source "drivers/staging/mei/Kconfig"
+source "drivers/staging/nvec/Kconfig"
+
endif # !STAGING_EXCLUDE_BUILD
endif # STAGING
obj-$(CONFIG_TOUCHSCREEN_SYNAPTICS_I2C_RMI4) += ste_rmi4/
obj-$(CONFIG_DRM_PSB) += gma500/
obj-$(CONFIG_INTEL_MEI) += mei/
+obj-$(CONFIG_MFD_NVEC) += nvec/
--- /dev/null
+config MFD_NVEC
+ bool "NV Tegra Embedded Controller SMBus Interface"
+ depends on I2C && GPIOLIB && ARCH_TEGRA
+ help
+ Say Y here to enable support for a nVidia compliant embedded
+ controller.
+
+config KEYBOARD_NVEC
+ bool "Keyboard on nVidia compliant EC"
+ depends on MFD_NVEC
+ help
+ Say Y here to enable support for a keyboard connected to
+ a nVidia compliant embedded controller.
+
+config SERIO_NVEC_PS2
+ bool "PS2 on nVidia EC"
+ depends on MFD_NVEC
+ help
+ Say Y here to enable support for a Touchpad / Mouse connected
+ to a nVidia compliant embedded controller.
+
+config NVEC_POWER
+ bool "NVEC charger and battery"
+ depends on MFD_NVEC
+ help
+ Say Y to enable support for battery and charger interface for
+ nVidia compliant embedded controllers.
--- /dev/null
+obj-$(CONFIG_SERIO_NVEC_PS2) += nvec_ps2.o
+obj-$(CONFIG_MFD_NVEC) += nvec.o
+obj-$(CONFIG_NVEC_POWER) += nvec_power.o
+obj-$(CONFIG_KEYBOARD_NVEC) += nvec_kbd.o
--- /dev/null
+NVEC: An NVidia compliant Embedded Controller Protocol Implemenation
+
+This is an implementation of the NVEC protocol used to communicate with an
+embedded controller (EC) via I2C bus. The EC is an I2C master while the host
+processor is the I2C slave. Requests from the host processor to the EC are
+started by triggering a gpio line.
+
+There is no written documentation of the protocol available to the public,
+but the source code[1] of the published nvec reference drivers can be a guide.
+This driver is currently only used by the AC100 project[2], but it is likely,
+that other Tegra boards (not yet mainlined, if ever) also use it.
+
+[1] e.g. http://nv-tegra.nvidia.com/gitweb/?p=linux-2.6.git;a=tree;f=arch/arm/mach-tegra/nvec;hb=android-tegra-2.6.32
+[2] http://gitorious.org/ac100, http://launchpad.net/ac100
--- /dev/null
+ToDo list (incomplete, unordered)
+ - convert mouse, keyboard, and power to platform devices
+ - add copyright / driver author / license
+ - add compile as module support
+ - move nvec devices to mfd cells?
+ - adjust to kernel style
+
+
--- /dev/null
+/*
+ * drivers/input/keyboard/tegra-nvec.c
+ *
+ * Keyboard class input driver for keyboards connected to an NvEc compliant
+ * embedded controller
+ *
+ * Copyright (c) 2009, NVIDIA 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+static unsigned short code_tab_102us[] = {
+ KEY_GRAVE, // 0x00
+ KEY_ESC,
+ KEY_1,
+ KEY_2,
+ KEY_3,
+ KEY_4,
+ KEY_5,
+ KEY_6,
+ KEY_7,
+ KEY_8,
+ KEY_9,
+ KEY_0,
+ KEY_MINUS,
+ KEY_EQUAL,
+ KEY_BACKSPACE,
+ KEY_TAB,
+ KEY_Q, // 0x10
+ KEY_W,
+ KEY_E,
+ KEY_R,
+ KEY_T,
+ KEY_Y,
+ KEY_U,
+ KEY_I,
+ KEY_O,
+ KEY_P,
+ KEY_LEFTBRACE,
+ KEY_RIGHTBRACE,
+ KEY_ENTER,
+ KEY_LEFTCTRL,
+ KEY_A,
+ KEY_S,
+ KEY_D, // 0x20
+ KEY_F,
+ KEY_G,
+ KEY_H,
+ KEY_J,
+ KEY_K,
+ KEY_L,
+ KEY_SEMICOLON,
+ KEY_APOSTROPHE,
+ KEY_GRAVE,
+ KEY_LEFTSHIFT,
+ KEY_BACKSLASH,
+ KEY_Z,
+ KEY_X,
+ KEY_C,
+ KEY_V,
+ KEY_B, // 0x30
+ KEY_N,
+ KEY_M,
+ KEY_COMMA,
+ KEY_DOT,
+ KEY_SLASH,
+ KEY_RIGHTSHIFT,
+ KEY_KPASTERISK,
+ KEY_LEFTALT,
+ KEY_SPACE,
+ KEY_CAPSLOCK,
+ KEY_F1,
+ KEY_F2,
+ KEY_F3,
+ KEY_F4,
+ KEY_F5,
+ KEY_F6, // 0x40
+ KEY_F7,
+ KEY_F8,
+ KEY_F9,
+ KEY_F10,
+ KEY_FN,
+ 0, //VK_SCROLL
+ KEY_KP7,
+ KEY_KP8,
+ KEY_KP9,
+ KEY_KPMINUS,
+ KEY_KP4,
+ KEY_KP5,
+ KEY_KP6,
+ KEY_KPPLUS,
+ KEY_KP1,
+ KEY_KP2, // 0x50
+ KEY_KP3,
+ KEY_KP0,
+ KEY_KPDOT,
+ KEY_MENU, //VK_SNAPSHOT
+ KEY_POWER,
+ KEY_102ND, //VK_OEM_102 henry+ 0x2B (43) BACKSLASH have been used,change to use 0X56 (86)
+ KEY_F11, //VK_F11
+ KEY_F12, //VK_F12
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0, // 60
+ 0,
+ 0,
+ KEY_SEARCH, // add search key map
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0, // 70
