Commit 7940a34b authored by Kevin Hilman's avatar Kevin Hilman
Browse files

Merge branch 'davinci-next' into davinci-for-linus 

Conflicts:
	arch/arm/mach-davinci/board-da830-evm.c
	arch/arm/mach-davinci/board-da850-evm.c
parents 6451d778 8939b350

MAINTAINERS

+2 −2
Original line number Diff line number Diff line
@@ -5303,8 +5303,8 @@ F: drivers/*/*s3c2410* 
F:	drivers/*/*/*s3c2410*



TI DAVINCI MACHINE SUPPORT

P:	Kevin Hilman

M:	davinci-linux-open-source@linux.davincidsp.com

M:	Kevin Hilman <khilman@deeprootsystems.com>

L:	davinci-linux-open-source@linux.davincidsp.com (subscribers-only)

Q:	http://patchwork.kernel.org/project/linux-davinci/list/

S:	Supported

F:	arch/arm/mach-davinci

arch/arm/configs/da8xx_omapl_defconfig

+3 −0
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@@ -17,6 +17,8 @@ CONFIG_MODVERSIONS=y 
CONFIG_ARCH_DAVINCI=y

CONFIG_ARCH_DAVINCI_DA830=y

CONFIG_ARCH_DAVINCI_DA850=y

CONFIG_MACH_MITYOMAPL138=y

CONFIG_MACH_OMAPL138_HAWKBOARD=y

CONFIG_DAVINCI_RESET_CLOCKS=y

CONFIG_NO_HZ=y

CONFIG_HIGH_RES_TIMERS=y
@@ -79,6 +81,7 @@ CONFIG_I2C_DAVINCI=y 
# CONFIG_HWMON is not set

CONFIG_WATCHDOG=y

CONFIG_REGULATOR=y

CONFIG_REGULATOR_DUMMY=y

CONFIG_REGULATOR_TPS6507X=y

CONFIG_FB=y

CONFIG_FB_DA8XX=y

arch/arm/mach-davinci/Kconfig

+46 −30
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@@ -30,13 +30,13 @@ config ARCH_DAVINCI_DM646x 
	select ARCH_DAVINCI_DMx



config ARCH_DAVINCI_DA830

        bool "DA830/OMAP-L137 based system"

	bool "DA830/OMAP-L137/AM17x based system"

	select CP_INTC

	select ARCH_DAVINCI_DA8XX

	select CPU_DCACHE_WRITETHROUGH # needed on silicon revs 1.0, 1.1



config ARCH_DAVINCI_DA850

	bool "DA850/OMAP-L138 based system"

	bool "DA850/OMAP-L138/AM18x based system"

	select CP_INTC

	select ARCH_DAVINCI_DA8XX

	select ARCH_HAS_CPUFREQ
@@ -115,21 +115,21 @@ config MACH_DAVINCI_DM365_EVM 
	  for development is a DM365 EVM



config MACH_DAVINCI_DA830_EVM

	bool "TI DA830/OMAP-L137 Reference Platform"

	bool "TI DA830/OMAP-L137/AM17x Reference Platform"

	default ARCH_DAVINCI_DA830

	depends on ARCH_DAVINCI_DA830

	select GPIO_PCF857X

	help

	  Say Y here to select the TI DA830/OMAP-L137 Evaluation Module.

	  Say Y here to select the TI DA830/OMAP-L137/AM17x Evaluation Module.



choice

	prompt "Select DA830/OMAP-L137 UI board peripheral"

	prompt "Select DA830/OMAP-L137/AM17x UI board peripheral"

	depends on MACH_DAVINCI_DA830_EVM

	help

	  The presence of UI card on the DA830/OMAP-L137 EVM is detected

	  automatically based on successful probe of the I2C based GPIO

	  expander on that board. This option selected in this menu has

	  an effect only in case of a successful UI card detection.

	  The presence of UI card on the DA830/OMAP-L137/AM17x EVM is

	  detected automatically based on successful probe of the I2C

	  based GPIO expander on that board. This option selected in this

	  menu has an effect only in case of a successful UI card detection.



config DA830_UI_LCD

	bool "LCD"
@@ -145,18 +145,18 @@ config DA830_UI_NAND 
endchoice



config MACH_DAVINCI_DA850_EVM

	bool "TI DA850/OMAP-L138 Reference Platform"

	bool "TI DA850/OMAP-L138/AM18x Reference Platform"

	default ARCH_DAVINCI_DA850

	depends on ARCH_DAVINCI_DA850

	select GPIO_PCA953X

	help

	  Say Y here to select the TI DA850/OMAP-L138 Evaluation Module.

