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r: 326604
b: refs/heads/master
c: 9495d1e
h: refs/heads/master
v: v3
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Peter Ujfalusi authored and Tony Lindgren committed Sep 24, 2012
1 parent 3d6e5fe commit 5d7515d
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2 changes: 1 addition & 1 deletion [refs]
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@@ -1,2 +1,2 @@
---
refs/heads/master: 268aebe4d04bf2ac1e839eff2c83519768460189
refs/heads/master: 9495d1e23dfccb1b0a97a85c59b79a26eddda778
82 changes: 57 additions & 25 deletions trunk/Documentation/arm/Samsung-S3C24XX/GPIO.txt
Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
S3C24XX GPIO Control
S3C2410 GPIO Control
====================

Introduction
Expand All @@ -12,7 +12,7 @@ Introduction
of the s3c2410 GPIO system, please read the Samsung provided
data-sheet/users manual to find out the complete list.

See Documentation/arm/Samsung/GPIO.txt for the core implementation.
See Documentation/arm/Samsung/GPIO.txt for the core implemetation.


GPIOLIB
Expand Down Expand Up @@ -41,8 +41,8 @@ GPIOLIB
GPIOLIB conversion
------------------

If you need to convert your board or driver to use gpiolib from the phased
out s3c2410 API, then here are some notes on the process.
If you need to convert your board or driver to use gpiolib from the exiting
s3c2410 api, then here are some notes on the process.

1) If your board is exclusively using an GPIO, say to control peripheral
power, then it will require to claim the gpio with gpio_request() before
Expand All @@ -55,7 +55,7 @@ out s3c2410 API, then here are some notes on the process.
as they have the same arguments, and can either take the pin specific
values, or the more generic special-function-number arguments.

3) s3c2410_gpio_pullup() changes have the problem that whilst the
3) s3c2410_gpio_pullup() changs have the problem that whilst the
s3c2410_gpio_pullup(x, 1) can be easily translated to the
s3c_gpio_setpull(x, S3C_GPIO_PULL_NONE), the s3c2410_gpio_pullup(x, 0)
are not so easy.
Expand All @@ -74,7 +74,7 @@ out s3c2410 API, then here are some notes on the process.
when using gpio_get_value() on an output pin (s3c2410_gpio_getpin
would return the value the pin is supposed to be outputting).

6) s3c2410_gpio_getirq() should be directly replaceable with the
6) s3c2410_gpio_getirq() should be directly replacable with the
gpio_to_irq() call.

The s3c2410_gpio and gpio_ calls have always operated on the same gpio
Expand Down Expand Up @@ -105,7 +105,7 @@ PIN Numbers
-----------

Each pin has an unique number associated with it in regs-gpio.h,
e.g. S3C2410_GPA(0) or S3C2410_GPF(1). These defines are used to tell
eg S3C2410_GPA(0) or S3C2410_GPF(1). These defines are used to tell
the GPIO functions which pin is to be used.

With the conversion to gpiolib, there is no longer a direct conversion
Expand All @@ -120,27 +120,31 @@ Configuring a pin
The following function allows the configuration of a given pin to
be changed.

void s3c_gpio_cfgpin(unsigned int pin, unsigned int function);
void s3c2410_gpio_cfgpin(unsigned int pin, unsigned int function);

e.g.:
Eg:

s3c_gpio_cfgpin(S3C2410_GPA(0), S3C_GPIO_SFN(1));
s3c_gpio_cfgpin(S3C2410_GPE(8), S3C_GPIO_SFN(2));
s3c2410_gpio_cfgpin(S3C2410_GPA(0), S3C2410_GPA0_ADDR0);
s3c2410_gpio_cfgpin(S3C2410_GPE(8), S3C2410_GPE8_SDDAT1);

which would turn GPA(0) into the lowest Address line A0, and set
GPE(8) to be connected to the SDIO/MMC controller's SDDAT1 line.

The s3c_gpio_cfgpin() call is a functional replacement for this call.


Reading the current configuration
---------------------------------

The current configuration of a pin can be read by using standard
gpiolib function:
The current configuration of a pin can be read by using:

s3c_gpio_getcfg(unsigned int pin);
s3c2410_gpio_getcfg(unsigned int pin);

The return value will be from the same set of values which can be
passed to s3c_gpio_cfgpin().
passed to s3c2410_gpio_cfgpin().

The s3c_gpio_getcfg() call should be a functional replacement for
this call.


Configuring a pull-up resistor
Expand All @@ -150,33 +154,61 @@ Configuring a pull-up resistor
pull-up resistors enabled. This can be configured by the following
function:

void s3c_gpio_setpull(unsigned int pin, unsigned int to);
void s3c2410_gpio_pullup(unsigned int pin, unsigned int to);

Where the to value is zero to set the pull-up off, and 1 to enable
the specified pull-up. Any other values are currently undefined.

