,6 +996,7 @@ static struct resource uart0_resources[] = {
 static struct atmel_uart_data uart0_data = {
 	.use_dma_tx	= 1,
 	.use_dma_rx	= 1,
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 uart0_dmamask = DMA_BIT_MASK(32);
@@ -1045,6 +1048,7 @@ static struct resource uart1_resources[] = {
 static struct atmel_uart_data uart1_data = {
 	.use_dma_tx	= 1,
 	.use_dma_rx	= 1,
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 uart1_dmamask = DMA_BIT_MASK(32);
@@ -1088,6 +1092,7 @@ static struct resource uart2_resources[] = {
 static struct atmel_uart_data uart2_data = {
 	.use_dma_tx	= 1,
 	.use_dma_rx	= 1,
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 uart2_dmamask = DMA_BIT_MASK(32);
@@ -1131,6 +1136,7 @@ static struct resource uart3_resources[] = {
 static struct atmel_uart_data uart3_data = {
 	.use_dma_tx	= 1,
 	.use_dma_rx	= 1,
+	.rts_gpio	= -EINVAL,
 };
 
 static u64 uart3_dmamask = DMA_BIT_MASK(32);

arch/arm/mach-at91/at91x40.c

@@ -19,7 +19,7 @@
 #include <asm/mach/arch.h>
 #include <mach/at91x40.h>
 #include <mach/at91_st.h>
-#include <mach/timex.h>
+#include <mach/hardware.h>
 
 #include "at91_aic.h"
 #include "generic.h"

arch/arm/mach-at91/at91x40_time.c

@@ -25,6 +25,7 @@
 #include <linux/time.h>
 #include <linux/io.h>
 #include <mach/hardware.h>
+#include <mach/at91x40.h>
 #include <asm/mach/time.h>
 
 #include "at91_tc.h"

arch/arm/mach-at91/board-gsia18s.c

@@ -31,6 +31,7 @@
 #include <asm/mach/arch.h>
 
 #include <mach/at91sam9_smc.h>
+#include <mach/hardware.h>
 
 #include "at91_aic.h"
 #include "board.h"

arch/arm/mach-at91/board-pcontrol-g20.c

@@ -30,6 +30,7 @@
 #include <asm/mach/arch.h>
 
 #include <mach/at91sam9_smc.h>
+#include <mach/hardware.h>
 
 #include "at91_aic.h"
 #include "board.h"

arch/arm/mach-at91/board-stamp9g20.c

@@ -26,6 +26,7 @@
 #include <asm/mach/arch.h>
 
 #include <mach/at91sam9_smc.h>
+#include <mach/hardware.h>
 
 #include "at91_aic.h"
 #include "board.h"

arch/arm/mach-at91/include/mach/at91x40.h

@@ -55,4 +55,6 @@
 #define	AT91_PS_CR	(AT91_PS + 0)	/* PS Control register */
 #define	AT91_PS_CR_CPU	(1 << 0)	/* CPU clock disable bit */
 
+#define AT91X40_MASTER_CLOCK	40000000
+
 #endif /* AT91X40_H */

arch/arm/mach-at91/include/mach/timex.h

-/*
- * arch/arm/mach-at91/include/mach/timex.h
- *
- *  Copyright (C) 2003 SAN People
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#ifndef __ASM_ARCH_TIMEX_H
-#define __ASM_ARCH_TIMEX_H
-
-#include <mach/hardware.h>
-
-#ifdef CONFIG_ARCH_AT91X40
-
-#define AT91X40_MASTER_CLOCK	40000000
-#define CLOCK_TICK_RATE		(AT91X40_MASTER_CLOCK)
-
-#else
-
-#define CLOCK_TICK_RATE		12345678
-
-#endif
-
-#endif /* __ASM_ARCH_TIMEX_H */

arch/arm/mach-at91/pm.c

@@ -27,6 +27,7 @@
 #include <asm/mach/irq.h>
 
 #include <mach/cpu.h>
+#include <mach/hardware.h>
 
 #include "at91_aic.h"
 #include "generic.h"

arch/arm/mach-clps711x/include/mach/timex.h

-/* Bogus value */
-#define CLOCK_TICK_RATE 512000

arch/arm/mach-davinci/include/mach/timex.h

-/*
- * DaVinci timer defines
- *
- * Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com>
- *
- * 2007 (c) MontaVista Software, Inc. This file is licensed under
- * the terms of the GNU General Public License version 2. This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
- */
-#ifndef __ASM_ARCH_TIMEX_H
-#define __ASM_ARCH_TIMEX_H
-
-/*
- * Alert: Not all timers of the DaVinci family run at a frequency of 27MHz,
- * but we should be fine as long as CLOCK_TICK_RATE or LATCH (see include/
- * linux/jiffies.h) are not used directly in code. Currently none of the
- * code relevant to DaVinci platform depends on these values directly.
- */
-#define CLOCK_TICK_RATE 27000000
-
-#endif /* __ASM_ARCH_TIMEX_H__ */

arch/arm/mach-dove/include/mach/timex.h

-/*
- * arch/arm/mach-dove/include/mach/timex.h
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2.  This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#define CLOCK_TICK_RATE		(100 * HZ)

arch/arm/mach-ebsa110/include/mach/timex.h

-/*
- *  arch/arm/mach-ebsa110/include/mach/timex.h
- *
- *  Copyright (C) 1997, 1998 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- *  EBSA110 architecture timex specifications
- */
-
-/*
- * On the EBSA, the clock ticks at weird rates.
- * This is therefore not used to calculate the
- * divisor.
- */
-#define CLOCK_TICK_RATE		47894000
-

arch/arm/mach-ep93xx/core.c

@@ -117,7 +117,7 @@ void __init ep93xx_map_io(void)
 #define EP93XX_TIMER4_CLOCK		983040
 
