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* omap: serial: Fix the boot-up crash/reboot without CONFIG_PMSantosh Shilimkar2010-10-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The omap2plus_defconfig doesn't boot up when built with CONFIG_PM disabled on the latest linux-omap master. Below are the observations 1. OMAP3 reboots in the middle of boot -------------------------------------------------- [ 0.000000] Calibrating delay loop... 494.72 BogoMIPS (lpj=1933312) [ 0.000000] pid_max: default: 32768 minimum: 301 [ 0.000000] Security Framework initialized [ 0.000000] Mount-cache hash table entries: 512 [ 0.000000] CPU: Testing write buffer coherency: ok [ 0.000000] Brought up 1 CPUs [ 0.000000] SMP: Total of 1 processors activated (494.72 BogoMIPS). [ 0.000000] regulator: core version 0.5 [ 0.000000] NET: Registered protocol family 16 U-Boot 1.1.4 (Feb 11 2009 - 16:10:23) OMAP3430-GP rev 2, CPU-OPP2 L3-165MHz TI 3430SDP 1.0 Version + mDDR (Boot NOR) DRAM: 128 MB Flash: 128 MB NAND:128 MiB -------------------------------------------------- 2. OMAP4 does a kernel PANIC ------------------------------------- [ 0.000000] Calibrating delay loop... 1195.29 BogoMIPS (lpj=4669440) [ 0.000000] pid_max: default: 32768 minimum: 301 [ 0.000000] Security Framework initialized [ 0.000000] Mount-cache hash table entries: 512 [ 0.000000] CPU: Testing write buffer coherency: ok [ 0.000000] L310 cache controller enabled [ 0.000000] l2x0: 16 ways, CACHE_ID 0x410000c2, AUX_CTRL 0x0e050000 [ 0.000000] CPU1: Booted secondary processor [ 0.000000] Brought up 2 CPUs [ 0.000000] SMP: Total of 2 processors activated (2395.78 BogoMIPS). [ 0.000000] regulator: core version 0.5 [ 0.000000] NET: Registered protocol family 16 [ 0.000000] mux: Could not set signal i2c2_scl.i2c2_scl [ 0.000000] mux: Could not set signal i2c2_sda.i2c2_sda [ 0.000000] mux: Could not set signal i2c3_scl.i2c3_scl [ 0.000000] mux: Could not set signal i2c3_sda.i2c3_sda [ 0.000000] mux: Could not set signal i2c4_scl.i2c4_scl [ 0.000000] mux: Could not set signal i2c4_sda.i2c4_sda ------------------------------------- This is happening because 'omap_serial_init()' is hanging in the boot. On OMAP3 the watchdog is generating reboot because devices_init doesn't happens where as on OMAP4 it just hangs without reboot. The uart clock is not getting enabled after omap_device_idle as part of omap_serial_init. The omap_device_idle(will disable the clock) then omap_uart_block_sleep() should enable clock back disabled during the boot up phase. But omap_uart_block_sleep() stuffed version is binded only under CONFIG_PM and other version is just empty. Hence it is not enabling clock back as expected This patch adds uart clock enable code to omap_uart_block_sleep() function built with CONFIG_PM disabled. Thanks to Charulatha and Govindraj for their help on this debug. Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Charulatha V <charu@ti.com> Signed-off-by: Govindraj.R <govindraj.raja@ti.com> Acked-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* OMAP: control: move plat-omap/control.h to mach-omap2/control.hPaul Walmsley2010-10-08
| | | | | | | | | | | | | | | | | Only OMAP2+ platforms have the System Control Module (SCM) IP block. In the past, we've kept the SCM header file in plat-omap. This has led to abuse - device drivers including it; includes being added that create implicit dependencies on OMAP2+ builds; etc. In response, move the SCM headers into mach-omap2/. As part of this, remove the direct SCM access from the OMAP UDC driver. It was clearly broken. The UDC code needs an indepth review for use on OMAP2+ chips. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Cory Maccarrone <darkstar6262@gmail.com> Cc: Kyungmin Park <kyungmin.park@samsung.com>
* OMAP3: serial: Fix uart4 handling for 3630Govindraj.R2010-09-29
| | | | | | | | | | This patch makes the following: - Adds missing wakeup padding register handling. - Fixes a hardcode to use PER module ONLY on UART3. Signed-off-by: Sergio Aguirre <saaguirre@ti.com> Signed-off-by: Govindraj.R <govindraj.raja@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP: UART: use non-locking versions of hwmod enable/idle functionsKevin Hilman2010-09-29
