From f186c8103c9195eb53238c928fe03f7af1d43479 Mon Sep 17 00:00:00 2001 From: Dmitry Baryshkov Date: Tue, 9 Dec 2008 00:35:08 +0300 Subject: linux-kexecboot: support tosa port patches from linux-rp-2.6.24 to linux-kexecboot to enable booting on tosa. Signed-off-by: Dmitry Baryshkov --- ...-WM97xx-touchscreens-in-streaming-mode-on.patch | 329 +++++++++++++++++++++ 1 file changed, 329 insertions(+) create mode 100644 packages/kexecboot/linux-kexecboot-2.6.24/tosa/0034-Driver-for-WM97xx-touchscreens-in-streaming-mode-on.patch (limited to 'packages/kexecboot/linux-kexecboot-2.6.24/tosa/0034-Driver-for-WM97xx-touchscreens-in-streaming-mode-on.patch') diff --git a/packages/kexecboot/linux-kexecboot-2.6.24/tosa/0034-Driver-for-WM97xx-touchscreens-in-streaming-mode-on.patch b/packages/kexecboot/linux-kexecboot-2.6.24/tosa/0034-Driver-for-WM97xx-touchscreens-in-streaming-mode-on.patch new file mode 100644 index 0000000000..0391cfcd83 --- /dev/null +++ b/packages/kexecboot/linux-kexecboot-2.6.24/tosa/0034-Driver-for-WM97xx-touchscreens-in-streaming-mode-on.patch @@ -0,0 +1,329 @@ +From 821604bad5ce1ef942eeb420afd9ea2c5c92875e Mon Sep 17 00:00:00 2001 +From: Mark Brown +Date: Sat, 26 Jan 2008 21:14:19 +0300 +Subject: [PATCH 34/64] Driver for WM97xx touchscreens in streaming mode on Mainstone + +Signed-off-by: Liam Girdwood +Signed-off-by: Graeme Gregory +Signed-off-by: Mike Arthur +Signed-off-by: Mark Brown +Cc: Dmitry Baryshkov +Cc: Stanley Cai +Cc: Rodolfo Giometti +Cc: Russell King +Cc: Marc Kleine-Budde +Cc: Ian Molton +Cc: Vince Sanders +Cc: Andrew Zabolotny +--- + drivers/input/touchscreen/mainstone-wm97xx.c | 298 ++++++++++++++++++++++++++ + 1 files changed, 298 insertions(+), 0 deletions(-) + create mode 100644 drivers/input/touchscreen/mainstone-wm97xx.c + +diff --git a/drivers/input/touchscreen/mainstone-wm97xx.c b/drivers/input/touchscreen/mainstone-wm97xx.c +new file mode 100644 +index 0000000..8e1c35d +--- /dev/null ++++ b/drivers/input/touchscreen/mainstone-wm97xx.c +@@ -0,0 +1,298 @@ ++/* ++ * mainstone-wm97xx.c -- Mainstone Continuous Touch screen driver for ++ * Wolfson WM97xx AC97 Codecs. ++ * ++ * Copyright 2004, 2007 Wolfson Microelectronics PLC. ++ * Author: Liam Girdwood ++ * liam.girdwood@wolfsonmicro.com or linux@wolfsonmicro.com ++ * Parts Copyright : Ian Molton ++ * Andrew Zabolotny ++ * ++ * 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 archictecture ++ * ++ * Features: ++ * - codecs supported:- WM9705, WM9712, WM9713 ++ * - processors supported:- Intel XScale PXA25x, PXA26x, PXA27x ++ * ++ */ ++ ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++ ++#define VERSION "0.13" ++ ++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; ++ ++/* ++ * 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) ++{ ++ set_current_state(TASK_INTERRUPTIBLE); ++ schedule_timeout(1); ++ ++ while (MISR & (1 << 2)) ++ MODR; ++} ++#else ++static void wm97xx_acc_pen_up(struct wm97xx *wm) ++{ ++ int count = 16; ++ set_current_state(TASK_INTERRUPTIBLE); ++ schedule_timeout(1); ++ ++ while (count < 16) { ++ MODR; ++ count--; ++ } ++} ++#endif ++ ++static int wm97xx_acc_pen_down(struct wm97xx *wm) ++{ ++ u16 x, y, p = 0x100 | WM97XX_ADCSEL_PRES; ++ int reads = 0; ++ ++ /* data is never immediately available after pen down irq */ ++ set_current_state(TASK_INTERRUPTIBLE); ++ schedule_timeout(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; ++ ++ /* are samples valid */ ++ if ((x & 0x7000) != WM97XX_ADCSEL_X || ++ (y & 0x7000) != WM97XX_ADCSEL_Y || ++ (p & 0x7000) != 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_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; ++ ++ /* 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); ++ ++ /* codec specific irq config */ ++ if (pen_int) { ++ switch (wm->id) { ++ case WM9705_ID2: ++ wm->pen_irq = IRQ_GPIO(4); ++ set_irq_type(IRQ_GPIO(4), IRQT_BOTHEDGE); ++ break; ++ case WM9712_ID2: ++ case WM9713_ID2: ++ /* enable pen down interrupt */ ++ /* use PEN_DOWN GPIO 13 to assert IRQ on GPIO line 2 */ ++ wm->pen_irq = MAINSTONE_AC97_IRQ; ++ 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; ++ } ++ } ++ ++ return 0; ++} ++ ++static void wm97xx_acc_shutdown(struct wm97xx *wm) ++{ ++ /* codec specific deconfig */ ++ if (pen_int) { ++ switch (wm->id & 0xffff) { ++ case WM9705_ID2: ++ wm->pen_irq = 0; ++ break; ++ case WM9712_ID2: ++ case WM9713_ID2: ++ /* disable interrupt */ ++ wm->pen_irq = 0; ++ break; ++ } ++ } ++} ++ ++static void wm97xx_irq_enable(struct wm97xx *wm, int enable) ++{ ++ if (enable) ++ enable_irq(wm->pen_irq); ++ else ++ disable_irq(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, ++}; ++ ++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", ++ }, ++}; ++ ++static int __init mainstone_wm97xx_init(void) ++{ ++ return platform_driver_register(&mainstone_wm97xx_driver); ++} ++ ++static void __exit mainstone_wm97xx_exit(void) ++{ ++ platform_driver_unregister(&mainstone_wm97xx_driver); ++} ++ ++module_init(mainstone_wm97xx_init); ++module_exit(mainstone_wm97xx_exit); ++ ++/* Module information */ ++MODULE_AUTHOR("Liam Girdwood "); ++MODULE_DESCRIPTION("wm97xx continuous touch driver for mainstone"); ++MODULE_LICENSE("GPL"); +-- +1.5.3.8 + -- cgit v1.2.3