 #define TIMER1_RELOAD			((EP93XX_TIMER123_CLOCK / HZ) - 1)
-#define TIMER4_TICKS_PER_JIFFY		DIV_ROUND_CLOSEST(CLOCK_TICK_RATE, HZ)
+#define TIMER4_TICKS_PER_JIFFY		DIV_ROUND_CLOSEST(EP93XX_TIMER4_CLOCK, HZ)
 
 static unsigned int last_jiffy_time;
 

arch/arm/mach-ep93xx/include/mach/timex.h

-/*
- * arch/arm/mach-ep93xx/include/mach/timex.h
- */
-
-#define CLOCK_TICK_RATE		983040

arch/arm/mach-exynos/include/mach/timex.h

-/* linux/arch/arm/mach-exynos4/include/mach/timex.h
- *
- * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
- *		http://www.samsung.com
- *
- * Copyright (c) 2003-2010 Simtec Electronics
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * Based on arch/arm/mach-s5p6442/include/mach/timex.h
- *
- * EXYNOS4 - time parameters
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
-
-#ifndef __ASM_ARCH_TIMEX_H
-#define __ASM_ARCH_TIMEX_H __FILE__
-
-/* CLOCK_TICK_RATE needs to be evaluatable by the cpp, so making it
- * a variable is useless. It seems as long as we make our timers an
- * exact multiple of HZ, any value that makes a 1->1 correspondence
- * for the time conversion functions to/from jiffies is acceptable.
-*/
-
-#define CLOCK_TICK_RATE 12000000
-
-#endif /* __ASM_ARCH_TIMEX_H */

arch/arm/mach-footbridge/include/mach/timex.h

-/*
- *  arch/arm/mach-footbridge/include/mach/timex.h
- *
- *  Copyright (C) 1998 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- *  EBSA285 architecture timex specifications
- */
-
-/*
- * We assume a constant here; this satisfies the maths in linux/timex.h
- * and linux/time.h.  CLOCK_TICK_RATE is actually system dependent, but
- * this must be a constant.
- */
-#define CLOCK_TICK_RATE		(50000000/16)

arch/arm/mach-gemini/include/mach/timex.h

-/*
- * Gemini timex specifications
- *
- * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
- *
- * 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.
- */
-
-/* When AHB bus frequency is 150MHz */
-#define CLOCK_TICK_RATE	38000000

arch/arm/mach-integrator/include/mach/timex.h

-/*
- *  arch/arm/mach-integrator/include/mach/timex.h
- *
- *  Integrator architecture timex specifications
- *
- *  Copyright (C) 1999 ARM Limited
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-/*
- * ??
- */
-#define CLOCK_TICK_RATE		(50000000 / 16)

arch/arm/mach-iop13xx/include/mach/timex.h

-#define CLOCK_TICK_RATE (100 * HZ)

arch/arm/mach-iop32x/include/mach/timex.h

-/*
- * arch/arm/mach-iop32x/include/mach/timex.h
- *
- * IOP32x architecture timex specifications
- */
-#define CLOCK_TICK_RATE		(100 * HZ)

arch/arm/mach-iop33x/include/mach/timex.h

-/*
- * arch/arm/mach-iop33x/include/mach/timex.h
- *
- * IOP3xx architecture timex specifications
- */
-#define CLOCK_TICK_RATE		(100 * HZ)

arch/arm/mach-ixp4xx/common.c

@@ -23,7 +23,6 @@
 #include <linux/interrupt.h>
 #include <linux/bitops.h>
 #include <linux/time.h>
-#include <linux/timex.h>
 #include <linux/clocksource.h>
 #include <linux/clockchips.h>
 #include <linux/io.h>
@@ -45,6 +44,17 @@
 #include <asm/mach/irq.h>
 #include <asm/mach/time.h>
 
+#define IXP4XX_TIMER_FREQ 66666000
+
+/*
+ * The timer register doesn't allow to specify the two least significant bits of
+ * the timeout value and assumes them being zero. So make sure IXP4XX_LATCH is
+ * the best value with the two least significant bits unset.
+ */
+#define IXP4XX_LATCH DIV_ROUND_CLOSEST(IXP4XX_TIMER_FREQ, \
+				       (IXP4XX_OST_RELOAD_MASK + 1) * HZ) * \
+			(IXP4XX_OST_RELOAD_MASK + 1)
+
 static void __init ixp4xx_clocksource_init(void);
 static void __init ixp4xx_clockevent_init(void);
 static struct clock_event_device clockevent_ixp4xx;
@@ -520,7 +530,7 @@ static void ixp4xx_set_mode(enum clock_event_mode mode,
 
