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authorÁlvaro Fernández Rojas <noltari@gmail.com>2016-12-02 11:50:26 +0100
committerÁlvaro Fernández Rojas <noltari@gmail.com>2016-12-04 12:32:04 +0100
commit011f2c26f1b62e309f2eac6a3101bfe0a3c76c7e (patch)
treebe53d4f11f7625508ee3aea9889e854ab5b5f263 /target/linux/brcm2708/patches-4.4/0530-spi-bcm2835-Remove-unused-code.patch
parent4257f6548b9480cdb436115b63d5c134c5e91303 (diff)
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brcm2708: update linux 4.4 patches to latest version
As usual these patches were extracted and rebased from the raspberry pi repo: https://github.com/raspberrypi/linux/tree/rpi-4.4.y Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0530-spi-bcm2835-Remove-unused-code.patch')
-rw-r--r--target/linux/brcm2708/patches-4.4/0530-spi-bcm2835-Remove-unused-code.patch93
1 files changed, 93 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0530-spi-bcm2835-Remove-unused-code.patch b/target/linux/brcm2708/patches-4.4/0530-spi-bcm2835-Remove-unused-code.patch
new file mode 100644
index 0000000000..46466c8e27
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.4/0530-spi-bcm2835-Remove-unused-code.patch
@@ -0,0 +1,93 @@
+From c78b3b917d305e617ad11d147c9668b1df338208 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Tue, 8 Nov 2016 21:35:38 +0000
+Subject: [PATCH] spi-bcm2835: Remove unused code
+
+---
+ drivers/spi/spi-bcm2835.c | 66 -----------------------------------------------
+ 1 file changed, 66 deletions(-)
+
+--- a/drivers/spi/spi-bcm2835.c
++++ b/drivers/spi/spi-bcm2835.c
+@@ -679,17 +679,8 @@ static void bcm2835_spi_set_cs(struct sp
+ bcm2835_wr(bs, BCM2835_SPI_CS, cs);
+ }
+
+-static int chip_match_name(struct gpio_chip *chip, void *data)
+-{
+- return !strcmp(chip->label, data);
+-}
+-
+ static int bcm2835_spi_setup(struct spi_device *spi)
+ {
+- int err;
+- struct gpio_chip *chip;
+- struct device_node *pins;
+- u32 pingroup_index;
+ /*
+ * sanity checking the native-chipselects
+ */
+@@ -707,63 +698,6 @@ static int bcm2835_spi_setup(struct spi_
+ return -EINVAL;
+ }
+
+-#if 0
+- /* now translate native cs to GPIO */
+- /* first look for chip select pins in the devices pin groups */
+- for (pingroup_index = 0;
+- (pins = of_parse_phandle(spi->master->dev.of_node,
+- "pinctrl-0",
+- pingroup_index)) != 0;
+- pingroup_index++) {
+- u32 pin;
+- u32 pin_index;
+- for (pin_index = 0;
+- of_property_read_u32_index(pins,
+- "brcm,pins",
+- pin_index,
+- &pin) == 0;
+- pin_index++) {
+- if (((spi->chip_select == 0) &&
+- ((pin == 8) || (pin == 36) || (pin == 46))) ||
+- ((spi->chip_select == 1) &&
+- ((pin == 7) || (pin == 35)))) {
+- spi->cs_gpio = pin;
+- break;
+- }
+- }
+- of_node_put(pins);
+- }
+- /* if that fails, assume GPIOs 7-11 are used */
+- if (!gpio_is_valid(spi->cs_gpio) ) {
+- /* get the gpio chip for the base */
+- chip = gpiochip_find("pinctrl-bcm2835", chip_match_name);
+- if (!chip)
+- return 0;
+-
+- /* and calculate the real CS */
+- spi->cs_gpio = chip->base + 8 - spi->chip_select;
+- }
+-
+- /* and set up the "mode" and level */
+- dev_info(&spi->dev, "setting up native-CS%i as GPIO %i\n",
+- spi->chip_select, spi->cs_gpio);
+-
+- /* set up GPIO as output and pull to the correct level */
+- err = gpio_direction_output(spi->cs_gpio,
+- (spi->mode & SPI_CS_HIGH) ? 0 : 1);
+- if (err) {
+- dev_err(&spi->dev,
+- "could not set CS%i gpio %i as output: %i",
+- spi->chip_select, spi->cs_gpio, err);
+- return err;
+- }
+- /* the implementation of pinctrl-bcm2835 currently does not
+- * set the GPIO value when using gpio_direction_output
+- * so we are setting it here explicitly
+- */
+- gpio_set_value(spi->cs_gpio, (spi->mode & SPI_CS_HIGH) ? 0 : 1);
+-#endif
+-
+ return 0;
+ }
+