The s3c_gpio_setpull() offers similar functionality, but with the
ability to encode whether the pull is up or down. Currently there
is no 'just on' state, so up or down must be selected.


Getting the state of a PIN
--------------------------

The state of a pin can be read by using the function:

unsigned int s3c2410_gpio_getpin(unsigned int pin);

Where the to value is S3C_GPIO_PULL_NONE to set the pull-up off,
and S3C_GPIO_PULL_UP to enable the specified pull-up. Any other
values are currently undefined.
This will return either zero or non-zero. Do not count on this
function returning 1 if the pin is set.

This call is now implemented by the relevant gpiolib calls, convert
your board or driver to use gpiolib.


Setting the state of a PIN
--------------------------

The value an pin is outputing can be modified by using the following:

Getting and setting the state of a PIN
--------------------------------------
void s3c2410_gpio_setpin(unsigned int pin, unsigned int to);

These calls are now implemented by the relevant gpiolib calls, convert
Which sets the given pin to the value. Use 0 to write 0, and 1 to
set the output to 1.

This call is now implemented by the relevant gpiolib calls, convert
your board or driver to use gpiolib.


Getting the IRQ number associated with a PIN
--------------------------------------------

A standard gpiolib function can map the given pin number to an IRQ
The following function can map the given pin number to an IRQ
number to pass to the IRQ system.

int gpio_to_irq(unsigned int pin);
int s3c2410_gpio_getirq(unsigned int pin);

Note, not all pins have an IRQ.

This call is now implemented by the relevant gpiolib calls, convert
your board or driver to use gpiolib.


Author
Authour
-------


Ben Dooks, 03 October 2004
Copyright 2004 Ben Dooks, Simtec Electronics
8 changes: 5 additions & 3 deletions trunk/Documentation/arm/Samsung/GPIO.txt
Original file line number Diff line number Diff line change
Expand Up @@ -5,14 +5,14 @@ Introduction
------------

This outlines the Samsung GPIO implementation and the architecture
specific calls provided alongside the drivers/gpio core.
specific calls provided alongisde the drivers/gpio core.


S3C24XX (Legacy)
----------------

See Documentation/arm/Samsung-S3C24XX/GPIO.txt for more information
about these devices. Their implementation has been brought into line
about these devices. Their implementation is being brought into line
with the core samsung implementation described in this document.


Expand All @@ -29,7 +29,7 @@ GPIO numbering is synchronised between the Samsung and gpiolib system.
PIN configuration
-----------------

Pin configuration is specific to the Samsung architecture, with each SoC
Pin configuration is specific to the Samsung architecutre, with each SoC
registering the necessary information for the core gpio configuration
implementation to configure pins as necessary.

Expand All @@ -38,3 +38,5 @@ driver or machine to change gpio configuration.

See arch/arm/plat-samsung/include/plat/gpio-cfg.h for more information
on these functions.


1 change: 0 additions & 1 deletion trunk/Documentation/i2c/busses/i2c-i801
Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,6 @@ Supported adapters:
* Intel DH89xxCC (PCH)
* Intel Panther Point (PCH)
* Intel Lynx Point (PCH)
* Intel Lynx Point-LP (PCH)
Datasheets: Publicly available at the Intel website

On Intel Patsburg and later chipsets, both the normal host SMBus controller
Expand Down
2 changes: 1 addition & 1 deletion trunk/MAINTAINERS
Original file line number Diff line number Diff line change
Expand Up @@ -3387,7 +3387,7 @@ M: "Wolfram Sang (embedded platforms)" <w.sang@pengutronix.de>
L: linux-i2c@vger.kernel.org
W: http://i2c.wiki.kernel.org/
T: quilt kernel.org/pub/linux/kernel/people/jdelvare/linux-2.6/jdelvare-i2c/
T: git git://git.pengutronix.de/git/wsa/linux.git
T: git git://git.fluff.org/bjdooks/linux.git
S: Maintained
F: Documentation/i2c/
F: drivers/i2c/
Expand Down
2 changes: 1 addition & 1 deletion trunk/Makefile
Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
VERSION = 3
PATCHLEVEL = 6
SUBLEVEL = 0
EXTRAVERSION = -rc6
EXTRAVERSION = -rc5
NAME = Saber-toothed Squirrel

# *DOCUMENTATION*
Expand Down
6 changes: 3 additions & 3 deletions trunk/arch/arm/Kconfig.debug
Original file line number Diff line number Diff line change
Expand Up @@ -356,15 +356,15 @@ choice
is nothing connected to read from the DCC.

config DEBUG_SEMIHOSTING
bool "Kernel low-level debug output via semihosting I/O"
bool "Kernel low-level debug output via semihosting I"
help
Semihosting enables code running on an ARM target to use
the I/O facilities on a host debugger/emulator through a
simple SVC call. The host debugger or emulator must have
simple SVC calls. The host debugger or emulator must have
semihosting enabled for the special svc call to be trapped
otherwise the kernel will crash.

