diff options
Diffstat (limited to 'target/linux/brcm2708/patches-3.10/0055-Add-bitbanging-pullups-use-them-for-w1-gpio.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-3.10/0055-Add-bitbanging-pullups-use-them-for-w1-gpio.patch | 25 |
1 files changed, 18 insertions, 7 deletions
diff --git a/target/linux/brcm2708/patches-3.10/0055-Add-bitbanging-pullups-use-them-for-w1-gpio.patch b/target/linux/brcm2708/patches-3.10/0055-Add-bitbanging-pullups-use-them-for-w1-gpio.patch index f71bc9ffe0..cd5fbc755c 100644 --- a/target/linux/brcm2708/patches-3.10/0055-Add-bitbanging-pullups-use-them-for-w1-gpio.patch +++ b/target/linux/brcm2708/patches-3.10/0055-Add-bitbanging-pullups-use-them-for-w1-gpio.patch @@ -1,7 +1,7 @@ -From 28ca85a46bbdae4152b48a669872ac205d053856 Mon Sep 17 00:00:00 2001 +From 0a2fa5a85c2ed9599acb2215f24e06db0379a133 Mon Sep 17 00:00:00 2001 From: popcornmix <popcornmix@gmail.com> Date: Wed, 1 May 2013 21:14:28 +0100 -Subject: [PATCH 055/174] Add bitbanging pullups, use them for w1-gpio +Subject: [PATCH 055/196] Add bitbanging pullups, use them for w1-gpio Allows parasite power to work, uses module option pullup=1 --- @@ -11,6 +11,8 @@ Allows parasite power to work, uses module option pullup=1 drivers/w1/w1_io.c | 18 +++++++++++++++--- 4 files changed, 50 insertions(+), 10 deletions(-) +diff --git a/drivers/w1/masters/w1-gpio.c b/drivers/w1/masters/w1-gpio.c +index 46d9701..f615f80 100644 --- a/drivers/w1/masters/w1-gpio.c +++ b/drivers/w1/masters/w1-gpio.c @@ -23,6 +23,9 @@ @@ -40,7 +42,7 @@ Allows parasite power to work, uses module option pullup=1 #if defined(CONFIG_OF) static struct of_device_id w1_gpio_dt_ids[] = { { .compatible = "w1-gpio" }, -@@ -133,6 +146,13 @@ static int w1_gpio_probe(struct platform +@@ -133,6 +146,13 @@ static int w1_gpio_probe(struct platform_device *pdev) master->write_bit = w1_gpio_write_bit_dir; } @@ -54,6 +56,8 @@ Allows parasite power to work, uses module option pullup=1 err = w1_add_master_device(master); if (err) { dev_err(&pdev->dev, "w1_add_master device failed\n"); +diff --git a/drivers/w1/w1.h b/drivers/w1/w1.h +index 45908e5..0ba75f6 100644 --- a/drivers/w1/w1.h +++ b/drivers/w1/w1.h @@ -148,6 +148,12 @@ struct w1_bus_master @@ -69,9 +73,11 @@ Allows parasite power to work, uses module option pullup=1 /** Really nice hardware can handles the different types of ROM search * w1_master* is passed to the slave found callback. */ +diff --git a/drivers/w1/w1_int.c b/drivers/w1/w1_int.c +index 5a98649..a4d69b6 100644 --- a/drivers/w1/w1_int.c +++ b/drivers/w1/w1_int.c -@@ -117,19 +117,21 @@ int w1_add_master_device(struct w1_bus_m +@@ -117,19 +117,21 @@ int w1_add_master_device(struct w1_bus_master *master) printk(KERN_ERR "w1_add_master_device: invalid function set\n"); return(-EINVAL); } @@ -100,9 +106,11 @@ Allows parasite power to work, uses module option pullup=1 /* Lock until the device is added (or not) to w1_masters. */ mutex_lock(&w1_mlock); /* Search for the first available id (starting at 1). */ +diff --git a/drivers/w1/w1_io.c b/drivers/w1/w1_io.c +index e10acc2..667fdd5 100644 --- a/drivers/w1/w1_io.c +++ b/drivers/w1/w1_io.c -@@ -127,10 +127,22 @@ static void w1_pre_write(struct w1_maste +@@ -127,10 +127,22 @@ static void w1_pre_write(struct w1_master *dev) static void w1_post_write(struct w1_master *dev) { if (dev->pullup_duration) { @@ -117,14 +125,17 @@ Allows parasite power to work, uses module option pullup=1 + } else if (dev->bus_master->bitbang_pullup) { + dev->bus_master-> + bitbang_pullup(dev->bus_master->data, 1); - msleep(dev->pullup_duration); ++ msleep(dev->pullup_duration); + dev->bus_master-> + bitbang_pullup(dev->bus_master->data, 0); + } + } else { -+ msleep(dev->pullup_duration); + msleep(dev->pullup_duration); + } + dev->pullup_duration = 0; } } +-- +1.9.1 + |