| | | | | | | | | Since the UART enable/idle is done during the idle path (with interrupts disabled), use the non-locking versions of the hwmod enable/idle functions. Signed-off-by: Govindraj.R <govindraj.raja@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP: UART: don't do automatic bus-level suspend/resumeKevin Hilman2010-09-29
| | | | | | | | | | | Since the omap_device for UART is currently managed inside the idle path itself, don't let the bus-level code suspend/resume the UART. To prevent this, pm_runtime_get() is used when preparing for suspend and pm_runtime_put() is used when finished with suspend. Signed-off-by: Govindraj.R <govindraj.raja@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP2: UART: remove set_uart_globalsGovindraj.R2010-09-29
| | | | | | | | Remove set_uart_globals function as this will not be needed as physical address for uarts will be taken from hwmod data file. Signed-off-by: Govindraj.R <govindraj.raja@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* OMAP: UART: omap_device conversions, remove implicit 8520 assumptionsKevin Hilman2010-09-29
| | | | | | | | | | | | | | | | | | | Major rework of OMAP UART init for omap_device conversion as well as use with either 8250 driver or new omap-serial driver. In preparation for a new omap-serial driver, remove 8250 assumptions and dependencies from the serial core. Convert UART core and PM support to use omap_device layer. Also add support for both console on 8250 or omap-serial driver. omap_device conversion: - Convert clock API calls to omap_device calls - Remove all static platform_data setup and configuration. This is all done by the omap_device build phase. Signed-off-by: Govindraj.R <govindraj.raja@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* omap2/3/4: serial: errata i202: fix for MDR1 accessDeepak K2010-08-02
| | | | | | | | | | | | | | | | | | | | | | | | | Errata i202 (OMAP3430 - 1.12, OMAP3630 - 1.6): UART module MDR1 register access can cause a dummy underrun condition which could result in a freeze in the case of IrDA communication or if used as UART, corrupted data. Workaround is as follows for everytime MDR1 register is changed: * setup all required UART registers * setup MDR1.MODE_SELECT bit field * Wait 5 L4 clk cycles + 5 UART functional clock cycles * Clear the Tx and RX fifo using FCR register Note: The following step is not done as I am assuming it is not needed due to reconfiguration being done and there is no halted operation perse. * Read if required, the RESUME register to resume halted operation Based on an earlier patch at: http://git.omapzoom.org/?p=kernel/omap.git;a=commitdiff;h=42d4a342c009bd9727c100abc8a4bc3063c22f0c Signed-off-by: Deepak K <deepak.k@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* omap2/3/4: serial: introduce errata handlingNishanth Menon2010-08-02
| | | | | | | | | | introduce silicon specific quirks as a errata handling mechanism as a start UART_ERRATA_FIFO_FULL_ABORT is used to handle the override for fifo full condition for rx and tx. Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* omap2/3/4: serial: kill dev_attr_sleep_timeout sparse warnNishanth Menon2010-08-02
| | | | | | | | | Remove the following sparse warnings by declaring attr as static: arch/arm/mach-omap2/serial.c:627:1: warning: symbol 'dev_attr_sleep_timeout' was not declared. Should it be static? Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* omap2/3/4: serial: remove initialization sparse warningsNishanth Menon2010-08-02
| | | | | | | | | | Initialization of pointer should be done with NULL. Removes sparse warnings: arch/arm/mach-omap2/serial.c:566:17: warning: Using plain integer as NULL pointer arch/arm/mach-omap2/serial.c:567:17: warning: Using plain integer as NULL pointer Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* omap3: serial: Add context save and restore for mcrGovindraj R2010-08-02
| | | | | | | | | Adds context save/restore for mcr register as state of mcr register is lost after core off. Signed-off-by: Govindraj R <govindraj.raja@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* omap2/3/4: serial: Remove condition for getting uart4_physSergio Aguirre2010-03-15
