diff options
Diffstat (limited to 'target/linux/omap24xx/patches-3.3/315-n800-touchscreen-and-keypad-drivers.patch')
| -rw-r--r-- | target/linux/omap24xx/patches-3.3/315-n800-touchscreen-and-keypad-drivers.patch | 2791 |
1 files changed, 0 insertions, 2791 deletions
diff --git a/target/linux/omap24xx/patches-3.3/315-n800-touchscreen-and-keypad-drivers.patch b/target/linux/omap24xx/patches-3.3/315-n800-touchscreen-and-keypad-drivers.patch deleted file mode 100644 index 106a5d80c8..0000000000 --- a/target/linux/omap24xx/patches-3.3/315-n800-touchscreen-and-keypad-drivers.patch +++ /dev/null @@ -1,2791 +0,0 @@ -From 63e56392b9024aceb610d7b4e1979e2d2cebd217 Mon Sep 17 00:00:00 2001 -From: Marat Radchenko <marat@slonopotamus.org> -Date: Tue, 18 Oct 2011 21:48:23 +0400 -Subject: [PATCH 1/2] TSC2301 driver (touchscreen and keypad) - -This patch adds support for TSC2301 touchscreen/keypad/audio chip found on Nokia N800. -Touchscreen and keypad are fully functional, audio part only provides power management. ---- - drivers/input/keyboard/Kconfig | 6 + - drivers/input/keyboard/Makefile | 1 + - drivers/input/keyboard/tsc2301_kp.c | 475 +++++++++++++++ - drivers/input/touchscreen/Kconfig | 6 + - drivers/input/touchscreen/Makefile | 1 + - drivers/input/touchscreen/tsc2301_ts.c | 676 +++++++++++++++++++++ - drivers/spi/Kconfig | 22 + - drivers/spi/Makefile | 3 + - drivers/spi/tsc2301-core.c | 297 ++++++++++ - drivers/spi/tsc2301-mixer.c | 1003 ++++++++++++++++++++++++++++++++ - include/linux/spi/tsc2301.h | 208 +++++++ - 11 files changed, 2698 insertions(+), 0 deletions(-) - create mode 100644 drivers/input/keyboard/tsc2301_kp.c - create mode 100644 drivers/input/touchscreen/tsc2301_ts.c - create mode 100644 drivers/spi/tsc2301-core.c - create mode 100644 drivers/spi/tsc2301-mixer.c - create mode 100644 include/linux/spi/tsc2301.h - ---- a/drivers/input/keyboard/Kconfig -+++ b/drivers/input/keyboard/Kconfig -@@ -547,6 +547,12 @@ config KEYBOARD_TNETV107X - To compile this driver as a module, choose M here: the - module will be called tnetv107x-keypad. - -+config KEYBOARD_TSC2301 -+ tristate "TSC2301 keypad support" -+ depends on SPI_TSC2301 -+ help -+ Say Y here for if you are using the keypad features of TSC2301. -+ - config KEYBOARD_TWL4030 - tristate "TI TWL4030/TWL5030/TPS659x0 keypad support" - depends on TWL4030_CORE ---- a/drivers/input/keyboard/Makefile -+++ b/drivers/input/keyboard/Makefile -@@ -49,6 +49,7 @@ obj-$(CONFIG_KEYBOARD_SUNKBD) += sunkbd - obj-$(CONFIG_KEYBOARD_TC3589X) += tc3589x-keypad.o - obj-$(CONFIG_KEYBOARD_TEGRA) += tegra-kbc.o - obj-$(CONFIG_KEYBOARD_TNETV107X) += tnetv107x-keypad.o -+obj-$(CONFIG_KEYBOARD_TSC2301) += tsc2301_kp.o - obj-$(CONFIG_KEYBOARD_TWL4030) += twl4030_keypad.o - obj-$(CONFIG_KEYBOARD_XTKBD) += xtkbd.o - obj-$(CONFIG_KEYBOARD_W90P910) += w90p910_keypad.o ---- /dev/null -+++ b/drivers/input/keyboard/tsc2301_kp.c -@@ -0,0 +1,475 @@ -+/* -+ * TSC2301 keypad driver -+ * -+ * Copyright (C) 2005-2006 Nokia Corporation -+ * -+ * Written by Jarkko Oikarinen -+ * Rewritten by Juha Yrjola <juha.yrjola@nokia.com> -+ * -+ * 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. -+ * -+ * This program is distributed in the hope that it will be useful, -+ * but WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -+ * GNU General Public License for more details. -+ * -+ * You should have received a copy of the GNU General Public License -+ * along with this program; if not, write to the Free Software -+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA -+ * -+ */ -+ -+#include <linux/kernel.h> -+#include <linux/module.h> -+#include <linux/input.h> -+#include <linux/interrupt.h> -+#include <linux/irq.h> -+#include <linux/delay.h> -+#include <linux/spi/spi.h> -+ -+#include <linux/spi/tsc2301.h> -+ -+#define TSC2301_KEYBOARD_PRODUCT_ID 0x0051 -+#define TSC2301_KEYBOARD_PRODUCT_VERSION 0x0001 -+#define TSC2301_DEBOUNCE_TIME_2MS 0x0000 -+#define TSC2301_DEBOUNCE_TIME_10MS 0x0800 -+#define TSC2301_DEBOUNCE_TIME_20MS 0x1000 -+#define TSC2301_DEBOUNCE_TIME_50MS 0x1800 -+#define TSC2301_DEBOUNCE_TIME_60MS 0x2000 -+#define TSC2301_DEBOUNCE_TIME_80MS 0x2800 -+#define TSC2301_DEBOUNCE_TIME_100MS 0x3000 -+#define TSC2301_DEBOUNCE_TIME_120MS 0x3800 -+ -+#define TSC2301_DEBOUNCE_TIME TSC2301_DEBOUNCE_TIME_20MS -+ -+#define TSC2301_RELEASE_TIMEOUT 50 -+ -+struct tsc2301_kp { -+ struct input_dev *idev; -+ char phys[32]; -+ spinlock_t lock; -+ struct mutex mutex; -+ struct timer_list timer; -+ u16 keys_pressed; -+ unsigned pending:1; -+ unsigned user_disabled:1; -+ unsigned disable_depth; -+ -+ struct spi_transfer read_xfer[4]; -+ struct spi_message read_msg; -+ -+ u16 data; -+ u16 mask; -+ -+ int irq; -+ s16 keymap[16]; -+}; -+ -+static inline int tsc2301_kp_disabled(struct tsc2301 *tsc) -+{ -+ return tsc->kp->disable_depth != 0; -+} -+ -+static void tsc2301_kp_send_key_events(struct tsc2301 *tsc, -+ u16 prev_state, -+ u16 new_state) -+{ -+ struct tsc2301_kp *kp = tsc->kp; -+ u16 common, released, pressed; -+ int i; -+ -+ common = prev_state & new_state; -+ released = common ^ prev_state; -+ pressed = common ^ new_state; -+ if (!released && !pressed) -+ return; -+ for (i = 0; i < 16 && (released || pressed); i++) { -+ if (released & 1) { -+ dev_dbg(&tsc->spi->dev, "key %d released\n", i); -+ input_report_key(kp->idev, kp->keymap[i], 0); -+ } -+ released >>= 1; -+ if (pressed & 1) { -+ dev_dbg(&tsc->spi->dev, "key %d pressed\n", i); -+ input_report_key(kp->idev, kp->keymap[i], 1); -+ } -+ pressed >>= 1; -+ } -+ input_sync(kp->idev); -+} -+ -+static inline void _filter_out(struct tsc2301 *tsc, u16 prev_state, -+ u16 *new_state, int row1, int row2, u8 rect_pat) -+{ -+ u16 mask; -+ -+ mask = (rect_pat << (row1 * 4)) | (rect_pat << (row2 * 4)); -+ mask &= ~prev_state; -+ *new_state &= ~mask; -+ dev_dbg(&tsc->spi->dev, "filtering ghost keys %02x\n", mask); -+} -+ -+static void tsc2301_filter_ghost_keys(struct tsc2301 *tsc, u16 prev_state, -+ u16 *new_state) -+{ -+ int row1, row2; -+ u16 key_map; -+ u16 row1_map; -+ static const u8 rect_pat[] = { -+ 0x3, 0x5, 0x9, 0x6, 0xa, 0xc, 0, -+ }; -+ -+ key_map = *new_state; -+ for (row1 = 0; row1 < 4; row1++) { -+ row1_map = (key_map >> (row1 * 4)) & 0xf; -+ if (!row1_map) -+ continue; -+ for (row2 = row1 + 1; row2 < 4; row2++) { -+ u16 rect_map = (key_map >> (row2 * 4)) & 0xf; -+ const u8 *rp; -+ -+ rect_map &= row1_map; -+ if (!rect_map) -+ continue; -+ for (rp = rect_pat; *rp; rp++) -+ if ((rect_map & *rp) == *rp) -+ _filter_out(tsc, prev_state, new_state, -+ row1, row2, *rp); -+ } -+ } -+} -+ -+static void tsc2301_kp_timer(unsigned long arg) -+{ -+ struct tsc2301 *tsc = (void *) arg; -+ struct tsc2301_kp *kp = tsc->kp; -+ unsigned long flags; -+ -+ tsc2301_kp_send_key_events(tsc, kp->keys_pressed, 0); -+ spin_lock_irqsave(&kp->lock, flags); -+ kp->keys_pressed = 0; -+ spin_unlock_irqrestore(&kp->lock, flags); -+} -+ -+static void tsc2301_kp_rx(void *arg) -+{ -+ struct tsc2301 *tsc = arg; -+ struct tsc2301_kp *kp = tsc->kp; -+ unsigned long flags; -+ u16 kp_data; -+ -+ kp_data = kp->data; -+ dev_dbg(&tsc->spi->dev, "KP data %04x\n", kp_data); -+ -+ tsc2301_filter_ghost_keys(tsc, kp->keys_pressed, &kp_data); -+ tsc2301_kp_send_key_events(tsc, kp->keys_pressed, kp_data); -+ spin_lock_irqsave(&kp->lock, flags); -+ kp->keys_pressed = kp_data; -+ kp->pending = 0; -+ spin_unlock_irqrestore(&kp->lock, flags); -+} -+ -+static irqreturn_t tsc2301_kp_irq_handler(int irq, void *dev_id) -+{ -+ struct tsc2301 *tsc = dev_id; -+ struct tsc2301_kp *kp = tsc->kp; -+ unsigned long flags; -+ int r; -+ -+ spin_lock_irqsave(&kp->lock, flags); -+ if (tsc2301_kp_disabled(tsc)) { -+ spin_unlock_irqrestore(&kp->lock, flags); -+ return IRQ_HANDLED; -+ } -+ kp->pending = 1; -+ spin_unlock_irqrestore(&kp->lock, flags); -+ mod_timer(&kp->timer, -+ jiffies + msecs_to_jiffies(TSC2301_RELEASE_TIMEOUT)); -+ r = spi_async(tsc->spi, &tsc->kp->read_msg); -+ if (r) -+ dev_err(&tsc->spi->dev, "kp: spi_async() failed"); -+ return IRQ_HANDLED; -+} -+ -+static void tsc2301_kp_start_scan(struct tsc2301 *tsc) -+{ -+ tsc2301_write_reg(tsc, TSC2301_REG_KPMASK, tsc->kp->mask); -+ tsc2301_write_reg(tsc, TSC2301_REG_KEY, TSC2301_DEBOUNCE_TIME); -+} -+ -+static void tsc2301_kp_stop_scan(struct tsc2301 *tsc) -+{ -+ tsc2301_write_reg(tsc, TSC2301_REG_KEY, 1 << 14); -+} -+ -+/* Must be called with the mutex held */ -+static void tsc2301_kp_enable(struct tsc2301 *tsc) -+{ -+ struct tsc2301_kp *kp = tsc->kp; -+ unsigned long flags; -+ -+ spin_lock_irqsave(&kp->lock, flags); -+ BUG_ON(!tsc2301_kp_disabled(tsc)); -+ if (--kp->disable_depth != 0) { -+ spin_unlock_irqrestore(&kp->lock, flags); -+ return; -+ } -+ spin_unlock_irqrestore(&kp->lock, flags); -+ -+ irq_set_irq_type(kp->irq, IRQ_TYPE_EDGE_FALLING); -+ tsc2301_kp_start_scan(tsc); -+ enable_irq(kp->irq); -+} -+ -+/* Must be called with the mutex held */ -+static int tsc2301_kp_disable(struct tsc2301 *tsc, int release_keys) -+{ -+ struct tsc2301_kp *kp = tsc->kp; -+ unsigned long flags; -+ -+ spin_lock_irqsave(&kp->lock, flags); -+ if (kp->disable_depth++ != 0) { -+ spin_unlock_irqrestore(&kp->lock, flags); -+ goto out; -+ } -+ disable_irq_nosync(kp->irq); -+ irq_set_irq_type(kp->irq, IRQ_TYPE_NONE); -+ spin_unlock_irqrestore(&kp->lock, flags); -+ -+ while (kp->pending) { -+ msleep(1); -+ } -+ -+ tsc2301_kp_stop_scan(tsc); -+out: -+ if (!release_keys) -+ del_timer(&kp->timer); /* let timeout release keys */ -+ -+ return 0; -+} -+ -+/* The following workaround is needed for a HW bug triggered by the -+ * following: -+ * 1. keep any key pressed -+ * 2. disable keypad -+ * 3. release all keys -+ * 4. reenable keypad -+ * 5. disable touch screen controller -+ * -+ * After this the keypad scanner will get stuck in busy state and won't -+ * report any interrupts for further keypresses. One way to recover is to -+ * restart the keypad scanner whenever we enable / disable the -+ * touchscreen controller. -+ */ -+void tsc2301_kp_restart(struct tsc2301 *tsc) -+{ -+ if (!tsc2301_kp_disabled(tsc)) { -+ tsc2301_kp_start_scan(tsc); -+ } -+} -+ -+static ssize_t tsc2301_kp_disable_show(struct device *dev, -+ struct device_attribute *attr, char *buf) -+{ -+ struct tsc2301 *tsc = dev_get_drvdata(dev); -+ -+ return sprintf(buf, "%u\n", tsc2301_kp_disabled(tsc) ? 