input: remove pxa930_trkball driver
The pxa930 SoC support is getting removed, and no upstream board ever provided the trkball device that this driver relies on. Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: linux-input@vger.kernel.org Acked-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann
Родитель
38943cbd25
Коммит
82d40986a6
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@ -393,12 +393,6 @@ config MOUSE_GPIO
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To compile this driver as a module, choose M here: the
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module will be called gpio_mouse.
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config MOUSE_PXA930_TRKBALL
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tristate "PXA930 Trackball mouse"
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depends on CPU_PXA930 || CPU_PXA935
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help
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Say Y here to support PXA930 Trackball mouse.
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config MOUSE_MAPLE
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tristate "Maple mouse (for the Dreamcast)"
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depends on MAPLE
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@ -18,7 +18,6 @@ obj-$(CONFIG_MOUSE_MAPLE) += maplemouse.o
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obj-$(CONFIG_MOUSE_NAVPOINT_PXA27x) += navpoint.o
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obj-$(CONFIG_MOUSE_PC110PAD) += pc110pad.o
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obj-$(CONFIG_MOUSE_PS2) += psmouse.o
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obj-$(CONFIG_MOUSE_PXA930_TRKBALL) += pxa930_trkball.o
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obj-$(CONFIG_MOUSE_RISCPC) += rpcmouse.o
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obj-$(CONFIG_MOUSE_SERIAL) += sermouse.o
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obj-$(CONFIG_MOUSE_SYNAPTICS_I2C) += synaptics_i2c.o
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@ -1,250 +0,0 @@
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* PXA930 track ball mouse driver
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*
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* Copyright (C) 2007 Marvell International Ltd.
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* 2008-02-28: Yong Yao <yaoyong@marvell.com>
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* initial version
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*/
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#include <linux/input.h>
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#include <linux/interrupt.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/delay.h>
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#include <linux/io.h>
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#include <linux/slab.h>
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#include <linux/platform_data/mouse-pxa930_trkball.h>
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/* Trackball Controller Register Definitions */
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#define TBCR (0x000C)
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#define TBCNTR (0x0010)
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#define TBSBC (0x0014)
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#define TBCR_TBRST (1 << 1)
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#define TBCR_TBSB (1 << 10)
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#define TBCR_Y_FLT(n) (((n) & 0xf) << 6)
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#define TBCR_X_FLT(n) (((n) & 0xf) << 2)
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#define TBCNTR_YM(n) (((n) >> 24) & 0xff)
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#define TBCNTR_YP(n) (((n) >> 16) & 0xff)
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#define TBCNTR_XM(n) (((n) >> 8) & 0xff)
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#define TBCNTR_XP(n) ((n) & 0xff)
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#define TBSBC_TBSBC (0x1)
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struct pxa930_trkball {
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struct pxa930_trkball_platform_data *pdata;
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/* Memory Mapped Register */
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struct resource *mem;
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void __iomem *mmio_base;
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struct input_dev *input;
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};
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static irqreturn_t pxa930_trkball_interrupt(int irq, void *dev_id)
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{
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struct pxa930_trkball *trkball = dev_id;
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struct input_dev *input = trkball->input;
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int tbcntr, x, y;
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/* According to the spec software must read TBCNTR twice:
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* if the read value is the same, the reading is valid
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*/
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tbcntr = __raw_readl(trkball->mmio_base + TBCNTR);
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if (tbcntr == __raw_readl(trkball->mmio_base + TBCNTR)) {
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x = (TBCNTR_XP(tbcntr) - TBCNTR_XM(tbcntr)) / 2;
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y = (TBCNTR_YP(tbcntr) - TBCNTR_YM(tbcntr)) / 2;
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input_report_rel(input, REL_X, x);
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input_report_rel(input, REL_Y, y);
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input_sync(input);
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}
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__raw_writel(TBSBC_TBSBC, trkball->mmio_base + TBSBC);
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__raw_writel(0, trkball->mmio_base + TBSBC);
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return IRQ_HANDLED;
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}
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/* For TBCR, we need to wait for a while to make sure it has been modified. */
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static int write_tbcr(struct pxa930_trkball *trkball, int v)
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{
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int i = 100;
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__raw_writel(v, trkball->mmio_base + TBCR);
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while (--i) {
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if (__raw_readl(trkball->mmio_base + TBCR) == v)
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break;
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msleep(1);
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}
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if (i == 0) {
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pr_err("%s: timed out writing TBCR(%x)!\n", __func__, v);
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return -ETIMEDOUT;
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}
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return 0;
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}
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static void pxa930_trkball_config(struct pxa930_trkball *trkball)
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{
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uint32_t tbcr;
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/* According to spec, need to write the filters of x,y to 0xf first! */
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tbcr = __raw_readl(trkball->mmio_base + TBCR);
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write_tbcr(trkball, tbcr | TBCR_X_FLT(0xf) | TBCR_Y_FLT(0xf));
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write_tbcr(trkball, TBCR_X_FLT(trkball->pdata->x_filter) |
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TBCR_Y_FLT(trkball->pdata->y_filter));
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/* According to spec, set TBCR_TBRST first, before clearing it! */
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tbcr = __raw_readl(trkball->mmio_base + TBCR);
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write_tbcr(trkball, tbcr | TBCR_TBRST);
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write_tbcr(trkball, tbcr & ~TBCR_TBRST);
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__raw_writel(TBSBC_TBSBC, trkball->mmio_base + TBSBC);
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__raw_writel(0, trkball->mmio_base + TBSBC);
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pr_debug("%s: final TBCR=%x!\n", __func__,
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__raw_readl(trkball->mmio_base + TBCR));
