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authorRafał Miłecki <rafal@milecki.pl>2017-03-22 21:09:00 +0100
committerRafał Miłecki <rafal@milecki.pl>2017-03-24 08:06:35 +0100
commitfce21ae4ccfcee0c28fb18f5507e145fb0b02dec (patch)
tree6c29b7c1f65945991d0cae13af012e6c14adc713 /target/linux/brcm2708/patches-4.9/950-0017-spi-bcm2835-Remove-unused-code.patch
parent46e390322a58bdc632ee43fdf9d14115dac26e7a (diff)
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brcm2708: rename all patches from raspberrypi git tree to use 950 prefix
Right now all brcm2708 patches are extracted from the non-mainline raspberrypi/linux git tree. Many of them are hacks and/or are unneeded in LEDE. Raspberry Pi is getting better and better mainline support so it would be nice to finally start maintaining patches in a cleaner way: 1) Backport patches accepted in upstream tree 2) Start using upstream drivers 3) Pick only these patches that are needed for more complete support Handling above tasks requires grouping patches - ideally using the same prefixes as generic ones. It means we should rename existing patches to use some high prefix. This will allow e.g. use 0xx for backported code. Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Stijn Tintel <stijn@linux-ipv6.be>
Diffstat (limited to 'target/linux/brcm2708/patches-4.9/950-0017-spi-bcm2835-Remove-unused-code.patch')
-rw-r--r--target/linux/brcm2708/patches-4.9/950-0017-spi-bcm2835-Remove-unused-code.patch88
1 files changed, 88 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.9/950-0017-spi-bcm2835-Remove-unused-code.patch b/target/linux/brcm2708/patches-4.9/950-0017-spi-bcm2835-Remove-unused-code.patch
new file mode 100644
index 0000000..08577fc
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.9/950-0017-spi-bcm2835-Remove-unused-code.patch
@@ -0,0 +1,88 @@
+From 21f7f9d8146dd9e5a860198781febf78aafee3d1 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 | 61 -----------------------------------------------
+ 1 file changed, 61 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
+ */
+@@ -707,58 +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;
+- }
+-#endif
+-
+ return 0;
+ }
+