This is known to work with OpenOCD, as well as
This is known to work with OpenOCD, as wellas
ARM's Fast Models, or any other controlling environment
that implements semihosting.

Expand Down
4 changes: 2 additions & 2 deletions trunk/arch/arm/Makefile
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Expand Up @@ -283,10 +283,10 @@ zImage Image xipImage bootpImage uImage: vmlinux
zinstall uinstall install: vmlinux
$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@

%.dtb: scripts
%.dtb:
$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@

dtbs: scripts
dtbs:
$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@

# We use MRPROPER_FILES and CLEAN_FILES now
Expand Down
4 changes: 0 additions & 4 deletions trunk/arch/arm/boot/compressed/head.S
Original file line number Diff line number Diff line change
Expand Up @@ -659,14 +659,10 @@ __armv7_mmu_cache_on:
#ifdef CONFIG_CPU_ENDIAN_BE8
orr r0, r0, #1 << 25 @ big-endian page tables
#endif
mrcne p15, 0, r6, c2, c0, 2 @ read ttb control reg
orrne r0, r0, #1 @ MMU enabled
movne r1, #0xfffffffd @ domain 0 = client
bic r6, r6, #1 << 31 @ 32-bit translation system
bic r6, r6, #3 << 0 @ use only ttbr0
mcrne p15, 0, r3, c2, c0, 0 @ load page table pointer
mcrne p15, 0, r1, c3, c0, 0 @ load domain access control
mcrne p15, 0, r6, c2, c0, 2 @ load ttb control
#endif
mcr p15, 0, r0, c7, c5, 4 @ ISB
mcr p15, 0, r0, c1, c0, 0 @ load control register
Expand Down
2 changes: 1 addition & 1 deletion trunk/arch/arm/boot/dts/tegra20-harmony.dts
Original file line number Diff line number Diff line change
Expand Up @@ -397,7 +397,7 @@
regulator@11 {
reg = <11>;
regulator-compatible = "ldo7";
regulator-name = "vdd_ldo7,avdd_hdmi";
regulator-name = "vdd_ldo7,avdd_hdmi,vdd_fuse";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
};
Expand Down
2 changes: 0 additions & 2 deletions trunk/arch/arm/configs/tegra_defconfig
Original file line number Diff line number Diff line change
Expand Up @@ -145,8 +145,6 @@ CONFIG_MMC_SDHCI_TEGRA=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_DRV_EM3027=y
CONFIG_RTC_DRV_TEGRA=y
CONFIG_DMADEVICES=y
CONFIG_TEGRA20_APB_DMA=y
CONFIG_STAGING=y
CONFIG_SENSORS_ISL29018=y
CONFIG_SENSORS_ISL29028=y
Expand Down
8 changes: 0 additions & 8 deletions trunk/arch/arm/include/asm/assembler.h
Original file line number Diff line number Diff line change
Expand Up @@ -320,12 +320,4 @@
.size \name , . - \name
.endm

.macro check_uaccess, addr:req, size:req, limit:req, tmp:req, bad:req
#ifndef CONFIG_CPU_USE_DOMAINS
adds \tmp, \addr, #\size - 1
sbcccs \tmp, \tmp, \limit
bcs \bad
#endif
.endm

#endif /* __ASM_ASSEMBLER_H__ */
3 changes: 0 additions & 3 deletions trunk/arch/arm/include/asm/memory.h
Original file line number Diff line number Diff line change
Expand Up @@ -187,7 +187,6 @@ static inline unsigned long __phys_to_virt(unsigned long x)
#define __phys_to_virt(x) ((x) - PHYS_OFFSET + PAGE_OFFSET)
#endif
#endif
#endif /* __ASSEMBLY__ */

#ifndef PHYS_OFFSET
#ifdef PLAT_PHYS_OFFSET
Expand All @@ -197,8 +196,6 @@ static inline unsigned long __phys_to_virt(unsigned long x)
#endif
#endif

#ifndef __ASSEMBLY__

/*
* PFNs are used to describe any physical page; this means
* PFN 0 == physical address 0.
Expand Down
4 changes: 0 additions & 4 deletions trunk/arch/arm/include/asm/tlb.h
Original file line number Diff line number Diff line change
Expand Up @@ -199,17 +199,13 @@ static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte,
{
pgtable_page_dtor(pte);

#ifdef CONFIG_ARM_LPAE
tlb_add_flush(tlb, addr);
#else
/*
* With the classic ARM MMU, a pte page has two corresponding pmd
* entries, each covering 1MB.
*/
addr &= PMD_MASK;
tlb_add_flush(tlb, addr + SZ_1M - PAGE_SIZE);
tlb_add_flush(tlb, addr + SZ_1M);
#endif

tlb_remove_page(tlb, pte);
}
Expand Down
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