| | | | | | | This check is invalid, since we haven't filled the omap_revision var at this point. Signed-off-by: Sergio Aguirre <saaguirre@ti.com>
* OMAP3: serial: Use dev_* macros instead of printkSergio Aguirre2010-03-15
| | | | | | | | As we have a struct device populated at the time we are printing the errors, using dev_* macros makes more sense, as could give a better idea where the error/warning came from. Signed-off-by: Sergio Aguirre <saaguirre@ti.com>
* OMAP3: serial: Check for zero-based physical addrSergio Aguirre2010-03-15
| | | | | | | | | | | | This is for protecting a wrong mapping attempt of a zero-based physical address. The result is that, no serial port will be attempted to be mapped. Also add an additional protection for NULL clocks before attempting to enable them (if above condition applies) Signed-off-by: Sergio Aguirre <saaguirre@ti.com>
* OMAP2: serial.c: Fix number of uarts in early_initThomas Weber2010-03-11
| | | | | | | | | | | | | | | The omap_serial_early_init prints the following errors: Could not get uart4_ick Could not get uart4_fck because all the uarts available in omap_uart[] will be initialized. Only omap4430 and omap3630 have 4 uarts at the moment. This patch reduces the number of uarts when cpu is not omap4430 or omap3630. Signed-off-by: Thomas Weber <weber@corscience.de> Signed-off-by: Tony Lindgren <tony@atomide.com>
* omap3/4: uart: fix full-fifo write abortSantosh Shilimkar2010-02-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch is addition to the already merged commit on non-empty uart fifo read abort. "ce13d4716a276f4331d78ba28a5093a63822ab95" OMAP3630 and OMAP4430 UART IP blocks have a restriction on TX FIFO too. If you try to write to the tx fifo when it is full, the system aborts. More details on this thread are here: http://www.mail-archive.com/linux-omap@vger.kernel.org/msg19447.html This can be easily reproducible by not suppressing interconnect errors or long duration testing where continuous prints over console from multiple threads. This patch is addressing the issue by ensuring that write is not issued while fifo is full. A timeout is added to avoid any hang on fifo-full for 10 mS which is unlikely case. Patch is validated on OMAP3630 and OMAP4 SDP. V2 version removed the additional 1 uS on every TX as per Tony's suggestion Signed-off-by: Woodruff Richard <r-woodruff2@ti.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> CC: Ghorai Sukumar <s-ghorai@ti.com> Reviewed-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* omap2/3/4: serial: fix coding style indentaionvikram pandita2010-02-15
| | | | | | | | | | | | No logical code change Fix coding style indentaion as per checkpatch.pl Fix multi-line comment style reported by Nishanth Menon Signed-off-by: Vikram Pandita <vikram.pandita@ti.com> Cc: Nishanth Menon <nm@ti.com> Acked-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* omap2/3/4: Fix mach-omap2/serial.c for multibootTony Lindgren2010-02-15
| | | | | | | Initialize UART4 only for 3630 and 44xx. Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* Merge branch 'debug-ll' into omap-for-linusTony Lindgren2010-02-15
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| * omap: Clean the serial port definesTony Lindgren2010-02-15
| | | | | | | | | | | | | | | | | | This way we don't have conflicts with the defines with compiling in multiple omaps. Set the addresses for uarts in struct omap_globals for the early serial init code. Signed-off-by: Tony Lindgren <tony@atomide.com>
* | omap: Disable serial port autoidle by defaultTony Lindgren2010-02-03
|/ | | | | | | | | | | | | | | | | | | Currently the omap serial clocks are autoidled after 5 seconds. However, this causes lost characters on the serial ports. As this is considered non-standard behaviour for Linux, disable the timeout. Note that this will also cause blocking of any deeper omap sleep states. To enable the autoidling of the serial ports, do something like this for each serial port: # echo 5 > /sys/devices/platform/serial8250.0/sleep_timeout # echo 5 > /sys/devices/platform/serial8250.1/sleep_timeout ... Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* omap2/3: make serial_in_override() address the right uart portAlexander Shishkin2010-01-08