1 : 0); -+} -+ -+static ssize_t tsc2301_kp_disable_store(struct device *dev, -+ struct device_attribute *attr, -+ const char *buf, size_t count) -+{ -+ struct tsc2301 *tsc = dev_get_drvdata(dev); -+ struct tsc2301_kp *kp = tsc->kp; -+ char *endp; -+ int i; -+ -+ i = simple_strtoul(buf, &endp, 10); -+ i = i ? 1 : 0; -+ -+ mutex_lock(&kp->mutex); -+ if (i == kp->user_disabled) { -+ mutex_unlock(&kp->mutex); -+ return count; -+ } -+ kp->user_disabled = i; -+ -+ if (i) -+ tsc2301_kp_disable(tsc, 1); -+ else -+ tsc2301_kp_enable(tsc); -+ mutex_unlock(&kp->mutex); -+ -+ return count; -+} -+ -+static DEVICE_ATTR(disable_kp, 0664, tsc2301_kp_disable_show, -+ tsc2301_kp_disable_store); -+ -+static const u16 tsc2301_kp_read_data = 0x8000 | TSC2301_REG_KPDATA; -+ -+static void tsc2301_kp_setup_spi_xfer(struct tsc2301 *tsc) -+{ -+ struct tsc2301_kp *kp = tsc->kp; -+ struct spi_message *m = &kp->read_msg; -+ struct spi_transfer *x = &kp->read_xfer[0]; -+ -+ spi_message_init(&kp->read_msg); -+ -+ x->tx_buf = &tsc2301_kp_read_data; -+ x->len = 2; -+ spi_message_add_tail(x, m); -+ x++; -+ -+ x->rx_buf = &kp->data; -+ x->len = 2; -+ spi_message_add_tail(x, m); -+ -+ m->complete = tsc2301_kp_rx; -+ m->context = tsc; -+} -+ -+#ifdef CONFIG_PM -+int tsc2301_kp_suspend(struct tsc2301 *tsc) -+{ -+ struct tsc2301_kp *kp = tsc->kp; -+ -+ mutex_lock(&kp->mutex); -+ tsc2301_kp_disable(tsc, 1); -+ mutex_unlock(&kp->mutex); -+ return 0; -+} -+ -+void tsc2301_kp_resume(struct tsc2301 *tsc) -+{ -+ struct tsc2301_kp *kp = tsc->kp; -+ -+ mutex_lock(&kp->mutex); -+ tsc2301_kp_enable(tsc); -+ mutex_unlock(&kp->mutex); -+} -+#endif -+ -+int __devinit tsc2301_kp_init(struct tsc2301 *tsc, -+ struct tsc2301_platform_data *pdata) -+{ -+ struct input_dev *idev; -+ struct tsc2301_kp *kp; -+ int r, i; -+ u16 mask; -+ -+ if (pdata->keyb_int < 0) { -+ dev_err(&tsc->spi->dev, "need kbirq"); -+ return -EINVAL; -+ } -+ -+ kp = kzalloc(sizeof(*kp), GFP_KERNEL); -+ if (kp == NULL) -+ return -ENOMEM; -+ tsc->kp = kp; -+ -+ kp->irq = pdata->keyb_int; -+ spin_lock_init(&kp->lock); -+ mutex_init(&kp->mutex); -+ -+ init_timer(&kp->timer); -+ kp->timer.data = (unsigned long) tsc; -+ kp->timer.function = tsc2301_kp_timer; -+ -+ idev = input_allocate_device(); -+ if (idev == NULL) { -+ r = -ENOMEM; -+ goto err1; -+ } -+ if (pdata->keyb_name) -+ idev->name = pdata->keyb_name; -+ else -+ idev->name = "TSC2301 keypad"; -+ snprintf(kp->phys, sizeof(kp->phys), "%s/input-kp", dev_name(&tsc->spi->dev)); -+ idev->phys = kp->phys; -+ -+ mask = 0; -+ idev->evbit[0] = BIT(EV_KEY); -+ for (i = 0; i < 16; i++) { -+ if (pdata->keymap[i] > 0) { -+ set_bit(pdata->keymap[i], idev->keybit); -+ kp->keymap[i] = pdata->keymap[i]; -+ } else { -+ kp->keymap[i] = -1; -+ mask |= 1 << i; -+ } -+ } -+ -+ if (pdata->kp_rep) -+ set_bit(EV_REP, idev->evbit); -+ -+ kp->idev = idev; -+ -+ tsc2301_kp_setup_spi_xfer(tsc); -+ -+ r = device_create_file(&tsc->spi->dev, &dev_attr_disable_kp); -+ if (r < 0) -+ goto err2; -+ -+ tsc2301_kp_start_scan(tsc); -+ -+ /* IRQ mode 0 is faulty, it can cause the KBIRQ to get stuck. -+ * Mode 2 deasserts the IRQ at: -+ * - HW or SW reset -+ * - Setting SCS flag in REG_KEY register -+ * - Releasing all keys -+ * - Reading the REG_KPDATA -+ */ -+ tsc2301_write_kbc(tsc, 2); -+ -+ tsc2301_write_reg(tsc, TSC2301_REG_KPMASK, mask); -+ kp->mask = mask; -+ -+ irq_set_irq_type(kp->irq, IRQ_TYPE_EDGE_FALLING); -+ -+ r = request_irq(kp->irq, tsc2301_kp_irq_handler, 0, -+ "tsc2301-kp", tsc); -+ if (r < 0) { -+ dev_err(&tsc->spi->dev, "unable to get kbirq IRQ"); -+ goto err3; -+ } -+ irq_set_irq_wake(kp->irq, 1); -+ -+ /* We need to read the register once..? */ -+ tsc2301_read_reg(tsc, TSC2301_REG_KPDATA); -+ -+ r = input_register_device(idev); -+ if (r < 0) { -+ dev_err(&tsc->spi->dev, "can't register keypad device\n"); -+ goto err4; -+ } -+ -+ return 0; -+ -+err4: -+ free_irq(kp->irq, tsc); -+err3: -+ tsc2301_kp_stop_scan(tsc); -+ device_remove_file(&tsc->spi->dev, &dev_attr_disable_kp); -+err2: -+ input_free_device(kp->idev); -+err1: -+ kfree(kp); -+ return r; -+} -+ -+void __devexit tsc2301_kp_exit(struct tsc2301 *tsc) -+{ -+ struct tsc2301_kp *kp = tsc->kp; -+ -+ tsc2301_kp_disable(tsc, 1); -+ input_unregister_device(kp->idev); -+ free_irq(kp->irq, tsc); -+ device_remove_file(&tsc->spi->dev, &dev_attr_disable_kp); -+ -+ kfree(kp); -+} ---- a/drivers/input/touchscreen/Kconfig -+++ b/drivers/input/touchscreen/Kconfig -@@ -726,6 +726,12 @@ config TOUCHSCREEN_TSC2007 - To compile this driver as a module, choose M here: the - module will be called tsc2007. - -+config TOUCHSCREEN_TSC2301 -+ tristate "TSC2301 touchscreen support" -+ depends on SPI_TSC2301 -+ help -+ Say Y here for if you are using the touchscreen features of TSC2301. -+ - config TOUCHSCREEN_W90X900 - tristate "W90P910 touchscreen driver" - depends on HAVE_CLK ---- a/drivers/input/touchscreen/Makefile -+++ b/drivers/input/touchscreen/Makefile -@@ -52,6 +52,7 @@ obj-$(CONFIG_TOUCHSCREEN_TOUCHWIN) += to - obj-$(CONFIG_TOUCHSCREEN_TSC_SERIO) += tsc40.o - obj-$(CONFIG_TOUCHSCREEN_TSC2005) += tsc2005.o - obj-$(CONFIG_TOUCHSCREEN_TSC2007) += tsc2007.o -+obj-$(CONFIG_TOUCHSCREEN_TSC2301) += tsc2301_ts.o - obj-$(CONFIG_TOUCHSCREEN_UCB1400) += ucb1400_ts.o - obj-$(CONFIG_TOUCHSCREEN_WACOM_W8001) += wacom_w8001.o - obj-$(CONFIG_TOUCHSCREEN_WM831X) += wm831x-ts.o ---- /dev/null -+++ b/drivers/input/touchscreen/tsc2301_ts.c -@@ -0,0 +1,676 @@ -+/* -+ * TSC2301 touchscreen driver -+ * -+ * Copyright (C) 2005-2008 Nokia Corporation -+ * -+ * Written by Jarkko Oikarinen, Imre Deak and Juha Yrjola -+ * -+ * 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. -+ * -+ * This program is distributed in the hope that it will be useful, -+ * but WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -+ * GNU General Public License for more details. -+ * -+ * You should have received a copy of the GNU General Public License -+ * along with this program; if not, write to the Free Software -+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA -+ * -+ */ -+ -+#include <linux/kernel.h> -+#include <linux/module.h> -+#include <linux/input.h> -+#include <linux/interrupt.h> -+#include <linux/delay.h> -+#include <linux/spi/spi.h> -+ -+#include <linux/spi/tsc2301.h> -+ -+/** -+ * The touchscreen interface operates as follows: -+ * -+ * Initialize: -+ * Request access to GPIO103 (DAV) -+ * tsc2301_ts_irq_handler will trigger when DAV line goes down -+ * -+ * 1) Pen is pressed against touchscreeen -+ * 2) TSC2301 performs AD conversion -+ * 3) After the conversion is done TSC2301 drives DAV line down -+ * 4) GPIO IRQ is received and tsc2301_ts_irq_handler is called -+ * 5) tsc2301_ts_irq_handler queues up an spi transfer to fetch -+ * the x, y, z1, z2 values -+ * 6) SPI framework calls tsc2301_ts_rx after the coordinates are read -+ * 7) When the penup_timer expires, there have not been DAV interrupts -+ * during the last 20ms which means the pen has been lifted. -+ */ -+ -+ -+#define TSC2301_TOUCHSCREEN_PRODUCT_ID 0x0052 -+#define TSC2301_TOUCHSCREEN_PRODUCT_VERSION 0x0001 -+ -+#define TSC2301_TS_PENUP_TIME 20 -+ -+#define TSC2301_ADCREG_CONVERSION_CTRL_BY_TSC2301 0x8000 -+#define TSC2301_ADCREG_CONVERSION_CTRL_BY_HOST 0x0000 -+ -+#define TSC2301_ADCREG_FUNCTION_NONE 0x0000 -+#define TSC2301_ADCREG_FUNCTION_XY 0x0400 -+#define TSC2301_ADCREG_FUNCTION_XYZ 0x0800 -+#define TSC2301_ADCREG_FUNCTION_X 0x0C00 -+#define TSC2301_ADCREG_FUNCTION_Y 0x1000 -+#define TSC2301_ADCREG_FUNCTION_Z 0x1400 -+#define TSC2301_ADCREG_FUNCTION_DAT1 0x1800 -+#define TSC2301_ADCREG_FUNCTION_DAT2 0x1C00 -+#define TSC2301_ADCREG_FUNCTION_AUX1 0x2000 -+#define TSC2301_ADCREG_FUNCTION_AUX2 0x2400 -+#define TSC2301_ADCREG_FUNCTION_TEMP 0x2800 -+ -+#define TSC2301_ADCREG_RESOLUTION_8BIT 0x0100 -+#define TSC2301_ADCREG_RESOLUTION_10BIT 0x0200 -+#define TSC2301_ADCREG_RESOLUTION_12BIT 0x0300 -+ -+#define TSC2301_ADCREG_AVERAGING_NONE 0x0000 -+#define TSC2301_ADCREG_AVERAGING_4AVG 0x0040 -+#define TSC2301_ADCREG_AVERAGING_8AVG 0x0080 -+#define TSC2301_ADCREG_AVERAGING_16AVG 0x00C0 -+ -+#define TSC2301_ADCREG_CLOCK_8MHZ 0x0000 -+#define TSC2301_ADCREG_CLOCK_4MHZ 0x0010 -+#define TSC2301_ADCREG_CLOCK_2MHZ 0x0020 -+#define TSC2301_ADCREG_CLOCK_1MHZ 0x0030 -+ -+#define TSC2301_ADCREG_VOLTAGE_STAB_0US 0x0000 -+#define TSC2301_ADCREG_VOLTAGE_STAB_100US 0x0002 -+#define TSC2301_ADCREG_VOLTAGE_STAB_500US 0x0004 -+#define TSC2301_ADCREG_VOLTAGE_STAB_1MS 0x0006 -+#define TSC2301_ADCREG_VOLTAGE_STAB_5MS 0x0008 -+#define TSC2301_ADCREG_VOLTAGE_STAB_10MS 0x000A -+#define TSC2301_ADCREG_VOLTAGE_STAB_50MS 0x000C -+#define TSC2301_ADCREG_VOLTAGE_STAB_100MS 0x000E -+ -+#define TSC2301_ADCREG_STOP_CONVERSION 0x4000 -+ -+#define MAX_12BIT ((1 << 12) - 1) -+ -+#define TS_RECT_SIZE 8 -+#define TSF_MIN_Z1 100 -+#define TSF_MAX_Z2 4000 -+ -+#define TSF_SAMPLES 4 -+ -+struct ts_filter { -+ int sample_cnt; -+ -+ int avg_x; -+ int avg_y; -+ int avg_z1; -+ int avg_z2; -+}; -+ -+struct ts_coords { -+ u16 x; -+ u16 y; -+ u16 z1; -+ u16 z2; -+}; -+ -+struct tsc2301_ts { -+ struct input_dev *idev; -+ char phys[32]; -+ struct timer_list penup_timer; -+ struct mutex mutex; -+ -+ struct spi_transfer read_xfer[2]; -+ struct spi_message read_msg; -+ struct ts_coords *coords; -+ -+ struct ts_filter filter; -+ -+ int hw_avg_max; -+ u16 x; -+ u16 y; -+ u16 p; -+ -+ u16 x_plate_ohm; -+ int stab_time; -+ int max_pressure; -+ int touch_pressure; -+ -+ u8 event_sent; -+ u8 pen_down; -+ u8 disabled; -+ u8 disable_depth; -+ -+ int hw_flags; -+ int irq; -+}; -+ -+ -+static const u16 