Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756614AbcDGOr6 (ORCPT ); Thu, 7 Apr 2016 10:47:58 -0400 Received: from mail-yw0-f196.google.com ([209.85.161.196]:36462 "EHLO mail-yw0-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756304AbcDGOr4 (ORCPT ); Thu, 7 Apr 2016 10:47:56 -0400 From: William Breathitt Gray To: gregkh@linuxfoundation.org, tglx@linutronix.de, jic23@kernel.org, knaack.h@gmx.de, lars@metafoo.de, pmeerw@pmeerw.net, wim@iguana.be, linux@roeck-us.net, linus.walleij@linaro.org, gnurou@gmail.com Cc: linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-gpio@vger.kernel.org, William Breathitt Gray Subject: [PATCH 00/10] Use the ISA bus driver for PC/104 and ISA devices Date: Thu, 7 Apr 2016 10:47:21 -0400 Message-Id: X-Mailer: git-send-email 2.7.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4054 Lines: 83 This patchset is based on top of commit 3a3a5fece6f2 ("fs: kernfs: Replace CURRENT_TIME by current_fs_time()") of the driver-core-next branch of the driver-core repository. Two new ISA bus driver macros are introduced in this patchset: module_isa_driver and max_num_isa_dev. The module_isa_driver macro is a helper macro for ISA drivers which do not do anything special in module init/exit. This macro is modelled after the module_pci_driver macro and eliminates a lot of module init/exit boilerplate code. The max_num_isa_dev macro is used to determine the maximum possible number of ISA devices which may be registered in the I/O port address space given the address extent of the ISA devices. This macro is useful for computing the maximum number of elements necessary to hold the base addresses and interrupt line numbers of ISA devices for the respective ISA driver. Lacking other documentation, I often found myself repeatedly returning to the commit message of the initial commit for drivers/base/isa.c authored by Rene Herman. A verbatim copy of this commit message has been added to Documentation/isa.txt, along with descriptions for the module_isa driver and max_num_isa_dev macros, for posterity. The Apex Embedded Systems STX104 may be used on 64-bit X86 systems. This patchset allows the Apex Embedded Systems STX104 DAC driver to be compiled for both 32-bit and 64-bit X86 systems by depending on the ISA_BUS configuration option rather than the ISA configuration option. Similarly, many PC/104 and ISA devices may also be used on 64-bit X86 systems. The platform driver had been used to enable support for these devices on 64-bit X86 systems. With the introduction of the ISA_BUS configuration option, the respective drivers for these devices may now utilize the ISA bus driver without restricting support to only 32-bit X86 systems; the following drivers now utilize the ISA bus driver over the platform driver: * WinSystems EBC-C384 watchdog timer * ACCES 104-DIO-48E GPIO driver * ACCES 104-IDI-48 GPIO driver * ACCES 104-IDIO-16 GPIO driver * WinSystems WS16C48 GPIO driver With the utilization of the ISA bus driver, the GPIO drivers in this patchset may now support multiple devices for each of their respective ISA drivers. A naming convention for module array parameters has been set based on the Apex Embedded Systems STX104 DAC driver. The "base" array module parameter sets the I/O port base address of each device. The "irq" array module parameter sets the interrupt line number of each device. Each element of the "base" array corresponds to a discrete device; each element of the "irq" array corresponds to the respective device addressed in the respective "base" array element. William Breathitt Gray (10): isa: Implement the module_isa_driver macro isa: Implement the max_num_isa_dev macro Documentation: Add ISA bus driver documentation iio: stx104: Change STX104 dependency to ISA_BUS iio: stx104: Utilize the module_isa_driver and max_num_isa_dev macros watchdog: ebc-c384_wdt: Utilize the ISA bus driver gpio: 104-dio-48e: Utilize the ISA bus driver gpio: 104-idi-48: Utilize the ISA bus driver gpio: 104-idio-16: Utilize the ISA bus driver gpio: ws16c48: Utilize the ISA bus driver Documentation/isa.txt | 121 ++++++++++++++++++++++++++++++++++++++++ MAINTAINERS | 5 ++ drivers/gpio/Kconfig | 38 +++++++------ drivers/gpio/gpio-104-dio-48e.c | 106 +++++++++++++---------------------- drivers/gpio/gpio-104-idi-48.c | 86 ++++++++++------------------ drivers/gpio/gpio-104-idio-16.c | 85 ++++++++++------------------ drivers/gpio/gpio-ws16c48.c | 88 ++++++++++------------------- drivers/iio/dac/Kconfig | 2 +- drivers/iio/dac/stx104.c | 24 +------- drivers/watchdog/Kconfig | 2 +- drivers/watchdog/ebc-c384_wdt.c | 43 ++++---------- include/linux/isa.h | 32 +++++++++++ 12 files changed, 317 insertions(+), 315 deletions(-) create mode 100644 Documentation/isa.txt -- 2.7.3