| | | | | | | | | | | | Commit f62349ee9788b1d94c55eb6c291d74a1f69bdd9e makes it possible to have some other than first uart port as ttyS0, which breaks the workaround serial_in_override() function which will try to address the first uart port (for ttyS0) and not the one that was initialized. Signed-off-by: Alexander Shishkin <virtuoso@slind.org> CC: Mika Westerberg <ext-mika.1.westerberg@nokia.com> Acked-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* OMAP3: serial - fix bug introduced inMika Westerberg2009-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit f62349ee9788b1d94c55eb6c291d74a1f69bdd9e had side effect that causes kernel to oops when we are suspending to ram: # echo mem > /sys/power/state WARNING: at kernel/irq/manage.c:858 __free_irq+0x90/0x174() Trying to free already-free IRQ 72 Modules linked in: Backtrace: [<c00328d0>] (dump_backtrace+0x0/0x110) from [<c0347298>] (dump_stack+0x18/0x1c) r7:dfd4be08 r6:c009505c r5:c03fbfd1 r4:0000035a [<c0347280>] (dump_stack+0x0/0x1c) from [<c005a408>] (warn_slowpath_common+0x50/0x68) [<c005a3b8>] (warn_slowpath_common+0x0/0x68) from [<c005a46c>] (warn_slowpath_fmt+0x30) r7:c0474afc r6:00000048 r5:00000000 r4:c0474ac0 [<c005a43c>] (warn_slowpath_fmt+0x0/0x38) from [<c009505c>] (__free_irq+0x90/0x174) r3:00000048 r2:c03fc0ef [<c0094fcc>] (__free_irq+0x0/0x174) from [<c0095184>] (free_irq+0x44/0x64) [<c0095140>] (free_irq+0x0/0x64) from [<c0038100>] (omap_uart_enable_irqs+0x4c/0x90) r7:c034d58c r6:00000003 r5:00000000 r4:c0463028 [<c00380b4>] (omap_uart_enable_irqs+0x0/0x90) from [<c003d8f8>] (omap3_pm_begin+0x1c/0) r5:00000003 r4:00000000 [<c003d8dc>] (omap3_pm_begin+0x0/0x28) from [<c008d008>] (suspend_devices_and_enter+0x) [<c008cfd8>] (suspend_devices_and_enter+0x0/0x1dc) from [<c008d29c>] (enter_state+0xe8) r5:c03f7f46 r4:00000000 [<c008d1b4>] (enter_state+0x0/0x140) from [<c008c8e0>] (state_store+0x9c/0xc4) r7:c034d58c r6:00000003 r5:00000003 r4:c03f7f46 [<c008c844>] (state_store+0x0/0xc4) from [<c01cb2dc>] (kobj_attr_store+0x20/0x24) [<c01cb2bc>] (kobj_attr_store+0x0/0x24) from [<c0119420>] (sysfs_write_file+0x114/0x14) [<c011930c>] (sysfs_write_file+0x0/0x148) from [<c00cb298>] (vfs_write+0xb8/0x164) [<c00cb1e0>] (vfs_write+0x0/0x164) from [<c00cb408>] (sys_write+0x44/0x70) r8:4001f000 r7:00000004 r6:df81bd00 r5:00000000 r4:00000000 [<c00cb3c4>] (sys_write+0x0/0x70) from [<c002f040>] (ret_fast_syscall+0x0/0x38) r8:c002f204 r7:00000004 r6:401fa5e8 r5:4001f000 r4:00000004 This is due the fact that uart_list list was populated in omap_serial_early_init() and omap_uart_enable_irqs() went through this list even when serial idle wasn't enabled for all uarts. This patch moves the code that populates the uart_list and enables uart clocks into omap_serial_init_port(). Signed-off-by: Mika Westerberg <ext-mika.1.westerberg@nokia.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* omap: serial: fix non-empty uart fifo read abortvikram pandita2009-12-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | OMAP3xxx and OMAP4430 UART IP blocks have a restriction wrt RX FIFO. Empty RX fifo read causes an abort. OMAP3xxx: UART IP revision >= 0x52 have this issue MVR register format is: Bits Field Name Description Type Reset 31:8 RESERVED RO 0x0 7:4 MAJOR Major revision number of the module. RO 0x-- 3:0 MINOR Minor revision number of the module. RO 0x-- OMAP4xxx: All revisions have this issue Revision id check is not used as the format of MVR resigster has changed For omap4 MVR register reads as: 0x50410602 => Revision id = 0x0602 Format of MVR register on omap4 is: (Courtesy: Cousson, Benoit) Bits Field Name Description Type Reset 31:30 SCHEME Scheme revision number of module RO 0x1 29:28 RESERVED RO 0x1 27:16 FUNC Function revision number of module RO 0x041 15:11 RTL Rtl revision number of module RO 0x00 10:8 MAJOR Major revision number of the module. RO 0x6 7:6 CUSTOM Custom revision number of the module. RO 0x0 5:0 MINOR Minor revision number of the module. RO 0x02 Override the default 8250 read handler: mem_serial_in() by a custom handler: serial_in_8250() which makes sure that RX fifo is not read when empty tested on zoom3(3630) board Cc: Benoit Cousson <b-cousson@ti.com> Signed-off-by: Vikram Pandita <vikram.pandita@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* OMAP3: serial - allow platforms specify which UARTs to initializeMika Westerberg2009-12-11
