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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/drivers/input/touchscreen/mainstone-wm97xx.c | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
download | FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2 FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip |
Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/drivers/input/touchscreen/mainstone-wm97xx.c')
-rw-r--r-- | ANDROID_3.4.5/drivers/input/touchscreen/mainstone-wm97xx.c | 310 |
1 files changed, 0 insertions, 310 deletions
diff --git a/ANDROID_3.4.5/drivers/input/touchscreen/mainstone-wm97xx.c b/ANDROID_3.4.5/drivers/input/touchscreen/mainstone-wm97xx.c deleted file mode 100644 index 7d2b2136..00000000 --- a/ANDROID_3.4.5/drivers/input/touchscreen/mainstone-wm97xx.c +++ /dev/null @@ -1,310 +0,0 @@ -/* - * mainstone-wm97xx.c -- Mainstone Continuous Touch screen driver for - * Wolfson WM97xx AC97 Codecs. - * - * Copyright 2004, 2007 Wolfson Microelectronics PLC. - * Author: Liam Girdwood <lrg@slimlogic.co.uk> - * Parts Copyright : Ian Molton <spyro@f2s.com> - * Andrew Zabolotny <zap@homelink.ru> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * Notes: - * This is a wm97xx extended touch driver to capture touch - * data in a continuous manner on the Intel XScale architecture - * - * Features: - * - codecs supported:- WM9705, WM9712, WM9713 - * - processors supported:- Intel XScale PXA25x, PXA26x, PXA27x - * - */ - -#include <linux/module.h> -#include <linux/moduleparam.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/irq.h> -#include <linux/interrupt.h> -#include <linux/wm97xx.h> -#include <linux/io.h> -#include <linux/gpio.h> - -#include <mach/regs-ac97.h> - -#include <asm/mach-types.h> - -struct continuous { - u16 id; /* codec id */ - u8 code; /* continuous code */ - u8 reads; /* number of coord reads per read cycle */ - u32 speed; /* number of coords per second */ -}; - -#define WM_READS(sp) ((sp / HZ) + 1) - -static const struct continuous cinfo[] = { - {WM9705_ID2, 0, WM_READS(94), 94}, - {WM9705_ID2, 1, WM_READS(188), 188}, - {WM9705_ID2, 2, WM_READS(375), 375}, - {WM9705_ID2, 3, WM_READS(750), 750}, - {WM9712_ID2, 0, WM_READS(94), 94}, - {WM9712_ID2, 1, WM_READS(188), 188}, - {WM9712_ID2, 2, WM_READS(375), 375}, - {WM9712_ID2, 3, WM_READS(750), 750}, - {WM9713_ID2, 0, WM_READS(94), 94}, - {WM9713_ID2, 1, WM_READS(120), 120}, - {WM9713_ID2, 2, WM_READS(154), 154}, - {WM9713_ID2, 3, WM_READS(188), 188}, -}; - -/* continuous speed index */ -static int sp_idx; -static u16 last, tries; -static int irq; - -/* - * Pen sampling frequency (Hz) in continuous mode. - */ -static int cont_rate = 200; -module_param(cont_rate, int, 0); -MODULE_PARM_DESC(cont_rate, "Sampling rate in continuous mode (Hz)"); - -/* - * Pen down detection. - * - * This driver can either poll or use an interrupt to indicate a pen down - * event. If the irq request fails then it will fall back to polling mode. - */ -static int pen_int; -module_param(pen_int, int, 0); -MODULE_PARM_DESC(pen_int, "Pen down detection (1 = interrupt, 0 = polling)"); - -/* - * Pressure readback. - * - * Set to 1 to read back pen down pressure - */ -static int pressure; -module_param(pressure, int, 0); -MODULE_PARM_DESC(pressure, "Pressure readback (1 = pressure, 0 = no pressure)"); - -/* - * AC97 touch data slot. - * - * Touch screen readback data ac97 slot - */ -static int ac97_touch_slot = 5; -module_param(ac97_touch_slot, int, 0); -MODULE_PARM_DESC(ac97_touch_slot, "Touch screen data slot AC97 number"); - - -/* flush AC97 slot 5 FIFO on pxa machines */ -#ifdef CONFIG_PXA27x -static void wm97xx_acc_pen_up(struct wm97xx *wm) -{ - schedule_timeout_uninterruptible(1); - - while (MISR & (1 << 2)) - MODR; -} -#else -static void wm97xx_acc_pen_up(struct wm97xx *wm) -{ - unsigned int count; - - schedule_timeout_uninterruptible(1); - - for (count = 0; count < 16; count++) - MODR; -} -#endif - -static int wm97xx_acc_pen_down(struct wm97xx *wm) -{ - u16 x, y, p = 0x100 | WM97XX_ADCSEL_PRES; - int reads = 0; - - /* When the AC97 queue has been drained we need to allow time - * to buffer up samples otherwise we end up