forked from mirrors/linux
input: remove davinci keyboard driver
The dm365evm board was removed, and no other users of this device exist. Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com> Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann
parent
f47f51f466
commit
3c9cb34939
3 changed files with 0 additions and 326 deletions
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@ -657,16 +657,6 @@ config KEYBOARD_SUN4I_LRADC
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To compile this driver as a module, choose M here: the
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To compile this driver as a module, choose M here: the
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module will be called sun4i-lradc-keys.
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module will be called sun4i-lradc-keys.
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config KEYBOARD_DAVINCI
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tristate "TI DaVinci Key Scan"
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depends on ARCH_DAVINCI_DM365
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help
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Say Y to enable keypad module support for the TI DaVinci
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platforms (DM365).
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To compile this driver as a module, choose M here: the
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module will be called davinci_keyscan.
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config KEYBOARD_IPAQ_MICRO
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config KEYBOARD_IPAQ_MICRO
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tristate "Buttons on Micro SoC (iPaq h3100,h3600,h3700)"
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tristate "Buttons on Micro SoC (iPaq h3100,h3600,h3700)"
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depends on MFD_IPAQ_MICRO
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depends on MFD_IPAQ_MICRO
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@ -18,7 +18,6 @@ obj-$(CONFIG_KEYBOARD_CAP11XX) += cap11xx.o
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obj-$(CONFIG_KEYBOARD_CLPS711X) += clps711x-keypad.o
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obj-$(CONFIG_KEYBOARD_CLPS711X) += clps711x-keypad.o
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obj-$(CONFIG_KEYBOARD_CROS_EC) += cros_ec_keyb.o
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obj-$(CONFIG_KEYBOARD_CROS_EC) += cros_ec_keyb.o
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obj-$(CONFIG_KEYBOARD_CYPRESS_SF) += cypress-sf.o
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obj-$(CONFIG_KEYBOARD_CYPRESS_SF) += cypress-sf.o
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obj-$(CONFIG_KEYBOARD_DAVINCI) += davinci_keyscan.o
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obj-$(CONFIG_KEYBOARD_DLINK_DIR685) += dlink-dir685-touchkeys.o
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obj-$(CONFIG_KEYBOARD_DLINK_DIR685) += dlink-dir685-touchkeys.o
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obj-$(CONFIG_KEYBOARD_EP93XX) += ep93xx_keypad.o
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obj-$(CONFIG_KEYBOARD_EP93XX) += ep93xx_keypad.o
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obj-$(CONFIG_KEYBOARD_GOLDFISH_EVENTS) += goldfish_events.o
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obj-$(CONFIG_KEYBOARD_GOLDFISH_EVENTS) += goldfish_events.o
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@ -1,315 +0,0 @@
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* DaVinci Key Scan Driver for TI platforms
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*
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* Copyright (C) 2009 Texas Instruments, Inc
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*
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* Author: Miguel Aguilar <miguel.aguilar@ridgerun.com>
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*
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* Initial Code: Sandeep Paulraj <s-paulraj@ti.com>
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/types.h>
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#include <linux/input.h>
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#include <linux/kernel.h>
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#include <linux/delay.h>
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#include <linux/platform_device.h>
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#include <linux/errno.h>
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#include <linux/slab.h>
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#include <linux/platform_data/keyscan-davinci.h>
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/* Key scan registers */
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#define DAVINCI_KEYSCAN_KEYCTRL 0x0000
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#define DAVINCI_KEYSCAN_INTENA 0x0004
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#define DAVINCI_KEYSCAN_INTFLAG 0x0008
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#define DAVINCI_KEYSCAN_INTCLR 0x000c
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#define DAVINCI_KEYSCAN_STRBWIDTH 0x0010
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#define DAVINCI_KEYSCAN_INTERVAL 0x0014
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#define DAVINCI_KEYSCAN_CONTTIME 0x0018
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#define DAVINCI_KEYSCAN_CURRENTST 0x001c
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#define DAVINCI_KEYSCAN_PREVSTATE 0x0020
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#define DAVINCI_KEYSCAN_EMUCTRL 0x0024
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#define DAVINCI_KEYSCAN_IODFTCTRL 0x002c
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/* Key Control Register (KEYCTRL) */
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#define DAVINCI_KEYSCAN_KEYEN 0x00000001
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#define DAVINCI_KEYSCAN_PREVMODE 0x00000002
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#define DAVINCI_KEYSCAN_CHATOFF 0x00000004
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#define DAVINCI_KEYSCAN_AUTODET 0x00000008
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#define DAVINCI_KEYSCAN_SCANMODE 0x00000010
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#define DAVINCI_KEYSCAN_OUTTYPE 0x00000020
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/* Masks for the interrupts */
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#define DAVINCI_KEYSCAN_INT_CONT 0x00000008
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#define DAVINCI_KEYSCAN_INT_OFF 0x00000004
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#define DAVINCI_KEYSCAN_INT_ON 0x00000002
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#define DAVINCI_KEYSCAN_INT_CHANGE 0x00000001
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#define DAVINCI_KEYSCAN_INT_ALL 0x0000000f
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struct davinci_ks {
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struct input_dev *input;
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struct davinci_ks_platform_data *pdata;
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int irq;
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void __iomem *base;
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resource_size_t pbase;
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size_t base_size;
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unsigned short keymap[];
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};
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/* Initializing the kp Module */
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static int __init davinci_ks_initialize(struct davinci_ks *davinci_ks)
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{
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struct device *dev = &davinci_ks->input->dev;
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struct davinci_ks_platform_data *pdata = davinci_ks->pdata;
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u32 matrix_ctrl;
