diff options
-rw-r--r-- | drivers/input/touchscreen/Kconfig | 9 | ||||
-rw-r--r-- | drivers/input/touchscreen/Makefile | 1 | ||||
-rw-r--r-- | drivers/input/touchscreen/w90p910_ts.c | 331 |
3 files changed, 0 insertions, 341 deletions
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index fb91f2d4049e..46ad9090493b 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -1112,15 +1112,6 @@ config TOUCHSCREEN_TSC2007_IIO or ambient light monitoring), temperature and raw input values. -config TOUCHSCREEN_W90X900 - tristate "W90P910 touchscreen driver" - depends on ARCH_W90X900 - help - Say Y here if you have a W90P910 based touchscreen. - - To compile this driver as a module, choose M here: the - module will be called w90p910_ts. - config TOUCHSCREEN_PCAP tristate "Motorola PCAP touchscreen" depends on EZX_PCAP diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index 084a596a0c8b..94c6162409b3 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile @@ -102,7 +102,6 @@ wm97xx-ts-$(CONFIG_TOUCHSCREEN_WM9712) += wm9712.o wm97xx-ts-$(CONFIG_TOUCHSCREEN_WM9713) += wm9713.o obj-$(CONFIG_TOUCHSCREEN_WM97XX_MAINSTONE) += mainstone-wm97xx.o obj-$(CONFIG_TOUCHSCREEN_WM97XX_ZYLONITE) += zylonite-wm97xx.o -obj-$(CONFIG_TOUCHSCREEN_W90X900) += w90p910_ts.o obj-$(CONFIG_TOUCHSCREEN_SX8654) += sx8654.o obj-$(CONFIG_TOUCHSCREEN_TPS6507X) += tps6507x-ts.o obj-$(CONFIG_TOUCHSCREEN_ZET6223) += zet6223.o diff --git a/drivers/input/touchscreen/w90p910_ts.c b/drivers/input/touchscreen/w90p910_ts.c deleted file mode 100644 index 7893d7fa398c..000000000000 --- a/drivers/input/touchscreen/w90p910_ts.c +++ /dev/null @@ -1,331 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (c) 2008 Nuvoton technology corporation. - * - * Wan ZongShun <mcuos.com@gmail.com> - */ - -#include <linux/delay.h> -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/io.h> -#include <linux/clk.h> -#include <linux/input.h> -#include <linux/interrupt.h> -#include <linux/slab.h> - -/* ADC controller bit defines */ -#define ADC_DELAY 0xf00 -#define ADC_DOWN 0x01 -#define ADC_TSC_Y (0x01 << 8) -#define ADC_TSC_X (0x00 << 8) -#define TSC_FOURWIRE (~(0x03 << 1)) -#define ADC_CLK_EN (0x01 << 28) /* ADC clock enable */ -#define ADC_READ_CON (0x01 << 12) -#define ADC_CONV (0x01 << 13) -#define ADC_SEMIAUTO (0x01 << 14) -#define ADC_WAITTRIG (0x03 << 14) -#define ADC_RST1 (0x01 << 16) -#define ADC_RST0 (0x00 << 16) -#define ADC_EN (0x01 << 17) -#define ADC_INT (0x01 << 18) -#define WT_INT (0x01 << 20) -#define ADC_INT_EN (0x01 << 21) -#define LVD_INT_EN (0x01 << 22) -#define WT_INT_EN (0x01 << 23) -#define ADC_DIV (0x04 << 1) /* div = 6 */ - -enum ts_state { - TS_WAIT_NEW_PACKET, /* We are waiting next touch report */ - TS_WAIT_X_COORD, /* We are waiting for ADC to report X coord */ - TS_WAIT_Y_COORD, /* We are waiting for ADC to report Y coord */ - TS_IDLE, /* Input device is closed, don't do anything */ -}; - -struct w90p910_ts { - struct input_dev *input; - struct timer_list timer; - struct clk *clk; - int irq_num; - void __iomem *ts_reg; - spinlock_t lock; - enum ts_state state; -}; - -static void w90p910_report_event(struct w90p910_ts *w90p910_ts, bool down) -{ - struct input_dev *dev = w90p910_ts->input; - - if (down) { - input_report_abs(dev, ABS_X, - __raw_readl(w90p910_ts->ts_reg + 0x0c)); - input_report_abs(dev, ABS_Y, - __raw_readl(w90p910_ts->ts_reg + 