bcm27xx: remove linux 4.19 support

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 0 insertions, 256 deletions

diff --git a/target/linux/bcm27xx/patches-4.19/950-0088-bcm2835-virtgpio-Virtual-GPIO-driver.patch b/target/linux/bcm27xx/patches-4.19/950-0088-bcm2835-virtgpio-Virtual-GPIO-driver.patch
deleted file mode 100644
index 6259fdc101..0000000000
--- a/target/linux/bcm27xx/patches-4.19/950-0088-bcm2835-virtgpio-Virtual-GPIO-driver.patch
+++ /dev/null
@@ -1,256 +0,0 @@
-From 0f05af4c96c0272bb431ace33dd284a891e4fe41 Mon Sep 17 00:00:00 2001
-From: popcornmix <popcornmix@gmail.com>
-Date: Tue, 23 Feb 2016 19:56:04 +0000
-Subject: [PATCH] bcm2835-virtgpio: Virtual GPIO driver
-
-Add a virtual GPIO driver that uses the firmware mailbox interface to
-request that the VPU toggles LEDs.
----
- drivers/gpio/Kconfig         |   6 +
- drivers/gpio/Makefile        |   1 +
- drivers/gpio/gpio-bcm-virt.c | 214 +++++++++++++++++++++++++++++++++++
- 3 files changed, 221 insertions(+)
- create mode 100644 drivers/gpio/gpio-bcm-virt.c
-
---- a/drivers/gpio/Kconfig
-+++ b/drivers/gpio/Kconfig
-@@ -151,6 +151,12 @@ config GPIO_BCM_KONA
- 	help
- 	  Turn on GPIO support for Broadcom "Kona" chips.
- 
-+config GPIO_BCM_VIRT
-+	bool "Broadcom Virt GPIO"
-+	depends on OF_GPIO && RASPBERRYPI_FIRMWARE && (ARCH_BCM2835 || COMPILE_TEST)
-+	help
-+	  Turn on virtual GPIO support for Broadcom BCM283X chips.
-+
- config GPIO_BRCMSTB
- 	tristate "BRCMSTB GPIO support"
- 	default y if (ARCH_BRCMSTB || BMIPS_GENERIC)
---- a/drivers/gpio/Makefile
-+++ b/drivers/gpio/Makefile
-@@ -35,6 +35,7 @@ obj-$(CONFIG_GPIO_ASPEED)	+= gpio-aspeed
- obj-$(CONFIG_GPIO_RASPBERRYPI_EXP)	+= gpio-raspberrypi-exp.o
- obj-$(CONFIG_GPIO_BCM_KONA)	+= gpio-bcm-kona.o
- obj-$(CONFIG_GPIO_BD9571MWV)	+= gpio-bd9571mwv.o
-+obj-$(CONFIG_GPIO_BCM_VIRT)	+= gpio-bcm-virt.o
- obj-$(CONFIG_GPIO_BRCMSTB)	+= gpio-brcmstb.o
- obj-$(CONFIG_GPIO_BT8XX)	+= gpio-bt8xx.o
- obj-$(CONFIG_GPIO_CLPS711X)	+= gpio-clps711x.o
---- /dev/null
-+++ b/drivers/gpio/gpio-bcm-virt.c
-@@ -0,0 +1,214 @@
-+/*
-+ *  brcmvirt GPIO driver
-+ *
-+ *  Copyright (C) 2012,2013 Dom Cobley <popcornmix@gmail.com>
-+ *  Based on gpio-clps711x.c by Alexander Shiyan <shc_work@mail.ru>
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License as published by
-+ * the Free Software Foundation; either version 2 of the License, or
-+ * (at your option) any later version.
