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Diffstat (limited to 'packages/kexecboot/linux-kexecboot-2.6.24/tosa/0034-Driver-for-WM97xx-touchscreens-in-streaming-mode-on.patch')
-rw-r--r--packages/kexecboot/linux-kexecboot-2.6.24/tosa/0034-Driver-for-WM97xx-touchscreens-in-streaming-mode-on.patch329
1 files changed, 0 insertions, 329 deletions
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
deleted file mode 100644
index 0391cfcd83..0000000000
--- a/packages/kexecboot/linux-kexecboot-2.6.24/tosa/0034-Driver-for-WM97xx-touchscreens-in-streaming-mode-on.patch
+++ /dev/null
@@ -1,329 +0,0 @@
-From 821604bad5ce1ef942eeb420afd9ea2c5c92875e Mon Sep 17 00:00:00 2001
-From: Mark Brown <broonie@opensource.wolfsonmicro.com>
-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 <liam.girdwood@wolfsonmicro.com>
-Signed-off-by: Graeme Gregory <gg@opensource.wolfsonmicro.com>
-Signed-off-by: Mike Arthur <mike.arthur@wolfsonmicro.com>
-Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
-Cc: Dmitry Baryshkov <dbaryshkov@gmail.com>
-Cc: Stanley Cai <stanley.cai@intel.com>
-Cc: Rodolfo Giometti <giometti@enneenne.com>
-Cc: Russell King <rmk@arm.linux.org.uk>
-Cc: Marc Kleine-Budde <mkl@pengutronix.de>
-Cc: Ian Molton <spyro@f2s.com>
-Cc: Vince Sanders <vince@kyllikki.org>
-Cc: Andrew Zabolotny <zap@homelink.ru>
----
- 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 <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 archictecture
-+ *
-+ * Features:
-+ * - codecs supported:- WM9705, WM9712, WM9713
-+ * - processors supported:- Intel XScale PXA25x, PXA26x, PXA27x
-+ *
-+ */
-+
-+#include <linux/module.h>
-+#include <linux/moduleparam.h>
-+#include <linux/version.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 <asm/arch/pxa-regs.h>
-+
-+#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 <liam.girdwood@wolfsonmicro.com>");
-+MODULE_DESCRIPTION("wm97xx continuous touch driver for mainstone");
-+MODULE_LICENSE("GPL");
---
-1.5.3.8
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-25 00:47:40 +0000