+ 0,
+ 0,
+ KEY_KP5, //73 for JP keyboard '\' key, report 0x4c
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ KEY_KP9, //7d for JP keyboard '|' key, report 0x49
+};
+
+static unsigned short extcode_tab_us102[] = {
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0, // 0xE0 0x10
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0, //VK_MEDIA_NEXT_TRACK,
+ 0,
+ 0,
+ 0, //VK_RETURN,
+ KEY_RIGHTCTRL, //VK_RCONTROL,
+ 0,
+ 0,
+ KEY_MUTE, // 0xE0 0x20
+ 0, //VK_LAUNCH_APP1
+ 0, //VK_MEDIA_PLAY_PAUSE
+ 0,
+ 0, //VK_MEDIA_STOP
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ KEY_VOLUMEUP, // 0xE0 0x30
+ 0,
+ 0, //VK_BROWSER_HOME
+ 0,
+ 0,
+ KEY_KPSLASH, //VK_DIVIDE
+ 0,
+ KEY_SYSRQ, //VK_SNAPSHOT
+ KEY_RIGHTALT, //VK_RMENU
+ 0, //VK_OEM_NV_BACKLIGHT_UP
+ 0, //VK_OEM_NV_BACKLIGHT_DN
+ 0, //VK_OEM_NV_BACKLIGHT_AUTOTOGGLE
+ 0, //VK_OEM_NV_POWER_INFO
+ 0, //VK_OEM_NV_WIFI_TOGGLE
+ 0, //VK_OEM_NV_DISPLAY_SELECT
+ 0, //VK_OEM_NV_AIRPLANE_TOGGLE
+ 0, //0xE0 0x40
+ KEY_LEFT, //VK_OEM_NV_RESERVED henry+ for JP keyboard
+ 0, //VK_OEM_NV_RESERVED
+ 0, //VK_OEM_NV_RESERVED
+ 0, //VK_OEM_NV_RESERVED
+ 0, //VK_OEM_NV_RESERVED
+ KEY_CANCEL,
+ KEY_HOME,
+ KEY_UP,
+ KEY_PAGEUP, //VK_PRIOR
+ 0,
+ KEY_LEFT,
+ 0,
+ KEY_RIGHT,
+ 0,
+ KEY_END,
+ KEY_DOWN, // 0xE0 0x50
+ KEY_PAGEDOWN, //VK_NEXT
+ KEY_INSERT,
+ KEY_DELETE,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ KEY_LEFTMETA, //VK_LWIN
+ 0, //VK_RWIN
+ KEY_ESC, //VK_APPS
+ KEY_KPMINUS, //for power button workaround
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0, //VK_BROWSER_SEARCH
+ 0, //VK_BROWSER_FAVORITES
+ 0, //VK_BROWSER_REFRESH
+ 0, //VK_BROWSER_STOP
+ 0, //VK_BROWSER_FORWARD
+ 0, //VK_BROWSER_BACK
+ 0, //VK_LAUNCH_APP2
+ 0, //VK_LAUNCH_MAIL
+ 0, //VK_LAUNCH_MEDIA_SELECT
+};
+
+static unsigned short* code_tabs[] = {code_tab_102us, extcode_tab_us102 };
--- /dev/null
+// #define DEBUG
+
+/* ToDo list (incomplete, unorderd)
+ - convert mouse, keyboard, and power to platform devices
+*/
+
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <linux/completion.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/slab.h>
+#include <linux/gpio.h>
+#include <linux/serio.h>
+#include <linux/delay.h>
+#include <linux/input.h>
+#include <linux/workqueue.h>
+#include <linux/clk.h>
+#include <mach/iomap.h>
+#include <mach/clk.h>
+#include <linux/semaphore.h>
+#include <linux/list.h>
+#include <linux/notifier.h>
+#include <linux/workqueue.h>
+#include <linux/platform_device.h>
+#include "nvec.h"
+
+static unsigned char EC_DISABLE_EVENT_REPORTING[] = {'\x04','\x00','\x00'};
+static unsigned char EC_ENABLE_EVENT_REPORTING[] = {'\x04','\x00','\x01'};
+static unsigned char EC_GET_FIRMWARE_VERSION[] = {'\x07','\x15'};
+
+static struct nvec_chip *nvec_power_handle;
+
+int nvec_register_notifier(struct nvec_chip *nvec, struct notifier_block *nb,
+ unsigned int events)
+{
+ return atomic_notifier_chain_register(&nvec->notifier_list, nb);
+}
+EXPORT_SYMBOL_GPL(nvec_register_notifier);
+
+static int nvec_status_notifier(struct notifier_block *nb, unsigned long event_type,
+ void *data)
+{
+ unsigned char *msg = (unsigned char *)data;
+ int i;
+
+ if(event_type != NVEC_CNTL)
+ return NOTIFY_DONE;
+
+ printk("unhandled msg type %ld, payload: ", event_type);
+ for (i = 0; i < msg[1]; i++)
+ printk("%0x ", msg[i+2]);
+ printk("\n");
+
+ return NOTIFY_OK;
+}
+
+void nvec_write_async(struct nvec_chip *nvec, unsigned char *data, short size)
+{
+ struct nvec_msg *msg = kzalloc(sizeof(struct nvec_msg), GFP_NOWAIT);
+
+ msg->data = kzalloc(size, GFP_NOWAIT);
+ msg->data[0] = size;
+ memcpy(msg->data + 1, data, size);
+ msg->size = size + 1;
+ msg->pos = 0;
+ INIT_LIST_HEAD(&msg->node);
+
+ list_add_tail(&msg->node, &nvec->tx_data);
+
+ gpio_set_value(nvec->gpio, 0);
+}
+EXPORT_SYMBOL(nvec_write_async);
+
+static void nvec_request_master(struct work_struct *work)
+{
+ struct nvec_chip *nvec = container_of(work, struct nvec_chip, tx_work);
+