 	switch (mode) {
 	case CLOCK_EVT_MODE_PERIODIC:
-		osrt = LATCH & ~IXP4XX_OST_RELOAD_MASK;
+		osrt = IXP4XX_LATCH & ~IXP4XX_OST_RELOAD_MASK;
  		opts = IXP4XX_OST_ENABLE;
 		break;
 	case CLOCK_EVT_MODE_ONESHOT:

arch/arm/mach-ixp4xx/include/mach/timex.h

-/*
- * arch/arm/mach-ixp4xx/include/mach/timex.h
- * 
- */
-
-#include <mach/ixp4xx-regs.h>
-
-/*
- * We use IXP425 General purpose timer for our timer needs, it runs at 
- * 66.66... MHz. We do a convulted calculation of CLOCK_TICK_RATE b/c the
- * timer register ignores the bottom 2 bits of the LATCH value.
- */
-#define IXP4XX_TIMER_FREQ 66666000
-#define CLOCK_TICK_RATE \
-	(((IXP4XX_TIMER_FREQ / HZ & ~IXP4XX_OST_RELOAD_MASK) + 1) * HZ)
-

arch/arm/mach-kirkwood/include/mach/timex.h

-/*
- * arch/arm/mach-kirkwood/include/mach/timex.h
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2.  This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#define CLOCK_TICK_RATE		(100 * HZ)
-

arch/arm/mach-ks8695/include/mach/timex.h

-/*
- * arch/arm/mach-ks8695/include/mach/timex.h
- *
- * Copyright (C) 2006 Simtec Electronics
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * KS8695 - Time Parameters
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#ifndef __ASM_ARCH_TIMEX_H
-#define __ASM_ARCH_TIMEX_H
-
-#include <mach/hardware.h>
-
-#define CLOCK_TICK_RATE 	KS8695_CLOCK_RATE
-
-#endif

arch/arm/mach-lpc32xx/include/mach/timex.h

-/*
- * arch/arm/mach-lpc32xx/include/mach/timex.h
- *
- * Author: Kevin Wells <kevin.wells@nxp.com>
- *
- * Copyright (C) 2010 NXP Semiconductors
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-#ifndef __ASM_ARCH_TIMEX_H
-#define __ASM_ARCH_TIMEX_H
-
-/*
- * Rate in Hz of the main system oscillator. This value should match
- * the value 'MAIN_OSC_FREQ' in platform.h
- */
-#define CLOCK_TICK_RATE	13000000
-
-#endif

arch/arm/mach-mmp/include/mach/timex.h

-/*
- * linux/arch/arm/mach-mmp/include/mach/timex.h
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#ifdef CONFIG_CPU_MMP2
-#define CLOCK_TICK_RATE		6500000
-#else
-#define CLOCK_TICK_RATE		3250000
-#endif

arch/arm/mach-mmp/time.c

@@ -39,6 +39,12 @@
 
 #include "clock.h"
 
+#ifdef CONFIG_CPU_MMP2
+#define MMP_CLOCK_FREQ		6500000
+#else
+#define MMP_CLOCK_FREQ		3250000
+#endif
+
 #define TIMERS_VIRT_BASE	TIMERS1_VIRT_BASE
 
 #define MAX_DELTA		(0xfffffffe)
@@ -195,14 +201,14 @@ void __init timer_init(int irq)
 {
 	timer_config();
 
-	sched_clock_register(mmp_read_sched_clock, 32, CLOCK_TICK_RATE);
+	sched_clock_register(mmp_read_sched_clock, 32, MMP_CLOCK_FREQ);
 
 	ckevt.cpumask = cpumask_of(0);
 
 	setup_irq(irq, &timer_irq);
 
-	clocksource_register_hz(&cksrc, CLOCK_TICK_RATE);
-	clockevents_config_and_register(&ckevt, CLOCK_TICK_RATE,
+	clocksource_register_hz(&cksrc, MMP_CLOCK_FREQ);
+	clockevents_config_and_register(&ckevt, MMP_CLOCK_FREQ,
 					MIN_DELTA, MAX_DELTA);
 }
 

arch/arm/mach-msm/include/mach/timex.h

-/* arch/arm/mach-msm/include/mach/timex.h
- *
- * Copyright (C) 2007 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- */
-
-#ifndef __ASM_ARCH_MSM_TIMEX_H
-#define __ASM_ARCH_MSM_TIMEX_H
-
-#define CLOCK_TICK_RATE		1000000
-
-#endif

arch/arm/mach-mv78xx0/include/mach/timex.h

-/*
- * arch/arm/mach-mv78xx0/include/mach/timex.h
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2.  This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#define CLOCK_TICK_RATE		(100 * HZ)

arch/arm/mach-netx/include/mach/timex.h

-/*
- * arch/arm/mach-netx/include/mach/timex.h
- *
- * Copyright (C) 2005 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#define CLOCK_TICK_RATE 100000000

arch/arm/mach-netx/time.c

@@ -28,6 +28,9 @@
 #include <asm/mach/time.h>
 #include <mach/netx-regs.h>
 
+#define NETX_CLOCK_FREQ 100000000
+#define NETX_LATCH DIV_ROUND_CLOSEST(NETX_CLOCK_FREQ, HZ)
+
 #define TIMER_CLOCKEVENT 0
 #define TIMER_CLOCKSOURCE 1
 