tsc2301_ts_read_data = 0x8000 | TSC2301_REG_X; -+ -+static int tsc2301_ts_check_config(struct tsc2301_ts *ts, int *hw_flags) -+{ -+ int flags; -+ -+ flags = 0; -+ switch (ts->hw_avg_max) { -+ case 0: -+ flags |= TSC2301_ADCREG_AVERAGING_NONE; -+ break; -+ case 4: -+ flags |= TSC2301_ADCREG_AVERAGING_4AVG; -+ break; -+ case 8: -+ flags |= TSC2301_ADCREG_AVERAGING_8AVG; -+ break; -+ case 16: -+ flags |= TSC2301_ADCREG_AVERAGING_16AVG; -+ break; -+ default: -+ return -EINVAL; -+ } -+ -+ switch (ts->stab_time) { -+ case 0: -+ flags |= TSC2301_ADCREG_VOLTAGE_STAB_0US; -+ break; -+ case 100: -+ flags |= TSC2301_ADCREG_VOLTAGE_STAB_100US; -+ break; -+ case 500: -+ flags |= TSC2301_ADCREG_VOLTAGE_STAB_500US; -+ break; -+ case 1000: -+ flags |= TSC2301_ADCREG_VOLTAGE_STAB_1MS; -+ break; -+ case 5000: -+ flags |= TSC2301_ADCREG_VOLTAGE_STAB_5MS; -+ break; -+ case 10000: -+ flags |= TSC2301_ADCREG_VOLTAGE_STAB_10MS; -+ break; -+ case 50000: -+ flags |= TSC2301_ADCREG_VOLTAGE_STAB_50MS; -+ break; -+ case 100000: -+ flags |= TSC2301_ADCREG_VOLTAGE_STAB_100MS; -+ break; -+ default: -+ return -EINVAL; -+ } -+ -+ *hw_flags = flags; -+ return 0; -+} -+ -+/* -+ * This odd three-time initialization is to work around a bug in TSC2301. -+ * See TSC2301 errata for details. -+ */ -+static int tsc2301_ts_configure(struct tsc2301 *tsc, int flags) -+{ -+ struct spi_transfer xfer[5]; -+ struct spi_transfer *x; -+ struct spi_message m; -+ int i; -+ u16 val1, val2, val3; -+ u16 data[10]; -+ -+ val1 = TSC2301_ADCREG_CONVERSION_CTRL_BY_HOST | -+ TSC2301_ADCREG_STOP_CONVERSION | -+ TSC2301_ADCREG_FUNCTION_NONE | -+ TSC2301_ADCREG_RESOLUTION_12BIT | -+ TSC2301_ADCREG_AVERAGING_NONE | -+ TSC2301_ADCREG_CLOCK_2MHZ | -+ TSC2301_ADCREG_VOLTAGE_STAB_100MS; -+ -+ val2 = TSC2301_ADCREG_CONVERSION_CTRL_BY_HOST | -+ TSC2301_ADCREG_FUNCTION_XYZ | -+ TSC2301_ADCREG_RESOLUTION_12BIT | -+ TSC2301_ADCREG_AVERAGING_16AVG | -+ TSC2301_ADCREG_CLOCK_1MHZ | -+ TSC2301_ADCREG_VOLTAGE_STAB_100MS; -+ -+ /* Averaging and voltage stabilization settings in flags */ -+ val3 = TSC2301_ADCREG_CONVERSION_CTRL_BY_TSC2301 | -+ TSC2301_ADCREG_FUNCTION_XYZ | -+ TSC2301_ADCREG_RESOLUTION_12BIT | -+ TSC2301_ADCREG_CLOCK_2MHZ | -+ flags; -+ -+ /* Now we prepare the command for transferring */ -+ data[0] = TSC2301_REG_ADC; -+ data[1] = val1; -+ data[2] = TSC2301_REG_ADC; -+ data[3] = val2; -+ data[4] = TSC2301_REG_ADC; -+ data[5] = val3; -+ data[6] = TSC2301_REG_REF; -+ data[7] = 1 << 4 | 1 << 2 | 1; /* intref, 100uS settl, 2.5V ref */ -+ data[8] = TSC2301_REG_CONFIG; -+ data[9] = 3 << 3 | 2 << 0; /* 340uS pre-chrg, 544us delay */ -+ -+ spi_message_init(&m); -+ m.spi = tsc->spi; -+ -+ memset(xfer, 0, sizeof(xfer)); -+ x = &xfer[0]; -+ -+ for (i = 0; i < 10; i += 2) { -+ x->tx_buf = &data[i]; -+ x->len = 4; -+ if (i != 8) -+ x->cs_change = 1; -+ spi_message_add_tail(x, &m); -+ x++; -+ } -+ spi_sync(m.spi, &m); -+ -+ return 0; -+} -+ -+static void tsc2301_ts_start_scan(struct tsc2301 *tsc) -+{ -+ tsc2301_ts_configure(tsc, tsc->ts->hw_flags); -+ tsc2301_kp_restart(tsc); -+} -+ -+static void tsc2301_ts_stop_scan(struct tsc2301 *tsc) -+{ -+ tsc2301_write_reg(tsc, TSC2301_REG_ADC, TSC2301_ADCREG_STOP_CONVERSION); -+ tsc2301_kp_restart(tsc); -+} -+ -+static void update_pen_state(struct tsc2301_ts *ts, int x, int y, int pressure) -+{ -+ if (pressure) { -+ input_report_abs(ts->idev, ABS_X, x); -+ input_report_abs(ts->idev, ABS_Y, y); -+ input_report_abs(ts->idev, ABS_PRESSURE, pressure); -+ if (!ts->pen_down) -+ input_report_key(ts->idev, BTN_TOUCH, 1); -+ ts->pen_down = 1; -+ } else { -+ input_report_abs(ts->idev, ABS_PRESSURE, 0); -+ if (ts->pen_down) -+ input_report_key(ts->idev, BTN_TOUCH, 0); -+ ts->pen_down = 0; -+ } -+ -+ input_sync(ts->idev); -+ -+#ifdef VERBOSE -+ dev_dbg(&tsc->spi->dev, "x %4d y %4d p %4d\n", x, y, pressure); -+#endif -+} -+ -+static int filter(struct tsc2301_ts *ts, int x, int y, int z1, int z2) -+{ -+ int inside_rect, pressure_limit, Rt; -+ struct ts_filter *tsf = &ts->filter; -+ -+ /* validate pressure and position */ -+ if (x > MAX_12BIT || y > MAX_12BIT) -+ return 0; -+ -+ /* skip coords if the pressure-components are out of range */ -+ if (z1 < TSF_MIN_Z1 || z2 > TSF_MAX_Z2) -+ return 0; -+ -+ /* Use the x,y,z1,z2 directly on the first "pen down" event */ -+ if (ts->event_sent) { -+ tsf->avg_x += x; -+ tsf->avg_y += y; -+ tsf->avg_z1 += z1; -+ tsf->avg_z2 += z2; -+ -+ if (++tsf->sample_cnt < TSF_SAMPLES) -+ return 0; -+ x = tsf->avg_x / TSF_SAMPLES; -+ y = tsf->avg_y / TSF_SAMPLES; -+ z1 = tsf->avg_z1 / TSF_SAMPLES; -+ z2 = tsf->avg_z2 / TSF_SAMPLES; -+ } -+ tsf->sample_cnt = 0; -+ tsf->avg_x = 0; -+ tsf->avg_y = 0; -+ tsf->avg_z1 = 0; -+ tsf->avg_z2 = 0; -+ -+ pressure_limit = ts->event_sent? ts->max_pressure: ts->touch_pressure; -+ -+ /* z1 is always at least 100: */ -+ Rt = x * (z2 - z1) / z1; -+ Rt = Rt * ts->x_plate_ohm / 4096; -+ if (Rt > pressure_limit) -+ return 0; -+ -+ /* discard the event if it still is within the previous rect - unless -+ * if the pressure is harder, but then use previous x,y position */ -+ inside_rect = ( -+ x > (int)ts->x - TS_RECT_SIZE && x < (int)ts->x + TS_RECT_SIZE && -+ y > (int)ts->y - TS_RECT_SIZE && y < (int)ts->y + TS_RECT_SIZE); -+ -+ if (!ts->event_sent || !inside_rect) { -+ ts->x = x; -+ ts->y = y; -+ ts->p = Rt; -+ return 1; -+ } else if (Rt < ts->p) { -+ ts->p = Rt; -+ return 1; -+ } -+ return 0; -+} -+ -+/* -+ * This procedure is called by the SPI framework after the coordinates -+ * have been read from TSC2301 -+ */ -+static void tsc2301_ts_rx(void *arg) -+{ -+ struct tsc2301 *tsc = arg; -+ struct tsc2301_ts *ts = tsc->ts; -+ int send_event; -+ int x, y, z1, z2; -+ -+ x = ts->coords->x; -+ y = ts->coords->y; -+ z1 = ts->coords->z1; -+ z2 = ts->coords->z2; -+ -+ send_event = filter(ts, x, y, z1, z2); -+ if (send_event) { -+ update_pen_state(ts, ts->x, ts->y, ts->p); -+ ts->event_sent = 1; -+ } -+ -+ mod_timer(&ts->penup_timer, -+ jiffies + msecs_to_jiffies(TSC2301_TS_PENUP_TIME)); -+} -+ -+/* -+ * Timer is called TSC2301_TS_PENUP_TIME after pen is up -+ */ -+static void tsc2301_ts_timer_handler(unsigned long data) -+{ -+ struct tsc2301 *tsc = (struct tsc2301 *)data; -+ struct tsc2301_ts *ts = tsc->ts; -+ -+ if (ts->event_sent) { -+ ts->event_sent = 0; -+ update_pen_state(ts, 0, 0, 0); -+ } -+} -+ -+/* -+ * This interrupt is called when pen is down and coordinates are -+ * available. That is indicated by a falling edge on DEV line. -+ */ -+static irqreturn_t tsc2301_ts_irq_handler(int irq, void *dev_id) -+{ -+ struct tsc2301 *tsc = dev_id; -+ struct tsc2301_ts *ts = tsc->ts; -+ int r; -+ -+ r = spi_async(tsc->spi, &ts->read_msg); -+ if (r) -+ dev_err(&tsc->spi->dev, "ts: spi_async() failed"); -+ -+ mod_timer(&ts->penup_timer, -+ jiffies + msecs_to_jiffies(TSC2301_TS_PENUP_TIME)); -+ -+ return IRQ_HANDLED; -+} -+ -+static void tsc2301_ts_disable(struct tsc2301 *tsc) -+{ -+ struct tsc2301_ts *ts = tsc->ts; -+ -+ if (ts->disable_depth++ != 0) -+ return; -+ -+ disable_irq(ts->irq); -+ -+ /* wait until penup timer expire normally */ -+ do { -+ msleep(1); -+ } while (ts->event_sent); -+ -+ tsc2301_ts_stop_scan(tsc); -+} -+ -+static void tsc2301_ts_enable(struct tsc2301 *tsc) -+{ -+ struct tsc2301_ts *ts = tsc->ts; -+ -+ if (--ts->disable_depth != 0) -+ return; -+ -+ enable_irq(ts->irq); -+ -+ tsc2301_ts_start_scan(tsc); -+} -+ -+#ifdef CONFIG_PM -+int tsc2301_ts_suspend(struct tsc2301 *tsc) -+{ -+ struct tsc2301_ts *ts = tsc->ts; -+ -+ mutex_lock(&ts->mutex); -+ tsc2301_ts_disable(tsc); -+ mutex_unlock(&ts->mutex); -+ -+ return 0; -+} -+ -+void tsc2301_ts_resume(struct tsc2301 *tsc) -+{ -+ struct tsc2301_ts *ts = tsc->ts; -+ -+ mutex_lock(&ts->mutex); -+ tsc2301_ts_enable(tsc); -+ mutex_unlock(&ts->mutex); -+} -+#endif -+ -+static void tsc2301_ts_setup_spi_xfer(struct tsc2301 *tsc) -+{ -+ struct tsc2301_ts *ts = tsc->ts; -+ struct spi_message *m = &ts->read_msg; -+ struct spi_transfer *x = &ts->read_xfer[0]; -+ -+ spi_message_init(m); -+ -+ x->tx_buf = &tsc2301_ts_read_data; -+ x->len = 2; -+ spi_message_add_tail(x, m); -+ -+ x++; -+ x->rx_buf = ts->coords; -+ x->len = 8; -+ spi_message_add_tail(x, m); -+ -+ m->complete = tsc2301_ts_rx; -+ m->context = tsc; -+} -+ -+static ssize_t tsc2301_ts_pen_down_show(struct device *dev, -+ struct device_attribute *attr, -+ char *buf) -+{ -+ struct tsc2301 *tsc = dev_get_drvdata(dev); -+ -+ return sprintf(buf, "%u\n", tsc->ts->pen_down); -+} -+ -+static DEVICE_ATTR(pen_down, S_IRUGO, tsc2301_ts_pen_down_show, NULL); -+ -+static ssize_t tsc2301_ts_disable_show(struct device *dev, -+ struct device_attribute *attr, char *buf) -+{ -+ struct tsc2301 *tsc = dev_get_drvdata(dev); -+ struct tsc2301_ts *ts = tsc->ts; -+ -+ return sprintf(buf, "%u\n", ts->disabled); -+} -+ -+static ssize_t tsc2301_ts_disable_store(struct device *dev, -+ struct device_attribute *attr, -+ const char *buf, size_t count) -+{ -+ struct tsc2301 *tsc = dev_get_drvdata(dev); -+ struct tsc2301_ts *ts = tsc->ts; -+ char *endp; -+ int i; -+ -+ i = simple_strtoul(buf, &endp, 10); -+ i = i ? 