| | | | | | | | | | | This patch adds new function: omap_serial_init_port(port) that can be used to initialize only selected UARTs as serial ports. Platforms can then in their board files call this function instead of omap_serial_init() if they don't want to use all UARTs as serial ports. Signed-off-by: Mika Westerberg <ext-mika.1.westerberg@nokia.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* omap: Eliminate OMAP_MAX_NR_PORTSAlexander Shishkin2009-11-22
| | | | | | | | | | | | | | | | | | | | Eliminate OMAP_MAX_NR_PORTS Note that also the null terminator entry for omap1 serial_platform_data needs to be now removed to avoid oopsing. Note that mach-omap1 uses struct plat_serial8250_port array, which requires a null terminator at the end, and that's why we need to use ARRAY_SIZE - 1. This is not needed on mach-omap2 as the array used is struct omap_uart_state, and does not use a null terminator. Signed-off-by: Alexander Shishkin <virtuoso@slind.org> Acked-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Ladislav Michl <ladis@linux-mips.org> Signed-off-by: Tony Lindgren <tony@atomide.com>
* OMAP3: PM debug: allow runtime toggle of PM featuresKevin Hilman2009-11-11
| | | | | | | | | | | | | | | | | | | | | Allow enable/disable of low-power states during idle. To enable low-power idle: echo 1 > /debug/pm_debug/sleep_while_idle to disable: echo 0 > /debug/pm_debug/sleep_while_idle Also allow enable/disable of OFF-mode. To enable: echo 1 > /debug/pm_debug/enable_off_mode to disable: echo 0 > /debug/pm_debug/enable_off_mode Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* Merge branch '7xx-iosplit-plat' with omap-fixesTony Lindgren2009-11-10
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| * omap: headers: Move remaining headers from include/mach to include/platTony Lindgren2009-10-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move the remaining headers under plat-omap/include/mach to plat-omap/include/plat. Also search and replace the files using these headers to include using the right path. This was done with: #!/bin/bash mach_dir_old="arch/arm/plat-omap/include/mach" plat_dir_new="arch/arm/plat-omap/include/plat" headers=$(cd $mach_dir_old && ls *.h) omap_dirs="arch/arm/*omap*/ \ drivers/video/omap \ sound/soc/omap" other_files="drivers/leds/leds-ams-delta.c \ drivers/mfd/menelaus.c \ drivers/mfd/twl4030-core.c \ drivers/mtd/nand/ams-delta.c" for header in $headers; do old="#include <mach\/$header" new="#include <plat\/$header" for dir in $omap_dirs; do find $dir -type f -name \*.[chS] | \ xargs sed -i "s/$old/$new/" done find drivers/ -type f -name \*omap*.[chS] | \ xargs sed -i "s/$old/$new/" for file in $other_files; do sed -i "s/$old/$new/" $file done done for header in $(ls $mach_dir_old/*.h); do git mv $header $plat_dir_new/ done Signed-off-by: Tony Lindgren <tony@atomide.com>
| * omap: Change low-level serial init to use ioremapTony Lindgren2009-10-16
| | | | | | | | | | | | Change low-level serial init to use ioremap Signed-off-by: Tony Lindgren <tony@atomide.com>
* | omap4: Fix UART4 platform data on omap4Santosh Shilimkar2009-10-22
|/ | | | | | | | | | | This patch removes the unnecessary UART4 platform which is under data is wrong because of this There is a separate platform structure for UART4 Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Reviewed-By: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
* omap: Fix 44xx compileTony Lindgren2009-09-24
| | | | | | Looks like these patches were not tested that well.. Signed-off-by: Tony Lindgren <tony@atomide.com>
* omap: Fix compile for arch/arm/mach-omap2Tony Lindgren2009-09-24
| | | | | | | | | Patch 941132606c7611246d2034cb7b01f9270c2d1ede split IO_ADDRESS into OMAP1_IO_ADDRESS and OMAP2_IO_ADDRESS except for the omap4 code to avoid merge conflicts with the omap4 code that was queued earlier. Signed-off-by: Tony Lindgren <tony@atomide.com>