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/* Enable all interrupts */
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__raw_writel(DAVINCI_KEYSCAN_INT_ALL,
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davinci_ks->base + DAVINCI_KEYSCAN_INTENA);
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/* Clear interrupts if any */
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__raw_writel(DAVINCI_KEYSCAN_INT_ALL,
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davinci_ks->base + DAVINCI_KEYSCAN_INTCLR);
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/* Setup the scan period = strobe + interval */
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__raw_writel(pdata->strobe,
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davinci_ks->base + DAVINCI_KEYSCAN_STRBWIDTH);
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__raw_writel(pdata->interval,
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davinci_ks->base + DAVINCI_KEYSCAN_INTERVAL);
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__raw_writel(0x01,
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davinci_ks->base + DAVINCI_KEYSCAN_CONTTIME);
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/* Define matrix type */
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switch (pdata->matrix_type) {
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case DAVINCI_KEYSCAN_MATRIX_4X4:
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matrix_ctrl = 0;
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break;
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case DAVINCI_KEYSCAN_MATRIX_5X3:
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matrix_ctrl = (1 << 6);
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break;
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default:
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dev_err(dev->parent, "wrong matrix type\n");
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return -EINVAL;
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}
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/* Enable key scan module and set matrix type */
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__raw_writel(DAVINCI_KEYSCAN_AUTODET | DAVINCI_KEYSCAN_KEYEN |
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matrix_ctrl, davinci_ks->base + DAVINCI_KEYSCAN_KEYCTRL);
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return 0;
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}
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static irqreturn_t davinci_ks_interrupt(int irq, void *dev_id)
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{
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struct davinci_ks *davinci_ks = dev_id;
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struct device *dev = &davinci_ks->input->dev;
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unsigned short *keymap = davinci_ks->keymap;
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int keymapsize = davinci_ks->pdata->keymapsize;
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u32 prev_status, new_status, changed;
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bool release;
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int keycode = KEY_UNKNOWN;
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int i;
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/* Disable interrupt */
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__raw_writel(0x0, davinci_ks->base + DAVINCI_KEYSCAN_INTENA);
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/* Reading previous and new status of the key scan */
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prev_status = __raw_readl(davinci_ks->base + DAVINCI_KEYSCAN_PREVSTATE);
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new_status = __raw_readl(davinci_ks->base + DAVINCI_KEYSCAN_CURRENTST);
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changed = prev_status ^ new_status;
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if (changed) {
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/*
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* It goes through all bits in 'changed' to ensure
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* that no key changes are being missed
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*/
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for (i = 0 ; i < keymapsize; i++) {
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if ((changed>>i) & 0x1) {
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keycode = keymap[i];
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release = (new_status >> i) & 0x1;
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dev_dbg(dev->parent, "key %d %s\n", keycode,
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release ? "released" : "pressed");
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input_report_key(davinci_ks->input, keycode,
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!release);
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input_sync(davinci_ks->input);
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}
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}
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/* Clearing interrupt */
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__raw_writel(DAVINCI_KEYSCAN_INT_ALL,
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davinci_ks->base + DAVINCI_KEYSCAN_INTCLR);
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}
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/* Enable interrupts */
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__raw_writel(0x1, davinci_ks->base + DAVINCI_KEYSCAN_INTENA);
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return IRQ_HANDLED;
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}
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static int __init davinci_ks_probe(struct platform_device *pdev)
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{
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struct davinci_ks *davinci_ks;
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struct input_dev *key_dev;
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struct resource *res, *mem;
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struct device *dev = &pdev->dev;
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struct davinci_ks_platform_data *pdata = dev_get_platdata(dev);
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int error, i;
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if (pdata->device_enable) {
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error = pdata->device_enable(dev);
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if (error < 0) {
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dev_dbg(dev, "device enable function failed\n");
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return error;
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}
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}
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if (!pdata->keymap) {
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dev_dbg(dev, "no keymap from pdata\n");
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return -EINVAL;
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}
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davinci_ks = kzalloc(sizeof(struct davinci_ks) +
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sizeof(unsigned short) * pdata->keymapsize, GFP_KERNEL);
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if (!davinci_ks) {
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dev_dbg(dev, "could not allocate memory for private data\n");
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return -ENOMEM;
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}
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memcpy(davinci_ks->keymap, pdata->keymap,
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sizeof(unsigned short) * pdata->keymapsize);
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key_dev = input_allocate_device();
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if (!key_dev) {
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dev_dbg(dev, "could not allocate input device\n");
