Retire goldfish_rotary.c

Our current Wear images do not have
goldfish_rotary included. When we consider
working on new ones we should use
virtio_input instead.

Bug: 154346346
Test: build
Signed-off-by: Roman Kiryanov <rkir@google.com>
Change-Id: Iee60674fb05a6a999632200954531619fc2541ae

2 files changed, 0 insertions, 206 deletions

diff --git a/Kbuild b/Kbuild
index bb5aef0..45ab612 100644
--- a/Kbuild
+++ b/Kbuild
@@ -4,4 +4,3 @@ obj-m += goldfish_pipe.o
 obj-m += goldfish_sync.o
 obj-m += goldfish_address_space.o
 obj-m += goldfish_battery.o
-obj-m += goldfish_rotary.o
diff --git a/goldfish_rotary.c b/goldfish_rotary.c
deleted file mode 100644
index 91600a0..0000000
--- a/goldfish_rotary.c
+++ /dev/null
@@ -1,205 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/types.h>
-#include <linux/limits.h>
-#include <linux/input.h>
-#include <linux/kernel.h>
-#include <linux/platform_device.h>
-#include <linux/irq.h>
-#include <linux/io.h>
-#include <linux/acpi.h>
-
-#ifndef CHAR_BIT
-#define CHAR_BIT 8
-#endif
-
-enum {
-	REG_READ        = 0x00,
-	REG_SET_PAGE    = 0x00,
-	REG_LEN         = 0x04,
-	REG_DATA        = 0x08,
-
-	PAGE_NAME       = 0x00000,
-	PAGE_EVBITS     = 0x10000,
-	PAGE_ABSDATA    = 0x20000 | EV_ABS,
-
-	IRQ_MAGIC       = 987642334
-};
-
-struct event_dev {
-	int magic;
-	int irq;
-	struct input_dev *input;
-	void __iomem *addr;
-	char name[0];
-};
-
-static irqreturn_t rotary_interrupt_impl(struct event_dev *edev)
-{
-	unsigned int type, code, value;
-
-	type = readl(edev->addr + REG_READ);
-	code = readl(edev->addr + REG_READ);
-	value = readl(edev->addr + REG_READ);
-
-	input_event(edev->input, type, code, value);
-	return IRQ_HANDLED;
-}
-
-static irqreturn_t rotary_interrupt(int irq, void *dev_id)
-{
-	struct event_dev *edev = dev_id;
-
-	if (edev->magic != IRQ_MAGIC)
-		return IRQ_NONE;
-
-	return rotary_interrupt_impl(edev);
-}
-
-static void rotary_import_bits(struct event_dev *edev,
-			       unsigned long bits[],
-			       unsigned int type, size_t count)
-{
-	void __iomem *addr = edev->addr;
-	int i, j;
-	size_t size;
-	uint8_t val;
-
-	writel(PAGE_EVBITS | type, addr + REG_SET_PAGE);
-
-	size = readl(addr + REG_LEN) * CHAR_BIT;
-	if (size < count)
-		count = size;
-
-	addr += REG_DATA;
-	for (i = 0; i < count; i += CHAR_BIT) {
-		val = readb(addr++);
-		for (j = 0; j < CHAR_BIT; j++)
-			if (val & 1 << j)
-				set_bit(i + j, bits);
-	}
-}
-
-static void rotary_import_abs_params(struct event_dev *edev)
-{
-	struct input_dev *input_dev = edev->input;
-	void __iomem *addr = edev->addr;
-	u32 val[4];
-	int count;
-	int i, j;
-
-	writel(PAGE_ABSDATA, addr + REG_SET_PAGE);
-
-	count = readl(addr + REG_LEN) / sizeof(val);
-	if (count > ABS_MAX)
-		count = ABS_MAX;
-
-	for (i = 0; i < count; i++) {
-		if (!test_bit(i, input_dev->absbit))
-			continue;
-
-		for (j = 0; j < ARRAY_SIZE(val); j++) {
-			int offset = (i * ARRAY_SIZE(val) + j) * sizeof(u32);
-			val[j] = readl(edev->addr + REG_DATA + offset);
-		}
-
-		input_set_abs_params(input_dev, i,
-				     val[0], val[1], val[2], val[3]);
-	}
-}
-
-static int rotary_probe(struct platform_device *pdev)
-{
-	struct input_dev *input_dev;
-	struct event_dev *edev;
-	struct resource *res;
-	unsigned int keymapnamelen;
-	void __iomem *addr;
-	int irq;
-	int i;
-	int error;
-
-	irq = platform_get_irq(pdev, 0);
-	if (irq < 0)
-		return -EINVAL;
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res)
-		return -EINVAL;
-
-	addr = devm_ioremap(&pdev->dev, res->start, PAGE_SIZE);
-	if (!addr)
-		return -ENOMEM;
-
-	writel(PAGE_NAME, addr + REG_SET_PAGE);
-	keymapnamelen = readl(addr + REG_LEN);
-
-	edev = devm_kzalloc(&pdev->dev,
-			    sizeof(struct event_dev) + keymapnamelen + 1,
-			    GFP_KERNEL);
-	if (!edev)
-		return -ENOMEM;
-
-	input_dev = devm_input_allocate_device(&pdev->dev);
-	if (!input_dev)
-		return -ENOMEM;
-
-	edev->magic = IRQ_MAGIC;
-	edev->input = input_dev;
-	edev->addr = addr;
-	edev->irq = irq;
-
-	for (i = 0; i < keymapnamelen; i++)
-		edev->name[i] = readb(edev->addr + REG_DATA + i);
-
-	pr_debug("%s: keymap=%s\n", __func__, edev->name);
-
-	input_dev->name = edev->name;
-	input_dev->id.bustype = BUS_HOST;
-	rotary_import_bits(edev, input_dev->evbit, EV_SYN, EV_MAX);
-	rotary_import_bits(edev, input_dev->relbit, EV_REL, REL_MAX);
-	rotary_import_bits(edev, input_dev->absbit, EV_ABS, ABS_MAX);
-
-	rotary_import_abs_params(edev);
-
-	error = devm_request_irq(&pdev->dev, edev->irq, rotary_interrupt,
-				 IRQF_SHARED, "goldfish-rotary", edev);
-	if (error)
-		return error;
-
-	error = input_register_device(input_dev);
-	if (error)
-		return error;
-
-	return 0;
-}
-
-static const struct of_device_id goldfish_rotary_of_match[] = {
-	{ .compatible = "generic,goldfish-rotary", },
-	{},
-};
-MODULE_DEVICE_TABLE(of, goldfish_rotary_of_match);
-
-static const struct acpi_device_id goldfish_rotary_acpi_match[] = {
-	{ "GFSH0008", 0 },
-	{ },
-};
-MODULE_DEVICE_TABLE(acpi, goldfish_rotary_acpi_match);
-
-static struct platform_driver rotary_driver = {
-	.probe	= rotary_probe,
-	.driver	= {
-		.name	= "goldfish_rotary",
-		.of_match_table = goldfish_rotary_of_match,
-		.acpi_match_table = ACPI_PTR(goldfish_rotary_acpi_match),
-	},
-};
-
-module_platform_driver(rotary_driver);
-
-MODULE_AUTHOR("Nimrod Gileadi");
-MODULE_DESCRIPTION("Goldfish Rotary Encoder Device");
-MODULE_LICENSE("GPL v2");