* Merge branch 'omap-for-linus' of ↵Linus Torvalds2009-09-18
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 * 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: (47 commits) OMAP clock: use debugfs_remove_recursive() for rewinding OMAP2/3/4 core: create omap_device layer OMAP: omap_hwmod: call omap_hwmod init at boot; create interconnects OMAP2/3/4: create omap_hwmod layer OMAP2/3 board-*.c files: read bootloader configuration earlier OMAP2/3/4 PRCM: add module IDLEST wait code OMAP2/3 PM: create the OMAP PM interface and add a default OMAP PM no-op layer OMAP3 clock: remove superfluous calls to omap2_init_clk_clkdm OMAP clock: associate MPU clocks with the mpu_clkdm OMAP3 clock: Fixed processing of bootarg 'mpurate' OMAP: SDRC: Add several new register definitions OMAP: powerdomain: Fix overflow when doing powerdomain deps lookups. OMAP: PM: Added suspend target state control to debugfs for OMAP3 OMAP: PM debug: Add PRCM register dump support OMAP: PM debug: make powerdomains use PM-debug counters OMAP: PM: Add pm-debug counters OMAP: PM: Add closures to clkdm_for_each and pwrdm_for_each. OMAP: PM: Hook into PM counters OMAP: PM counter infrastructure. OMAP3: PM: fix lockdep warning caused by omap3_pm_init ...
| * Merge branch '2_6_32_for_next' of git://git.pwsan.com/linux-2.6 into for-nextTony Lindgren2009-09-03
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| | * OMAP2/3 board-*.c files: read bootloader configuration earlierPaul Walmsley2009-09-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Most board-*.c files read configuration data from the bootloader in their .init_machine() function. This needs to happen earlier, at some point before omap2_init_common_hw() is called. This is because a future patch will use the bootloader serial console port information to enable the UART clocks earlier, immediately after omap2_clk_init(). This is in turn necessary since otherwise clock tree usecounts on clocks like dpll4_m2x2_ck will be bogus, which can cause the currently-active console UART clock to be disabled during boot. Signed-off-by: Paul Walmsley <paul@pwsan.com>
| * | ARM: OMAP4: Bypass the clock check.Santosh Shilimkar2009-09-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Second reason of OMAP4 boot failure on 2.6.31.rc6, the UART platform data is not getting registered to kernel. Registration was failing because of clock check failure in omap_serial_init(). Below patch fix the same. OMAP4 clock framework patches are still getting discussed on mailing list so till then we need this. Signed-off-by: Syed Rafiuddin <rafiuddin.syed@ti.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
| * | ARM: OMAP4: Fix NULL pointer dereference crash.Santosh Shilimkar2009-09-02
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After the patch series "[PATCH 00/14] OMAP PM fixes for .31-rc" merge in 2.6.31-rc5, the kernel crashed during boot on OMAP4430. This patch fixes it by adding UART4 support and related code. Without this patch omap_serial_init() would produce " NULL pointer dereference" and kernel crashes in the bootup on OMAP4430 platform. Some more info on the merge issue can be found here. More info- http://lkml.org/lkml/2009/8/20/192 Note: While merging this patch,"IO_ADDRESS" needs to be changed to "OMAP2_IO_ADDRESS" if the Tony's below series is already merged in. http://www.mail-archive.com/linux-omap@vger.kernel.org/msg15072.html Signed-off-by: Syed Rafiuddin <rafiuddin.syed@ti.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
| * OMAP2/3: Pass irqflags to 8250 driverVikram Pandita2009-08-28
| | | | | | | | | | | | | | | | | | | | | | Pass irqflags to 8250 driver with platform_data. At least Zoom2 has IRQF_TRIGGER_RISING requirement for the 8250 GPIO irq. This patch is dependent on 8250 driver changes getting accepted upstream: http://git.kernel.org/?p=linux/kernel/git/sfr/linux-next.git;a=commit;h=7053133124d5cdf207c1168c7a0c582a18e12ea7 Signed-off-by: Vikram Pandita <vikram.pandita@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
