Hi Charu,
On 11/23/2010 3:56 PM, Varadarajan, Charulatha wrote:
Implement OMAP GPIO module in platform device model. OMAP2+ specific GPIO
module uses hwmod FW.
Tested on OMAP2430, OMAP44430, OMAP3430 SDP boards, OMAP4430 Blaze board
How did you get some top secret samples of the ultra new *44430* device
running at 16.5 GHz?
That device should not be released publicly before 10 years ;-)
Benoit
and zoom3 board. Verified that this patch series does not break the OMAP1
build.
Version History:
---------------
v7 Series:
- Use gpio iclks as main_clk in OMAP3& OMAP4
- Implement GPIO as a platform device (use hwmod FW for OMAP2+)
and the implementation is similar to current GPIO code. Does not
modify the gpio suspend/ resume/ prepare for odle and resume after
idle code and these modifications would be done in a separate patch
series. This was suggested by Kevin in another internal email thread.
v6 Series:
Some links for v6 series:
https://patchwork.kernel.org/patch/189742/
https://patchwork.kernel.org/patch/189822/
https://patchwork.kernel.org/patch/189832/
Comments Fixed in v6:
-use PM runtime APIs for gpio in cpu idle/resume after
idle path when interrupts are enabled.
-Do not use omap_device_* calls in the gpio driver
-Use clock alias names for debounce clocks while using clock
framework APIs to do clk_get.
-do a kfree of pdata after doing omap_device_build()
-use PM runtime APIs during probe before and after accessing
gpio registers
-Remove sysconfig register access from GPIO driver
-Use ARRAY_SIZE instead on size_of in OMAP1 gpio_init
v5 Series:
Some links for v5 series:
https://patchwork.kernel.org/patch/117790/
https://patchwork.kernel.org/patch/117789/
https://patchwork.kernel.org/patch/117788/
https://patchwork.kernel.org/patch/117785/
https://patchwork.kernel.org/patch/117796/
Comments Fixed in v5:
- Use dev_pm_ops instead of sys_dev_class
- Use runtime suspend/resume hooks for GPIO device
- extend the usage of mod_usage flag to all cpu classes.(Earlier it was
used only for OMAP2+)
- Make gpio_context as part of gpio_bank structure
v4 Series:
Some links for v4 series:
https://patchwork.kernel.org/patch/107411/
Comments Fixed in v4:
- Remove gpio_bank_count from dev_attr field and derive it from
hwmod class iteration count
- Add TODOs for future omap gpio code cleanup related activity
- Rename gpio's platform_data 'method' to 'bank_type'
- Rename gpio's platform_data 'gpio_bank_bits' to 'gpio_bank_width'
- Add 'rev' field to gpio class in hwmod datbase and get 'bank_type'
based on 'rev' field
- Filename removed from file description when a new file is created
v3 Series:
Some of the v3 links:
https://patchwork.kernel.org/patch/106224/
Comments Fixed in v3:
- .module_offs populated in hwmod structures
- If not defined CONFIG_PM_RUNTIME is not handled in GPIO driver
- No changes to mach-omap2/clockxxxx-data.c to handle clocks by dev ptr
as it is taken care using clock get by name in hwmod& omap_device layer
- Using "ick" instead of "arm_gpio_ck" for OMAP15xx clock
- SoC base addresses moved to plat-omap/omapXXXX.h that should be
used only by the omap_hwmod_xxxx_data.c file
- OMAP2/3 hwmod structures naming convention changed as it is
followed in OMAP4
- omap24xx_gpio_init() uses cpu_is_omap24xx() instead of separate
checks for 2420& 2430 in OMAP2 specific init call (mach-omap layer)
- Reason for using postcore_initcall is added to patch description
- Comments added for usage of dbck_flag and other elements
in dev_attr structure
- Uses dev_dbg() and dev_err() instead of pr_dbg() and pr_err()
- Corrects the gpio clock details in OMAP4 hwmod database
v2 series:
Some important links to patch v2 series and comments:
http://www.mail-archive.com/[email protected]/msg30262.html
http://www.mail-archive.com/[email protected]/msg28787.html
http://www.mail-archive.com/[email protected]/msg30263.html
http://www.mail-archive.com/[email protected]/msg30295.html
http://www.mail-archive.com/[email protected]/msg30259.html
http://www.mail-archive.com/[email protected]/msg28933.html
Comments Fixed in V2:
- GPIO dev attr was added for SoC specific chip info (eg., gpio bank count)
- Removed omap_gpio_init() usage from board files
- platform_get_resource() used instead of pdata->base for
OMAP2+ base addresses
- postcore_initcall used for gpio init instead of making
GPIO as an early platform device. SoC specific gpio_init
needs to be done before machine_init functions access gpio
APIs. Hence making SoC specific gpio_init as postcore_initcall.
