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author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-06-29 20:11:10 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-06-29 20:11:10 +0300 |
commit | e5476f57b32621eb8eab892a908df4d0b4808835 (patch) | |
tree | 5b8afd97980b98201aba7aa24cf33c7b389e596d /Documentation/translations/zh_TW | |
parent | ff7ddcf0db48a7d9ae536eb0875428117be1d1f1 (diff) | |
parent | 0ff9f5e57c5bb45b6b807a4d466228de39d8cd2f (diff) | |
download | linux-e5476f57b32621eb8eab892a908df4d0b4808835.tar.xz |
Merge tag 'gpio-updates-for-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio updates from Bartosz Golaszewski:
"We have two new drivers, some improvements to the core code, lots of
different updates to existing GPIO drivers and some dt-bindings on
top.
There's nothing controversial in here and almost everything has been
in next for more than a week (95% a lot longer than this). The only
thing that has spent less time in next is a new driver so no risk of
regressions.
The single merge pulls in changes that remove all usage of global GPIO
numbers from arch/arm/mach-omap.
Core GPIO library:
- remove unused symbols
- don't spam the kernel log with messages about hogs
- remove old sysfs API cruft
- improve handling of GPIO masks
New drivers:
- add a driver for the BlueField-3 GPIO controller
- add GPIO support for the TPS65219 PMIC
Driver improvements:
- extend the gpio-aggregator driver to support ramp-up/ramp-down
delay
- remove unnecessary CONFIG_OF guards from gpio-aggregator
- readability improvements in gpio-tangier
- switch i2c drivers back to using probe() now that it's been
converted in the i2c subsystem to not taking the id parameter
- remove unused inclusions of of_gpio.h in several drivers
- make pm ops static in gpio-davinci and fix a comment
- use more devres in drivers to shrink and simplify the code
- add missing include in gpio-sa1100
- add HAS_IOPORT KConfig dependency where needed
- add permissions checks before accessing pins in gpio-tegra186
- convert the gpio-zynq driver to using immutable irqchips
- preserve output settings set by the bootloader in gpio-mpc8xxx
Selftests:
- tweak the variable naming in script tests
Device tree updates:
- convert gpio-mmio and gpio-stmpe to YAML
- add parsing of GPIO hogs to gpio-vf610
- add bindings for the Cirrus EP93xx GPIO controller
- add gpio-line-names property to the gpio-pca9570 bindings
- extend the binding for x-powers,axp209 with another block"
* tag 'gpio-updates-for-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (58 commits)
of: unittest: drop assertions for GPIO hog messages
gpiolib: Drop unused domain_ops memeber of GPIO IRQ chip
gpio: synq: remove unused zynq_gpio_irq_reqres/zynq_gpio_irq_relres
dt-bindings: gpio: gpio-vf610: Add parsing of hogs
gpio: lpc18xx: Remove unused of_gpio.h inclusion
gpio: xra1403: Remove unused of_gpio.h inclusion
gpio: mpc8xxx: Remove unused of_gpio.h inclusion
dt-bindings: gpio: Add Cirrus EP93xx
gpio: mpc8xxx: latch GPIOs state on module load when configured as output
selftests: gpio: gpio-sim: Use same variable name for sysfs pathname
gpio: mlxbf3: Add gpio driver support
gpio: delay: Remove duplicative functionality
gpio: aggregator: Set up a parser of delay line parameters
gpio: aggregator: Support delay for setting up individual GPIOs
gpio: aggregator: Remove CONFIG_OF and of_match_ptr() protections
dt-bindings: gpio: pca9570: add gpio-line-names property
gpiolib: remove unused gpio_cansleep()
gpio: tps65219: add GPIO support for TPS65219 PMIC
gpio: zynq: fix zynqmp_gpio not an immutable chip warning
gpio: davinci: make davinci_gpio_dev_pm_ops static
...