@@ -41,7 +44,7 @@ static void netx_set_mode(enum clock_event_mode mode,
 
 	switch (mode) {
 	case CLOCK_EVT_MODE_PERIODIC:
-		writel(LATCH, NETX_GPIO_COUNTER_MAX(TIMER_CLOCKEVENT));
+		writel(NETX_LATCH, NETX_GPIO_COUNTER_MAX(TIMER_CLOCKEVENT));
 		tmode = NETX_GPIO_COUNTER_CTRL_RST_EN |
 			NETX_GPIO_COUNTER_CTRL_IRQ_EN |
 			NETX_GPIO_COUNTER_CTRL_RUN;
@@ -114,7 +117,7 @@ void __init netx_timer_init(void)
 	/* Reset the timer value to zero */
 	writel(0, NETX_GPIO_COUNTER_CURRENT(0));
 
-	writel(LATCH, NETX_GPIO_COUNTER_MAX(0));
+	writel(NETX_LATCH, NETX_GPIO_COUNTER_MAX(0));
 
 	/* acknowledge interrupt */
 	writel(COUNTER_BIT(0), NETX_GPIO_IRQ);
@@ -137,11 +140,11 @@ void __init netx_timer_init(void)
 			NETX_GPIO_COUNTER_CTRL(TIMER_CLOCKSOURCE));
 
 	clocksource_mmio_init(NETX_GPIO_COUNTER_CURRENT(TIMER_CLOCKSOURCE),
-		"netx_timer", CLOCK_TICK_RATE, 200, 32, clocksource_mmio_readl_up);
+		"netx_timer", NETX_CLOCK_FREQ, 200, 32, clocksource_mmio_readl_up);
 
 	/* with max_delta_ns >= delta2ns(0x800) the system currently runs fine.
 	 * Adding some safety ... */
 	netx_clockevent.cpumask = cpumask_of(0);
-	clockevents_config_and_register(&netx_clockevent, CLOCK_TICK_RATE,
+	clockevents_config_and_register(&netx_clockevent, NETX_CLOCK_FREQ,
 					0xa00, 0xfffffffe);
 }

arch/arm/mach-omap1/include/mach/timex.h

-/*
- * arch/arm/mach-omap1/include/mach/timex.h
- */
-
-#include <plat/timex.h>

arch/arm/mach-omap2/include/mach/timex.h

-/*
- * arch/arm/mach-omap2/include/mach/timex.h
- */
-
-#include <plat/timex.h>

arch/arm/mach-orion5x/include/mach/timex.h

-/*
- * arch/arm/mach-orion5x/include/mach/timex.h
- *
- * Tzachi Perelstein <tzachi@marvell.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2.  This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#define CLOCK_TICK_RATE		(100 * HZ)

arch/arm/mach-pxa/include/mach/timex.h

-/*
- * arch/arm/mach-pxa/include/mach/timex.h
- *
- * Author:	Nicolas Pitre
- * Created:	Jun 15, 2001
- * Copyright:	MontaVista Software Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-/* Various drivers are still using the constant of CLOCK_TICK_RATE, for
- * those drivers to at least work, the definition is provided here.
- *
- * NOTE: this is no longer accurate when multiple processors and boards
- * are selected, newer drivers should not depend on this any more.  Use
- * either the clocksource/clockevent or get this at run-time by calling
- * get_clock_tick_rate() (as defined in generic.c).
- */
-
-#if defined(CONFIG_PXA25x)
-/* PXA250/210 timer base */
-#define CLOCK_TICK_RATE 3686400
-#elif defined(CONFIG_PXA27x)
-/* PXA27x timer base */
-#ifdef CONFIG_MACH_MAINSTONE
-#define CLOCK_TICK_RATE 3249600
-#else
-#define CLOCK_TICK_RATE 3250000
-#endif
-#else
-#define CLOCK_TICK_RATE 3250000
-#endif

arch/arm/mach-realview/include/mach/timex.h

-/*
- *  arch/arm/mach-realview/include/mach/timex.h
- *
- *  RealView architecture timex specifications
- *
- *  Copyright (C) 2003 ARM Limited
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#define CLOCK_TICK_RATE		(50000000 / 16)

arch/arm/mach-rpc/include/mach/timex.h

-/*
- *  arch/arm/mach-rpc/include/mach/timex.h
- *
- *  Copyright (C) 1997, 1998 Russell King
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- *  RiscPC architecture timex specifications
- */
-
-/*
- * On the RiscPC, the clock ticks at 2MHz.
- */
-#define CLOCK_TICK_RATE		2000000
-

arch/arm/mach-rpc/time.c

@@ -24,6 +24,9 @@
 
 #include <asm/mach/time.h>
 
+#define RPC_CLOCK_FREQ 2000000
+#define RPC_LATCH DIV_ROUND_CLOSEST(RPC_CLOCK_FREQ, HZ)
+
 static u32 ioc_timer_gettimeoffset(void)
 {
 	unsigned int count1, count2, status;
@@ -46,23 +49,23 @@ static u32 ioc_timer_gettimeoffset(void)
 		 * and count2.
 		 */
 		if (status & (1 << 5))
-			offset -= LATCH;
+			offset -= RPC_LATCH;
 	} else if (count2 > count1) {
 		/*
 		 * We have just had another interrupt between reading
 		 * count1 and count2.
 		 */
-		offset -= LATCH;
+		offset -= RPC_LATCH;
 	}
 