+ if(!list_empty(&nvec->tx_data)) {
+ gpio_set_value(nvec->gpio, 0);
+ }
+}
+
+static int parse_msg(struct nvec_chip *nvec, struct nvec_msg *msg)
+{
+ int i;
+
+ if((msg->data[0] & 1<<7) == 0 && msg->data[3]) {
+ dev_err(nvec->dev, "ec responded %02x %02x %02x %02x\n", msg->data[0],
+ msg->data[1], msg->data[2], msg->data[3]);
+ return -EINVAL;
+ }
+
+ if ((msg->data[0] >> 7 ) == 1 && (msg->data[0] & 0x0f) == 5)
+ {
+ dev_warn(nvec->dev, "ec system event ");
+ for (i=0; i < msg->data[1]; i++)
+ dev_warn(nvec->dev, "%02x ", msg->data[2+i]);
+ dev_warn(nvec->dev, "\n");
+ }
+
+ atomic_notifier_call_chain(&nvec->notifier_list, msg->data[0] & 0x8f, msg->data);
+
+ return 0;
+}
+
+static struct nvec_msg *nvec_write_sync(struct nvec_chip *nvec, unsigned char *data, short size)
+{
+ down(&nvec->sync_write_mutex);
+
+ nvec->sync_write_pending = (data[1] << 8) + data[0];
+ nvec_write_async(nvec, data, size);
+
+ dev_dbg(nvec->dev, "nvec_sync_write: 0x%04x\n", nvec->sync_write_pending);
+ wait_for_completion(&nvec->sync_write);
+ dev_dbg(nvec->dev, "nvec_sync_write: pong!\n");
+
+ up(&nvec->sync_write_mutex);
+
+ return nvec->last_sync_msg;
+}
+
+/* RX worker */
+static void nvec_dispatch(struct work_struct *work)
+{
+ struct nvec_chip *nvec = container_of(work, struct nvec_chip, rx_work);
+ struct nvec_msg *msg;
+
+ while(!list_empty(&nvec->rx_data))
+ {
+ msg = list_first_entry(&nvec->rx_data, struct nvec_msg, node);
+ list_del_init(&msg->node);
+
+ if(nvec->sync_write_pending == (msg->data[2] << 8) + msg->data[0])
+ {
+ dev_dbg(nvec->dev, "sync write completed!\n");
+ nvec->sync_write_pending = 0;
+ nvec->last_sync_msg = msg;
+ complete(&nvec->sync_write);
+ } else {
+ parse_msg(nvec, msg);
+ if((!msg) || (!msg->data))
+ dev_warn(nvec->dev, "attempt access zero pointer");
+ else {
+ kfree(msg->data);
+ kfree(msg);
+ }
+ }
+ }
+}
+
+static irqreturn_t i2c_interrupt(int irq, void *dev)
+{
+ unsigned long status;
+ unsigned long received;
+ unsigned char to_send;
+ struct nvec_msg *msg;
+ struct nvec_chip *nvec = (struct nvec_chip *)dev;
+ unsigned char *i2c_regs = nvec->i2c_regs;
+
+ status = readl(i2c_regs + I2C_SL_STATUS);
+
+ if(!(status & I2C_SL_IRQ))
+ {
+ dev_warn(nvec->dev, "nvec Spurious IRQ\n");
+ //Yup, handled. ahum.
+ goto handled;
+ }
+ if(status & END_TRANS && !(status & RCVD))
+ {
+ //Reenable IRQ only when even has been sent
+ //printk("Write sequence ended !\n");
+ //parse_msg(nvec);
+ nvec->state = NVEC_WAIT;
+ if(nvec->rx->size > 1)
+ {
+ list_add_tail(&nvec->rx->node, &nvec->rx_data);
+ schedule_work(&nvec->rx_work);
+ } else {
+ kfree(nvec->rx->data);
+ kfree(nvec->rx);
+ }
+ return IRQ_HANDLED;
+ } else if(status & RNW)
+ {
+ // Work around for AP20 New Slave Hw Bug. Give 1us extra.
+ // nvec/smbus/nvec_i2c_transport.c in NV`s crap for reference
+ if(status & RCVD)
+ udelay(3);
+
+ if(status & RCVD)
+ {
+ nvec->state = NVEC_WRITE;
+ //Master wants something from us. New communication
+// dev_dbg(nvec->dev, "New read comm!\n");
+ } else {
+ //Master wants something from us from a communication we've already started
+// dev_dbg(nvec->dev, "Read comm cont !\n");
+ }
+ //if(msg_pos<msg_size) {
+ if(list_empty(&nvec->tx_data))
+ {
+ dev_err(nvec->dev, "nvec empty tx - sending no-op\n");
+ to_send = 0x8a;
+ nvec_write_async(nvec, "\x07\x02", 2);
+// to_send = 0x01;
+ } else {
+ msg = list_first_entry(&nvec->tx_data, struct nvec_msg, node);
+ if(msg->pos < msg->size) {
+ to_send = msg->data[msg->pos];
+ msg->pos++;
+ } else {
+ dev_err(nvec->dev, "nvec crap! %d\n", msg->size);
+ to_send = 0x01;
+ }
+
+ if(msg->pos >= msg->size)
+ {
+ list_del_init(&msg->node);
+ kfree(msg->data);
+ kfree(msg);
+ schedule_work(&nvec->tx_work);
+ nvec->state = NVEC_WAIT;
+ }
+ }
+ writel(to_send, i2c_regs + I2C_SL_RCVD);
+
+ gpio_set_value(nvec->gpio, 1);
+
+ dev_dbg(nvec->dev, "nvec sent %x\n", to_send);
+
+ goto handled;
+ } else {
+ received = readl(i2c_regs + I2C_SL_RCVD);
+ //Workaround?