| * OMAP: UART: drop OMAP_TAG_UART, enable all UARTs, auto-disabled on idleKalle Valo2009-08-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | OMAP tags are deprecrated so drop them. Drop UART config data which decides which UARTs to enable during boot. This is no longer necessary since serial core code disables clocks after inactivity. Background: with new UART idle code, all on-chip UARTs are idled using a configurable inactivity timer (default 5 seconds.) After the inactivity timer, UART clocks are disabled automatically. Signed-off-by: Kalle Valo <kalle.valo@iki.fi> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
| * OMAP: Remove OMAP_IO_ADDRESS, use OMAP1_IO_ADDRESS and OMAP2_IO_ADDRESS insteadTony Lindgren2009-08-28
| | | | | | | | | | | | | | | | | | | | | | Search and replace OMAP_IO_ADDRESS with OMAP1_IO_ADDRESS and OMAP2_IO_ADDRESS, and convert omap_read/write into a functions instead of a macros. Also rename OMAP_MPUIO_VBASE to OMAP1_MPUIO_VBASE. In the long run, most code should use ioremap + __raw_read/write instead. Signed-off-by: Tony Lindgren <tony@atomide.com>
* | Merge branch 'pm-upstream/fixes' of ↵Russell King2009-08-05
|\| | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm into devel-stable
| * OMAP2/3/4: UART: allow in-order port traversalKevin Hilman2009-08-05
| | | | | | | | | | | | | | | | Use list_add_tail() when adding discovered UART ports. This is so traversal using list_for_each_entry() will traverse the list in the order they were found. Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
| * OMAP2/3/4: UART: Allow per-UART disabling wakeup for serial portsKevin Hilman2009-08-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch causes the OMAP uarts to honor the sysfs power/wakeup file for IOPAD wakeups. Before the OMAP was always woken up from off mode on a rs232 signal change. This patch also creates a different platform device for each serial port so that the wakeup properties can be control per port. By default, IOPAD wakeups are enabled for each UART. To disable, # echo disabled > /sys/devices/platform/serial8250.0/power/wakeup Where serial8250.0 can be replaced by .1, or .2 to control the other ports. Original idea and original patch from Russ Dill <russ.dill@gmail.com> Cc: Russ Dill <russ.dill@gmail.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
| * OMAP3: Fixed crash bug with serial + suspendTero Kristo2009-08-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It was possible for an unhandled interrupt to occur if there was incoming serial traffic during wakeup from suspend. This was caused by the code in arch-arm/mach-omap2/serial.c keeping interrupt enabled all the time, but not acking its interrupts. Applies on top of PM branch. Use the PM begin/end hooks to ensure that the "serial idle" interrupts are disabled during the suspend path. Also, since begin/end hooks are now used, use the suspend_state that is passed in the begin hook instead of the enter hook as per the platform_suspend_ops docs. Signed-off-by: Tero Kristo <tero.kristo@nokia.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
| * OMAP4: UART: cleanup special case IRQ handlingKevin Hilman2009-08-05
| | | | | | | | | | | | | | Streamline the OMAP4 special IRQ assignments by putting inside normal init loop instead of having a separate loop. Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* | ARM: OMAP4: Add UART4 supportSyed Rafiuddin2009-07-28
|/ | | | | | This patch adds UART4 support on OMAP4430 development platform. Signed-off-by: Syed Rafiuddin <rafiuddin.syed@ti.com>
* Merge branch 'omap4' into for-nextTony Lindgren2009-05-28
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| * ARM: OMAP4: Add minimal support for omap4Santosh Shilimkar2009-05-28
| | | | | | | | | | | | | | | | | | | | | | | | This patch adds the support for OMAP4. The platform and machine specific headers and sources updated for OMAP4430 SDP platform. OMAP4430 is Texas Instrument's SOC based on ARM Cortex-A9 SMP architecture. It's a dual core SOC with GIC used for interrupt handling and SCU for cache coherency. Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
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