-	offset = (LATCH - offset) * (tick_nsec / 1000);
-	return ((offset + LATCH/2) / LATCH) * 1000;
+	offset = (RPC_LATCH - offset) * (tick_nsec / 1000);
+	return DIV_ROUND_CLOSEST(offset, RPC_LATCH) * 1000;
 }
 
 void __init ioctime_init(void)
 {
-	ioc_writeb(LATCH & 255, IOC_T0LTCHL);
-	ioc_writeb(LATCH >> 8, IOC_T0LTCHH);
+	ioc_writeb(RPC_LATCH & 255, IOC_T0LTCHL);
+	ioc_writeb(RPC_LATCH >> 8, IOC_T0LTCHH);
 	ioc_writeb(0, IOC_T0GO);
 }
 

arch/arm/mach-s3c24xx/include/mach/timex.h

-/* arch/arm/mach-s3c2410/include/mach/timex.h
- *
- * Copyright (c) 2003-2005 Simtec Electronics
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * S3C2410 - time parameters
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
-
-#ifndef __ASM_ARCH_TIMEX_H
-#define __ASM_ARCH_TIMEX_H
-
-/* CLOCK_TICK_RATE needs to be evaluatable by the cpp, so making it
- * a variable is useless. It seems as long as we make our timers an
- * exact multiple of HZ, any value that makes a 1->1 correspondence
- * for the time conversion functions to/from jiffies is acceptable.
-*/
-
-#define CLOCK_TICK_RATE 12000000
-
-#endif /* __ASM_ARCH_TIMEX_H */

arch/arm/mach-s3c64xx/include/mach/timex.h

-/* arch/arm/mach-s3c64xx/include/mach/timex.h
- *
- * Copyright (c) 2003-2005 Simtec Electronics
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * S3C6400 - time parameters
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
-
-#ifndef __ASM_ARCH_TIMEX_H
-#define __ASM_ARCH_TIMEX_H
-
-/* CLOCK_TICK_RATE needs to be evaluatable by the cpp, so making it
- * a variable is useless. It seems as long as we make our timers an
- * exact multiple of HZ, any value that makes a 1->1 correspondence
- * for the time conversion functions to/from jiffies is acceptable.
-*/
-
-#define CLOCK_TICK_RATE 12000000
-
-#endif /* __ASM_ARCH_TIMEX_H */

arch/arm/mach-s5p64x0/include/mach/timex.h

-/* linux/arch/arm/mach-s5p64x0/include/mach/timex.h
- *
- * Copyright (c) 2010 Samsung Electronics Co., Ltd.
- *		http://www.samsung.com
- *
- * Copyright (c) 2003-2005 Simtec Electronics
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * S5P64X0 - time parameters
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
-
-#ifndef __ASM_ARCH_TIMEX_H
-#define __ASM_ARCH_TIMEX_H
-
-/* CLOCK_TICK_RATE needs to be evaluatable by the cpp, so making it
- * a variable is useless. It seems as long as we make our timers an
- * exact multiple of HZ, any value that makes a 1->1 correspondence
- * for the time conversion functions to/from jiffies is acceptable.
-*/
-
-#define CLOCK_TICK_RATE 12000000
-
-#endif /* __ASM_ARCH_TIMEX_H */

arch/arm/mach-s5pc100/include/mach/timex.h

-/* arch/arm/mach-s5pc100/include/mach/timex.h
- *
- * Copyright (c) 2003-2005 Simtec Electronics
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * S3C6400 - time parameters
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
-
-#ifndef __ASM_ARCH_TIMEX_H
-#define __ASM_ARCH_TIMEX_H
-
-/* CLOCK_TICK_RATE needs to be evaluatable by the cpp, so making it
- * a variable is useless. It seems as long as we make our timers an
- * exact multiple of HZ, any value that makes a 1->1 correspondence
- * for the time conversion functions to/from jiffies is acceptable.
-*/
-
-#define CLOCK_TICK_RATE 12000000
-
-#endif /* __ASM_ARCH_TIMEX_H */

arch/arm/mach-s5pv210/include/mach/timex.h

-/* linux/arch/arm/mach-s5pv210/include/mach/timex.h
- *
- * Copyright (c) 2003-2010 Simtec Electronics
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * Copyright (c) 2010 Samsung Electronics Co., Ltd.
- *		http://www.samsung.com/
- *
- * Based on arch/arm/mach-s5p6442/include/mach/timex.h
- *
- * S5PV210 - time parameters
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
-
-#ifndef __ASM_ARCH_TIMEX_H
-#define __ASM_ARCH_TIMEX_H __FILE__
-
-/* CLOCK_TICK_RATE needs to be evaluatable by the cpp, so making it
- * a variable is useless. It seems as long as we make our timers an
- * exact multiple of HZ, any value that makes a 1->1 correspondence
- * for the time conversion functions to/from jiffies is acceptable.
-*/
-
-#define CLOCK_TICK_RATE 12000000
-
-#endif /* __ASM_ARCH_TIMEX_H */