+ if(status & RCVD) {
+ writel(0, i2c_regs + I2C_SL_RCVD);
+ goto handled;
+ }
+
+ if (nvec->state == NVEC_WAIT)
+ {
+ nvec->state = NVEC_READ;
+ msg = kzalloc(sizeof(struct nvec_msg), GFP_NOWAIT);
+ msg->data = kzalloc(32, GFP_NOWAIT);
+ INIT_LIST_HEAD(&msg->node);
+ nvec->rx = msg;
+ } else
+ msg = nvec->rx;
+
+ BUG_ON(msg->pos > 32);
+
+ msg->data[msg->pos] = received;
+ msg->pos++;
+ msg->size = msg->pos;
+ dev_dbg(nvec->dev, "Got %02lx from Master (pos: %d)!\n", received, msg->pos);
+ }
+handled:
+ return IRQ_HANDLED;
+}
+
+static int __devinit nvec_add_subdev(struct nvec_chip *nvec, struct nvec_subdev *subdev)
+{
+ struct platform_device *pdev;
+
+ pdev = platform_device_alloc(subdev->name, subdev->id);
+ pdev->dev.parent = nvec->dev;
+ pdev->dev.platform_data = subdev->platform_data;
+
+ return platform_device_add(pdev);
+}
+
+static void tegra_init_i2c_slave(struct nvec_platform_data *pdata, unsigned char *i2c_regs,
+ struct clk *i2c_clk)
+{
+ u32 val;
+
+ clk_enable(i2c_clk);
+ tegra_periph_reset_assert(i2c_clk);
+ udelay(2);
+ tegra_periph_reset_deassert(i2c_clk);
+
+ writel(pdata->i2c_addr>>1, i2c_regs + I2C_SL_ADDR1);
+ writel(0, i2c_regs + I2C_SL_ADDR2);
+
+ writel(0x1E, i2c_regs + I2C_SL_DELAY_COUNT);
+ val = I2C_CNFG_NEW_MASTER_SFM | I2C_CNFG_PACKET_MODE_EN |
+ (0x2 << I2C_CNFG_DEBOUNCE_CNT_SHIFT);
+ writel(val, i2c_regs + I2C_CNFG);
+ writel(I2C_SL_NEWL, i2c_regs + I2C_SL_CNFG);
+
+ clk_disable(i2c_clk);
+}
+
+static void nvec_power_off(void)
+{
+ nvec_write_async(nvec_power_handle, EC_DISABLE_EVENT_REPORTING, 3);
+ nvec_write_async(nvec_power_handle, "\x04\x01", 2);
+}
+
+static int __devinit tegra_nvec_probe(struct platform_device *pdev)
+{
+ int err, i, ret;
+ struct clk *i2c_clk;
+ struct nvec_platform_data *pdata = pdev->dev.platform_data;
+ struct nvec_chip *nvec;
+ struct nvec_msg *msg;
+ unsigned char *i2c_regs;
+
+ nvec = kzalloc(sizeof(struct nvec_chip), GFP_KERNEL);
+ if(nvec == NULL) {
+ dev_err(&pdev->dev, "failed to reserve memory\n");
+ return -ENOMEM;
+ }
+ platform_set_drvdata(pdev, nvec);
+ nvec->dev = &pdev->dev;
+ nvec->gpio = pdata->gpio;
+ nvec->irq = pdata->irq;
+
+/*
+ i2c_clk=clk_get_sys(NULL, "i2c");
+ if(IS_ERR_OR_NULL(i2c_clk))
+ printk(KERN_ERR"No such clock tegra-i2c.2\n");
+ else
+ clk_enable(i2c_clk);
+*/
+ i2c_regs = ioremap(pdata->base, pdata->size);
+ if(!i2c_regs) {
+ dev_err(nvec->dev, "failed to ioremap registers\n");
+ goto failed;
+ }
+
+ nvec->i2c_regs = i2c_regs;
+
+ i2c_clk = clk_get_sys(pdata->clock, NULL);
+ if(IS_ERR_OR_NULL(i2c_clk)) {
+ dev_err(nvec->dev, "failed to get clock tegra-i2c.2\n");
+ goto failed;
+ }
+
+ tegra_init_i2c_slave(pdata, i2c_regs, i2c_clk);
+
+ err = request_irq(nvec->irq, i2c_interrupt, IRQF_DISABLED, "nvec", nvec);
+ if(err) {
+ dev_err(nvec->dev, "couldn't request irq");
+ goto failed;
+ }
+
+ clk_enable(i2c_clk);
+ clk_set_rate(i2c_clk, 8*80000);
+
+ /* Set the gpio to low when we've got something to say */
+ err = gpio_request(nvec->gpio, "nvec gpio");
+ if(err < 0)
+ dev_err(nvec->dev, "couldn't request gpio\n");
+
+ tegra_gpio_enable(nvec->gpio);
+ gpio_direction_output(nvec->gpio, 1);
+ gpio_set_value(nvec->gpio, 1);
+
+ ATOMIC_INIT_NOTIFIER_HEAD(&nvec->notifier_list);
+
+ init_completion(&nvec->sync_write);
+ sema_init(&nvec->sync_write_mutex, 1);
+ INIT_LIST_HEAD(&nvec->tx_data);
+ INIT_LIST_HEAD(&nvec->rx_data);
+ INIT_WORK(&nvec->rx_work, nvec_dispatch);
+ INIT_WORK(&nvec->tx_work, nvec_request_master);
+
+ /* enable event reporting */
+ nvec_write_async(nvec, EC_ENABLE_EVENT_REPORTING,
+ sizeof(EC_ENABLE_EVENT_REPORTING));
+
+ nvec_kbd_init(nvec);
+#ifdef CONFIG_SERIO_NVEC_PS2
+ nvec_ps2(nvec);
+#endif
+
+ /* setup subdevs */
+ for (i = 0; i < pdata->num_subdevs; i++) {
+ ret = nvec_add_subdev(nvec, &pdata->subdevs[i]);
+ }
+
+ nvec->nvec_status_notifier.notifier_call = nvec_status_notifier;
+ nvec_register_notifier(nvec, &nvec->nvec_status_notifier, 0);
+
+ nvec_power_handle = nvec;
+ pm_power_off = nvec_power_off;
+
+ /* Get Firmware Version */
+ msg = nvec_write_sync(nvec, EC_GET_FIRMWARE_VERSION,
+ sizeof(EC_GET_FIRMWARE_VERSION));
+
+ dev_warn(nvec->dev, "ec firmware version %02x.%02x.%02x / %02x\n",
+ msg->data[4], msg->data[5], msg->data[6], msg->data[7]);
+
+ kfree(msg->data);
+ kfree(msg);
+
+ /* unmute speakers? */
+ nvec_write_async(nvec, "\x0d\x10\x59\x94", 4);
+
+ /* enable lid switch event */
+ nvec_write_async(nvec, "\x01\x01\x01\x00\x00\x02\x00", 7);
+
+ /* enable power button event */
+ nvec_write_async(nvec, "\x01\x01\x01\x00\x00\x80\x00", 7);
+
+ return 0;
+
+failed:
+ kfree(nvec);
+ return -ENOMEM;
+}
+
+static int __devexit tegra_nvec_remove(struct platform_device *pdev)
