內(nèi)核目錄下 /sys/class/gpio 下實(shí)現(xiàn)

.../arm64/configs/aeon6737t_66_d_n_debug_defconfig | 1 +arch/arm64/configs/aeon6737t_66_d_n_defconfig | 1 +drivers/gpio/gpiolib-sysfs.c | 105 +++++++++++++++++++++drivers/misc/mediatek/aeondws/codegen_F515.dws | Bin 30503 -> 30060 bytesdrivers/misc/mediatek/gpio/aeon_gpio.c | 65 ++++++++++++-include/asm-generic/gpio.h | 9 +-include/linux/gpio.h | 8 ++tools/dct/old_dct/Keypad_YuSu.cmp | 2 +-8 files changed, 188 insertions(+), 3 deletions(-)mode change 100755 => 100644 drivers/misc/mediatek/aeondws/codegen_F515.dwsdiff --git a/arch/arm64/configs/aeon6737t_66_d_n_debug_defconfig b/arch/arm64/configs/aeon6737t_66_d_n_debug_defconfig index ae29cfb..aeba932 100755 --- a/arch/arm64/configs/aeon6737t_66_d_n_debug_defconfig +++ b/arch/arm64/configs/aeon6737t_66_d_n_debug_defconfig @@ -328,6 +328,7 @@ CONFIG_INPUT_UINPUT=yCONFIG_LEGACY_PTY_COUNT=16# CONFIG_HW_RANDOM is not setCONFIG_I2C=y +CONFIG_I2C_CHARDEV=yCONFIG_SPI=yCONFIG_MTK_SPI=yCONFIG_MTK_SMART_BATTERY=y diff --git a/arch/arm64/configs/aeon6737t_66_d_n_defconfig b/arch/arm64/configs/aeon6737t_66_d_n_defconfig index 182fefc..e515d9f 100755 --- a/arch/arm64/configs/aeon6737t_66_d_n_defconfig +++ b/arch/arm64/configs/aeon6737t_66_d_n_defconfig @@ -318,6 +318,7 @@ CONFIG_LEGACY_PTY_COUNT=16# CONFIG_DEVKMEM is not set# CONFIG_HW_RANDOM is not setCONFIG_I2C=y +CONFIG_I2C_CHARDEV=yCONFIG_SPI=yCONFIG_MTK_SPI=yCONFIG_MTK_SMART_BATTERY=y diff --git a/drivers/gpio/gpiolib-sysfs.c b/drivers/gpio/gpiolib-sysfs.c index d9fa798..3d53960 100644 --- a/drivers/gpio/gpiolib-sysfs.c +++ b/drivers/gpio/gpiolib-sysfs.c @@ -604,6 +604,111 @@ fail_unlock:}EXPORT_SYMBOL_GPL(gpiod_export);+/** + * gpiod_export_with_name - export a GPIO through sysfs + * @gpio: gpio to make available, already requested + * @direction_may_change: true if userspace may change gpio direction + * @name: gpio name + * Context: arch_initcall or later + * + * When drivers want to make a GPIO accessible to userspace after they + * have requested it -- perhaps while debugging, or as part of their + * public interface -- they may use this routine. If the GPIO can + * change direction (some can't) and the caller allows it, userspace + * will see "direction" sysfs attribute which may be used to change + * the gpio's direction. A "value" attribute will always be provided. + * + * Returns zero on success, else an error. + */ +int gpiod_export_with_name(struct gpio_desc *desc, bool direction_may_change, + const char *name) +{ + struct gpio_chip *chip; + unsigned long flags; + int status; + const char *ioname = NULL; + struct device *dev; + int offset; + + /* can't export until sysfs is available ... */ + if (!gpio_class.p) { + pr_debug("%s: called too early!