arch/arm/mach-sa1100/include/mach/timex.h

-/*
- * arch/arm/mach-sa1100/include/mach/timex.h
- *
- * SA1100 architecture timex specifications
- *
- * Copyright (C) 1998 
- */
-
-/*
- * SA1100 timer
- */
-#define CLOCK_TICK_RATE		3686400

arch/arm/mach-sa1100/time.c

@@ -9,6 +9,7 @@
  *
  */
 #include <linux/init.h>
+#include <linux/kernel.h>
 #include <linux/errno.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
@@ -20,6 +21,9 @@
 #include <mach/hardware.h>
 #include <mach/irqs.h>
 
+#define SA1100_CLOCK_FREQ 3686400
+#define SA1100_LATCH DIV_ROUND_CLOSEST(SA1100_CLOCK_FREQ, HZ)
+
 static u64 notrace sa1100_read_sched_clock(void)
 {
 	return readl_relaxed(OSCR);
@@ -93,7 +97,7 @@ static void sa1100_timer_resume(struct clock_event_device *cedev)
 	/*
 	 * OSMR0 is the system timer: make sure OSCR is sufficiently behind
 	 */
-	writel_relaxed(OSMR0 - LATCH, OSCR);
+	writel_relaxed(OSMR0 - SA1100_LATCH, OSCR);
 }
 #else
 #define sa1100_timer_suspend NULL
@@ -128,7 +132,7 @@ void __init sa1100_timer_init(void)
 
 	setup_irq(IRQ_OST0, &sa1100_timer_irq);
 
-	clocksource_mmio_init(OSCR, "oscr", CLOCK_TICK_RATE, 200, 32,
+	clocksource_mmio_init(OSCR, "oscr", SA1100_CLOCK_FREQ, 200, 32,
 		clocksource_mmio_readl_up);
 	clockevents_config_and_register(&ckevt_sa1100_osmr0, 3686400,
 					MIN_OSCR_DELTA * 2, 0x7fffffff);

arch/arm/mach-shmobile/include/mach/timex.h

-#ifndef __ASM_MACH_TIMEX_H
-#define __ASM_MACH_TIMEX_H
-
-#define CLOCK_TICK_RATE		1193180 /* unused i8253 PIT value */
-
-#endif /* __ASM_MACH_TIMEX_H */

arch/arm/mach-spear/include/mach/timex.h

-/*
- * arch/arm/plat-spear/include/plat/timex.h
- *
- * SPEAr platform specific timex definitions
- *
- * Copyright (C) 2009 ST Microelectronics
- * Viresh Kumar <viresh.linux@gmail.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#ifndef __PLAT_TIMEX_H
-#define __PLAT_TIMEX_H
-
-#define CLOCK_TICK_RATE			48000000
-
-#endif /* __PLAT_TIMEX_H */

arch/arm/mach-versatile/include/mach/timex.h

-/*
- *  arch/arm/mach-versatile/include/mach/timex.h
- *
- *  Versatile architecture timex specifications
- *
- *  Copyright (C) 2003 ARM Limited
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#define CLOCK_TICK_RATE		(50000000 / 16)

arch/arm/mach-w90x900/include/mach/timex.h

-/*
- * arch/arm/mach-w90x900/include/mach/timex.h
- *
- * Copyright (c) 2008 Nuvoton technology corporation
- * All rights reserved.
- *
- * Wan ZongShun <mcuos.com@gmail.com>
- *
- * Based on arch/arm/mach-s3c2410/include/mach/timex.h
- *
- * 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.
- *
- */
-
-#ifndef __ASM_ARCH_TIMEX_H
-#define __ASM_ARCH_TIMEX_H
-
-/* CLOCK_TICK_RATE Now, I don't use it. */
-
-#define CLOCK_TICK_RATE 15000000
-
-#endif /* __ASM_ARCH_TIMEX_H */

arch/arm/plat-omap/include/plat/timex.h

-/*
- * arch/arm/plat-omap/include/mach/timex.h
- *
- * Copyright (C) 2000 RidgeRun, Inc.
- * Author:  Greg Lonnon <glonnon@ridgerun.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.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
- * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * You should have received a copy of the  GNU General Public License along
- * with this program; if not, write  to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#if !defined(__ASM_ARCH_OMAP_TIMEX_H)
-#define __ASM_ARCH_OMAP_TIMEX_H
-
-#define CLOCK_TICK_RATE		(HZ * 100000UL)
-
-#endif /* __ASM_ARCH_OMAP_TIMEX_H */

drivers/clocksource/timer-marco.c

@@ -19,7 +19,8 @@
 #include <linux/of_irq.h>
 #include <linux/of_address.h>
 #include <linux/sched_clock.h>
-#include <asm/mach/time.h>
+
+#define MARCO_CLOCK_FREQ 1000000
 