	  Say Y here to select the TI DA850/OMAP-L138/AM18x Evaluation Module.



choice

	prompt "Select peripherals connected to expander on UI board"

	depends on MACH_DAVINCI_DA850_EVM

	help

	  The presence of User Interface (UI) card on the DA850/OMAP-L138

	  The presence of User Interface (UI) card on the DA850/OMAP-L138/AM18x

	  EVM is detected automatically based on successful probe of the I2C

	  based GPIO expander on that card. This option selected in this

	  menu has an effect only in case of a successful UI card detection.
@@ -165,13 +165,13 @@ config DA850_UI_NONE 
	bool "No peripheral is enabled"

	help

	  Say Y if you do not want to enable any of the peripherals connected

	  to TCA6416 expander on DA850/OMAP-L138 EVM UI card

	  to TCA6416 expander on DA850/OMAP-L138/AM18x EVM UI card



config DA850_UI_RMII

	bool "RMII Ethernet PHY"

	help

	  Say Y if you want to use the RMII PHY on the DA850/OMAP-L138 EVM.

	  This PHY is found on the UI daughter card that is supplied with

	  Say Y if you want to use the RMII PHY on the DA850/OMAP-L138/AM18x

	  EVM. This PHY is found on the UI daughter card that is supplied with

	  the EVM.

	  NOTE: Please take care while choosing this option, MII PHY will

	  not be functional if RMII mode is selected.
@@ -185,6 +185,22 @@ config MACH_TNETV107X 
	help

	  Say Y here to select the TI TNETV107X Evaluation Module.



config MACH_MITYOMAPL138

	bool "Critical Link MityDSP-L138/MityARM-1808 SoM"

	depends on ARCH_DAVINCI_DA850

	help

	  Say Y here to select the Critical Link MityDSP-L138/MityARM-1808

	  System on Module.  Information on this SoM may be found at

	  http://www.mitydsp.com



config MACH_OMAPL138_HAWKBOARD

	bool "TI AM1808 / OMAPL-138 Hawkboard platform"

	depends on ARCH_DAVINCI_DA850

	help

	  Say Y here to select the TI AM1808 / OMAPL-138 Hawkboard platform .

	  Information of this board may be found at

	  http://www.hawkboard.org/



config DAVINCI_MUX

	bool "DAVINCI multiplexing support"

	depends on ARCH_DAVINCI

arch/arm/mach-davinci/Makefile

+3 −1
Original line number Diff line number Diff line
@@ -5,7 +5,7 @@ 


# Common objects

obj-y 			:= time.o clock.o serial.o io.o psc.o \

			   gpio.o dma.o usb.o common.o sram.o

			   gpio.o dma.o usb.o common.o sram.o aemif.o



obj-$(CONFIG_DAVINCI_MUX)		+= mux.o
@@ -33,6 +33,8 @@ obj-$(CONFIG_MACH_DAVINCI_DM365_EVM) += board-dm365-evm.o 
obj-$(CONFIG_MACH_DAVINCI_DA830_EVM)	+= board-da830-evm.o

obj-$(CONFIG_MACH_DAVINCI_DA850_EVM)	+= board-da850-evm.o

obj-$(CONFIG_MACH_TNETV107X)		+= board-tnetv107x-evm.o

obj-$(CONFIG_MACH_MITYOMAPL138)		+= board-mityomapl138.o

obj-$(CONFIG_MACH_OMAPL138_HAWKBOARD)	+= board-omapl138-hawk.o



# Power Management

obj-$(CONFIG_CPU_FREQ)			+= cpufreq.o

arch/arm/mach-davinci/aemif.c

0 → 100644
+133 −0
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/*

 * AEMIF support for DaVinci SoCs

 *

 * Copyright (C) 2010 Texas Instruments Incorporated. http://www.ti.com/

 *

 * 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.