\n", __func__); + return -ENOENT; + } + + if (!desc) { + pr_debug("%s: invalid gpio descriptor\n", __func__); + return -EINVAL; + } + + chip = desc->chip; + + mutex_lock(&sysfs_lock); + + /* check if chip is being removed */ + if (!chip || !chip->exported) { + status = -ENODEV; + goto fail_unlock; + } + + spin_lock_irqsave(&gpio_lock, flags); + if (!test_bit(FLAG_REQUESTED, &desc->flags) || + test_bit(FLAG_EXPORT, &desc->flags)) { + spin_unlock_irqrestore(&gpio_lock, flags); + gpiod_dbg(desc, "%s: unavailable (requested=%d, exported=%d)\n", + __func__, + test_bit(FLAG_REQUESTED, &desc->flags), + test_bit(FLAG_EXPORT, &desc->flags)); + status = -EPERM; + goto fail_unlock; + } + + if (!desc->chip->direction_input || !desc->chip->direction_output) + direction_may_change = false; + spin_unlock_irqrestore(&gpio_lock, flags); + + offset = gpio_chip_hwgpio(desc); + //if (desc->chip->names && desc->chip->names[offset]) + // ioname = desc->chip->names[offset]; + ioname = name; + + dev = device_create_with_groups(&gpio_class, desc->chip->dev, + MKDEV(0, 0), desc, gpio_groups, + ioname ? ioname : "gpio%u", + desc_to_gpio(desc)); + if (IS_ERR(dev)) { + status = PTR_ERR(dev); + goto fail_unlock; + } + + if (direction_may_change) { + status = device_create_file(dev, &dev_attr_direction); + if (status) + goto fail_unregister_device; + } + + if (gpiod_to_irq(desc) >= 0 && (direction_may_change || + !test_bit(FLAG_IS_OUT, &desc->flags))) { + status = device_create_file(dev, &dev_attr_edge); + if (status) + goto fail_remove_attr_direction; + } + + set_bit(FLAG_EXPORT, &desc->flags); + mutex_unlock(&sysfs_lock); + return 0; + +fail_remove_attr_direction: + device_remove_file(dev, &dev_attr_direction); +fail_unregister_device: + device_unregister(dev); +fail_unlock: + mutex_unlock(&sysfs_lock); + gpiod_dbg(desc, "%s: status %d\n", __func__, status); + return status; +} +EXPORT_SYMBOL_GPL(gpiod_export_with_name); +static int match_export(struct device *dev, const void *data){return dev_get_drvdata(dev) == data; diff --git a/drivers/misc/mediatek/aeondws/codegen_F515.dws b/drivers/misc/mediatek/aeondws/codegen_F515.dws old mode 100755 new mode 100644 index 098b37bc7435588e385ec4a2d6327ac009e0d587..1dc4dff9c9d0352af33350c2b554529f3402783f GIT binary patch delta 2634 zcmb_eUu;ul6z}bB+uLy+ck5l-&DP#+g@G-ue?|w&x?9=}M%T3)9Sk$<2u32{K(`WN zh}o-&M8+@1gdmANsPRE-t|l5VEXMd`OnDdNK_C2w3r~i`;Q8)t#~m397@B<TJ>NOs z`SbgJ=iGjDi~I9;&YR1O@8c{Mi%iQwD_2bP#kX31z@gSIEZPN}*l0t}?SjM$sCv9u za!ld`7hF*Jn#zmaT$YJ1cZ!%-1t@}un?p`4a?fKa;ah3#!Q~z&E_4T=lCyixc^uoQ z;LQOUCsi-G;4$sCLG?TS$G#8#wqB@q!F`uLthyFjy9&ekQo2|u4I;IndyViCr6ANQ zVQKK%yS51{XU8EmKq?6Zdw5x5h6)si%<(4u4lE{QM4Vn!+=ABB_^}n!NkYXPWE*H| zoY!L*dp_OhmN?Zw5K4&Hc{oEd<^>5$oUmS8&OMh&6(hLDdrdgW_vxc+=?m$REQ-yW zA@%uCO$+B8JkAI*3xn^QLwa!xezmWFiYu(W)3V1(`Ow7&WK<O%cjerDayQW0Sv$zC zUxMV2ko7xpr}cFxcG09$XupMvVXQM~+GT{1Nwc0WPG-zX16p<@zSfaAnj3s3M8pME z#7_=0NOdx;Lw~@D54>F_^G*2s$*DR=%@j7sF5}=+0+s^83VItlWkC(<JrVH;I6J_2 zW9E)Xv`|p7GZ!MR$7Pn-al6k{yM#qoo3N*t+Eps%_L{0>wVRdcY)vUZb%^*TMh4U) zH$ok?)0yEF22X^T2Lsxw%UL(d-xq@2$a7FrGA{Uct$JJ0<r6IKCI2&A6z^L{FfbtC zh9uyMTV8luTv0u%xIYlCVQe5$vG2feLPQ}Y;;&BcLWQoRqY0ggm-?o|?jpu7Lw8=; 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+ + gpio_request(NLS_TRIG, "nls_trig");+ mt_set_gpio_dir(NLS_TRIG, 1);+ gpio_export_with_name(NLS_TRIG, true, "nls_trig");+ + gpio_request(PINGOPIN_EN, "pingopin_en");+ mt_set_gpio_dir(PINGOPIN_EN, 1);+ gpio_export_with_name(PINGOPIN_EN, true, "pingopin_en");+ + gpio_request(PWR_PINGOPIN, "pwr_pingopin");+ mt_set_gpio_dir(PWR_PINGOPIN, 1);+ gpio_export_with_name(PWR_PINGOPIN, true, "pwr_pingopin");+ + gpio_request(PWR_UART, "pwr_uart");+ mt_set_gpio_dir(PWR_UART, 1);+ gpio_export_with_name(PWR_UART, true, "pwr_uart"); + + gpio_request(UART_EN, "uart_en");+ mt_set_gpio_dir(UART_EN, 1);+ gpio_export_with_name(UART_EN, true, "uart_en"); +}+static int aeon_gpio_probe(struct platform_device *pdev){int ret = 0;@@ -161,6 +221,9 @@ static int aeon_gpio_probe(struct platform_device *pdev)AEON_ERR("%s : Cannot find gpio pinctrl!\n", __func__);}+printk("Jason in func:%s\n", __func__);+ custom_gpio_init();+return ret;}@@ -220,4 +283,4 @@ module_exit(eastaeon_gpio_exit);//MODULE_DESCRIPTION("eastaeon gpio driver");//MODULE_AUTHOR("sanford lin <lin.xiufa@eastaeon.com>");-//MODULE_LICENSE("GPL"); \ No newline at end of file +//MODULE_LICENSE("GPL");diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h index d38a294..ccdbe49 100644 --- a/include/asm-generic/gpio.h +++ b/include/asm-generic/gpio.h @@ -113,7 +113,8 @@ static inline int __gpio_to_irq(unsigned gpio)extern int gpio_request_one(unsigned gpio, unsigned long flags, const char *label);extern int gpio_request_array(const struct gpio *array, size_t num);extern void gpio_free_array(const struct gpio *array, size_t num); - +extern int gpiod_export_with_name(struct gpio_desc *desc, bool direction_may_change, + const char *name);/** A sysfs interface can be exported by individual drivers if they want,* but more typically is configured entirely from userspace. @@ -123,6 +124,12 @@ static inline int gpio_export(unsigned gpio, bool direction_may_change)return gpiod_export(gpio_to_desc(gpio), direction_may_change);}+static inline int gpio_export_with_name(unsigned gpio, bool direction_may_change, + const char *name) +{ + return gpiod_export_with_name(gpio_to_desc(gpio), direction_may_change, name); +} +static inline int gpio_export_link(struct device *dev, const char *name,unsigned gpio){ diff --git a/include/linux/gpio.h b/include/linux/gpio.h index 85aa5d0..a43c7e6 100644 --- a/include/linux/gpio.h +++ b/include/linux/gpio.h @@ -188,6 +188,14 @@ static inline int gpio_export(unsigned gpio, bool direction_may_change)return -EINVAL;}+static inline int gpio_export_with_name(unsigned gpio, bool direction_may_change, + const char *name) +{ + /* GPIO can never have been requested or set as {in,out}put */ + WARN_ON(1); + return -EINVAL; +} +static inline int gpio_export_link(struct device *dev, const char *name,unsigned gpio){ diff --git a/tools/dct/old_dct/Keypad_YuSu.cmp b/tools/dct/old_dct/Keypad_YuSu.cmp index 0986f7e..b63e689 100644 --- a/tools/dct/old_dct/Keypad_YuSu.cmp +++ b/tools/dct/old_dct/Keypad_YuSu.cmp @@ -67,7 +67,7 @@ KEY_WKEY_XKEY_YKEY_Z - +KEY_F14[Key_code]0228 -- 1.9.1

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