From fce21ae4ccfcee0c28fb18f5507e145fb0b02dec Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Wed, 22 Mar 2017 21:09:00 +0100 Subject: brcm2708: rename all patches from raspberrypi git tree to use 950 prefix MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Acked-by: Florian Fainelli Acked-by: Stijn Tintel --- ...Add-touchscreen-driver-for-pi-LCD-display.patch | 351 +++++++++++++++++++++ 1 file changed, 351 insertions(+) create mode 100644 target/linux/brcm2708/patches-4.9/950-0062-rpi-ft5406-Add-touchscreen-driver-for-pi-LCD-display.patch (limited to 'target/linux/brcm2708/patches-4.9/950-0062-rpi-ft5406-Add-touchscreen-driver-for-pi-LCD-display.patch') diff --git a/target/linux/brcm2708/patches-4.9/950-0062-rpi-ft5406-Add-touchscreen-driver-for-pi-LCD-display.patch b/target/linux/brcm2708/patches-4.9/950-0062-rpi-ft5406-Add-touchscreen-driver-for-pi-LCD-display.patch new file mode 100644 index 0000000000..43ed3faa9c --- /dev/null +++ b/target/linux/brcm2708/patches-4.9/950-0062-rpi-ft5406-Add-touchscreen-driver-for-pi-LCD-display.patch @@ -0,0 +1,351 @@ +From 18c740925ca44b8a2f55ac201acf935f9fa97515 Mon Sep 17 00:00:00 2001 +From: Gordon Hollingworth +Date: Tue, 12 May 2015 14:47:56 +0100 +Subject: [PATCH] rpi-ft5406: Add touchscreen driver for pi LCD display + +Fix driver detection failure Check that the buffer response is non-zero meaning the touchscreen was detected + +rpi-ft5406: Use firmware API + +RPI-FT5406: Enable aarch64 support through explicit iomem interface + +Signed-off-by: Gerhard de Clercq +--- + drivers/input/touchscreen/Kconfig | 7 + + drivers/input/touchscreen/Makefile | 1 + + drivers/input/touchscreen/rpi-ft5406.c | 292 +++++++++++++++++++++++++++++ + include/soc/bcm2835/raspberrypi-firmware.h | 1 + + 4 files changed, 301 insertions(+) + create mode 100644 drivers/input/touchscreen/rpi-ft5406.c + +--- a/drivers/input/touchscreen/Kconfig ++++ b/drivers/input/touchscreen/Kconfig +@@ -638,6 +638,13 @@ config TOUCHSCREEN_EDT_FT5X06 + To compile this driver as a module, choose M here: the + module will be called edt-ft5x06. + ++config TOUCHSCREEN_RPI_FT5406 ++ tristate "Raspberry Pi FT5406 driver" ++ depends on RASPBERRYPI_FIRMWARE ++ help ++ Say Y here to enable the Raspberry Pi memory based FT5406 device ++ ++ + config TOUCHSCREEN_MIGOR + tristate "Renesas MIGO-R touchscreen" + depends on (SH_MIGOR || COMPILE_TEST) && I2C +--- a/drivers/input/touchscreen/Makefile ++++ b/drivers/input/touchscreen/Makefile +@@ -29,6 +29,7 @@ obj-$(CONFIG_TOUCHSCREEN_DA9034) += da90 + obj-$(CONFIG_TOUCHSCREEN_DA9052) += da9052_tsi.o + obj-$(CONFIG_TOUCHSCREEN_DYNAPRO) += dynapro.o + obj-$(CONFIG_TOUCHSCREEN_EDT_FT5X06) += edt-ft5x06.o ++obj-$(CONFIG_TOUCHSCREEN_RPI_FT5406) += rpi-ft5406.o + obj-$(CONFIG_TOUCHSCREEN_HAMPSHIRE) += hampshire.o + obj-$(CONFIG_TOUCHSCREEN_GUNZE) += gunze.o + obj-$(CONFIG_TOUCHSCREEN_EETI) += eeti_ts.o +--- /dev/null ++++ b/drivers/input/touchscreen/rpi-ft5406.c +@@ -0,0 +1,292 @@ ++/* ++ * Driver for memory based ft5406 touchscreen ++ * ++ * Copyright (C) 2015 Raspberry Pi ++ * ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++ ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++ ++#define MAXIMUM_SUPPORTED_POINTS 10 ++struct ft5406_regs { ++ uint8_t device_mode; ++ uint8_t gesture_id; ++ uint8_t num_points; ++ struct ft5406_touch { ++ uint8_t xh; ++ uint8_t xl; ++ uint8_t yh; ++ uint8_t yl; ++ uint8_t res1; ++ uint8_t res2; ++ } point[MAXIMUM_SUPPORTED_POINTS]; ++}; ++ ++#define SCREEN_WIDTH 800 ++#define SCREEN_HEIGHT 