From d9d090e52082635a24aeaefdc6bfe61ab97f38bb Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= Date: Tue, 7 Feb 2017 22:30:59 +0100 Subject: brcm2708: remove linux 4.4 support MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Álvaro Fernández Rojas --- ...0159-bcm2835-virtgpio-Virtual-GPIO-driver.patch | 244 --------------------- 1 file changed, 244 deletions(-) delete mode 100644 target/linux/brcm2708/patches-4.4/0159-bcm2835-virtgpio-Virtual-GPIO-driver.patch (limited to 'target/linux/brcm2708/patches-4.4/0159-bcm2835-virtgpio-Virtual-GPIO-driver.patch') diff --git a/target/linux/brcm2708/patches-4.4/0159-bcm2835-virtgpio-Virtual-GPIO-driver.patch b/target/linux/brcm2708/patches-4.4/0159-bcm2835-virtgpio-Virtual-GPIO-driver.patch deleted file mode 100644 index fe19fbe051..0000000000 --- a/target/linux/brcm2708/patches-4.4/0159-bcm2835-virtgpio-Virtual-GPIO-driver.patch +++ /dev/null @@ -1,244 +0,0 @@ -From 2fcaab4e60a00ed9b63606b45ae499d7c5561c16 Mon Sep 17 00:00:00 2001 -From: popcornmix -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. ---- - arch/arm/configs/bcm2709_defconfig | 1 + - drivers/gpio/Kconfig | 6 + - drivers/gpio/Makefile | 1 + - drivers/gpio/gpio-bcm-virt.c | 180 +++++++++++++++++++++++++++++ - include/soc/bcm2835/raspberrypi-firmware.h | 1 + - 5 files changed, 189 insertions(+) - create mode 100644 drivers/gpio/gpio-bcm-virt.c - ---- a/arch/arm/configs/bcm2709_defconfig -+++ b/arch/arm/configs/bcm2709_defconfig -@@ -607,6 +607,7 @@ CONFIG_PPS=m - CONFIG_PPS_CLIENT_LDISC=m - CONFIG_PPS_CLIENT_GPIO=m - CONFIG_GPIO_SYSFS=y -+CONFIG_GPIO_BCM_VIRT=y - CONFIG_GPIO_ARIZONA=m - CONFIG_GPIO_STMPE=y - CONFIG_W1=m ---- a/drivers/gpio/Kconfig -+++ b/drivers/gpio/Kconfig -@@ -133,6 +133,12 @@ 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 || ARCH_BCM2708 || ARCH_BCM2709 || COMPILE_TEST) -+ help -+ Turn on virtual GPIO support for Broadcom BCM283X chips. -+ - config GPIO_BRCMSTB - tristate "BRCMSTB GPIO support" - default y if ARCH_BRCMSTB ---- a/drivers/gpio/Makefile -+++ b/drivers/gpio/Makefile -@@ -24,6 +24,7 @@ obj-$(CONFIG_GPIO_AMDPT) += gpio-amdpt.o - obj-$(CONFIG_GPIO_ARIZONA) += gpio-arizona.o - obj-$(CONFIG_ATH79) += gpio-ath79.o - obj-$(CONFIG_GPIO_BCM_KONA) += gpio-bcm-kona.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 +1,180 @@ -+/* -+ * brcmvirt GPIO driver -+ * -+ * Copyright (C) 2012,2013 Dom Cobley -+ * Based on gpio-clps711x.c by Alexander Shiyan -+ * -+ * 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 -+#include -+#include -+#include -+#include -+#include -+ -+#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]; -+}; -+ -+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) -+{ -+ 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; -+ int err = 0; -+ -+ 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; -+ -+ err = rpi_firmware_property(fw, RPI_FIRMWARE_FRAMEBUFFER_GET_GPIOVIRTBUF, -+ &gpiovirtbuf, sizeof(gpiovirtbuf)); -+ -+ if (err) { -+ dev_err(dev, "Failed to get gpiovirtbuf\n"); -+ goto err; -+ } -+ -+ if (!gpiovirtbuf) { -+ dev_err(dev, "No virtgpio buffer\n"); -+ err = -ENOENT; -+ goto err; -+ } -+ -+ ucb = devm_kzalloc(dev, sizeof *ucb, GFP_KERNEL); -+ if (!ucb) { -+ err = -EINVAL; -+ goto err; -+ } -+ -+ // 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 err; -+ } -+ -+ 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 err; -+ -+ platform_set_drvdata(pdev, ucb); -+ -+err: -+ return err; -+ -+} -+ -+static int brcmvirt_gpio_remove(struct platform_device *pdev) -+{ -+ int err = 0; -+ struct brcmvirt_gpio *ucb = platform_get_drvdata(pdev); -+ -+ gpiochip_remove(&ucb->gc); -+ 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 "); -+MODULE_DESCRIPTION("brcmvirt GPIO driver"); -+MODULE_ALIAS("platform:brcmvirt-gpio"); ---- a/include/soc/bcm2835/raspberrypi-firmware.h -+++ b/include/soc/bcm2835/raspberrypi-firmware.h -@@ -93,6 +93,7 @@ enum rpi_firmware_property_tag { - RPI_FIRMWARE_FRAMEBUFFER_GET_OVERSCAN = 0x0004000a, - RPI_FIRMWARE_FRAMEBUFFER_GET_PALETTE = 0x0004000b, - RPI_FIRMWARE_FRAMEBUFFER_GET_TOUCHBUF = 0x0004000f, -+ RPI_FIRMWARE_FRAMEBUFFER_GET_GPIOVIRTBUF = 0x00040010, - RPI_FIRMWARE_FRAMEBUFFER_RELEASE = 0x00048001, - RPI_FIRMWARE_FRAMEBUFFER_TEST_PHYSICAL_WIDTH_HEIGHT = 0x00044003, - RPI_FIRMWARE_FRAMEBUFFER_TEST_VIRTUAL_WIDTH_HEIGHT = 0x00044004, -- cgit v1.2.3