 #define SIRFSOC_TIMER_32COUNTER_0_CTRL			0x0000
 #define SIRFSOC_TIMER_32COUNTER_1_CTRL			0x0004
@@ -191,7 +192,7 @@ static int sirfsoc_local_timer_setup(struct clock_event_device *ce)
 	ce->rating = 200;
 	ce->set_mode = sirfsoc_timer_set_mode;
 	ce->set_next_event = sirfsoc_timer_set_next_event;
-	clockevents_calc_mult_shift(ce, CLOCK_TICK_RATE, 60);
+	clockevents_calc_mult_shift(ce, MARCO_CLOCK_FREQ, 60);
 	ce->max_delta_ns = clockevent_delta2ns(-2, ce);
 	ce->min_delta_ns = clockevent_delta2ns(2, ce);
 	ce->cpumask = cpumask_of(cpu);
@@ -263,11 +264,11 @@ static void __init sirfsoc_marco_timer_init(void)
 	BUG_ON(IS_ERR(clk));
 	rate = clk_get_rate(clk);
 
-	BUG_ON(rate < CLOCK_TICK_RATE);
-	BUG_ON(rate % CLOCK_TICK_RATE);
+	BUG_ON(rate < MARCO_CLOCK_FREQ);
+	BUG_ON(rate % MARCO_CLOCK_FREQ);
 
 	/* Initialize the timer dividers */
-	timer_div = rate / CLOCK_TICK_RATE - 1;
+	timer_div = rate / MARCO_CLOCK_FREQ - 1;
 	writel_relaxed(timer_div << 16, sirfsoc_timer_base + SIRFSOC_TIMER_64COUNTER_CTRL);
 	writel_relaxed(timer_div << 16, sirfsoc_timer_base + SIRFSOC_TIMER_32COUNTER_0_CTRL);
 	writel_relaxed(timer_div << 16, sirfsoc_timer_base + SIRFSOC_TIMER_32COUNTER_1_CTRL);
@@ -283,7 +284,7 @@ static void __init sirfsoc_marco_timer_init(void)
 	/* Clear all interrupts */
 	writel_relaxed(0xFFFF, sirfsoc_timer_base + SIRFSOC_TIMER_INTR_STATUS);
 
-	BUG_ON(clocksource_register_hz(&sirfsoc_clocksource, CLOCK_TICK_RATE));
+	BUG_ON(clocksource_register_hz(&sirfsoc_clocksource, MARCO_CLOCK_FREQ));
 
 	sirfsoc_clockevent_init();
 }

drivers/clocksource/timer-prima2.c

@@ -21,6 +21,8 @@
 #include <linux/sched_clock.h>
 #include <asm/mach/time.h>
 
+#define PRIMA2_CLOCK_FREQ 1000000
+
 #define SIRFSOC_TIMER_COUNTER_LO	0x0000
 #define SIRFSOC_TIMER_COUNTER_HI	0x0004
 #define SIRFSOC_TIMER_MATCH_0		0x0008
@@ -173,7 +175,7 @@ static u64 notrace sirfsoc_read_sched_clock(void)
 static void __init sirfsoc_clockevent_init(void)
 {
 	sirfsoc_clockevent.cpumask = cpumask_of(0);
-	clockevents_config_and_register(&sirfsoc_clockevent, CLOCK_TICK_RATE,
+	clockevents_config_and_register(&sirfsoc_clockevent, PRIMA2_CLOCK_FREQ,
 					2, -2);
 }
 
@@ -190,8 +192,8 @@ static void __init sirfsoc_prima2_timer_init(struct device_node *np)
 
 	rate = clk_get_rate(clk);
 
-	BUG_ON(rate < CLOCK_TICK_RATE);
-	BUG_ON(rate % CLOCK_TICK_RATE);
+	BUG_ON(rate < PRIMA2_CLOCK_FREQ);
+	BUG_ON(rate % PRIMA2_CLOCK_FREQ);
 
 	sirfsoc_timer_base = of_iomap(np, 0);
 	if (!sirfsoc_timer_base)
@@ -199,14 +201,16 @@ static void __init sirfsoc_prima2_timer_init(struct device_node *np)
 
 	sirfsoc_timer_irq.irq = irq_of_parse_and_map(np, 0);
 
-	writel_relaxed(rate / CLOCK_TICK_RATE / 2 - 1, sirfsoc_timer_base + SIRFSOC_TIMER_DIV);
+	writel_relaxed(rate / PRIMA2_CLOCK_FREQ / 2 - 1,
+		       sirfsoc_timer_base + SIRFSOC_TIMER_DIV);
 	writel_relaxed(0, sirfsoc_timer_base + SIRFSOC_TIMER_COUNTER_LO);
 	writel_relaxed(0, sirfsoc_timer_base + SIRFSOC_TIMER_COUNTER_HI);
 	writel_relaxed(BIT(0), sirfsoc_timer_base + SIRFSOC_TIMER_STATUS);
 
-	BUG_ON(clocksource_register_hz(&sirfsoc_clocksource, CLOCK_TICK_RATE));
+	BUG_ON(clocksource_register_hz(&sirfsoc_clocksource,
+				       PRIMA2_CLOCK_FREQ));
 
-	sched_clock_register(sirfsoc_read_sched_clock, 64, CLOCK_TICK_RATE);
+	sched_clock_register(sirfsoc_read_sched_clock, 64, PRIMA2_CLOCK_FREQ);
 