0x10)); - } - - input_report_key(dev, BTN_TOUCH, down); - input_sync(dev); -} - -static void w90p910_prepare_x_reading(struct w90p910_ts *w90p910_ts) -{ - unsigned long ctlreg; - - __raw_writel(ADC_TSC_X, w90p910_ts->ts_reg + 0x04); - ctlreg = __raw_readl(w90p910_ts->ts_reg); - ctlreg &= ~(ADC_WAITTRIG | WT_INT | WT_INT_EN); - ctlreg |= ADC_SEMIAUTO | ADC_INT_EN | ADC_CONV; - __raw_writel(ctlreg, w90p910_ts->ts_reg); - - w90p910_ts->state = TS_WAIT_X_COORD; -} - -static void w90p910_prepare_y_reading(struct w90p910_ts *w90p910_ts) -{ - unsigned long ctlreg; - - __raw_writel(ADC_TSC_Y, w90p910_ts->ts_reg + 0x04); - ctlreg = __raw_readl(w90p910_ts->ts_reg); - ctlreg &= ~(ADC_WAITTRIG | ADC_INT | WT_INT_EN); - ctlreg |= ADC_SEMIAUTO | ADC_INT_EN | ADC_CONV; - __raw_writel(ctlreg, w90p910_ts->ts_reg); - - w90p910_ts->state = TS_WAIT_Y_COORD; -} - -static void w90p910_prepare_next_packet(struct w90p910_ts *w90p910_ts) -{ - unsigned long ctlreg; - - ctlreg = __raw_readl(w90p910_ts->ts_reg); - ctlreg &= ~(ADC_INT | ADC_INT_EN | ADC_SEMIAUTO | ADC_CONV); - ctlreg |= ADC_WAITTRIG | WT_INT_EN; - __raw_writel(ctlreg, w90p910_ts->ts_reg); - - w90p910_ts->state = TS_WAIT_NEW_PACKET; -} - -static irqreturn_t w90p910_ts_interrupt(int irq, void *dev_id) -{ - struct w90p910_ts *w90p910_ts = dev_id; - unsigned long flags; - - spin_lock_irqsave(&w90p910_ts->lock, flags); - - switch (w90p910_ts->state) { - case TS_WAIT_NEW_PACKET: - /* - * The controller only generates interrupts when pen - * is down. - */ - del_timer(&w90p910_ts->timer); - w90p910_prepare_x_reading(w90p910_ts); - break; - - - case TS_WAIT_X_COORD: - w90p910_prepare_y_reading(w90p910_ts); - break; - - case TS_WAIT_Y_COORD: - w90p910_report_event(w90p910_ts, true); - w90p910_prepare_next_packet(w90p910_ts); - mod_timer(&w90p910_ts->timer, jiffies + msecs_to_jiffies(100)); - break; - - case TS_IDLE: - break; - } - - spin_unlock_irqrestore(&w90p910_ts->lock, flags); - - return IRQ_HANDLED; -} - -static void w90p910_check_pen_up(struct timer_list *t) -{ - struct w90p910_ts *w90p910_ts = from_timer(w90p910_ts, t, timer); - unsigned long flags; - - spin_lock_irqsave(&w90p910_ts->lock, flags); - - if (w90p910_ts->state == TS_WAIT_NEW_PACKET && - !(__raw_readl(w90p910_ts->ts_reg + 0x04) & ADC_DOWN)) { - - w90p910_report_event(w90p910_ts, false); - } - - spin_unlock_irqrestore(&w90p910_ts->lock, flags); -} - -static int w90p910_open(struct input_dev *dev) -{ - struct w90p910_ts *w90p910_ts = input_get_drvdata(dev); - unsigned long val; - - /* enable the ADC clock */ - clk_enable(w90p910_ts->clk); - - __raw_writel(ADC_RST1, w90p910_ts->ts_reg); - msleep(1); - __raw_writel(ADC_RST0, w90p910_ts->ts_reg); - msleep(1); - - /* set delay and screen type */ - val = __raw_readl(w90p910_ts->ts_reg + 0x04); - __raw_writel(val & TSC_FOURWIRE, w90p910_ts->ts_reg + 0x04); - __raw_writel(ADC_DELAY, w90p910_ts->ts_reg + 0x08); - - w90p910_ts->state = TS_WAIT_NEW_PACKET; - wmb(); - - /* set trigger mode */ - val = __raw_readl(w90p910_ts->ts_reg); - val |= ADC_WAITTRIG | ADC_DIV | ADC_EN | WT_INT_EN; - __raw_writel(val, w90p910_ts->ts_reg); - - return 0; -} - -static void w90p910_close(struct input_dev *dev) -{ - struct w90p910_ts *w90p910_ts = input_get_drvdata(dev); - unsigned long val; - - /* disable trigger mode */ - - spin_lock_irq(&w90p910_ts->lock); - - w90p910_ts->state = TS_IDLE; - - val = __raw_readl(w90p910_ts->ts_reg); - val &= ~(ADC_WAITTRIG | ADC_DIV | ADC_EN | WT_INT_EN | ADC_INT_EN); - __raw_writel(val, w90p910_ts->ts_reg); - - spin_unlock_irq(&w90p910_ts->lock); - - /* Now that interrupts are shut off we can safely delete timer */ - del_timer_sync(&w90p910_ts->timer); - - /* stop the ADC clock */ - clk_disable(w90p910_ts->clk); -} - -static int w90x900ts_probe(struct platform_device *pdev) -{ - struct w90p910_ts *w90p910_ts; - struct input_dev *input_dev; - struct resource *res; - int err; - - w90p910_ts = kzalloc(sizeof(struct w90p910_ts), GFP_KERNEL); - input_dev = input_allocate_device(); - if (!w90p910_ts || !input_dev) { - err = -ENOMEM; - goto fail1; - } - - w90p910_ts->input = input_dev; - w90p910_ts->state = TS_IDLE; - spin_lock_init(&w90p910_ts->lock); - timer_setup(&w90p910_ts->timer, w90p910_check_pen_up, 0); - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - err = -ENXIO; - goto fail1; - } - - if (!request_mem_region(res->start, resource_size(res), - pdev->name)) { - err = -EBUSY; - goto fail1; - } - - w90p910_ts->ts_reg = ioremap(res->start, resource_size(res)); - if (!w90p910_ts->ts_reg) { - err = -ENOMEM; - goto fail2; - } - - w90p910_ts->clk = clk_get(&pdev->dev, NULL); - if (IS_ERR(w90p910_ts->clk)) { - err = PTR_ERR(w90p910_ts->clk); - goto fail3; - } - - input_dev->name = "W90P910 TouchScreen"; - input_dev->phys = "w90p910ts/event0"; - input_dev->id.bustype = BUS_HOST; - input_dev->id.vendor = 0x0005; - input_dev->id.product = 0x0001; - input_dev->id.version = 0x0100; - input_dev->dev.parent = &pdev->dev; - input_dev->open = w90p910_open; - input_dev->close = w90p910_close; - - input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); - input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH); - - input_set_abs_params(input_dev, ABS_X, 0, 0x400, 0, 0); - input_set_abs_params(input_dev, ABS_Y, 0, 0x400, 0, 0); - - input_set_drvdata(input_dev, w90p910_ts); - - w90p910_ts->irq_num = platform_get_irq(pdev, 0); - if (request_irq(w90p910_ts->irq_num, w90p910_ts_interrupt, - 0, "w90p910ts", w90p910_ts)) { - err = -EBUSY; - goto fail4; - } - - err = input_register_device(w90p910_ts->input); - if (err) - goto fail5; - - platform_set_drvdata(pdev, w90p910_ts); - - return 0; - -fail5: free_irq(w90p910_ts->irq_num, w90p910_ts); -fail4: clk_put(w90p910_ts->clk); -fail3: iounmap(w90p910_ts->ts_reg); -fail2: release_mem_region(res->start, resource_size(res)); -fail1: input_free_device(input_dev); - kfree(w90p910_ts); - return err; -} - -static int w90x900ts_remove(struct platform_device *pdev) -{ - struct w90p910_ts *w90p910_ts = platform_get_drvdata(pdev); - struct resource *res; - - free_irq(w90p910_ts->irq_num, w90p910_ts); - del_timer_sync(&w90p910_ts->timer); - iounmap(w90p910_ts->ts_reg); - - clk_put(w90p910_ts->clk); - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - release_mem_region(res->start, resource_size(res)); - - input_unregister_device(w90p910_ts->input); - kfree(w90p910_ts); - - return 0; -} - -static struct platform_driver w90x900ts_driver = { - .probe = w90x900ts_probe, - .remove = w90x900ts_remove, - .driver = { - .name = "nuc900-ts", - }, -}; -module_platform_driver(w90x900ts_driver); - -MODULE_AUTHOR("Wan ZongShun <mcuos.com@gmail.com>"); -MODULE_DESCRIPTION("w90p910 touch screen driver!"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:nuc900-ts"); |