spinning polling - * for samples. The controller can't have a suitably low - * threshold set to use the notifications it gives. - */ - schedule_timeout_uninterruptible(1); - - if (tries > 5) { - tries = 0; - return RC_PENUP; - } - - x = MODR; - if (x == last) { - tries++; - return RC_AGAIN; - } - last = x; - do { - if (reads) - x = MODR; - y = MODR; - if (pressure) - p = MODR; - - dev_dbg(wm->dev, "Raw coordinates: x=%x, y=%x, p=%x\n", - x, y, p); - - /* are samples valid */ - if ((x & WM97XX_ADCSEL_MASK) != WM97XX_ADCSEL_X || - (y & WM97XX_ADCSEL_MASK) != WM97XX_ADCSEL_Y || - (p & WM97XX_ADCSEL_MASK) != WM97XX_ADCSEL_PRES) - goto up; - - /* coordinate is good */ - tries = 0; - input_report_abs(wm->input_dev, ABS_X, x & 0xfff); - input_report_abs(wm->input_dev, ABS_Y, y & 0xfff); - input_report_abs(wm->input_dev, ABS_PRESSURE, p & 0xfff); - input_report_key(wm->input_dev, BTN_TOUCH, (p != 0)); - input_sync(wm->input_dev); - reads++; - } while (reads < cinfo[sp_idx].reads); -up: - return RC_PENDOWN | RC_AGAIN; -} - -static int wm97xx_acc_startup(struct wm97xx *wm) -{ - int idx = 0, ret = 0; - - /* check we have a codec */ - if (wm->ac97 == NULL) - return -ENODEV; - - /* Go you big red fire engine */ - for (idx = 0; idx < ARRAY_SIZE(cinfo); idx++) { - if (wm->id != cinfo[idx].id) - continue; - sp_idx = idx; - if (cont_rate <= cinfo[idx].speed) - break; - } - wm->acc_rate = cinfo[sp_idx].code; - wm->acc_slot = ac97_touch_slot; - dev_info(wm->dev, - "mainstone accelerated touchscreen driver, %d samples/sec\n", - cinfo[sp_idx].speed); - - /* IRQ driven touchscreen is used on Palm hardware */ - if (machine_is_palmt5() || machine_is_palmtx() || machine_is_palmld()) { - pen_int = 1; - irq = 27; - /* There is some obscure mutant of WM9712 interbred with WM9713 - * used on Palm HW */ - wm->variant = WM97xx_WM1613; - } else if (machine_is_mainstone() && pen_int) - irq = 4; - - if (irq) { - ret = gpio_request(irq, "Touchscreen IRQ"); - if (ret) - goto out; - - ret = gpio_direction_input(irq); - if (ret) { - gpio_free(irq); - goto out; - } - - wm->pen_irq = gpio_to_irq(irq); - irq_set_irq_type(wm->pen_irq, IRQ_TYPE_EDGE_BOTH); - } else /* pen irq not supported */ - pen_int = 0; - - /* codec specific irq config */ - if (pen_int) { - switch (wm->id) { - case WM9705_ID2: - break; - case WM9712_ID2: - case WM9713_ID2: - /* use PEN_DOWN GPIO 13 to assert IRQ on GPIO line 2 */ - wm97xx_config_gpio(wm, WM97XX_GPIO_13, WM97XX_GPIO_IN, - WM97XX_GPIO_POL_HIGH, - WM97XX_GPIO_STICKY, - WM97XX_GPIO_WAKE); - wm97xx_config_gpio(wm, WM97XX_GPIO_2, WM97XX_GPIO_OUT, - WM97XX_GPIO_POL_HIGH, - WM97XX_GPIO_NOTSTICKY, - WM97XX_GPIO_NOWAKE); - break; - default: - dev_err(wm->dev, - "pen down irq not supported on this device\n"); - pen_int = 0; - break; - } - } - -out: - return ret; -} - -static void wm97xx_acc_shutdown(struct wm97xx *wm) -{ - /* codec specific deconfig */ - if (pen_int) { - if (irq) - gpio_free(irq); - wm->pen_irq = 0; - } -} - -static void wm97xx_irq_enable(struct wm97xx *wm, int enable) -{ - if (enable) - enable_irq(wm->pen_irq); - else - disable_irq_nosync(wm->pen_irq); -} - -static struct wm97xx_mach_ops mainstone_mach_ops = { - .acc_enabled = 1, - .acc_pen_up = wm97xx_acc_pen_up, - .acc_pen_down = wm97xx_acc_pen_down, - .acc_startup = wm97xx_acc_startup, - .acc_shutdown = wm97xx_acc_shutdown, - .irq_enable = wm97xx_irq_enable, - .irq_gpio = WM97XX_GPIO_2, -}; - -static int mainstone_wm97xx_probe(struct platform_device *pdev) -{ - struct wm97xx *wm = platform_get_drvdata(pdev); - - return wm97xx_register_mach_ops(wm, &mainstone_mach_ops); -} - -static int mainstone_wm97xx_remove(struct platform_device *pdev) -{ - struct wm97xx *wm = platform_get_drvdata(pdev); - - wm97xx_unregister_mach_ops(wm); - return 0; -} - -static struct platform_driver mainstone_wm97xx_driver = { - .probe = mainstone_wm97xx_probe, - .remove = mainstone_wm97xx_remove, - .driver = { - .name = "wm97xx-touch", - }, -}; -module_platform_driver(mainstone_wm97xx_driver); - -/* Module information */ -MODULE_AUTHOR("Liam Girdwood <lrg@slimlogic.co.uk>"); -MODULE_DESCRIPTION("wm97xx continuous touch driver for mainstone"); -MODULE_LICENSE("GPL"); |