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}
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static int pxa930_trkball_open(struct input_dev *dev)
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{
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struct pxa930_trkball *trkball = input_get_drvdata(dev);
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pxa930_trkball_config(trkball);
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return 0;
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}
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static void pxa930_trkball_disable(struct pxa930_trkball *trkball)
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{
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uint32_t tbcr = __raw_readl(trkball->mmio_base + TBCR);
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/* Held in reset, gate the 32-KHz input clock off */
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write_tbcr(trkball, tbcr | TBCR_TBRST);
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}
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static void pxa930_trkball_close(struct input_dev *dev)
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{
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struct pxa930_trkball *trkball = input_get_drvdata(dev);
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pxa930_trkball_disable(trkball);
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}
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static int pxa930_trkball_probe(struct platform_device *pdev)
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{
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struct pxa930_trkball *trkball;
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struct input_dev *input;
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struct resource *res;
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int irq, error;
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irq = platform_get_irq(pdev, 0);
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if (irq < 0)
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return -ENXIO;
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (!res) {
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dev_err(&pdev->dev, "failed to get register memory\n");
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return -ENXIO;
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}
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trkball = kzalloc(sizeof(struct pxa930_trkball), GFP_KERNEL);
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if (!trkball)
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return -ENOMEM;
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trkball->pdata = dev_get_platdata(&pdev->dev);
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if (!trkball->pdata) {
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dev_err(&pdev->dev, "no platform data defined\n");
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error = -EINVAL;
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goto failed;
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}
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trkball->mmio_base = ioremap(res->start, resource_size(res));
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if (!trkball->mmio_base) {
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dev_err(&pdev->dev, "failed to ioremap registers\n");
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error = -ENXIO;
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goto failed;
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}
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/* held the module in reset, will be enabled in open() */
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pxa930_trkball_disable(trkball);
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error = request_irq(irq, pxa930_trkball_interrupt, 0,
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pdev->name, trkball);
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if (error) {
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dev_err(&pdev->dev, "failed to request irq: %d\n", error);
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goto failed_free_io;
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}
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platform_set_drvdata(pdev, trkball);
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input = input_allocate_device();
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if (!input) {
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dev_err(&pdev->dev, "failed to allocate input device\n");
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error = -ENOMEM;
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goto failed_free_irq;
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}
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input->name = pdev->name;
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input->id.bustype = BUS_HOST;
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input->open = pxa930_trkball_open;
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input->close = pxa930_trkball_close;
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input->dev.parent = &pdev->dev;
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input_set_drvdata(input, trkball);
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trkball->input = input;
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input_set_capability(input, EV_REL, REL_X);
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input_set_capability(input, EV_REL, REL_Y);
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error = input_register_device(input);
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if (error) {
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dev_err(&pdev->dev, "unable to register input device\n");
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goto failed_free_input;
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}
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return 0;
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failed_free_input:
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input_free_device(input);
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failed_free_irq:
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free_irq(irq, trkball);
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failed_free_io:
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iounmap(trkball->mmio_base);
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failed:
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kfree(trkball);
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return error;
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}
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static int pxa930_trkball_remove(struct platform_device *pdev)
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{
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struct pxa930_trkball *trkball = platform_get_drvdata(pdev);
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int irq = platform_get_irq(pdev, 0);
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input_unregister_device(trkball->input);
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free_irq(irq, trkball);
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iounmap(trkball->mmio_base);
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kfree(trkball);
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return 0;
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}
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static struct platform_driver pxa930_trkball_driver = {
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.driver = {
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.name = "pxa930-trkball",
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},
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.probe = pxa930_trkball_probe,
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.remove = pxa930_trkball_remove,
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};
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module_platform_driver(pxa930_trkball_driver);
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MODULE_AUTHOR("Yong Yao <yaoyong@marvell.com>");
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MODULE_DESCRIPTION("PXA930 Trackball Mouse Driver");
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MODULE_LICENSE("GPL");
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@ -1,11 +0,0 @@
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_ARCH_PXA930_TRKBALL_H
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#define __ASM_ARCH_PXA930_TRKBALL_H
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struct pxa930_trkball_platform_data {
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int x_filter;
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int y_filter;
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};
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#endif /* __ASM_ARCH_PXA930_TRKBALL_H */
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