 */



#include <linux/kernel.h>

#include <linux/io.h>

#include <linux/err.h>

#include <linux/clk.h>

#include <linux/module.h>

#include <linux/time.h>



#include <mach/aemif.h>



/* Timing value configuration */



#define TA(x)		((x) << 2)

#define RHOLD(x)	((x) << 4)

#define RSTROBE(x)	((x) << 7)

#define RSETUP(x)	((x) << 13)

#define WHOLD(x)	((x) << 17)

#define WSTROBE(x)	((x) << 20)

#define WSETUP(x)	((x) << 26)



#define TA_MAX		0x3

#define RHOLD_MAX	0x7

#define RSTROBE_MAX	0x3f

#define RSETUP_MAX	0xf

#define WHOLD_MAX	0x7

#define WSTROBE_MAX	0x3f

#define WSETUP_MAX	0xf



#define TIMING_MASK	(TA(TA_MAX) | \

				RHOLD(RHOLD_MAX) | \

				RSTROBE(RSTROBE_MAX) |	\

				RSETUP(RSETUP_MAX) | \

				WHOLD(WHOLD_MAX) | \

				WSTROBE(WSTROBE_MAX) | \

				WSETUP(WSETUP_MAX))



/*

 * aemif_calc_rate - calculate timing data.

 * @wanted: The cycle time needed in nanoseconds.

 * @clk: The input clock rate in kHz.

 * @max: The maximum divider value that can be programmed.

 *

 * On success, returns the calculated timing value minus 1 for easy

 * programming into AEMIF timing registers, else negative errno.

 */

static int aemif_calc_rate(int wanted, unsigned long clk, int max)

{

	int result;



	result = DIV_ROUND_UP((wanted * clk), NSEC_PER_MSEC) - 1;



	pr_debug("%s: result %d from %ld, %d\n", __func__, result, clk, wanted);



	/* It is generally OK to have a more relaxed timing than requested... */

	if (result < 0)

		result = 0;



	/* ... But configuring tighter timings is not an option. */

	else if (result > max)

		result = -EINVAL;



	return result;

}



/**

 * davinci_aemif_setup_timing - setup timing values for a given AEMIF interface

 * @t: timing values to be progammed

 * @base: The virtual base address of the AEMIF interface

 * @cs: chip-select to program the timing values for

 *

 * This function programs the given timing values (in real clock) into the

 * AEMIF registers taking the AEMIF clock into account.

 *

 * This function does not use any locking while programming the AEMIF

 * because it is expected that there is only one user of a given

 * chip-select.

 *

 * Returns 0 on success, else negative errno.

 */

int davinci_aemif_setup_timing(struct davinci_aemif_timing *t,

					void __iomem *base, unsigned cs)

{

	unsigned set, val;

	unsigned ta, rhold, rstrobe, rsetup, whold, wstrobe, wsetup;

	unsigned offset = A1CR_OFFSET + cs * 4;

	struct clk *aemif_clk;

	unsigned long clkrate;



	if (!t)

		return 0;	/* Nothing to do */



	aemif_clk = clk_get(NULL, "aemif");

	if (IS_ERR(aemif_clk))

		return PTR_ERR(aemif_clk);



	clkrate = clk_get_rate(aemif_clk);



	clkrate /= 1000;	/* turn clock into kHz for ease of use */



	ta	= aemif_calc_rate(t->ta, clkrate, TA_MAX);

	rhold	= aemif_calc_rate(t->rhold, clkrate, RHOLD_MAX);

	rstrobe	= aemif_calc_rate(t->rstrobe, clkrate, RSTROBE_MAX);

	rsetup	= aemif_calc_rate(t->rsetup, clkrate, RSETUP_MAX);

	whold	= aemif_calc_rate(t->whold, clkrate, WHOLD_MAX);

	wstrobe	= aemif_calc_rate(t->wstrobe, clkrate, WSTROBE_MAX);

	wsetup	= aemif_calc_rate(t->wsetup, clkrate, WSETUP_MAX);



	if (ta < 0 || rhold < 0 || rstrobe < 0 || rsetup < 0 ||

			whold < 0 || wstrobe < 0 || wsetup < 0) {

		pr_err("%s: cannot get suitable timings\n", __func__);

		return -EINVAL;

	}



	set = TA(ta) | RHOLD(rhold) | RSTROBE(rstrobe) | RSETUP(rsetup) |

		WHOLD(whold) | WSTROBE(wstrobe) | WSETUP(wsetup);



	val = __raw_readl(base + offset);

	val &= ~TIMING_MASK;

	val |= set;

	__raw_writel(val, base + offset);



	return 0;

}

EXPORT_SYMBOL(davinci_aemif_setup_timing);