-+ */
-+
-+#include <linux/err.h>
-+#include <linux/gpio.h>
-+#include <linux/module.h>
-+#include <linux/platform_device.h>
-+#include <linux/dma-mapping.h>
-+#include <soc/bcm2835/raspberrypi-firmware.h>
-+
-+#define MODULE_NAME "brcmvirt-gpio"
-+#define NUM_GPIO 2
-+
-+struct brcmvirt_gpio {
-+	struct gpio_chip	gc;
-+	u32 __iomem		*ts_base;
-+	/* two packed 16-bit counts of enabled and disables
-+           Allows host to detect a brief enable that was missed */
-+	u32			enables_disables[NUM_GPIO];
-+	dma_addr_t		bus_addr;
-+};
-+
-+static int brcmvirt_gpio_dir_in(struct gpio_chip *gc, unsigned off)
-+{
-+	struct brcmvirt_gpio *gpio;
-+	gpio = container_of(gc, struct brcmvirt_gpio, gc);
-+	return -EINVAL;
-+}
-+
-+static int brcmvirt_gpio_dir_out(struct gpio_chip *gc, unsigned off, int val)
-+{
-+	struct brcmvirt_gpio *gpio;
-+	gpio = container_of(gc, struct brcmvirt_gpio, gc);
-+	return 0;
-+}
-+
-+static int brcmvirt_gpio_get(struct gpio_chip *gc, unsigned off)
-+{
-+	struct brcmvirt_gpio *gpio;
-+	unsigned v;
-+	gpio = container_of(gc, struct brcmvirt_gpio, gc);
-+	v = readl(gpio->ts_base + off);
-+	return (v >> off) & 1;
-+}
-+
-+static void brcmvirt_gpio_set(struct gpio_chip *gc, unsigned off, int val)
-+{
-+	struct brcmvirt_gpio *gpio;
-+	u16 enables, disables;
-+	s16 diff;
-+	bool lit;
-+	gpio = container_of(gc, struct brcmvirt_gpio, gc);
-+	enables  = gpio->enables_disables[off] >> 16;
-+	disables = gpio->enables_disables[off] >>  0;
-+	diff = (s16)(enables - disables);
-+	lit = diff > 0;
-+	if ((val && lit) || (!val && !lit))
-+		return;
-+	if (val)
-+		enables++;
-+	else
-+		disables++;
-+	diff = (s16)(enables - disables);
-+	BUG_ON(diff != 0 && diff != 1);
-+	gpio->enables_disables[off] = (enables << 16) | (disables << 0);
-+	writel(gpio->enables_disables[off], gpio->ts_base + off);
-+}
-+
-+static int brcmvirt_gpio_probe(struct platform_device *pdev)
-+{
-+	int err = 0;
-+	struct device *dev = &pdev->dev;
-+	struct device_node *np = dev->of_node;
-+	struct device_node *fw_node;
-+	struct rpi_firmware *fw;
-+	struct brcmvirt_gpio *ucb;
-+	u32 gpiovirtbuf;
-+
-+	fw_node = of_parse_phandle(np, "firmware", 0);
-+	if (!fw_node) {
-+		dev_err(dev, "Missing firmware node\n");
-+		return -ENOENT;
-+	}
-+
-+	fw = rpi_firmware_get(fw_node);
-+	if (!fw)
-+		return -EPROBE_DEFER;
-+
-+	ucb = devm_kzalloc(dev, sizeof *ucb, GFP_KERNEL);
-+	if (!ucb) {
-+		err = -EINVAL;
-+		goto out;
-+	}
-+
-+	ucb->ts_base = dma_zalloc_coherent(dev, PAGE_SIZE, &ucb->bus_addr, GFP_KERNEL);
-+	if (!ucb->ts_base) {
-+		pr_err("[%s]: failed to dma_alloc_coherent(%ld)\n",
-+				__func__, PAGE_SIZE);
-+		err = -ENOMEM;
-+		goto out;
-+	}
-+
-+	gpiovirtbuf = (u32)ucb->bus_addr;
