diff options
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.patch | 93 |
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; + } + |