- getting gpio dbck is moved to omap_set_gpio_debounce()
instead of doing it in probe
v1 series:
Some important links to patch v1 series and comments:
http://www.mail-archive.com/[email protected]/msg26934.html
http://www.mail-archive.com/[email protected]/msg27860.html
http://www.mail-archive.com/[email protected]/msg28183.html
Highlights in v1:
- Introduces SoC specific functions at mach-omap layer
- Implements GPIO as a platform device
- Make gpio an early device and make it implemented in
Benoit Cousson (1):
OMAP4: hwmod data: Add GPIO
Varadarajan, Charulatha (10):
OMAP: GPIO: prepare for platform driver
OMAP15xx: GPIO: Introduce support for GPIO init
OMAP16xx: GPIO: Introduce support for GPIO init
OMAP7xx: GPIO: Introduce support for GPIO init
OMAP2420: hwmod data: Add GPIO
OMAP2430: hwmod data: Add GPIO
OMAP3: hwmod data: Add GPIO
OMAP2+: GPIO: device registration
OMAP: GPIO: Implement GPIO as a platform device
OMAP: GPIO: Remove omap_gpio_init()
arch/arm/mach-omap1/Makefile | 6 +
arch/arm/mach-omap1/board-ams-delta.c | 1 -
arch/arm/mach-omap1/board-fsample.c | 1 -
arch/arm/mach-omap1/board-h2.c | 1 -
arch/arm/mach-omap1/board-h3.c | 1 -
arch/arm/mach-omap1/board-htcherald.c | 2 -
arch/arm/mach-omap1/board-innovator.c | 1 -
arch/arm/mach-omap1/board-nokia770.c | 1 -
arch/arm/mach-omap1/board-osk.c | 1 -
arch/arm/mach-omap1/board-palmte.c | 1 -
arch/arm/mach-omap1/board-palmz71.c | 1 -
arch/arm/mach-omap1/board-perseus2.c | 1 -
arch/arm/mach-omap1/board-sx1.c | 1 -
arch/arm/mach-omap1/board-voiceblue.c | 1 -
arch/arm/mach-omap1/clock_data.c | 4 +-
arch/arm/mach-omap1/gpio15xx.c | 98 +++++
arch/arm/mach-omap1/gpio16xx.c | 199 +++++++++
arch/arm/mach-omap1/gpio7xx.c | 261 ++++++++++++
arch/arm/mach-omap2/Makefile | 2 +-
arch/arm/mach-omap2/board-2430sdp.c | 1 -
arch/arm/mach-omap2/board-3430sdp.c | 1 -
arch/arm/mach-omap2/board-3630sdp.c | 1 -
arch/arm/mach-omap2/board-4430sdp.c | 1 -
arch/arm/mach-omap2/board-am3517crane.c | 2 -
arch/arm/mach-omap2/board-am3517evm.c | 1 -
arch/arm/mach-omap2/board-apollon.c | 1 -
arch/arm/mach-omap2/board-cm-t35.c | 1 -
arch/arm/mach-omap2/board-cm-t3517.c | 1 -
arch/arm/mach-omap2/board-devkit8000.c | 1 -
arch/arm/mach-omap2/board-h4.c | 1 -
arch/arm/mach-omap2/board-igep0020.c | 1 -
arch/arm/mach-omap2/board-igep0030.c | 1 -
arch/arm/mach-omap2/board-ldp.c | 1 -
arch/arm/mach-omap2/board-n8x0.c | 1 -
arch/arm/mach-omap2/board-omap3beagle.c | 1 -
arch/arm/mach-omap2/board-omap3evm.c | 1 -
arch/arm/mach-omap2/board-omap3logic.c | 1 -
arch/arm/mach-omap2/board-omap3pandora.c | 1 -
arch/arm/mach-omap2/board-omap3stalker.c | 1 -
arch/arm/mach-omap2/board-omap3touchbook.c | 1 -
arch/arm/mach-omap2/board-omap4panda.c | 1 -
arch/arm/mach-omap2/board-overo.c | 1 -
arch/arm/mach-omap2/board-rx51.c | 1 -
arch/arm/mach-omap2/board-zoom.c | 1 -
arch/arm/mach-omap2/gpio.c | 103 +++++
arch/arm/mach-omap2/omap_hwmod_2420_data.c | 229 ++++++++++
arch/arm/mach-omap2/omap_hwmod_2430_data.c | 279 +++++++++++++
arch/arm/mach-omap2/omap_hwmod_3xxx_data.c | 360 ++++++++++++++++
arch/arm/mach-omap2/omap_hwmod_44xx_data.c | 341 +++++++++++++++
arch/arm/plat-omap/gpio.c | 622 +++++++++-------------------
arch/arm/plat-omap/include/plat/gpio.h | 24 +-
51 files changed, 2103 insertions(+), 465 deletions(-)
create mode 100644 arch/arm/mach-omap1/gpio15xx.c
create mode 100644 arch/arm/mach-omap1/gpio16xx.c
create mode 100644 arch/arm/mach-omap1/gpio7xx.c
create mode 100644 arch/arm/mach-omap2/gpio.c
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