-+	err = rpi_firmware_property(fw, RPI_FIRMWARE_FRAMEBUFFER_SET_GPIOVIRTBUF,
-+				    &gpiovirtbuf, sizeof(gpiovirtbuf));
-+
-+	if (err || gpiovirtbuf != 0) {
-+		dev_warn(dev, "Failed to set gpiovirtbuf, trying to get err:%x\n", err);
-+		dma_free_coherent(dev, PAGE_SIZE, ucb->ts_base, ucb->bus_addr);
-+		ucb->ts_base = 0;
-+		ucb->bus_addr = 0;
-+	}
-+
-+	if (!ucb->ts_base) {
-+		err = rpi_firmware_property(fw, RPI_FIRMWARE_FRAMEBUFFER_GET_GPIOVIRTBUF,
-+					    &gpiovirtbuf, sizeof(gpiovirtbuf));
-+
-+		if (err) {
-+			dev_err(dev, "Failed to get gpiovirtbuf\n");
-+			goto out;
-+		}
-+
-+		if (!gpiovirtbuf) {
-+			dev_err(dev, "No virtgpio buffer\n");
-+			err = -ENOENT;
-+			goto out;
-+		}
-+
-+		// mmap the physical memory
-+		gpiovirtbuf &= ~0xc0000000;
-+		ucb->ts_base = ioremap(gpiovirtbuf, 4096);
-+		if (ucb->ts_base == NULL) {
-+			dev_err(dev, "Failed to map physical address\n");
-+			err = -ENOENT;
-+			goto out;
-+		}
-+		ucb->bus_addr = 0;
-+	}
-+	ucb->gc.label = MODULE_NAME;
-+	ucb->gc.owner = THIS_MODULE;
-+	//ucb->gc.dev = dev;
-+	ucb->gc.of_node = np;
-+	ucb->gc.base = 100;
-+	ucb->gc.ngpio = NUM_GPIO;
-+
-+	ucb->gc.direction_input = brcmvirt_gpio_dir_in;
-+	ucb->gc.direction_output = brcmvirt_gpio_dir_out;
-+	ucb->gc.get = brcmvirt_gpio_get;
-+	ucb->gc.set = brcmvirt_gpio_set;
-+	ucb->gc.can_sleep = true;
-+
-+	err = gpiochip_add(&ucb->gc);
-+	if (err)
-+		goto out;
-+
-+	platform_set_drvdata(pdev, ucb);
-+
-+	return 0;
-+out:
-+	if (ucb->bus_addr) {
-+		dma_free_coherent(dev, PAGE_SIZE, ucb->ts_base, ucb->bus_addr);
-+		ucb->bus_addr = 0;
-+		ucb->ts_base = NULL;
-+	} else if (ucb->ts_base) {
-+		iounmap(ucb->ts_base);
-+		ucb->ts_base = NULL;
-+	}
-+	return err;
-+}
-+
-+static int brcmvirt_gpio_remove(struct platform_device *pdev)
-+{
-+	struct device *dev = &pdev->dev;
-+	int err = 0;
-+	struct brcmvirt_gpio *ucb = platform_get_drvdata(pdev);
-+
-+	gpiochip_remove(&ucb->gc);
-+	if (ucb->bus_addr)
-+		dma_free_coherent(dev, PAGE_SIZE, ucb->ts_base, ucb->bus_addr);
-+	else if (ucb->ts_base)
-+		iounmap(ucb->ts_base);
-+	return err;
-+}
-+
-+static const struct of_device_id __maybe_unused brcmvirt_gpio_ids[] = {
-+	{ .compatible = "brcm,bcm2835-virtgpio" },
-+	{ }
-+};
-+MODULE_DEVICE_TABLE(of, brcmvirt_gpio_ids);
-+
-+static struct platform_driver brcmvirt_gpio_driver = {
-+	.driver	= {
-+		.name		= MODULE_NAME,
-+		.owner		= THIS_MODULE,
-+		.of_match_table	= of_match_ptr(brcmvirt_gpio_ids),
-+	},
-+	.probe	= brcmvirt_gpio_probe,
-+	.remove	= brcmvirt_gpio_remove,
-+};
-+module_platform_driver(brcmvirt_gpio_driver);
-+
-+MODULE_LICENSE("GPL");
-+MODULE_AUTHOR("Dom Cobley <popcornmix@gmail.com>");
-+MODULE_DESCRIPTION("brcmvirt GPIO driver");
-+MODULE_ALIAS("platform:brcmvirt-gpio");