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error = -ENOMEM;
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goto fail1;
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}
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davinci_ks->input = key_dev;
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davinci_ks->irq = platform_get_irq(pdev, 0);
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if (davinci_ks->irq < 0) {
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error = davinci_ks->irq;
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goto fail2;
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}
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (!res) {
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dev_err(dev, "no mem resource\n");
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error = -EINVAL;
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goto fail2;
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}
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davinci_ks->pbase = res->start;
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davinci_ks->base_size = resource_size(res);
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mem = request_mem_region(davinci_ks->pbase, davinci_ks->base_size,
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pdev->name);
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if (!mem) {
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dev_err(dev, "key scan registers at %08x are not free\n",
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davinci_ks->pbase);
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error = -EBUSY;
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goto fail2;
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}
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davinci_ks->base = ioremap(davinci_ks->pbase, davinci_ks->base_size);
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if (!davinci_ks->base) {
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dev_err(dev, "can't ioremap MEM resource.\n");
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error = -ENOMEM;
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goto fail3;
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}
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/* Enable auto repeat feature of Linux input subsystem */
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if (pdata->rep)
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__set_bit(EV_REP, key_dev->evbit);
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/* Setup input device */
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__set_bit(EV_KEY, key_dev->evbit);
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/* Setup the platform data */
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davinci_ks->pdata = pdata;
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for (i = 0; i < davinci_ks->pdata->keymapsize; i++)
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__set_bit(davinci_ks->pdata->keymap[i], key_dev->keybit);
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key_dev->name = "davinci_keyscan";
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key_dev->phys = "davinci_keyscan/input0";
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key_dev->dev.parent = dev;
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key_dev->id.bustype = BUS_HOST;
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key_dev->id.vendor = 0x0001;
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key_dev->id.product = 0x0001;
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key_dev->id.version = 0x0001;
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key_dev->keycode = davinci_ks->keymap;
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key_dev->keycodesize = sizeof(davinci_ks->keymap[0]);
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key_dev->keycodemax = davinci_ks->pdata->keymapsize;
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error = input_register_device(davinci_ks->input);
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if (error < 0) {
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dev_err(dev, "unable to register davinci key scan device\n");
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goto fail4;
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}
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error = request_irq(davinci_ks->irq, davinci_ks_interrupt,
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0, pdev->name, davinci_ks);
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if (error < 0) {
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dev_err(dev, "unable to register davinci key scan interrupt\n");
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goto fail5;
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}
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error = davinci_ks_initialize(davinci_ks);
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if (error < 0) {
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dev_err(dev, "unable to initialize davinci key scan device\n");
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goto fail6;
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}
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platform_set_drvdata(pdev, davinci_ks);
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return 0;
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fail6:
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free_irq(davinci_ks->irq, davinci_ks);
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fail5:
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input_unregister_device(davinci_ks->input);
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key_dev = NULL;
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fail4:
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iounmap(davinci_ks->base);
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fail3:
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release_mem_region(davinci_ks->pbase, davinci_ks->base_size);
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fail2:
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input_free_device(key_dev);
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fail1:
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kfree(davinci_ks);
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return error;
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}
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static int davinci_ks_remove(struct platform_device *pdev)
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{
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struct davinci_ks *davinci_ks = platform_get_drvdata(pdev);
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free_irq(davinci_ks->irq, davinci_ks);
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input_unregister_device(davinci_ks->input);
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iounmap(davinci_ks->base);
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release_mem_region(davinci_ks->pbase, davinci_ks->base_size);
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kfree(davinci_ks);
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return 0;
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}
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static struct platform_driver davinci_ks_driver = {
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.driver = {
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.name = "davinci_keyscan",
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},
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.remove = davinci_ks_remove,
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};
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module_platform_driver_probe(davinci_ks_driver, davinci_ks_probe);
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MODULE_AUTHOR("Miguel Aguilar");
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MODULE_DESCRIPTION("Texas Instruments DaVinci Key Scan Driver");
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MODULE_LICENSE("GPL");
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