1 : 0; -+ mutex_lock(&ts->mutex); -+ if (i == ts->disabled) goto out; -+ ts->disabled = i; -+ -+ if (i) -+ tsc2301_ts_disable(tsc); -+ else -+ tsc2301_ts_enable(tsc); -+out: -+ mutex_unlock(&ts->mutex); -+ return count; -+} -+ -+static DEVICE_ATTR(disable_ts, 0664, tsc2301_ts_disable_show, -+ tsc2301_ts_disable_store); -+ -+int __devinit tsc2301_ts_init(struct tsc2301 *tsc, -+ struct tsc2301_platform_data *pdata) -+{ -+ struct tsc2301_ts *ts; -+ struct input_dev *idev; -+ int r; -+ int x_max, y_max; -+ int x_fudge, y_fudge, p_fudge; -+ -+ if (pdata->dav_int <= 0) { -+ dev_err(&tsc->spi->dev, "need DAV IRQ"); -+ return -EINVAL; -+ } -+ -+ ts = kzalloc(sizeof(*ts), GFP_KERNEL); -+ if (ts == NULL) -+ return -ENOMEM; -+ tsc->ts = ts; -+ -+ ts->coords = kzalloc(sizeof(*ts->coords), GFP_KERNEL); -+ if (ts->coords == NULL) { -+ kfree(ts); -+ return -ENOMEM; -+ } -+ -+ ts->irq = pdata->dav_int; -+ -+ init_timer(&ts->penup_timer); -+ setup_timer(&ts->penup_timer, tsc2301_ts_timer_handler, -+ (unsigned long)tsc); -+ -+ mutex_init(&ts->mutex); -+ -+ ts->x_plate_ohm = pdata->ts_x_plate_ohm ? : 280; -+ ts->hw_avg_max = pdata->ts_hw_avg; -+ ts->max_pressure = pdata->ts_max_pressure ? : MAX_12BIT; -+ ts->touch_pressure = pdata->ts_touch_pressure ? : ts->max_pressure; -+ ts->stab_time = pdata->ts_stab_time; -+ -+ x_max = pdata->ts_x_max ? : 4096; -+ y_max = pdata->ts_y_max ? : 4096; -+ x_fudge = pdata->ts_x_fudge ? : 4; -+ y_fudge = pdata->ts_y_fudge ? : 8; -+ p_fudge = pdata->ts_pressure_fudge ? : 2; -+ -+ if ((r = tsc2301_ts_check_config(ts, &ts->hw_flags))) { -+ dev_err(&tsc->spi->dev, "invalid configuration\n"); -+ goto err2; -+ } -+ -+ idev = input_allocate_device(); -+ if (idev == NULL) { -+ r = -ENOMEM; -+ goto err2; -+ } -+ idev->name = "TSC2301 touchscreen"; -+ snprintf(ts->phys, sizeof(ts->phys), -+ "%s/input-ts", dev_name(&tsc->spi->dev)); -+ idev->phys = ts->phys; -+ idev->dev.parent = &tsc->spi->dev; -+ -+ idev->evbit[0] = BIT(EV_ABS) | BIT(EV_KEY); -+ idev->absbit[0] = BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_PRESSURE); -+ ts->idev = idev; -+ -+ tsc2301_ts_setup_spi_xfer(tsc); -+ -+ /* These parameters should perhaps be configurable? */ -+ input_set_abs_params(idev, ABS_X, 0, x_max, x_fudge, 0); -+ input_set_abs_params(idev, ABS_Y, 0, y_max, y_fudge, 0); -+ input_set_abs_params(idev, ABS_PRESSURE, 0, ts->max_pressure, -+ p_fudge, 0); -+ -+ tsc2301_ts_start_scan(tsc); -+ -+ r = request_irq(ts->irq, tsc2301_ts_irq_handler, -+ IRQF_TRIGGER_FALLING, -+ "tsc2301-ts", tsc); -+ if (r < 0) { -+ dev_err(&tsc->spi->dev, "unable to get DAV IRQ"); -+ goto err3; -+ } -+ irq_set_irq_wake(ts->irq, 1); -+ -+ if (device_create_file(&tsc->spi->dev, &dev_attr_pen_down) < 0) -+ goto err4; -+ if (device_create_file(&tsc->spi->dev, &dev_attr_disable_ts) < 0) -+ goto err5; -+ -+ r = input_register_device(idev); -+ if (r < 0) { -+ dev_err(&tsc->spi->dev, "can't register touchscreen device\n"); -+ goto err6; -+ } -+ -+ return 0; -+err6: -+ device_remove_file(&tsc->spi->dev, &dev_attr_disable_ts); -+err5: -+ device_remove_file(&tsc->spi->dev, &dev_attr_pen_down); -+err4: -+ free_irq(ts->irq, tsc); -+err3: -+ tsc2301_ts_stop_scan(tsc); -+ input_free_device(idev); -+err2: -+ kfree(ts->coords); -+ kfree(ts); -+ return r; -+} -+ -+void __devexit tsc2301_ts_exit(struct tsc2301 *tsc) -+{ -+ struct tsc2301_ts *ts = tsc->ts; -+ -+ tsc2301_ts_disable(tsc); -+ -+ device_remove_file(&tsc->spi->dev, &dev_attr_disable_ts); -+ device_remove_file(&tsc->spi->dev, &dev_attr_pen_down); -+ -+ free_irq(ts->irq, tsc); -+ input_unregister_device(ts->idev); -+ -+ kfree(ts->coords); -+ kfree(ts); -+} -+MODULE_AUTHOR("Jarkko Oikarinen <jarkko.oikarinen@nokia.com>"); -+MODULE_LICENSE("GPL"); ---- a/drivers/spi/Kconfig -+++ b/drivers/spi/Kconfig -@@ -433,6 +433,28 @@ config SPI_TLE62X0 - sysfs interface, with each line presented as a kind of GPIO - exposing both switch control and diagnostic feedback. - -+config SPI_TSC2301 -+ tristate "TSC2301 driver" -+ depends on SPI_MASTER -+ help -+ Say Y here if you have a TSC2301 chip connected to an SPI -+ bus on your board. -+ -+ The TSC2301 is a highly integrated PDA analog interface circuit. -+ It contains a complete 12-bit A/D resistive touch screen -+ converter (ADC) including drivers, touch pressure measurement -+ capability, keypad controller, and 8-bit D/A converter (DAC) output -+ for LCD contrast control. -+ -+ To compile this driver as a module, choose M here: the -+ module will be called tsc2301. -+ -+config SPI_TSC2301_AUDIO -+ boolean "TSC2301 audio support" -+ depends on SPI_TSC2301 && SND -+ help -+ Say Y here for if you are using the audio features of TSC2301. -+ - # - # Add new SPI protocol masters in alphabetical order above this line - # ---- a/drivers/spi/Makefile -+++ b/drivers/spi/Makefile -@@ -59,4 +59,6 @@ obj-$(CONFIG_SPI_TLE62X0) += spi-tle62x - obj-$(CONFIG_SPI_TOPCLIFF_PCH) += spi-topcliff-pch.o - obj-$(CONFIG_SPI_TXX9) += spi-txx9.o - obj-$(CONFIG_SPI_XILINX) += spi-xilinx.o -- -+obj-$(CONFIG_SPI_TSC2301) += tsc2301.o -+tsc2301-objs := tsc2301-core.o -+tsc2301-$(CONFIG_SPI_TSC2301_AUDIO) += tsc2301-mixer.o ---- /dev/null -+++ b/drivers/spi/tsc2301-core.c -@@ -0,0 +1,297 @@ -+/* -+ * TSC2301 driver -+ * -+ * Copyright (C) 2005, 2006 Nokia Corporation -+ * -+ * 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. -+ * -+ * This program is distributed in the hope that it will be useful, -+ * but WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -+ * GNU General Public License for more details. -+ * -+ * You should have received a copy of the GNU General Public License -+ * along with this program; if not, write to the Free Software -+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA -+ * -+ */ -+ -+#include <linux/module.h> -+#include <linux/device.h> -+#include <linux/delay.h> -+#include <linux/gpio.h> -+#include <linux/spi/spi.h> -+#include <linux/spi/tsc2301.h> -+ -+u16 tsc2301_read_reg(struct tsc2301 *tsc, int reg) -+{ -+ struct spi_transfer t[2]; -+ struct spi_message m; -+ u16 data = 0, cmd; -+ -+ cmd = reg; -+ cmd |= 0x8000; -+ -+ memset(t, 0, sizeof(t)); -+ spi_message_init(&m); -+ m.spi = tsc->spi; -+ -+ t[0].tx_buf = &cmd; -+ t[0].rx_buf = NULL; -+ t[0].len = 2; -+ spi_message_add_tail(&t[0], &m); -+ -+ t[1].tx_buf = NULL; -+ t[1].rx_buf = &data; -+ t[1].len = 2; -+ spi_message_add_tail(&t[1], &m); -+ -+ spi_sync(m.spi, &m); -+ -+ return data; -+} -+ -+void tsc2301_write_reg(struct tsc2301 *tsc, int reg, u16 val) -+{ -+ struct spi_transfer t; -+ struct spi_message m; -+ u16 data[2]; -+ -+ /* Now we prepare the command for transferring */ -+ data[0] = reg; -+ data[1] = val; -+ -+ spi_message_init(&m); -+ m.spi = tsc->spi; -+ -+ memset(&t, 0, sizeof(t)); -+ t.tx_buf = data; -+ t.rx_buf = NULL; -+ t.len = 4; -+ spi_message_add_tail(&t, &m); -+ -+ spi_sync(m.spi, &m); -+} -+ -+void tsc2301_write_kbc(struct tsc2301 *tsc, int val) -+{ -+ u16 w; -+ -+ w = tsc->config2_shadow; -+ w &= ~(0x03 << 14); -+ w |= (val & 0x03) << 14; -+ tsc2301_write_reg(tsc, TSC2301_REG_CONFIG2, w); -+ tsc->config2_shadow = w; -+} -+ -+void tsc2301_write_pll(struct tsc2301 *tsc, -+ int pll_n, int pll_a, int pll_pdc, int pct_e, int pll_o) -+{ -+ u16 w; -+ -+ w = tsc->config2_shadow; -+ w &= ~0x3fff; -+ w |= (pll_n & 0x0f) | ((pll_a & 0x0f) << 4) | ((pll_pdc & 0x0f) << 8); -+ w |= pct_e ? (1 << 12) : 0; -+ w |= pll_o ? (1 << 13) : 0; -+ tsc2301_write_reg(tsc, TSC2301_REG_CONFIG2, w); -+ tsc->config2_shadow = w; -+} -+ -+void tsc2301_read_buf(struct tsc2301 *tsc, int reg, u16 *rx_buf, int len) -+{ -+ struct spi_transfer t[2]; -+ struct spi_message m; -+ u16 cmd, i; -+ -+ cmd = reg; -+ cmd |= 0x8000; -+ -+ spi_message_init(&m); -+ m.spi = tsc->spi; -+ -+ memset(t, 0, sizeof(t)); -+ t[0].tx_buf = &cmd; -+ t[0].rx_buf = NULL; -+ t[0].len = 2; -+ spi_message_add_tail(&t[0], &m); -+ -+ t[1].tx_buf = NULL; -+ t[1].rx_buf = rx_buf; -+ t[1].len = 2 * len; -+ spi_message_add_tail(&t[1], &m); -+ -+ spi_sync(m.spi, &m); -+ -+ for (i = 0; i < len; i++) -+ printk(KERN_DEBUG "rx_buf[%d]: %04x\n", i, rx_buf[i]); -+} -+ -+static int __devinit tsc2301_probe(struct spi_device *spi) -+{ -+ struct tsc2301 *tsc; -+ struct tsc2301_platform_data *pdata = spi->dev.platform_data; -+ int r; -+ u16 w; -+ -+ if (!pdata) { -+ dev_dbg(&spi->dev, "no platform data?\n"); -+ return -ENODEV; -+ } -+ -+ tsc = kzalloc(sizeof(*tsc), GFP_KERNEL); -+ if (tsc == NULL) -+ return -ENOMEM; -+ -+ dev_set_drvdata(&spi->dev, tsc); -+ tsc->spi = spi; -+ -+ tsc->enable_clock = pdata->enable_clock; -+ tsc->disable_clock = pdata->disable_clock; -+ -+ if (pdata->reset_gpio >= 0) { -+ tsc->reset_gpio = pdata->reset_gpio; -+ r = gpio_request(tsc->reset_gpio, "TSC2301 reset"); -+ if (r < 0) -+ goto err1; -+ gpio_direction_output(tsc->reset_gpio, 1); -+ mdelay(1); -+ gpio_set_value(tsc->reset_gpio, 0); -+ } else -+ tsc->reset_gpio = -1; -+ -+ spi->mode = SPI_MODE_1; -+ spi->bits_per_word = 16; -+ /* The max speed might've been defined by the board-specific -+ * struct */ -+ if (!spi->max_speed_hz) -+ spi->max_speed_hz = TSC2301_HZ; -+ spi_setup(spi); -+ -+ /* Soft reset */ -+ tsc2301_write_reg(tsc, TSC2301_REG_RESET, 0xbb00); -+ msleep(1); -+ -+ w = tsc2301_read_reg(tsc, TSC2301_REG_ADC); -+ if (!(w & (1 << 14))) { -+ dev_err(&spi->dev, "invalid ADC reg value: %04x\n", w); -+ r = -ENODEV; -+ goto err1; -+ } -+ -+ w = tsc2301_read_reg(tsc, TSC2301_REG_DAC); -+ if (!