+{
+ // TODO: unregister
+ return 0;
+}
+
+#ifdef CONFIG_PM
+
+static int tegra_nvec_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ struct nvec_chip *nvec = platform_get_drvdata(pdev);
+
+ dev_dbg(nvec->dev, "suspending\n");
+ nvec_write_async(nvec, EC_DISABLE_EVENT_REPORTING, 3);
+ nvec_write_async(nvec, "\x04\x02", 2);
+
+ return 0;
+}
+
+static int tegra_nvec_resume(struct platform_device *pdev) {
+
+ struct nvec_chip *nvec = platform_get_drvdata(pdev);
+
+ dev_dbg(nvec->dev, "resuming\n");
+ nvec_write_async(nvec, EC_ENABLE_EVENT_REPORTING, 3);
+
+ return 0;
+}
+
+#else
+#define tegra_nvec_suspend NULL
+#define tegra_nvec_resume NULL
+#endif
+
+static struct platform_driver nvec_device_driver =
+{
+ .probe = tegra_nvec_probe,
+ .remove = __devexit_p(tegra_nvec_remove),
+ .suspend = tegra_nvec_suspend,
+ .resume = tegra_nvec_resume,
+ .driver = {
+ .name = "nvec",
+ .owner = THIS_MODULE,
+ }
+};
+
+static int __init tegra_nvec_init(void)
+{
+ return platform_driver_register(&nvec_device_driver);
+}
+
+module_init(tegra_nvec_init);
+MODULE_ALIAS("platform:nvec");
--- /dev/null
+#ifndef __LINUX_MFD_NVEC
+#define __LINUX_MFD_NVEC
+
+#include <linux/semaphore.h>
+
+typedef enum {
+ NVEC_2BYTES,
+ NVEC_3BYTES,
+ NVEC_VAR_SIZE
+} nvec_size;
+
+typedef enum {
+ NOT_REALLY,
+ YES,
+ NOT_AT_ALL,
+} how_care;
+
+typedef enum {
+ NVEC_SYS=1,
+ NVEC_BAT,
+ NVEC_KBD = 5,
+ NVEC_PS2,
+ NVEC_CNTL,
+ NVEC_KB_EVT = 0x80,
+ NVEC_PS2_EVT
+} nvec_event;
+
+typedef enum {
+ NVEC_WAIT,
+ NVEC_READ,
+ NVEC_WRITE
+} nvec_state;
+
+struct nvec_msg {
+ unsigned char *data;
+ unsigned short size;
+ unsigned short pos;
+ struct list_head node;
+};
+
+struct nvec_subdev {
+ const char *name;
+ void *platform_data;
+ int id;
+};
+
+struct nvec_platform_data {
+ int num_subdevs;
+ int i2c_addr;
+ int gpio;
+ int irq;
+ int base;
+ int size;
+ char clock[16];
+ struct nvec_subdev *subdevs;
+};
+
+struct nvec_chip {
+ struct device *dev;
+ int gpio;
+ int irq;
+ unsigned char *i2c_regs;
+ nvec_state state;
+ struct atomic_notifier_head notifier_list;
+ struct list_head rx_data, tx_data;
+ struct notifier_block nvec_status_notifier;
+ struct work_struct rx_work, tx_work;
+ struct nvec_msg *rx, *tx;
+
+/* sync write stuff */
+ struct semaphore sync_write_mutex;
+ struct completion sync_write;
+ u16 sync_write_pending;
+ struct nvec_msg *last_sync_msg;
+};
+
+extern void nvec_write_async(struct nvec_chip *nvec, unsigned char *data, short size);
+
+extern int nvec_register_notifier(struct nvec_chip *nvec,
+ struct notifier_block *nb, unsigned int events);
+
+extern int nvec_unregister_notifier(struct device *dev,
+ struct notifier_block *nb, unsigned int events);
+
+const char *nvec_send_msg(unsigned char *src, unsigned char *dst_size, how_care care_resp, void (*rt_handler)(unsigned char *data));
+
+extern int nvec_ps2(struct nvec_chip *nvec);
+extern int nvec_kbd_init(struct nvec_chip *nvec);
+
+#define I2C_CNFG 0x00
+#define I2C_CNFG_PACKET_MODE_EN (1<<10)
+#define I2C_CNFG_NEW_MASTER_SFM (1<<11)
+#define I2C_CNFG_DEBOUNCE_CNT_SHIFT 12
+
+#define I2C_SL_CNFG 0x20
+#define I2C_SL_NEWL (1<<2)
+#define I2C_SL_NACK (1<<1)
+#define I2C_SL_RESP (1<<0)
+#define I2C_SL_IRQ (1<<3)
+#define END_TRANS (1<<4)
+#define RCVD (1<<2)
+#define RNW (1<<1)
+
+#define I2C_SL_RCVD 0x24
+#define I2C_SL_STATUS 0x28
+#define I2C_SL_ADDR1 0x2c
+#define I2C_SL_ADDR2 0x30
+#define I2C_SL_DELAY_COUNT 0x3c
+
+#endif
--- /dev/null
+#include <linux/slab.h>
+#include <linux/input.h>
+#include <linux/delay.h>
+#include "nvec-keytable.h"
+#include "nvec.h"
+
+#define ACK_KBD_EVENT {'\x05','\xed','\x01'}
+
+static unsigned char keycodes[ARRAY_SIZE(code_tab_102us)
+ + ARRAY_SIZE(extcode_tab_us102)];
+
+struct nvec_keys {
+ struct input_dev *input;
+ struct notifier_block notifier;
+ struct nvec_chip *nvec;
+};
+
+static struct nvec_keys keys_dev;
+
+static int nvec_keys_notifier(struct notifier_block *nb,
+ unsigned long event_type, void *data)
+{
+ int code, state;
+ unsigned char *msg = (unsigned char *)data;
+
+ if (event_type == NVEC_KB_EVT) {
+ nvec_size _size = (msg[0] & (3 << 5)) >> 5;
+
+/* power on/off button */
+ if(_size == NVEC_VAR_SIZE)
+ return NOTIFY_STOP;
+
+ if(_size == NVEC_3BYTES)
+ msg++;
+
+ code = msg[1] & 0x7f;
+ state = msg[1] & 0x80;
+
+ input_report_key(keys_dev.input, code_tabs[_size][code], !state);
+ input_sync(keys_dev.input);
+
+ return NOTIFY_STOP;
+ }
+
+ return NOTIFY_DONE;
+}
+
+static int nvec_kbd_event(struct input_dev *dev, unsigned int type,
+ unsigned int code, int value)
+{
+ unsigned char buf[] = ACK_KBD_EVENT;
+ struct nvec_chip *nvec = keys_dev.nvec;