480 ++ ++struct ft5406 { ++ struct platform_device * pdev; ++ struct input_dev * input_dev; ++ void __iomem * ts_base; ++ dma_addr_t bus_addr; ++ struct task_struct * thread; ++}; ++ ++/* Thread to poll for touchscreen events ++ * ++ * This thread polls the memory based register copy of the ft5406 registers ++ * using the number of points register to know whether the copy has been ++ * updated (we write 99 to the memory copy, the GPU will write between ++ * 0 - 10 points) ++ */ ++static int ft5406_thread(void *arg) ++{ ++ struct ft5406 *ts = (struct ft5406 *) arg; ++ struct ft5406_regs regs; ++ int known_ids = 0; ++ ++ while(!kthread_should_stop()) ++ { ++ // 60fps polling ++ msleep_interruptible(17); ++ memcpy_fromio(®s, ts->ts_base, sizeof(struct ft5406_regs)); ++ iowrite8(99, ts->ts_base + offsetof(struct ft5406_regs, num_points)); ++ // Do not output if theres no new information (num_points is 99) ++ // or we have no touch points and don't need to release any ++ if(!(regs.num_points == 99 || (regs.num_points == 0 && known_ids == 0))) ++ { ++ int i; ++ int modified_ids = 0, released_ids; ++ for(i = 0; i < regs.num_points; i++) ++ { ++ int x = (((int) regs.point[i].xh & 0xf) << 8) + regs.point[i].xl; ++ int y = (((int) regs.point[i].yh & 0xf) << 8) + regs.point[i].yl; ++ int touchid = (regs.point[i].yh >> 4) & 0xf; ++ ++ modified_ids |= 1 << touchid; ++ ++ if(!((1 << touchid) & known_ids)) ++ dev_dbg(&ts->pdev->dev, "x = %d, y = %d, touchid = %d\n", x, y, touchid); ++ ++ input_mt_slot(ts->input_dev, touchid); ++ input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, 1); ++ ++ input_report_abs(ts->input_dev, ABS_MT_POSITION_X, x); ++ input_report_abs(ts->input_dev, ABS_MT_POSITION_Y, y); ++ ++ } ++ ++ released_ids = known_ids & ~modified_ids; ++ for(i = 0; released_ids && i < MAXIMUM_SUPPORTED_POINTS; i++) ++ { ++ if(released_ids & (1<pdev->dev, "Released %d, known = %x modified = %x\n", i, known_ids, modified_ids); ++ input_mt_slot(ts->input_dev, i); ++ input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, 0); ++ modified_ids &= ~(1 << i); ++ } ++ } ++ known_ids = modified_ids; ++ ++ input_mt_report_pointer_emulation(ts->input_dev, true); ++ input_sync(ts->input_dev); ++ } ++ ++ } ++ ++ return 0; ++} ++ ++static int ft5406_probe(struct platform_device *pdev) ++{ ++ int err = 0; ++ struct device *dev = &pdev->dev; ++ struct device_node *np = dev->of_node; ++ struct ft5406 * ts; ++ struct device_node *fw_node; ++ struct rpi_firmware *fw; ++ u32 touchbuf; ++ ++ dev_info(dev, "Probing device\n"); ++ ++ 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; ++ ++ ts = devm_kzalloc(dev, sizeof(struct ft5406), GFP_KERNEL); ++ if (!ts) { ++ dev_err(dev, "Failed to allocate memory\n"); ++ return -ENOMEM; ++ } ++ ++ ts->input_dev = input_allocate_device(); ++ if (!ts->input_dev) { ++ dev_err(dev, "Failed to allocate input device\n"); ++ return -ENOMEM; ++ } ++ ++ ts->ts_base = dma_zalloc_coherent(dev, PAGE_SIZE, &ts->bus_addr, GFP_KERNEL); ++ if (!ts->ts_base) { ++ pr_err("[%s]: failed to dma_alloc_coherent(%ld)\n", ++ __func__, PAGE_SIZE); ++ err = -ENOMEM; ++ goto out; ++ } ++ ++ touchbuf = (u32)ts->bus_addr; ++ err = rpi_firmware_property(fw, RPI_FIRMWARE_FRAMEBUFFER_SET_TOUCHBUF, ++ &touchbuf, sizeof(touchbuf)); ++ ++ if (err || touchbuf != 0) { ++ dev_warn(dev, "Failed to set touchbuf, trying to get err:%x\n", err); ++ dma_free_coherent(dev, PAGE_SIZE, ts->ts_base, ts->bus_addr); ++ ts->ts_base = 0; ++ ts->bus_addr = 0; ++ } ++ ++ if (!ts->ts_base) { ++ dev_warn(dev, "set failed, trying get (err:%d touchbuf:%x virt:%p bus:%x)\n", err, touchbuf, ts->ts_base, ts->bus_addr); ++ ++ err = rpi_firmware_property(fw, RPI_FIRMWARE_FRAMEBUFFER_GET_TOUCHBUF, ++ &touchbuf, sizeof(touchbuf)); ++ if (err) { ++ dev_err(dev, "Failed to get touch buffer\n"); ++ goto out; ++ } ++ ++ if (!touchbuf) { ++ dev_err(dev, "Touchscreen not detected\n"); ++ err = -ENODEV; ++ goto out; ++ } ++ ++ dev_dbg(dev, "Got TS buffer 0x%x\n", touchbuf); ++ ++ // mmap the physical memory ++ touchbuf &= ~0xc0000000; ++ ts->ts_base = ioremap(touchbuf, sizeof(struct ft5406_regs)); ++ if (ts->ts_base == NULL) ++ { ++ dev_err(dev, "Failed to map physical address\n"); ++ err = -ENOMEM; ++ goto out; ++ } ++ } ++ platform_set_drvdata(pdev, ts); ++ ts->pdev = pdev; ++ ++ ts->input_dev->name = "FT5406 memory based driver"; ++ ++ __set_bit(EV_KEY, ts->input_dev->evbit); ++ __set_bit(EV_SYN, ts->input_dev->evbit); ++ __set_bit(EV_ABS, ts->input_dev->evbit); ++ ++ input_set_abs_params(ts->input_dev, ABS_MT_POSITION_X, 0, ++ SCREEN_WIDTH, 0, 0); ++ input_set_abs_params(ts->input_dev, ABS_MT_POSITION_Y, 0, ++ SCREEN_HEIGHT, 0, 0); ++ ++ input_mt_init_slots(ts->input_dev, MAXIMUM_SUPPORTED_POINTS, INPUT_MT_DIRECT); ++ ++ input_set_drvdata(ts->input_dev, ts); ++ ++ err = input_register_device(ts->input_dev); ++ if (err) { ++ dev_err(dev, "could not register input device, %d\n", ++ err); ++ goto out; ++ } ++ ++ // create thread to poll the touch events ++ ts->thread = kthread_run(ft5406_thread, ts, "ft5406"); ++ if(ts->thread == NULL) ++ { ++ dev_err(dev, "Failed to create kernel thread"); ++ err = -ENOMEM; ++ goto out; ++ } ++ ++ return 0; ++ ++out: ++ if (ts->bus_addr) { ++ dma_free_coherent(dev, PAGE_SIZE, ts->ts_base, ts->bus_addr); ++ ts->bus_addr = 0; ++ ts->ts_base = NULL; ++ } else if (ts->ts_base) { ++ iounmap(ts->ts_base); ++ ts->ts_base = NULL; ++ } ++ if (ts->input_dev) { ++ input_unregister_device(ts->input_dev); ++ ts->input_dev = NULL; ++ } ++ return err; ++} ++ ++static int ft5406_remove(struct platform_device *pdev) ++{ ++ struct device *dev = &pdev->dev; ++ struct ft5406 *ts = (struct ft5406 *) platform_get_drvdata(pdev); ++ ++ dev_info(dev, "Removing rpi-ft5406\n"); ++ ++ kthread_stop(ts->thread); ++ ++ if (ts->bus_addr) ++ dma_free_coherent(dev, PAGE_SIZE, ts->ts_base, ts->bus_addr); ++ else if (ts->ts_base) ++ iounmap(ts->ts_base); ++ if (ts->input_dev) ++ input_unregister_device(ts->input_dev); ++ ++ return 0; ++} ++ ++static const struct of_device_id ft5406_match[] = { ++ { .compatible = "rpi,rpi-ft5406", }, ++ {}, ++}; ++MODULE_DEVICE_TABLE(of, ft5406_match); ++ ++static struct platform_driver ft5406_driver = { ++ .driver = { ++ .name = "rpi-ft5406", ++ .owner = THIS_MODULE, ++ .of_match_table = ft5406_match, ++ }, ++ .probe = ft5406_probe, ++ .remove = ft5406_remove, ++}; ++ ++module_platform_driver(ft5406_driver); ++ ++MODULE_AUTHOR("Gordon Hollingworth"); ++MODULE_DESCRIPTION("Touchscreen driver for memory based FT5406"); ++MODULE_LICENSE("GPL"); +--- a/include/soc/bcm2835/raspberrypi-firmware.h ++++ b/include/soc/bcm2835/raspberrypi-firmware.h +@@ -115,6 +115,7 @@ enum rpi_firmware_property_tag { + RPI_FIRMWARE_FRAMEBUFFER_SET_VIRTUAL_OFFSET = 0x00048009, + RPI_FIRMWARE_FRAMEBUFFER_SET_OVERSCAN = 0x0004800a, + RPI_FIRMWARE_FRAMEBUFFER_SET_PALETTE = 0x0004800b, ++ RPI_FIRMWARE_FRAMEBUFFER_SET_TOUCHBUF = 0x0004801f, + RPI_FIRMWARE_FRAMEBUFFER_SET_VSYNC = 0x0004800e, + RPI_FIRMWARE_FRAMEBUFFER_SET_BACKLIGHT = 0x0004800f, + -- cgit v1.2.3