(w & (1 << 15))) { -+ dev_err(&spi->dev, "invalid DAC reg value: %04x\n", w); -+ r = -ENODEV; -+ goto err1; -+ } -+ -+ /* Stop keypad scanning */ -+ tsc2301_write_reg(tsc, TSC2301_REG_KEY, 0x4000); -+ -+ /* We have to cache this for read-modify-write, since we can't -+ * read back BIT15 */ -+ w = tsc2301_read_reg(tsc, TSC2301_REG_CONFIG2); -+ /* By default BIT15 is set */ -+ w |= 1 << 15; -+ tsc->config2_shadow = w; -+ -+ r = tsc2301_kp_init(tsc, pdata); -+ if (r) -+ goto err1; -+ r = tsc2301_ts_init(tsc, pdata); -+ if (r) -+ goto err2; -+ r = tsc2301_mixer_init(tsc, pdata); -+ if (r) -+ goto err3; -+ return 0; -+ -+err3: -+ tsc2301_ts_exit(tsc); -+err2: -+ tsc2301_kp_exit(tsc); -+err1: -+ kfree(tsc); -+ return r; -+} -+ -+static int __devexit tsc2301_remove(struct spi_device *spi) -+{ -+ struct tsc2301 *tsc = dev_get_drvdata(&spi->dev); -+ -+ tsc2301_mixer_exit(tsc); -+ tsc2301_ts_exit(tsc); -+ tsc2301_kp_exit(tsc); -+ if (tsc->reset_gpio >= 0) -+ gpio_free(tsc->reset_gpio); -+ kfree(tsc); -+ -+ return 0; -+} -+ -+#ifdef CONFIG_PM -+static int tsc2301_suspend(struct spi_device *spi, pm_message_t mesg) -+{ -+ struct tsc2301 *tsc = dev_get_drvdata(&spi->dev); -+ int r; -+ -+ if ((r = tsc2301_mixer_suspend(tsc)) < 0) -+ return r; -+ if ((r = tsc2301_kp_suspend(tsc)) < 0) -+ goto err1; -+ if ((r = tsc2301_ts_suspend(tsc)) < 0) -+ goto err2; -+ -+ return 0; -+err2: -+ tsc2301_kp_resume(tsc); -+err1: -+ tsc2301_mixer_resume(tsc); -+ return r; -+} -+ -+static int tsc2301_resume(struct spi_device *spi) -+{ -+ struct tsc2301 *tsc = dev_get_drvdata(&spi->dev); -+ -+ tsc2301_ts_resume(tsc); -+ tsc2301_kp_resume(tsc); -+ tsc2301_mixer_resume(tsc); -+ return 0; -+} -+#endif -+ -+static struct spi_driver tsc2301_driver = { -+ .driver = { -+ .name = "tsc2301", -+ .bus = &spi_bus_type, -+ .owner = THIS_MODULE, -+ }, -+#ifdef CONFIG_PM -+ .suspend = tsc2301_suspend, -+ .resume = tsc2301_resume, -+#endif -+ .probe = tsc2301_probe, -+ .remove = __devexit_p(tsc2301_remove), -+}; -+ -+static int __init tsc2301_init(void) -+{ -+ printk("TSC2301 driver initializing\n"); -+ -+ return spi_register_driver(&tsc2301_driver); -+} -+module_init(tsc2301_init); -+ -+static void __exit tsc2301_exit(void) -+{ -+ spi_unregister_driver(&tsc2301_driver); -+} -+module_exit(tsc2301_exit); -+ -+MODULE_AUTHOR("Juha Yrjölä <juha.yrjola@nokia.com>"); -+MODULE_LICENSE("GPL"); ---- /dev/null -+++ b/drivers/spi/tsc2301-mixer.c -@@ -0,0 +1,1003 @@ -+/* -+ * ALSA Mixer implementation for TSC2301 -+ * -+ * Copyright (C) 2006 Nokia Corporation. -+ * -+ * Contact: Jarkko Nikula <jarkko.nikula@nokia.com> -+ * Juha Yrjola -+ * -+ * Some notes about TSC2301: -+ * - PLL will stop when DAC and ADC's are powered down. -+ * - Touchscreen will stop working when audio part is powered up and if audio -+ * MCLK is stopped. Problem is avoided if audio is powered down before -+ * stopping MCLK. -+ * - Audio DAC or audio outputs will activate only after 100 msec from the -+ * chip power-up. Reason seems to be VCM since there is no this delay if the -+ * chip and VCM (bit AVPD on PD/MISC) were not powered down. The chip will -+ * consume about 1 mA if all other audio blocks are powered down except the -+ * chip itself and VCM. Full power down consumes only about few uA. -+ * - Power-down transition could happen earliest about 100 msec after the chip -+ * power-up. Otherwise power-down will fail if there is no that 100 msec -+ * on time before it. It's not obvious why is that since chip reports -+ * power-up to be completed and also PLL output on GPIO_0 is active in few -+ * milliseconds. -+ * -+ * This program is free software; you can redistribute it and/or -+ * modify it under the terms of the GNU General Public License -+ * version 2 as published by the Free Software Foundation. -+ * -+ * This program is distributed in the hope that it will be useful, but -+ * WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -+ * General Public License for more details. -+ * -+ * You should have received a copy of the GNU General Public License -+ * along with this program; if not, write to the Free Software -+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA -+ * 02110-1301 USA -+ * -+ */ -+ -+#include <linux/module.h> -+#include <linux/device.h> -+#include <linux/errno.h> -+#include <linux/delay.h> -+#include <linux/slab.h> -+#include <linux/spi/spi.h> -+#include <linux/spi/tsc2301.h> -+ -+#include <sound/core.h> -+#include <sound/control.h> -+ -+/* shadow register indexes */ -+enum { -+ /* audio control and volume registers */ -+ AUDCNTL_INDEX, -+ ADCVOL_INDEX, -+ DACVOL_INDEX, -+ BPVOL_INDEX, -+ /* keyclick control register (not needed here) */ -+ /* audio power control register */ -+ PD_MISC_INDEX, -+ /* TSC2301 GPIO control register */ -+ GPIO_INDEX, -+ -+ SHADOW_REG_COUNT, -+}; -+ -+/* structure for driver private data */ -+struct tsc2301_mixer { -+ struct tsc2301 *tsc; -+ struct mutex mutex; -+ -+ /* shadow registers holding TSC2301 audio registers. Used to hold -+ * their states during the sleep and also to reduce communication with -+ * the chip since get callback functions could get register values -+ * directly from these shadow registers without needing to read them -+ * from the chip */ -+ u16 shadow_regs[SHADOW_REG_COUNT]; -+ -+ /* audio controller driver usage of the ADC and DAC */ -+ unsigned adc_enabled:1, dac_enabled:1; -+ unsigned pll_output:1; -+ unsigned mclk_enabled; -+ -+ /* latest audio power-up timestamp */ -+ unsigned long pu_jiffies; -+ -+ /* these are used when upper layer(s) are going to power-down TSC2301 -+ * before 100 msec is passed from power-up */ -+ struct delayed_work delayed_power_down; -+ unsigned delayed_pd_active:1; -+ -+ int (* platform_init)(struct device *); -+ void (* platform_cleanup)(struct device *); -+ -+ struct tsc2301_mixer_gpio *mixer_gpios; -+ int n_mixer_gpios; -+}; -+ -+#define TSC2301_DAC_DELAY msecs_to_jiffies(100) -+#define TSC2301_MIN_PU_PERIOD msecs_to_jiffies(100) -+ -+#define TSC2301_REG_TO_PVAL(reg) \ -+ (TSC2301_REG_TO_PAGE(reg) << 6 | TSC2301_REG_TO_ADDR(reg)) -+#define TSC2301_PVAL_TO_REG(v) \ -+ (TSC2301_REG((((v) >> 6) & 3),((v) & 0x1f))) -+ -+#define TSC2301_VOLUME_MASK 0x7f -+#define TSC2301_MIN_ADCVOL 6 -+#define TSC2301_MIN_DACVOL 0 -+#define TSC2301_MIN_BPVOL 31 -+#define TSC2301_MUTE_LEFT_SHIFT 15 -+#define TSC2301_VOL_LEFT_SHIFT 8 -+#define TSC2301_MUTE_RIGHT_SHIFT 7 -+#define TSC2301_VOL_RIGHT_SHIFT 0 -+ -+#define TSC2301_INM_MASK 3 -+#define TSC2301_INML_SHIFT 12 -+#define TSC2301_INMR_SHIFT 10 -+ -+#define TSC2301_MICG_MASK 3 -+#define TSC2301_MICG_MIN 1 /* values 0 & 1 both mean 0 dB */ -+#define TSC2301_MICG_SHIFT 8 -+ -+#define TSC2301_REG_AUDCNTL_MCLK(v) (((v) & 3) << 6) -+#define TSC2301_REG_AUDCNTL_I2SFS(v) (((v) & 0xf) << 2) -+#define TSC2301_REG_AUDCNTL_I2SFM(v) (((v) & 3) << 0) -+ -+#define TSC2301_SINGLE(xname, xindex, reg, shadow_index, shift, mask, min) \ -+{\ -+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ -+ .name = xname, \ -+ .index = xindex, \ -+ .info = snd_tsc2301_info_single, \ -+ .get = snd_tsc2301_get_single, \ -+ .put = snd_tsc2301_put_single, \ -+ .private_value = TSC2301_REG_TO_PVAL(reg) | \ -+ (shadow_index << 8) | (shift << 16) | (mask << 24) | \ -+ (min << 28) \ -+} -+#define TSC2301_SINGLE_MINVAL(v) (((v) >> 28) & 15) -+#define TSC2301_SINGLE_SHIFT(v) (((v) >> 16) & 15) -+#define TSC2301_SINGLE_MASK(v) (((v) >> 24) & 15) -+ -+#define TSC2301_DOUBLE(xname, xindex, reg, shadow_index, ls, rs, mask, min) \ -+{\ -+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ -+ .name = xname, \ -+ .index = xindex, \ -+ .info = snd_tsc2301_info_double, \ -+ .get = snd_tsc2301_get_double, \ -+ .put = snd_tsc2301_put_double, \ -+ .private_value = TSC2301_REG_TO_PVAL(reg) | \ -+ (shadow_index << 8) | (min << 11) | \ -+ (ls << 16) | (rs << 20) | (mask << 24) \ -+} -+#define TSC2301_DOUBLE_MINVAL(v) (((v) >> 11) & 0x1f) -+#define TSC2301_DOUBLE_LEFT_SHIFT(v) (((v) >> 16) & 15) -+#define TSC2301_DOUBLE_RIGHT_SHIFT(v) (((v) >> 20) & 15) -+#define TSC2301_DOUBLE_MASK(v) (((v) >> 24) & TSC2301_VOLUME_MASK) -+ -+#define TSC2301_MUX(xname, xindex, reg, shadow_index, ls, rs, mask) \ -+{\ -+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ -+ .name = xname, \ -+ .index = xindex, \ -+ .info = snd_tsc2301_info_mux, \ -+ .get = snd_tsc2301_get_mux, \ -+ .put = snd_tsc2301_put_mux, \ -+ .private_value = TSC2301_REG_TO_PVAL(reg) | \ -+ (shadow_index << 8) | (ls << 16) | (rs << 20) | (mask << 24) \ -+} -+#define TSC2301_MUX_LEFT_SHIFT(v) (((v) >> 16) & 15) -+#define TSC2301_MUX_RIGHT_SHIFT(v) (((v) >> 20) & 15) -+#define TSC2301_MUX_MASK(v) (((v) >> 24) & TSC2301_VOLUME_MASK) -+ -+#define TSC2301_BOOL(xname, xindex, reg, shadow_index, shift, invert, state) \ -+{ \ -+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ -+ .name = xname, \ -+ .index = xindex, \ -+ .info = snd_tsc2301_info_bool, \ -+ .get = snd_tsc2301_get_bool, \ -+ .put = snd_tsc2301_put_bool, \ -+ .private_value = TSC2301_REG_TO_PVAL(reg) | \ -+ (shadow_index << 8) | (shift << 16) | \ -+ (invert << 24) | (state << 25) \ -+} -+#define TSC2301_BOOL_SHIFT(v) (((v) >> 16) & 7) -+#define TSC2301_BOOL_INVERT(v) (((v) >> 24) & 1) -+#define TSC2301_BOOL_STATE(v) (((v) >> 25) & 1) -+ -+#define TSC2301_SHADOW_INDEX(v) (((v) >> 8) & 7) -+ -+/* -+ * Power-down handler for additional GPIO mixer controls. GPIO state of GPIO -+ * controls whose power-down flag is enabled are set to their false/deactivate -+ * state -+ * -+ * Must be called tsc->mixer->mutex locked -+ */ -+static void tsc2301_gpio_power_down(struct tsc2301 *tsc) -+{ -+ struct tsc2301_mixer *mix = tsc->mixer; -+ u16 temp; -+ int i; -+ -+ temp = mix->shadow_regs[GPIO_INDEX]; -+ for (i = 0; i < mix->n_mixer_gpios; i++) { -+ const struct tsc2301_mixer_gpio *mg; -+ -+ mg = mix->mixer_gpios + i; -+ if (mg->deactivate_on_pd) { -+ int gpio = mg->gpio; -+ -+ temp &= ~(1 << gpio); -+ temp |= mg->inverted << gpio; -+ } -+ } -+ tsc2301_write_reg(tsc, TSC2301_REG_GPIO, temp); -+} -+ -+/* -+ * Powers down/up audio blocks which are muted or become unused. -+ * shadow_index >= 0, changes power state of single audio block -+ * shadow_index < 0, changes power state of all blocks -+ * -+ * Must be called tsc->mixer->mutex locked -+ */ -+#define TSC2301_MUTE_MASK \ -+ ((1 << TSC2301_MUTE_LEFT_SHIFT) | (1 << TSC2301_MUTE_RIGHT_SHIFT)) -+static void tsc2301_power_ctrl(struct tsc2301 *tsc, int shadow_index, -+ int poll_pdsts) -+{ -+ struct tsc2301_mixer *mix = tsc->mixer; -+ u16 pd_ctrl, pd_ctrl_old, w; -+ unsigned long timeout; -+ int power_up = 0; -+ -+ if (mix->delayed_pd_active) { -+ mix->delayed_pd_active = 0; -+ mix->mclk_enabled--; -+ cancel_delayed_work(&mix->delayed_power_down); -+ } -+ -+ pd_ctrl = pd_ctrl_old = mix->shadow_regs[PD_MISC_INDEX]; -+ /* power control helper based on used space mixer selections. See -+ * actual power control decisions below */ -+ if (shadow_index < 0 || shadow_index == ADCVOL_INDEX) { -+ /* ADC left and right power down control */ -+ if (mix->shadow_regs[ADCVOL_INDEX] & -+ (1 << TSC2301_MUTE_LEFT_SHIFT)) -+ /* left ADC muted. Power down the left ADC */ -+ pd_ctrl |= TSC2301_REG_PD_MISC_ADPDL; -+ else -+ pd_ctrl &= ~TSC2301_REG_PD_MISC_ADPDL; -+ if (mix->shadow_regs[ADCVOL_INDEX] & -+ (1 << TSC2301_MUTE_LEFT_SHIFT)) -+ /* right ADC muted. Power