+
+ if(type==EV_REP)
+ return 0;
+
+ if(type!=EV_LED)
+ return -1;
+
+ if(code!=LED_CAPSL)
+ return -1;
+
+ buf[2] = !!value;
+ nvec_write_async(nvec, buf, sizeof(buf));
+
+ return 0;
+}
+
+int __init nvec_kbd_init(struct nvec_chip *nvec)
+{
+ int i, j, err;
+ struct input_dev *idev;
+
+ j = 0;
+
+ for(i = 0; i < ARRAY_SIZE(code_tab_102us); ++i)
+ keycodes[j++] = code_tab_102us[i];
+
+ for(i = 0; i < ARRAY_SIZE(extcode_tab_us102); ++i)
+ keycodes[j++]=extcode_tab_us102[i];
+
+ idev = input_allocate_device();
+ idev->name = "Tegra nvec keyboard";
+ idev->phys = "i2c3_slave/nvec";
+ idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) | BIT_MASK(EV_LED);
+ idev->ledbit[0] = BIT_MASK(LED_CAPSL);
+ idev->event = nvec_kbd_event;
+ idev->keycode = keycodes;
+ idev->keycodesize = sizeof(unsigned char);
+ idev->keycodemax = ARRAY_SIZE(keycodes);
+
+ for( i = 0; i < ARRAY_SIZE(keycodes); ++i)
+ set_bit(keycodes[i], idev->keybit);
+
+ clear_bit(0, idev->keybit);
+ err = input_register_device(idev);
+ if(err)
+ goto fail;
+
+ keys_dev.input = idev;
+ keys_dev.notifier.notifier_call = nvec_keys_notifier;
+ keys_dev.nvec = nvec;
+ nvec_register_notifier(nvec, &keys_dev.notifier, 0);
+
+ /* Enable keyboard */
+ nvec_write_async(nvec, "\x05\xf4", 2);
+
+ /* keyboard reset? */
+ nvec_write_async(nvec, "\x05\x03\x01\x01", 4);
+ nvec_write_async(nvec, "\x05\x04\x01", 3);
+ nvec_write_async(nvec, "\x06\x01\xff\x03", 4);
+/* FIXME
+ wait until keyboard reset is finished
+ or until we have a sync write */
+ mdelay(1000);
+
+ return 0;
+
+fail:
+ input_free_device(idev);
+ return err;
+}
--- /dev/null
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/err.h>
+#include <linux/power_supply.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+#include <linux/delay.h>
+#include "nvec.h"
+
+struct nvec_power
+{
+ struct notifier_block notifier;
+ struct delayed_work poller;
+ struct nvec_chip *nvec;
+ int on;
+ int bat_present;
+ int bat_status;
+ int bat_voltage_now;
+ int bat_current_now;
+ int bat_current_avg;
+ int time_remain;
+ int charge_full_design;
+ int charge_last_full;
+ int critical_capacity;
+ int capacity_remain;
+ int bat_temperature;
+ int bat_cap;
+ int bat_type_enum;
+ char bat_manu[30];
+ char bat_model[30];
+ char bat_type[30];
+};
+
+enum {
+ SLOT_STATUS,
+ VOLTAGE,
+ TIME_REMAINING,
+ CURRENT,
+ AVERAGE_CURRENT,
+ AVERAGING_TIME_INTERVAL,
+ CAPACITY_REMAINING,
+ LAST_FULL_CHARGE_CAPACITY,
+ DESIGN_CAPACITY,
+ CRITICAL_CAPACITY,
+ TEMPERATURE,
+ MANUFACTURER,
+ MODEL,
+ TYPE,
+};
+
+enum {
+ AC,
+ BAT,
+};
+
+struct bat_response {
+ u8 event_type;
+ u8 length;
+ u8 sub_type;
+ u8 status;
+ union { /* payload */
+ char plc[30];
+ u16 plu;
+ s16 pls;
+ };
+};
+
+static struct power_supply nvec_bat_psy;
+static struct power_supply nvec_psy;
+
+static int nvec_power_notifier(struct notifier_block *nb,
+ unsigned long event_type, void *data)
+{
+ struct nvec_power *power = container_of(nb, struct nvec_power, notifier);
+ struct bat_response *res = (struct bat_response *)data;
+
+ if (event_type != NVEC_SYS)
+ return NOTIFY_DONE;
+
+ if(res->sub_type == 0)
+ {
+ if (power->on != res->plu)
+ {
+ power->on = res->plu;
+ power_supply_changed(&nvec_psy);
+ }
+ return NOTIFY_STOP;
+ }
+ return NOTIFY_OK;
+}
+
+static const int bat_init[] =
+{
+ LAST_FULL_CHARGE_CAPACITY, DESIGN_CAPACITY, CRITICAL_CAPACITY,
+ MANUFACTURER, MODEL, TYPE,
+};
+
+static void get_bat_mfg_data(struct nvec_power *power)
+{
+ int i;
+ char buf[] = { '\x02', '\x00' };
+
+ for (i = 0; i < ARRAY_SIZE(bat_init); i++)
+ {
+ buf[1] = bat_init[i];
+ nvec_write_async(power->nvec, buf, 2);
+ }
+}
+
+static int nvec_power_bat_notifier(struct notifier_block *nb,
+ unsigned long event_type, void *data)
+{
+ struct nvec_power *power = container_of(nb, struct nvec_power, notifier);
+ struct bat_response *res = (struct bat_response *)data;
+ int status_changed = 0;
+
+ if (event_type != NVEC_BAT)
+ return NOTIFY_DONE;
+
+ switch(res->sub_type)
+ {
+ case SLOT_STATUS:
+ if (res->plc[0] & 1)
+ {
+ if (power->bat_present == 0)
+ {
+ status_changed = 1;
+ get_bat_mfg_data(power);
+ }
+
+ power->bat_present = 1;
+
+ switch ((res->plc[0] >> 1) & 3)
+ {
+ case 0:
+ power->bat_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+ break;
+ case 1:
+ power->bat_status = POWER_SUPPLY_STATUS_CHARGING;
+ break;
+ case 2:
+ power->bat_status = POWER_SUPPLY_STATUS_DISCHARGING;
+ break;
+ default:
+ power->bat_status = POWER_SUPPLY_STATUS_UNKNOWN;
+ }
+ } else {
+ if (power->bat_present == 1)
+ status_changed = 1;
+
+ power->bat_present = 0;
+ power->bat_status = POWER_SUPPLY_STATUS_UNKNOWN;
+ }
+ power->bat_cap = res->plc[1];