Diffstat (limited to 'Documentation/translations/zh_TW')
-rw-r--r-- | Documentation/translations/zh_TW/gpio.txt | 31 |
1 files changed, 3 insertions, 28 deletions
diff --git a/Documentation/translations/zh_TW/gpio.txt b/Documentation/translations/zh_TW/gpio.txt index 62e560ffe628..b93788a2628b 100644 --- a/Documentation/translations/zh_TW/gpio.txt +++ b/Documentation/translations/zh_TW/gpio.txt @@ -161,8 +161,7 @@ get/set(獲取/設置)函數調用沒法返回錯誤,且有可能是配置錯誤 大多數 GPIO 控制器可以通過內存讀/寫指令來訪問。這些指令不會休眠,可以 安全地在硬(非線程)中斷例程和類似的上下文中完成。 -對於那些用 gpio_cansleep()測試總是返回失敗的 GPIO(見下文),使用 -以下的函數訪問: +對於那些 GPIO,使用以下的函數訪問: /* GPIO 輸入:返回零或非零 */ int gpio_get_value(unsigned gpio); @@ -193,11 +192,6 @@ GPIO值是布爾值,零表示低電平,非零表示高電平。當讀取一 GPIO 值的命令需要等待其信息排到隊首才發送命令,再獲得其反饋。期間需要 休眠,這不能在 IRQ 例程(中斷上下文)中執行。 -支持此類 GPIO 的平台通過以下函數返回非零值來區分出這種 GPIO。(此函數需要 -一個之前通過 gpio_request 分配到的有效 GPIO 編號): - - int gpio_cansleep(unsigned gpio); - 爲了訪問這種 GPIO,內核定義了一套不同的函數: /* GPIO 輸入:返回零或非零 ,可能會休眠 */ @@ -206,7 +200,6 @@ GPIO 值的命令需要等待其信息排到隊首才發送命令,再獲得其 /* GPIO 輸出,可能會休眠 */ void gpio_set_value_cansleep(unsigned gpio, int value); - 訪問這樣的 GPIO 需要一個允許休眠的上下文,例如線程 IRQ 處理例程,並用以上的 訪問函數替換那些沒有 cansleep()後綴的自旋鎖安全訪問函數。 @@ -300,11 +293,6 @@ gpio_request()前將這類細節配置好,例如使用 pinctrl 子系統的映 * GPIOF_INIT_LOW - 在作爲輸出時,初始值爲低電平 * GPIOF_INIT_HIGH - 在作爲輸出時,初始值爲高電平 - * GPIOF_OPEN_DRAIN - gpio引腳爲開漏信號 - * GPIOF_OPEN_SOURCE - gpio引腳爲源極開路信號 - - * GPIOF_EXPORT_DIR_FIXED - 將 gpio 導出到 sysfs,並保持方向 - * GPIOF_EXPORT_DIR_CHANGEABLE - 同樣是導出, 但允許改變方向 因爲 GPIOF_INIT_* 僅有在配置爲輸出的時候才存在,所以有效的組合爲: @@ -312,18 +300,6 @@ gpio_request()前將這類細節配置好,例如使用 pinctrl 子系統的映 * GPIOF_OUT_INIT_LOW - 配置爲輸出,並初始化爲低電平 * GPIOF_OUT_INIT_HIGH - 配置爲輸出,並初始化爲高電平 -當設置 flag 爲 GPIOF_OPEN_DRAIN 時,則假設引腳是開漏信號。這樣的引腳 -將不會在輸出模式下置1。這樣的引腳需要連接上拉電阻。通過使能這個標誌,gpio庫 -將會在被要求輸出模式下置1時將引腳變爲輸入狀態來使引腳置高。引腳在輸出模式下 -通過置0使其輸出低電平。 - -當設置 flag 爲 GPIOF_OPEN_SOURCE 時,則假設引腳爲源極開路信號。這樣的引腳 -將不會在輸出模式下置0。這樣的引腳需要連接下拉電阻。通過使能這個標誌,gpio庫 -將會在被要求輸出模式下置0時將引腳變爲輸入狀態來使引腳置低。引腳在輸出模式下 -通過置1使其輸出高電平。 - -將來這些標誌可能擴展到支持更多的屬性。 - 更進一步,爲了更簡單地聲明/釋放多個 GPIO,'struct gpio'被引進來封裝所有 這三個領域: @@ -466,8 +442,8 @@ GPIO 實現者的框架 (可選) ------- 爲了支持這個框架,一個平台的 Kconfig 文件將會 "select"(選擇) ARCH_REQUIRE_GPIOLIB 或 ARCH_WANT_OPTIONAL_GPIOLIB,並讓它的 -<asm/gpio.h> 包含 <asm-generic/gpio.h>,同時定義三個方法: -gpio_get_value()、gpio_set_value()和 gpio_cansleep()。 +<asm/gpio.h> 包含 <asm-generic/gpio.h>,同時定義二個方法: +gpio_get_value()、gpio_set_value()。 它也應提供一個 ARCH_NR_GPIOS 的定義值,這樣可以更好地反映該平台 GPIO 的實際數量,節省靜態表的空間。(這個定義值應該包含片上系統內建 GPIO 和 @@ -485,7 +461,6 @@ ARCH_WANT_OPTIONAL_GPIOLIB 意味著 gpiolib 核心默認關閉,且用戶可以 #define gpio_get_value __gpio_get_value #define gpio_set_value __gpio_set_value - #define gpio_cansleep __gpio_cansleep 這些定義可以用更理想的實現方法替代,那就是使用經過邏輯優化的內聯函數來訪問 基於特定片上系統的 GPIO。例如,若引用的 GPIO (寄存器位偏移)是常量「12」, |