down the right ADC */ -+ pd_ctrl |= TSC2301_REG_PD_MISC_ADPDR; -+ else -+ pd_ctrl &= ~TSC2301_REG_PD_MISC_ADPDR; -+ } -+ if (shadow_index < 0 || shadow_index == DACVOL_INDEX) { -+ /* DAC power down control */ -+ if ((mix->shadow_regs[DACVOL_INDEX] & -+ TSC2301_MUTE_MASK) == TSC2301_MUTE_MASK) -+ /* both DACs muted. Power down the DAC */ -+ pd_ctrl |= TSC2301_REG_PD_MISC_DAPD; -+ else -+ pd_ctrl &= ~TSC2301_REG_PD_MISC_DAPD; -+ } -+ if (shadow_index < 0 || shadow_index == BPVOL_INDEX) { -+ /* line bypass power down control */ -+ if ((mix->shadow_regs[BPVOL_INDEX] & -+ TSC2301_MUTE_MASK) == TSC2301_MUTE_MASK) -+ /* both line bypasses muted. Power down the bypass -+ * path */ -+ pd_ctrl |= TSC2301_REG_PD_MISC_ABPD; -+ else -+ pd_ctrl &= ~TSC2301_REG_PD_MISC_ABPD; -+ } -+ if (shadow_index < 0 || shadow_index == AUDCNTL_INDEX) { -+ /* mic bias power down control */ -+ if ((mix->shadow_regs[AUDCNTL_INDEX] & -+ (3 << TSC2301_INML_SHIFT)) && -+ (mix->shadow_regs[AUDCNTL_INDEX] & -+ (3 << TSC2301_INMR_SHIFT))) -+ /* both ADC channels use other than mic input. Power -+ * down the mic bias output */ -+ pd_ctrl |= TSC2301_REG_PD_MISC_MIBPD; -+ else -+ pd_ctrl &= ~TSC2301_REG_PD_MISC_MIBPD; -+ } -+ -+ /* power control decisions based on codec usage and user space mixer -+ * selections detected above */ -+ pd_ctrl &= ~TSC2301_REG_PD_MISC_APD; /* audio not powered down */ -+ if (mix->mclk_enabled) { -+ if (!mix->adc_enabled) { -+ /* ADC not used, power down both ADC's and mic bias -+ * output independently of user space mixer -+ * selections */ -+ pd_ctrl |= TSC2301_REG_PD_MISC_ADPDL; -+ pd_ctrl |= TSC2301_REG_PD_MISC_ADPDR; -+ pd_ctrl |= TSC2301_REG_PD_MISC_MIBPD; -+ } -+ if (!mix->dac_enabled) { -+ /* DAC not used, power down DAC independently of user -+ * space mixer selections */ -+ pd_ctrl |= TSC2301_REG_PD_MISC_DAPD; -+ } -+ -+ if (mix->pll_output) { -+ /* GPIO_0 is configured as PLL output so audio -+ * controller is expecting clock from TSC2301. Either -+ * ADC or DAC must be active in order to keep PLL on */ -+ if ((pd_ctrl & TSC2301_REG_PD_MISC_ADPDL) && -+ (pd_ctrl & TSC2301_REG_PD_MISC_ADPDR) && -+ (pd_ctrl & TSC2301_REG_PD_MISC_DAPD)) { -+ /* neither ADC or DAC used. Force ADC on in -+ * order to keep PLL active */ -+ pd_ctrl &= ~(TSC2301_REG_PD_MISC_ADPDL | -+ TSC2301_REG_PD_MISC_ADPDR); -+ } -+ } -+ } else { -+ /* audio input clock is not enabled so power down DAC and ADC -+ * in order to shutdown PLL and to keep touchscreen and keypad -+ * parts working. Touchscreen and keypad use audio clock when -+ * PLL is on and internal clock otherwise */ -+ pd_ctrl |= TSC2301_REG_PD_MISC_DAPD | -+ TSC2301_REG_PD_MISC_ADPDL | -+ TSC2301_REG_PD_MISC_ADPDR; -+ } -+ -+ if ((pd_ctrl & TSC2301_REG_PD_MISC_ADPDL) && -+ (pd_ctrl & TSC2301_REG_PD_MISC_ADPDR) && -+ (pd_ctrl & TSC2301_REG_PD_MISC_DAPD) && -+ (pd_ctrl & TSC2301_REG_PD_MISC_ABPD)) { -+ /* all ADC, DAC and line bypass path unused. Power down the -+ * whole audio part of the TSC2301 */ -+ pd_ctrl |= TSC2301_REG_PD_MISC_APD; -+ } -+ -+ if (pd_ctrl == pd_ctrl_old) -+ return; -+ -+ /* power down control changed. Update into TSC2301 */ -+ if ((pd_ctrl ^ pd_ctrl_old) & TSC2301_REG_PD_MISC_APD) { -+ /* whole audio power state changed. Update GPIO states */ -+ if (pd_ctrl & TSC2301_REG_PD_MISC_APD) { -+ /* power down GPIO controls before powering down -+ * the codec */ -+ tsc2301_gpio_power_down(tsc); -+ /* we must really ensure that codec has been on no less -+ * than 100 msec before doing power-down */ -+ timeout = mix->pu_jiffies + TSC2301_MIN_PU_PERIOD - -+ jiffies; -+ if (timeout <= TSC2301_MIN_PU_PERIOD) { -+ mix->delayed_pd_active = 1; -+ mix->mclk_enabled++; -+ schedule_delayed_work(&mix->delayed_power_down, -+ timeout + 1); -+ return; -+ } -+ } else -+ /* restore GPIOs after codec is powered up */ -+ power_up = 1; -+ } -+ mix->shadow_regs[PD_MISC_INDEX] = pd_ctrl; -+ tsc2301_write_reg(tsc, TSC2301_REG_PD_MISC, pd_ctrl); -+ if (power_up) -+ mix->pu_jiffies = jiffies; -+ if (!poll_pdsts) { -+ if (power_up) -+ tsc2301_write_reg(tsc, TSC2301_REG_GPIO, -+ mix->shadow_regs[GPIO_INDEX]); -+ return; -+ } -+ -+ /* wait until power-up/-down is completed */ -+ timeout = jiffies + msecs_to_jiffies(100); -+ w = 0; -+ do { -+ if (time_after(jiffies, timeout)) { -+ /* Print a warning only if the I2S clock is not -+ * present / out of sync. This can happen during -+ * init time, when that clock will be turned on -+ * by another driver like in the OMAP EAC with -+ * external clock case. -+ */ -+ if (w & TSC2301_REG_PD_MISC_OTSYN) { -+ dev_warn(&tsc->spi->dev, -+ "I2S clock not in sync or off.\n"); -+ } else { -+ dev_err(&tsc->spi->dev, -+ "power-up/-down timed out " -+ "(0x%04x, 0x%04x -> 0x%04x)\n", -+ w, pd_ctrl_old, pd_ctrl); -+ } -+ goto out; -+ } -+ w = tsc2301_read_reg(tsc, TSC2301_REG_PD_MISC); -+ } while (!(w & TSC2301_REG_PD_MISC_PDSTS)); -+ -+out: -+ if (((pd_ctrl ^ pd_ctrl_old) & TSC2301_REG_PD_MISC_DAPD) && -+ !(pd_ctrl & TSC2301_REG_PD_MISC_DAPD)) { -+ /* DAC powered up now. Ensure that DAC and audio outputs are -+ * activated. They are up 100 msec after the chip power-up -+ * command */ -+ timeout = mix->pu_jiffies + TSC2301_DAC_DELAY - jiffies; -+ if (timeout <= TSC2301_DAC_DELAY) -+ schedule_timeout_interruptible(timeout); -+ /* FIXME: This is lazy. We restore GPIOs only after activating -+ * the DAC. It would be better to do some kind of delayed GPIO -+ * restore. That ensures that we restore them also if only ADC -+ * path is activated. But this is required only if there is -+ * some input amplifier, bias control, etc. and their power -+ * state is under TSC GPIO control */ -+ tsc2301_write_reg(tsc, TSC2301_REG_GPIO, -+ mix->shadow_regs[GPIO_INDEX]); -+ } -+} -+ -+static int snd_tsc2301_info_single(struct snd_kcontrol *kcontrol, -+ struct snd_ctl_elem_info *uinfo) -+{ -+ int mask = TSC2301_SINGLE_MASK(kcontrol->private_value); -+ int minval = TSC2301_SINGLE_MINVAL(kcontrol->private_value); -+ -+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; -+ uinfo->count = 1; -+ uinfo->value.integer.min = minval; -+ uinfo->value.integer.max = mask; -+ -+ return 0; -+} -+ -+static int snd_tsc2301_get_single(struct snd_kcontrol *kcontrol, -+ struct snd_ctl_elem_value *ucontrol) -+{ -+ struct tsc2301 *tsc = kcontrol->private_data; -+ unsigned long priv = kcontrol->private_value; -+ int mask = TSC2301_SINGLE_MASK(priv); -+ int shift = TSC2301_SINGLE_SHIFT(priv); -+ int shadow_index = TSC2301_SHADOW_INDEX(priv); -+ u16 shadow_reg; -+ -+ shadow_reg = tsc->mixer->shadow_regs[shadow_index]; -+ -+ ucontrol->value.integer.value[0] = (shadow_reg >> shift) & mask; -+ -+ return 0; -+} -+ -+static int snd_tsc2301_put_single(struct snd_kcontrol *kcontrol, -+ struct snd_ctl_elem_value *ucontrol) -+{ -+ struct tsc2301 *tsc = kcontrol->private_data; -+ unsigned long priv = kcontrol->private_value; -+ int mask = TSC2301_SINGLE_MASK(priv); -+ int shadow_index = TSC2301_SHADOW_INDEX(priv); -+ u16 shadow_reg, shadow_reg_old; -+ int shift = TSC2301_SINGLE_SHIFT(priv); -+ int reg = TSC2301_PVAL_TO_REG(priv); -+ int changed; -+ -+ mutex_lock(&tsc->mixer->mutex); -+ shadow_reg = shadow_reg_old = tsc->mixer->shadow_regs[shadow_index]; -+ -+ /* zero bits to be modified */ -+ shadow_reg &= ~(mask << shift); -+ /* modify with new value */ -+ shadow_reg |= ((ucontrol->value.integer.value[0] & mask) << shift); -+ -+ changed = (shadow_reg != shadow_reg_old); -+ tsc->mixer->shadow_regs[shadow_index] = shadow_reg; -+ -+ /* update into TSC2301 if necessary */ -+ if (changed) -+ tsc2301_write_reg(tsc, reg, shadow_reg); -+ mutex_unlock(&tsc->mixer->mutex); -+ -+ return changed; -+} -+ -+static int snd_tsc2301_info_double(struct snd_kcontrol *kcontrol, -+ struct snd_ctl_elem_info *uinfo) -+{ -+ /* mask == 1 : Switch -+ * mask > 1 : Max volume */ -+ int mask = TSC2301_DOUBLE_MASK(kcontrol->private_value); -+ int minval = TSC2301_DOUBLE_MINVAL(kcontrol->private_value); -+ -+ uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : -+ SNDRV_CTL_ELEM_TYPE_INTEGER; -+ uinfo->count = 2; -+ uinfo->value.integer.min = minval; -+ uinfo->value.integer.max = mask; -+ -+ return 0; -+} -+ -+static int snd_tsc2301_get_double(struct snd_kcontrol *kcontrol, -+ struct snd_ctl_elem_value *ucontrol) -+{ -+ struct tsc2301 *tsc = kcontrol->private_data; -+ unsigned long priv = kcontrol->private_value; -+ /* mask == 1 : Switch -+ * mask > 1 : Volume */ -+ int mask = TSC2301_DOUBLE_MASK(priv); -+ int ls = TSC2301_DOUBLE_LEFT_SHIFT(priv); -+ int rs = TSC2301_DOUBLE_RIGHT_SHIFT(priv); -+ int shadow_index = TSC2301_SHADOW_INDEX(priv); -+ u16 shadow_reg; -+ -+ shadow_reg = tsc->mixer->shadow_regs[shadow_index]; -+ -+ /* invert mute bits for the switches */ -+ if (mask == 1) -+ shadow_reg = ~shadow_reg; -+ -+ ucontrol->value.integer.value[0] = (shadow_reg >> ls) & mask; -+ ucontrol->value.integer.value[1] = (shadow_reg >> rs) & mask; -+ -+ return 0; -+} -+ -+static int snd_tsc2301_put_double(struct snd_kcontrol *kcontrol, -+ struct snd_ctl_elem_value *ucontrol) -+{ -+ struct tsc2301 *tsc = kcontrol->private_data; -+ unsigned long priv = kcontrol->private_value; -+ /* mask == 1 : Switch -+ * mask > 1 : Volume */ -+ int mask = TSC2301_DOUBLE_MASK(priv); -+ int shadow_index = TSC2301_SHADOW_INDEX(priv); -+ u16 shadow_reg, shadow_reg_old; -+ int ls = TSC2301_DOUBLE_LEFT_SHIFT(priv); -+ int rs = TSC2301_DOUBLE_RIGHT_SHIFT(priv); -+ int reg = TSC2301_PVAL_TO_REG(priv); -+ int changed; -+ -+ mutex_lock(&tsc->mixer->mutex); -+ shadow_reg = shadow_reg_old = tsc->mixer->shadow_regs[shadow_index]; -+ -+ /* zero bits to be modified */ -+ shadow_reg &= ~((mask << ls) | (mask << rs)); -+ /* modify with new value */ -+ if (mask == 1) { -+ /* switch. Invert switch values for the mute bits */ -+ shadow_reg |= -+ ((~ucontrol->value.integer.value[0] & mask) << ls) | -+ ((~ucontrol->value.integer.value[1] & mask) << rs); -+ } else { -+ /* volume */ -+ shadow_reg |= -+ (ucontrol->value.integer.value[0] << ls) | -+ (ucontrol->value.integer.value[1] << rs); -+ } -+ -+ changed = (shadow_reg != shadow_reg_old); -+ tsc->mixer->shadow_regs[shadow_index] = shadow_reg; -+ -+ /* update into TSC2301 if necessary */ -+ if (changed) -+ tsc2301_write_reg(tsc, reg, shadow_reg); -+ -+ if (mask == 1) -+ /* check is need to power down/up audio blocks in case of -+ * muted state change */ -+ tsc2301_power_ctrl(tsc, shadow_index, 0); -+ mutex_unlock(&tsc->mixer->mutex); -+ -+ return changed; -+} -+ -+static int snd_tsc2301_info_mux(struct snd_kcontrol *kcontrol, -+ struct snd_ctl_elem_info *uinfo) -+{ -+ static char *texts[4] = {"Mic", "Line", "Line swapped", "Line mono"}; -+ -+ uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; -+ uinfo->count = 2; -+ uinfo->value.enumerated.items = 4; -+ if (uinfo->value.enumerated.item > 3) -+ uinfo->value.enumerated.item = 3; -+ strcpy(uinfo->value.enumerated.name, -+ texts[uinfo->value.enumerated.item]); -+ -+ return 0; -+} -+ -+static int snd_tsc2301_get_mux(struct snd_kcontrol *kcontrol, -+ struct snd_ctl_elem_value *ucontrol) -+{ -+ struct tsc2301 *tsc = kcontrol->private_data; -+ unsigned long priv = kcontrol->private_value; -+ int mask = TSC2301_MUX_MASK(priv); -+ int ls = TSC2301_MUX_LEFT_SHIFT(priv); -+ int rs = TSC2301_MUX_RIGHT_SHIFT(priv); -+ int shadow_index = TSC2301_SHADOW_INDEX(priv); -+ u16 shadow_reg; -+ -+ shadow_reg = tsc->mixer->shadow_regs[shadow_index]; -+ ucontrol->value.enumerated.item[0] = (shadow_reg >> ls) & mask; -+ ucontrol->value.enumerated.item[1] = (shadow_reg >> rs) & mask; -+ -+ return 0; -+} -+ -+static int snd_tsc2301_put_mux(struct snd_kcontrol *kcontrol, -+ struct snd_ctl_elem_value *ucontrol) -+{ -+ struct tsc2301 *tsc = kcontrol->private_data; -+ unsigned long priv = kcontrol->private_value; -+ int mask = TSC2301_MUX_MASK(priv); -+ int shadow_index = TSC2301_SHADOW_INDEX(priv); -+ u16 shadow_reg, shadow_reg_old; -+ int ls = TSC2301_MUX_LEFT_SHIFT(priv); -+ int rs = TSC2301_MUX_RIGHT_SHIFT(priv); -+ int reg = TSC2301_PVAL_TO_REG(priv); -+ int changed; -+ -+ mutex_lock(&tsc->mixer->mutex); -+ shadow_reg = shadow_reg_old = tsc->mixer->shadow_regs[shadow_index]; -+ -+ /* zero bits to be modified */ -+ shadow_reg &= ~((mask << ls) | (mask << rs)); -+ /* modify with new value */ -+ shadow_reg |= (ucontrol->value.enumerated.item[0] << ls); -+ shadow_reg |= (ucontrol->value.enumerated.item[1] << rs); -+ -+ changed = (shadow_reg != shadow_reg_old); -+ -+ /* update into TSC2301 if necessary */ -+ if (changed) { -+ tsc->mixer->shadow_regs[shadow_index] = shadow_reg; -+ tsc2301_write_reg(tsc, reg, shadow_reg); -+ } -+ -+ /* check is need to power up/down audio blocks in case of ADC input -+ * change */ -+ tsc2301_power_ctrl(tsc, shadow_index, 0); -+ mutex_unlock(&tsc->mixer->mutex); -+ -+ return changed; -+} -+ -+static int snd_tsc2301_info_bool(struct snd_kcontrol *kcontrol, -+ struct snd_ctl_elem_info *uinfo) -+{ -+ uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; -+ uinfo->count = 1; -+ uinfo->value.integer.min = 0; -+ uinfo->value.integer.max = 1; -+ -+ return 0; -+} -+ -+static int snd_tsc2301_get_bool(struct snd_kcontrol *kcontrol, -+ struct snd_ctl_elem_value *ucontrol) -+{ -+ struct tsc2301 *tsc = kcontrol->private_data; -+ unsigned long priv = kcontrol->private_value; -+ int shadow_index = TSC2301_SHADOW_INDEX(priv); -+ int shift = TSC2301_BOOL_SHIFT(priv); -+ int invert = TSC2301_BOOL_INVERT(priv); -+ u16 shadow_reg; -+ -+ shadow_reg = tsc->mixer->shadow_regs[shadow_index]; -+ ucontrol->value.integer.value[0] = -+ invert ^ ((shadow_reg >> shift) & 1); -+ -+ return 0; -+} -+ -+static int snd_tsc2301_put_bool(struct snd_kcontrol *kcontrol, -+ struct snd_ctl_elem_value *ucontrol) -+{ -+ struct tsc2301 *tsc = kcontrol->private_data; -+ unsigned long priv = kcontrol->private_value; -+ int shadow_index = TSC2301_SHADOW_INDEX(priv); -+ int shift = TSC2301_BOOL_SHIFT(priv); -+ int invert = TSC2301_BOOL_INVERT(priv); -+ int reg = TSC2301_PVAL_TO_REG(priv); -+ u16 shadow_reg, shadow_reg_old; -+ int changed; -+ -+ mutex_lock(&tsc->mixer->mutex); -+ shadow_reg = shadow_reg_old = tsc->mixer->shadow_regs[shadow_index]; -+ -+ /* zero bit to be modified */ -+ shadow_reg &= ~(1 << shift); -+ /* modify with new value */ -+ shadow_reg |= -+ (invert ^ (ucontrol->value.integer.value[0] & 1)) << shift; -+ -+ changed = (shadow_reg != shadow_reg_old); -+ -+ /* update into TSC2301 if necessary */ -+ if (changed) { -+ tsc->mixer->shadow_regs[shadow_index] = shadow_reg; -+ if ((shadow_index == GPIO_INDEX) && -+ (tsc->mixer->shadow_regs[PD_MISC_INDEX] & -+ TSC2301_REG_PD_MISC_APD)) { -+ /* changing GPIO control and audio is powered down. -+ * Update GPIO states according to their power-down -+ * flag */ -+ tsc2301_gpio_power_down(tsc); -+ } else -+ tsc2301_write_reg(tsc, reg, shadow_reg); -+ } -+ mutex_unlock(&tsc->mixer->mutex); -+ -+ return changed; -+} -+ -+/* TSC2301 internal mixer controls */ -+static struct snd_kcontrol_new snd_tsc2301_controls[] = { -+ /* stereo ADC input switches and volumes */ -+ TSC2301_DOUBLE("Capture Switch", 0, -+ TSC2301_REG_ADCVOL, ADCVOL_INDEX, -+ TSC2301_MUTE_LEFT_SHIFT, TSC2301_MUTE_RIGHT_SHIFT, -+ 1, 0), -+ TSC2301_DOUBLE("Capture Volume", 0, -+ TSC2301_REG_ADCVOL, ADCVOL_INDEX, -+ TSC2301_VOL_LEFT_SHIFT, TSC2301_VOL_RIGHT_SHIFT, -+ TSC2301_VOLUME_MASK, TSC2301_MIN_ADCVOL), -+ -+ /* stereo DAC output switches and volumes */ -+ TSC2301_DOUBLE("PCM Playback Switch", 0, -+ TSC2301_REG_DACVOL, DACVOL_INDEX, -+ TSC2301_MUTE_LEFT_SHIFT, TSC2301_MUTE_RIGHT_SHIFT, -+ 1, 0), -+ TSC2301_DOUBLE("PCM Playback Volume", 0, -+ TSC2301_REG_DACVOL, DACVOL_INDEX, -+ TSC2301_VOL_LEFT_SHIFT, TSC2301_VOL_RIGHT_SHIFT, -+ TSC2301_VOLUME_MASK, TSC2301_MIN_DACVOL), -+ -+ /* stereo line input bypass switches and volumes */ -+ TSC2301_DOUBLE("Line Playback Switch", 0, -+ TSC2301_REG_BPVOL, BPVOL_INDEX, -+ TSC2301_MUTE_LEFT_SHIFT, TSC2301_MUTE_RIGHT_SHIFT, -+ 1, 0), -+ TSC2301_DOUBLE("Line Playback Volume", 0, -+ TSC2301_REG_BPVOL, BPVOL_INDEX, -+ TSC2301_VOL_LEFT_SHIFT, TSC2301_VOL_RIGHT_SHIFT, -+ TSC2301_VOLUME_MASK, TSC2301_MIN_BPVOL), -+ -+ /* mono microphone input gain */ -+ TSC2301_SINGLE("Mic Boost", 0, -+ TSC2301_REG_AUDCNTL, AUDCNTL_INDEX, -+ TSC2301_MICG_SHIFT, -+ TSC2301_MICG_MASK, TSC2301_MICG_MIN), -+ -+ /* ADC input sources. Both channels could be selected separately */ -+ TSC2301_MUX("Capture Source", 0, -+ TSC2301_REG_AUDCNTL, AUDCNTL_INDEX, -+ TSC2301_INML_SHIFT, TSC2301_INMR_SHIFT, -+ TSC2301_INM_MASK), -+}; -+ -+/* must be called tsc->mixer->mutex locked */ -+static void tsc2301_flush_shadow_regs(struct tsc2301 *tsc) -+{ -+ int i, page, addr; -+ u16 temp; -+ -+ page = TSC2301_REG_TO_PAGE(TSC2301_REG_AUDCNTL); -+ addr = TSC2301_REG_TO_ADDR(TSC2301_REG_AUDCNTL); -+ -+ for (i = 0; i < 4; i++) { -+ temp = tsc->mixer->shadow_regs[i]; -+ tsc2301_write_reg(tsc, TSC2301_REG(page, addr + i), temp); -+ } -+ temp = tsc->mixer->shadow_regs[GPIO_INDEX]; -+ tsc2301_write_reg(tsc, TSC2301_REG_GPIO, temp); -+ -+ /* Update power state of all audio blocks depending are they -+ * muted or unused. */ -+ tsc2301_power_ctrl(tsc, -1, 0); -+} -+ -+#ifdef CONFIG_PM -+int tsc2301_mixer_suspend(struct tsc2301 *tsc) -+{ -+ /* power down entire audio section inside TSC2301 in case the -+ * chip is still powered during the system sleep. However this driver -+ * doesn't require that chip is powered because registers are restored -+ * in function tsc2301_mixer_resume */ -+ mutex_lock(&tsc->mixer->mutex); -+ tsc2301_gpio_power_down(tsc); -+ tsc->mixer->shadow_regs[PD_MISC_INDEX] |= TSC2301_REG_PD_MISC_APD; -+ tsc2301_write_reg(tsc, TSC2301_REG_PD_MISC, -+ tsc->mixer->shadow_regs[PD_MISC_INDEX]); -+ mutex_unlock(&tsc->mixer->mutex); -+ return 0; -+} -+ -+void tsc2301_mixer_resume(struct tsc2301 *tsc) -+{ -+ /* power up the TSC2301 audio section and restore registers */ -+ mutex_lock(&tsc->mixer->mutex); -+ tsc->mixer->shadow_regs[PD_MISC_INDEX] &= ~TSC2301_REG_PD_MISC_APD; -+ tsc2301_flush_shadow_regs(tsc); -+ mutex_unlock(&tsc->mixer->mutex); -+} -+#endif -+ -+void tsc2301_mixer_enable_mclk(struct device *dev) -+{ -+ struct tsc2301 *tsc = dev_get_drvdata(dev); -+ struct tsc2301_mixer *mix = tsc->mixer; -+ -+ mutex_lock(&mix->mutex); -+ if (!mix->mclk_enabled++ && tsc->enable_clock != NULL) { -+ tsc->enable_clock(dev); -+ } -+ tsc2301_power_ctrl(tsc, -1, 1); -+ mutex_unlock(&mix->mutex); -+} -+ -+void tsc2301_mixer_disable_mclk(struct device *dev) -+{ -+ struct tsc2301 *tsc = dev_get_drvdata(dev); -+ struct tsc2301_mixer *mix = tsc->mixer; -+ -+ mutex_lock(&mix->mutex); -+ mix->mclk_enabled--; -+ tsc2301_power_ctrl(tsc, -1, 1); -+ if (!mix->mclk_enabled && tsc->disable_clock != NULL) { -+ tsc->disable_clock(dev); -+ } -+ mutex_unlock(&mix->mutex); -+} -+ -+static void tsc2301_mixer_delayed_power_down(struct work_struct *work) -+{ -+ struct tsc2301_mixer *mix = container_of(work, struct tsc2301_mixer, -+ delayed_power_down.work); -+ struct tsc2301 *tsc = mix->tsc; -+ -+ mutex_lock(&mix->mutex); -+ if (!mix->delayed_pd_active) { -+ mutex_unlock(&mix->mutex); -+ return; -+ } -+ mix->delayed_pd_active = 0; -+ mutex_unlock(&mix->mutex); -+ tsc2301_mixer_disable_mclk(&tsc->spi->dev); -+} -+ -+/* -+ * Allows audio controller driver to notify its usage of ADC and DAC -+ */ -+void tsc2301_mixer_set_power(struct device *dev, int dac, int adc) -+{ -+ struct tsc2301 *tsc = dev_get_drvdata(dev); -+ -+ mutex_lock(&tsc->mixer->mutex); -+ tsc->mixer->adc_enabled = adc; -+ tsc->mixer->dac_enabled = dac; -+ -+ /* update power state of all audio blocks */ -+ tsc2301_power_ctrl(tsc, -1, 1); -+ mutex_unlock(&tsc->mixer->mutex); -+} -+ -+/* -+ * Registers TSC2301 ALSA Mixer controls for the given sound card -+ */ -+int tsc2301_mixer_register_controls(struct device *dev, struct snd_card *card) -+{ -+ struct tsc2301 *tsc = dev_get_drvdata(dev); -+ struct tsc2301_mixer *mix = tsc->mixer; -+ int i, err; -+ -+ /* Register ALSA mixer controls */ -+ for (i = 0; i < ARRAY_SIZE(snd_tsc2301_controls); i++) { -+ err = snd_ctl_add(card, -+ snd_ctl_new1(&snd_tsc2301_controls[i], tsc)); -+ if (err < 0) -+ return err; -+ } -+ -+ if (!mix->n_mixer_gpios) -+ return 0; -+ -+ /* Register additional GPIO controls if defined */ -+ for (i = 0; i < mix->n_mixer_gpios; i++) { -+ const struct tsc2301_mixer_gpio *mg = mix->mixer_gpios + i; -+ struct snd_kcontrol *ctrlp; -+ struct snd_kcontrol_new ctrl = -+ TSC2301_BOOL((char *)mg->name, 0, -+ TSC2301_REG_GPIO, GPIO_INDEX, -+ mg->gpio, mg->inverted, mg->def_enable); -+ -+ ctrlp = snd_ctl_new1(&ctrl, tsc); -+ err = snd_ctl_add(card, ctrlp); -+ if (err < 0) -+ return err; -+ } -+ -+ return 0; -+} -+ -+int tsc2301_mixer_init(struct tsc2301 *tsc, -+ struct tsc2301_platform_data *pdata) -+{ -+ struct tsc2301_mixer *mix; -+ int err = 0; -+ u16 w; -+ -+ mix = kzalloc(sizeof(*mix), GFP_KERNEL); -+ if (mix == NULL) -+ return -ENOMEM; -+ tsc->mixer = mix; -+ -+ mix->tsc = tsc; -+ mutex_init(&mix->mutex); -+ mix->platform_init = pdata->codec_init; -+ mix->platform_cleanup = pdata->codec_cleanup; -+ mix->pll_output = pdata->pll_output; -+ -+ INIT_DELAYED_WORK(&mix->delayed_power_down, -+ tsc2301_mixer_delayed_power_down); -+ -+ /* initialize shadow register default values */ -+ w = 0xc000; -+ w |= (pdata->mclk_ratio << 6) | (pdata->i2s_sample_rate << 2); -+ w |= pdata->i2s_format; -+ mix->shadow_regs[AUDCNTL_INDEX] = w; -+ mix->shadow_regs[ADCVOL_INDEX] = 0xd7d7; -+ mix->shadow_regs[DACVOL_INDEX] = 0xffff; -+ mix->shadow_regs[BPVOL_INDEX] = 0xe7e7; -+ mix->shadow_regs[PD_MISC_INDEX] = pdata->power_down_blocks; -+ -+ /* if extra mixer controls configured, then configure associated -+ * GPIOs as output and drive their default state */ -+ if (pdata->n_mixer_gpios) { -+ int i; -+ -+ w = 0; -+ for (i = 0; i < pdata->n_mixer_gpios; i++) { -+ const struct tsc2301_mixer_gpio *mg; -+ int gpio; -+ -+ mg = pdata->mixer_gpios + i; -+ gpio = mg->gpio; -+ w |= (1 << gpio) << 8; -+ w |= (mg->inverted ^ mg->def_enable) << gpio; -+ } -+ mix->shadow_regs[GPIO_INDEX] = w; -+ -+ mix->mixer_gpios = kmalloc(sizeof(*pdata->mixer_gpios) * -+ pdata->n_mixer_gpios, -+ GFP_KERNEL); -+ if (mix->mixer_gpios == NULL) { -+ err = -ENOMEM; -+ goto err1; -+ } -+ memcpy(mix->mixer_gpios, pdata->mixer_gpios, -+ sizeof(*pdata->mixer_gpios) * pdata->n_mixer_gpios); -+ mix->n_mixer_gpios = pdata->n_mixer_gpios; -+ } -+ -+ /* PLL control */ -+ tsc2301_write_pll(tsc, pdata->pll_n, pdata->pll_a, pdata->pll_pdc, -+ 0, mix->pll_output ? 0 : 1); -+ -+ tsc2301_flush_shadow_regs(tsc); -+ -+ if (mix->platform_init != NULL) { -+ err = mix->platform_init(&tsc->spi->dev); -+ if (err < 0) -+ goto err2; -+ } -+ -+ return 0; -+err2: -+ if (mix->mixer_gpios != NULL) -+ kfree(mix->mixer_gpios); -+err1: -+ kfree(mix); -+ return err; -+} -+ -+void tsc2301_mixer_exit(struct tsc2301 *tsc) -+{ -+ struct tsc2301_mixer *mixer = tsc->mixer; -+ -+ if (mixer->platform_cleanup != NULL) -+ mixer->platform_cleanup(&tsc->spi->dev); -+ -+ if (mixer->mixer_gpios != NULL) -+ kfree(mixer->mixer_gpios); -+} -+ -+MODULE_AUTHOR("Jarkko Nikula <jarkko.nikula@nokia.com>"); -+MODULE_LICENSE("GPL"); ---- /dev/null -+++ b/include/linux/spi/tsc2301.h -@@ -0,0 +1,208 @@ -+#ifndef _LINUX_SPI_TSC2301_H -+#define _LINUX_SPI_TSC2301_H -+ -+#include <linux/types.h> -+#include <linux/timer.h> -+ -+struct tsc2301_platform_data { -+ /* -+ * Keypad -+ */ -+ s16 reset_gpio; -+ s16 keyb_int; -+ s16 keymap[16]; /* Set a key to a negative value if not used */ -+ unsigned kp_rep:1; /* Enable keypad repeating */ -+ char *keyb_name; /* Keyboard device name */ -+ -+ /* -+ * Touchscreen -+ */ -+ s16 dav_int; -+ u16 ts_x_plate_ohm; -+ u32 ts_stab_time; /* voltage settling time */ -+ u8 ts_hw_avg; /* HW assiseted averaging. Can be -+ 0, 4, 8, 16 samples per reading */ -+ u32 ts_max_pressure;/* Samples with bigger pressure value will -+ be ignored, since the corresponding X, Y -+ values are unreliable */ -+ u32 ts_touch_pressure; /* Pressure limit until we report a -+ touch event. After that we switch -+ to ts_max_pressure. */ -+ u32 ts_pressure_fudge; -+ u32 ts_x_max; -+ u32 ts_x_fudge; -+ u32 ts_y_max; -+ u32 ts_y_fudge; -+ -+ /* -+ * Audio -+ */ -+ unsigned pll_pdc:4; -+ unsigned pll_a:4; -+ unsigned pll_n:4; -+ unsigned pll_output:1; /* Output PLL on GPIO_0 */ -+ -+ unsigned mclk_ratio:2; -+ unsigned i2s_sample_rate:4; -+ unsigned i2s_format:2; -+ /* Mask for audio blocks to be powered down */ -+ u16 power_down_blocks; -+ -+ /* Called after codec has been initialized, can be NULL */ -+ int (* codec_init)(struct device *tsc2301_dev); -+ /* Called when codec is being removed, can be NULL */ -+ void (* codec_cleanup)(struct device *tsc2301_dev); -+ int (*enable_clock)(struct device *dev); -+ void (*disable_clock)(struct device *dev); -+ -+ const struct tsc2301_mixer_gpio { -+ const char *name; -+ unsigned gpio:4; -+ unsigned inverted:1; -+ unsigned def_enable:1; /* enable by default */ -+ unsigned deactivate_on_pd:1; /* power-down flag */ -+ } *mixer_gpios; -+ int n_mixer_gpios; -+}; -+ -+struct tsc2301_kp; -+struct tsc2301_ts; -+struct tsc2301_mixer; -+ -+struct tsc2301 { -+ struct spi_device *spi; -+ -+ s16 reset_gpio; -+ u16 config2_shadow; -+ -+ struct tsc2301_kp *kp; -+ struct tsc2301_ts *ts; -+ struct tsc2301_mixer *mixer; -+ -+ int (*enable_clock)(struct device *dev); -+ void (*disable_clock)(struct device *dev); -+}; -+ -+ -+#define TSC2301_HZ 33000000 -+ -+#define TSC2301_REG(page, addr) (((page) << 11) | ((addr) << 5)) -+#define TSC2301_REG_TO_PAGE(reg) (((reg) >> 11) & 0x03) -+#define TSC2301_REG_TO_ADDR(reg) (((reg) >> 5) & 0x1f) -+ -+#define TSC2301_REG_X TSC2301_REG(0, 0) -+#define TSC2301_REG_Y TSC2301_REG(0, 1) -+#define TSC2301_REG_Z1 TSC2301_REG(0, 2) -+#define TSC2301_REG_Z2 TSC2301_REG(0, 3) -+#define TSC2301_REG_KPDATA TSC2301_REG(0, 4) -+#define TSC2301_REG_ADC TSC2301_REG(1, 0) -+#define TSC2301_REG_KEY TSC2301_REG(1, 1) -+#define TSC2301_REG_DAC TSC2301_REG(1, 2) -+#define TSC2301_REG_REF TSC2301_REG(1, 3) -+#define TSC2301_REG_RESET TSC2301_REG(1, 4) -+#define TSC2301_REG_CONFIG TSC2301_REG(1, 5) -+#define TSC2301_REG_CONFIG2 TSC2301_REG(1, 6) -+#define TSC2301_REG_KPMASK TSC2301_REG(1, 16) -+#define TSC2301_REG_AUDCNTL TSC2301_REG(2, 0) -+#define TSC2301_REG_ADCVOL TSC2301_REG(2, 1) -+#define TSC2301_REG_DACVOL TSC2301_REG(2, 2) -+#define TSC2301_REG_BPVOL TSC2301_REG(2, 3) -+#define TSC2301_REG_KEYCTL TSC2301_REG(2, 4) -+#define TSC2301_REG_PD_MISC TSC2301_REG(2, 5) -+#define TSC2301_REG_GPIO TSC2301_REG(2, 6) -+#define TSC2301_REG_ADCLKCFG TSC2301_REG(2, 27) -+ -+#define TSC2301_REG_PD_MISC_APD (1 << 15) -+#define TSC2301_REG_PD_MISC_AVPD (1 << 14) -+#define TSC2301_REG_PD_MISC_ABPD (1 << 13) -+#define TSC2301_REG_PD_MISC_HAPD (1 << 12) -+#define TSC2301_REG_PD_MISC_MOPD (1 << 11) -+#define TSC2301_REG_PD_MISC_DAPD (1 << 10) -+#define TSC2301_REG_PD_MISC_ADPDL (1 << 9) -+#define TSC2301_REG_PD_MISC_ADPDR (1 << 8) -+#define TSC2301_REG_PD_MISC_PDSTS (1 << 7) -+#define TSC2301_REG_PD_MISC_MIBPD (1 << 6) -+#define TSC2301_REG_PD_MISC_OTSYN (1 << 2) -+ -+/* I2S sample rate */ -+#define TSC2301_I2S_SR_48000 0x00 -+#define TSC2301_I2S_SR_44100 0x01 -+#define TSC2301_I2S_SR_32000 0x02 -+#define TSC2301_I2S_SR_24000 0x03 -+#define TSC2301_I2S_SR_22050 0x04 -+#define TSC2301_I2S_SR_16000 0x05 -+#define TSC2301_I2S_SR_12000 0x06 -+#define TSC2301_I2S_SR_11050 0x07 -+#define TSC2301_I2S_SR_8000 0x08 -+ -+/* 16-bit, MSB-first. DAC Right-Justified, ADC Left-Justified */ -+#define TSC2301_I2S_FORMAT0 0x00 -+/* 20-bit, MSB-first. DAC Right-Justified, ADC Left-Justified */ -+#define TSC2301_I2S_FORMAT1 0x01 -+/* 20-bit, MSB-first. DAC Left-Justified, ADC Left-Justified */ -+#define TSC2301_I2S_FORMAT2 0x02 -+/* 20-bit, MSB-first */ -+#define TSC2301_I2S_FORMAT3 0x03 -+ -+/* Master Clock Ratio */ -+#define TSC2301_MCLK_256xFS 0x00 /* default */ -+#define TSC2301_MCLK_384xFS 0x01 -+#define TSC2301_MCLK_512xFS 0x02 -+ -+ -+extern u16 tsc2301_read_reg(struct tsc2301 *tsc, int reg); -+extern void tsc2301_write_reg(struct tsc2301 *tsc, int reg, u16 val); -+extern void tsc2301_write_kbc(struct tsc2301 *tsc, int val); -+extern void tsc2301_write_pll(struct tsc2301 *tsc, int pll_n, int pll_a, -+ int pll_pdc, int pct_e, int pll_o); -+extern void tsc2301_read_buf(struct tsc2301 *tsc, int reg, u16 *buf, int len); -+ -+#define TSC2301_DECL_MOD(module) \ -+extern int tsc2301_##module##_init(struct tsc2301 *tsc, \ -+ struct tsc2301_platform_data *pdata); \ -+extern void tsc2301_##module##_exit(struct tsc2301 *tsc); \ -+extern int tsc2301_##module##_suspend(struct tsc2301 *tsc); \ -+extern void tsc2301_##module##_resume(struct tsc2301 *tsc); -+ -+#define TSC2301_DECL_EMPTY_MOD(module) \ -+static inline int tsc2301_##module##_init(struct tsc2301 *tsc, \ -+ struct tsc2301_platform_data *pdata) \ -+{ \ -+ return 0; \ -+} \ -+static inline void tsc2301_##module##_exit(struct tsc2301 *tsc) {} \ -+static inline int tsc2301_##module##_suspend(struct tsc2301 *tsc) \ -+{ \ -+ return 0; \ -+} \ -+static inline void tsc2301_##module##_resume(struct tsc2301 *tsc) {} -+ -+#ifdef CONFIG_KEYBOARD_TSC2301 -+TSC2301_DECL_MOD(kp) -+void tsc2301_kp_restart(struct tsc2301 *tsc); -+#else -+TSC2301_DECL_EMPTY_MOD(kp) -+static inline void tsc2301_kp_restart(struct tsc2301 *tsc) {} -+#endif -+ -+#ifdef CONFIG_TOUCHSCREEN_TSC2301 -+TSC2301_DECL_MOD(ts) -+#else -+TSC2301_DECL_EMPTY_MOD(ts) -+#endif -+ -+#ifdef CONFIG_SPI_TSC2301_AUDIO -+TSC2301_DECL_MOD(mixer) -+extern void tsc2301_mixer_set_power(struct device *tsc_dev, int dac, int adc); -+ -+struct snd_card; -+extern int tsc2301_mixer_register_controls(struct device *tsc_dev, -+ struct snd_card *card); -+#else -+TSC2301_DECL_EMPTY_MOD(mixer) -+#endif -+ -+extern void tsc2301_mixer_enable_mclk(struct device *tsc_dev); -+extern void tsc2301_mixer_disable_mclk(struct device *tsc_dev); -+ -+#endif |