+ if (status_changed)
+ power_supply_changed(&nvec_bat_psy);
+ break;
+ case VOLTAGE:
+ power->bat_voltage_now = res->plu * 1000;
+ break;
+ case TIME_REMAINING:
+ power->time_remain = res->plu * 3600;
+ break;
+ case CURRENT:
+ power->bat_current_now = res->pls * 1000;
+ break;
+ case AVERAGE_CURRENT:
+ power->bat_current_avg = res->pls * 1000;
+ break;
+ case CAPACITY_REMAINING:
+ power->capacity_remain = res->plu * 1000;
+ break;
+ case LAST_FULL_CHARGE_CAPACITY:
+ power->charge_last_full = res->plu * 1000;
+ break;
+ case DESIGN_CAPACITY:
+ power->charge_full_design = res->plu * 1000;
+ break;
+ case CRITICAL_CAPACITY:
+ power->critical_capacity = res->plu * 1000;
+ break;
+ case TEMPERATURE:
+ power->bat_temperature = res->plu - 2732;
+ break;
+ case MANUFACTURER:
+ memcpy(power->bat_manu, &res->plc, res->length-2);
+ power->bat_model[res->length-2] = '\0';
+ break;
+ case MODEL:
+ memcpy(power->bat_model, &res->plc, res->length-2);
+ power->bat_model[res->length-2] = '\0';
+ break;
+ case TYPE:
+ memcpy(power->bat_type, &res->plc, res->length-2);
+ power->bat_type[res->length-2] = '\0';
+ /* this differs a little from the spec
+ fill in more if you find some */
+ if (!strncmp(power->bat_type, "Li", 30))
+ power->bat_type_enum = POWER_SUPPLY_TECHNOLOGY_LION;
+ else
+ power->bat_type_enum = POWER_SUPPLY_TECHNOLOGY_UNKNOWN;
+ break;
+ default:
+ return NOTIFY_STOP;
+ }
+
+ return NOTIFY_STOP;
+}
+
+static int nvec_power_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct nvec_power *power = dev_get_drvdata(psy->dev->parent);
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = power->on;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int nvec_battery_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct nvec_power *power = dev_get_drvdata(psy->dev->parent);
+
+ switch(psp)
+ {
+ case POWER_SUPPLY_PROP_STATUS:
+ val->intval = power->bat_status;
+ break;
+ case POWER_SUPPLY_PROP_CAPACITY:
+ val->intval = power->bat_cap;
+ break;
+ case POWER_SUPPLY_PROP_PRESENT:
+ val->intval = power->bat_present;
+ break;
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+ val->intval = power->bat_voltage_now;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ val->intval = power->bat_current_now;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_AVG:
+ val->intval = power->bat_current_avg;
+ break;
+ case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW:
+ val->intval = power->time_remain;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
+ val->intval = power->charge_full_design;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_FULL:
+ val->intval = power->charge_last_full;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_EMPTY:
+ val->intval = power->critical_capacity;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_NOW:
+ val->intval = power->capacity_remain;
+ break;
+ case POWER_SUPPLY_PROP_TEMP:
+ val->intval = power->bat_temperature;
+ break;
+ case POWER_SUPPLY_PROP_MANUFACTURER:
+ val->strval = power->bat_manu;
+ break;
+ case POWER_SUPPLY_PROP_MODEL_NAME:
+ val->strval = power->bat_model;
+ break;
+ case POWER_SUPPLY_PROP_TECHNOLOGY:
+ val->intval = power->bat_type_enum;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static enum power_supply_property nvec_power_props[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+};
+
+static enum power_supply_property nvec_battery_props[] = {
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_PRESENT,
+ POWER_SUPPLY_PROP_CAPACITY,
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+#ifdef EC_FULL_DIAG
+ POWER_SUPPLY_PROP_CURRENT_AVG,
+ POWER_SUPPLY_PROP_TEMP,
+ POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
+#endif
+ POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+ POWER_SUPPLY_PROP_CHARGE_FULL,
+ POWER_SUPPLY_PROP_CHARGE_EMPTY,
+ POWER_SUPPLY_PROP_CHARGE_NOW,
+ POWER_SUPPLY_PROP_MANUFACTURER,
+ POWER_SUPPLY_PROP_MODEL_NAME,
+ POWER_SUPPLY_PROP_TECHNOLOGY,
+};
+
+static char *nvec_power_supplied_to[] = {
+ "battery",
+};
+
+static struct power_supply nvec_bat_psy = {
+ .name = "battery",
+ .type = POWER_SUPPLY_TYPE_BATTERY,
+ .properties = nvec_battery_props,
+ .num_properties = ARRAY_SIZE(nvec_battery_props),
+ .get_property = nvec_battery_get_property,
+};
+
+static struct power_supply nvec_psy = {
+ .name = "ac",
+ .type = POWER_SUPPLY_TYPE_MAINS,
+ .supplied_to = nvec_power_supplied_to,
+ .num_supplicants = ARRAY_SIZE(nvec_power_supplied_to),
+ .properties = nvec_power_props,
+ .num_properties = ARRAY_SIZE(nvec_power_props),
+ .get_property = nvec_power_get_property,
+};
+
+static int counter = 0;
+static int const bat_iter[] =
+{