 	BUG_ON(setup_irq(sirfsoc_timer_irq.irq, &sirfsoc_timer_irq));
 

drivers/input/misc/ixp4xx-beeper.c

@@ -67,7 +67,7 @@ static int ixp4xx_spkr_event(struct input_dev *dev, unsigned int type, unsigned
 	}
 
 	if (value > 20 && value < 32767)
-		count = (IXP4XX_TIMER_FREQ / (value * 4)) - 1;
+		count = (ixp4xx_timer_freq / (value * 4)) - 1;
 
 	ixp4xx_spkr_control(pin, count);
 

drivers/rtc/rtc-at91sam9.c

@@ -24,7 +24,7 @@
 
 #include <mach/at91_rtt.h>
 #include <mach/cpu.h>
-
+#include <mach/hardware.h>
 
 /*
  * This driver uses two configurable hardware resources that live in the

drivers/rtc/rtc-pxa.c

@@ -32,7 +32,6 @@
 
 #include <mach/hardware.h>
 
-#define TIMER_FREQ		CLOCK_TICK_RATE
 #define RTC_DEF_DIVIDER		(32768 - 1)
 #define RTC_DEF_TRIM		0
 #define MAXFREQ_PERIODIC	1000

drivers/tty/serial/atmel_serial.c

@@ -35,21 +35,18 @@
 #include <linux/platform_device.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
+#include <linux/of_gpio.h>
 #include <linux/dma-mapping.h>
 #include <linux/atmel_pdc.h>
 #include <linux/atmel_serial.h>
 #include <linux/uaccess.h>
 #include <linux/platform_data/atmel.h>
 #include <linux/timer.h>
+#include <linux/gpio.h>
 
 #include <asm/io.h>
 #include <asm/ioctls.h>
 
-#ifdef CONFIG_ARM
-#include <mach/cpu.h>
-#include <asm/gpio.h>
-#endif
-
 #define PDC_BUFFER_SIZE		512
 /* Revisit: We should calculate this based on the actual port settings */
 #define PDC_RX_TIMEOUT		(3 * 10)		/* 3 bytes */
@@ -168,6 +165,7 @@ struct atmel_uart_port {
 	struct circ_buf		rx_ring;
 
 	struct serial_rs485	rs485;		/* rs485 settings */
+	int			rts_gpio;	/* optional RTS GPIO */
 	unsigned int		tx_done_mask;
 	bool			is_usart;	/* usart or uart */
 	struct timer_list	uart_timer;	/* uart timer */
@@ -301,20 +299,16 @@ static void atmel_set_mctrl(struct uart_port *port, u_int mctrl)
 	unsigned int mode;
 	struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
 
-#ifdef CONFIG_ARCH_AT91RM9200
-	if (cpu_is_at91rm9200()) {
-		/*
-		 * AT91RM9200 Errata #39: RTS0 is not internally connected
-		 * to PA21. We need to drive the pin manually.
-		 */
-		if (port->mapbase == AT91RM9200_BASE_US0) {
-			if (mctrl & TIOCM_RTS)
-				at91_set_gpio_value(AT91_PIN_PA21, 0);
-			else
-				at91_set_gpio_value(AT91_PIN_PA21, 1);
-		}
+	/*
+	 * AT91RM9200 Errata #39: RTS0 is not internally connected
+	 * to PA21. We need to drive the pin as a GPIO.
+	 */
+	if (gpio_is_valid(atmel_port->rts_gpio)) {
+		if (mctrl & TIOCM_RTS)
+			gpio_set_value(atmel_port->rts_gpio, 0);
+		else
+			gpio_set_value(atmel_port->rts_gpio, 1);
 	}
-#endif
 
 	if (mctrl & TIOCM_RTS)
 		control |= ATMEL_US_RTSEN;
@@ -2389,6 +2383,25 @@ static int atmel_serial_probe(struct platform_device *pdev)
 	port = &atmel_ports[ret];
 	port->backup_imr = 0;
 	port->uart.line = ret;
+	port->rts_gpio = -EINVAL; /* Invalid, zero could be valid */
+	if (pdata)
+		port->rts_gpio = pdata->rts_gpio;
+	else if (np)
+		port->rts_gpio = of_get_named_gpio(np, "rts-gpios", 0);
+
+	if (gpio_is_valid(port->rts_gpio)) {
+		ret = devm_gpio_request(&pdev->dev, port->rts_gpio, "RTS");
+		if (ret) {
+			dev_err(&pdev->dev, "error requesting RTS GPIO\n");
+			goto err;
+		}
+		/* Default to 1 as RTS is active low */
+		ret = gpio_direction_output(port->rts_gpio, 1);
+		if (ret) {
+			dev_err(&pdev->dev, "error setting up RTS GPIO\n");
+			goto err;
+		}
+	}
 
 	ret = atmel_init_port(port, pdev);
 	if (ret)

include/linux/platform_data/atmel.h

@@ -84,6 +84,7 @@ struct atmel_uart_data {
 	short			use_dma_rx;	/* use receive DMA? */
 	void __iomem		*regs;		/* virt. base address, if any */
 	struct serial_rs485	rs485;		/* rs485 settings */
+	int			rts_gpio;	/* optional RTS GPIO */
 };
 
  /* Touchscreen Controller */