+ SLOT_STATUS, VOLTAGE, CURRENT, CAPACITY_REMAINING,
+#ifdef EC_FULL_DIAG
+ AVERAGE_CURRENT, TEMPERATURE, TIME_REMAINING,
+#endif
+};
+
+static void nvec_power_poll(struct work_struct *work)
+{
+ char buf[] = { '\x01', '\x00' };
+ struct nvec_power *power = container_of(work, struct nvec_power,
+ poller.work);
+
+ if (counter >= ARRAY_SIZE(bat_iter))
+ counter = 0;
+
+/* AC status via sys req */
+ nvec_write_async(power->nvec, buf, 2);
+ msleep(100);
+
+/* select a battery request function via round robin
+ doing it all at once seems to overload the power supply */
+ buf[0] = '\x02'; /* battery */
+ buf[1] = bat_iter[counter++];
+ nvec_write_async(power->nvec, buf, 2);
+
+// printk("%02x %02x\n", buf[0], buf[1]);
+
+ schedule_delayed_work(to_delayed_work(work), msecs_to_jiffies(5000));
+};
+
+static int __devinit nvec_power_probe(struct platform_device *pdev)
+{
+ struct power_supply *psy;
+ struct nvec_power *power = kzalloc(sizeof(struct nvec_power), GFP_NOWAIT);
+ struct nvec_chip *nvec = dev_get_drvdata(pdev->dev.parent);
+
+ dev_set_drvdata(&pdev->dev, power);
+ power->nvec = nvec;
+
+ switch (pdev->id) {
+ case AC:
+ psy = &nvec_psy;
+
+ power->notifier.notifier_call = nvec_power_notifier;
+
+ INIT_DELAYED_WORK(&power->poller, nvec_power_poll);
+ schedule_delayed_work(&power->poller, msecs_to_jiffies(5000));
+ break;
+ case BAT:
+ psy = &nvec_bat_psy;
+
+ power->notifier.notifier_call = nvec_power_bat_notifier;
+ break;
+ default:
+ kfree(power);
+ return -ENODEV;
+ }
+
+ nvec_register_notifier(nvec, &power->notifier, NVEC_SYS);
+
+ if (pdev->id == BAT)
+ get_bat_mfg_data(power);
+
+ return power_supply_register(&pdev->dev, psy);
+}
+
+static struct platform_driver nvec_power_driver = {
+ .probe = nvec_power_probe,
+// .remove = __devexit_p(nvec_power_remove),
+ .driver = {
+ .name = "nvec-power",
+ .owner = THIS_MODULE,
+ }
+};
+
+static int __init nvec_power_init(void)
+{
+ return platform_driver_register(&nvec_power_driver);
+}
+
+module_init(nvec_power_init);
+
+MODULE_AUTHOR("Ilya Petrov <ilya.muromec@gmail.com>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("NVEC battery and AC driver");
+MODULE_ALIAS("platform:nvec-power");
--- /dev/null
+#include <linux/slab.h>
+#include <linux/serio.h>
+#include <linux/delay.h>
+#include "nvec.h"
+
+#define START_STREAMING {'\x06','\x03','\x01'}
+#define STOP_STREAMING {'\x06','\x04'}
+#define SEND_COMMAND {'\x06','\x01','\xf4','\x01'}
+
+struct nvec_ps2
+{
+ struct serio *ser_dev;
+ struct notifier_block notifier;
+ struct nvec_chip *nvec;
+};
+
+static struct nvec_ps2 ps2_dev;
+
+static int ps2_startstreaming(struct serio *ser_dev)
+{
+ unsigned char buf[] = START_STREAMING;
+ nvec_write_async(ps2_dev.nvec, buf, sizeof(buf));
+ return 0;
+}
+
+static void ps2_stopstreaming(struct serio *ser_dev)
+{
+ unsigned char buf[] = STOP_STREAMING;
+ nvec_write_async(ps2_dev.nvec, buf, sizeof(buf));
+}
+
+/* is this really needed?
+static void nvec_resp_handler(unsigned char *data) {
+ serio_interrupt(ser_dev, data[4], 0);
+}
+*/
+
+static int ps2_sendcommand(struct serio *ser_dev, unsigned char cmd)
+{
+ unsigned char buf[] = SEND_COMMAND;
+
+ buf[2] = cmd & 0xff;
+
+ dev_dbg(&ser_dev->dev, "Sending ps2 cmd %02x\n", cmd);
+ nvec_write_async(ps2_dev.nvec, buf, sizeof(buf));
+
+ return 0;
+}
+
+static int nvec_ps2_notifier(struct notifier_block *nb,
+ unsigned long event_type, void *data)
+{
+ int i;
+ unsigned char *msg = (unsigned char *)data;
+
+ switch (event_type) {
+ case NVEC_PS2_EVT:
+ serio_interrupt(ps2_dev.ser_dev, msg[2], 0);
+ return NOTIFY_STOP;
+
+ case NVEC_PS2:
+ if (msg[2] == 1)
+ for(i = 0; i < (msg[1] - 2); i++)
+ serio_interrupt(ps2_dev.ser_dev, msg[i+4], 0);
+ else if (msg[1] != 2) /* !ack */
+ {
+ printk("nvec_ps2: unhandled mouse event ");
+ for(i = 0; i <= (msg[1]+1); i++)
+ printk("%02x ", msg[i]);
+ printk(".\n");
+ }
+
+ return NOTIFY_STOP;
+ }
+
+ return NOTIFY_DONE;
+}
+
+
+int __init nvec_ps2(struct nvec_chip *nvec)
+{
+ struct serio *ser_dev = kzalloc(sizeof(struct serio), GFP_KERNEL);
+
+ ser_dev->id.type=SERIO_8042;
+ ser_dev->write=ps2_sendcommand;
+ ser_dev->open=ps2_startstreaming;
+ ser_dev->close=ps2_stopstreaming;
+
+ strlcpy(ser_dev->name, "NVEC PS2", sizeof(ser_dev->name));
+ strlcpy(ser_dev->phys, "NVEC I2C slave", sizeof(ser_dev->phys));
+
+ ps2_dev.ser_dev = ser_dev;
+ ps2_dev.notifier.notifier_call = nvec_ps2_notifier;
+ ps2_dev.nvec = nvec;
+ nvec_register_notifier(nvec, &ps2_dev.notifier, 0);
+
+ serio_register_port(ser_dev);
+
+ /* mouse reset */
+ nvec_write_async(nvec, "\x06\x01\xff\x03", 4);
+
+ return 0;
+}
projects / platform / upstream / kernel-adaptation-pc.git / commitdiff