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Input: add driver for Elan I2C/SMbus touchpad
This driver supports Elan I2C/SMbus touchpads found in some laptops and also in many Chromebooks. Signed-off-by: Duson Lin <dusonlin@emc.com.tw> Reviewed-by: Benson Leung <bleung@chromium.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Duson Lin
Dmitry Torokhov
parent
dae7aa8d84
commit
6696777c65
34
Documentation/devicetree/bindings/input/elan_i2c.txt
Normal file
34
Documentation/devicetree/bindings/input/elan_i2c.txt
Normal file
@ -0,0 +1,34 @@
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Elantech I2C Touchpad
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Required properties:
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- compatible: must be "elan,ekth3000".
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- reg: I2C address of the chip.
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- interrupt-parent: a phandle for the interrupt controller (see interrupt
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binding[0]).
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- interrupts: interrupt to which the chip is connected (see interrupt
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binding[0]).
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Optional properties:
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- wakeup-source: touchpad can be used as a wakeup source.
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- pinctrl-names: should be "default" (see pinctrl binding [1]).
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- pinctrl-0: a phandle pointing to the pin settings for the device (see
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pinctrl binding [1]).
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- vcc-supply: a phandle for the regulator supplying 3.3V power.
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[0]: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
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[1]: Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
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Example:
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&i2c1 {
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/* ... */
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touchpad@15 {
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compatible = "elan,ekth3000";
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reg = <0x15>;
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interrupt-parent = <&gpio4>;
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interrupts = <0x0 IRQ_TYPE_EDGE_FALLING>;
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wakeup-source;
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};
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/* ... */
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};
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@ -42,6 +42,7 @@ dlink D-Link Corporation
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dmo Data Modul AG
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ebv EBV Elektronik
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edt Emerging Display Technologies
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elan Elan Microelectronic Corp.
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emmicro EM Microelectronic
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epcos EPCOS AG
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epfl Ecole Polytechnique Fédérale de Lausanne
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@ -215,6 +215,36 @@ config MOUSE_CYAPA
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To compile this driver as a module, choose M here: the module will be
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called cyapa.
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config MOUSE_ELAN_I2C
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tristate "ELAN I2C Touchpad support"
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depends on I2C
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help
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This driver adds support for Elan I2C/SMbus Trackpads.
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Say Y here if you have a ELAN I2C/SMbus Touchpad.
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To compile this driver as a module, choose M here: the module will be
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called elan_i2c.
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config MOUSE_ELAN_I2C_I2C
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bool "Enable I2C support"
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depends on MOUSE_ELAN_I2C
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default y
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help
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Say Y here if Elan Touchpad in your system is connected to
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a standard I2C controller.
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If unsure, say Y.
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config MOUSE_ELAN_I2C_SMBUS
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bool "Enable SMbus support"
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depends on MOUSE_ELAN_I2C
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help
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Say Y here if Elan Touchpad in your system is connected to
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a SMbus adapter.
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If unsure, say Y.
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config MOUSE_INPORT
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tristate "InPort/MS/ATIXL busmouse"
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depends on ISA
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@ -9,6 +9,7 @@ obj-$(CONFIG_MOUSE_APPLETOUCH) += appletouch.o
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obj-$(CONFIG_MOUSE_ATARI) += atarimouse.o
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obj-$(CONFIG_MOUSE_BCM5974) += bcm5974.o
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obj-$(CONFIG_MOUSE_CYAPA) += cyapa.o
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obj-$(CONFIG_MOUSE_ELAN_I2C) += elan_i2c.o
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obj-$(CONFIG_MOUSE_GPIO) += gpio_mouse.o
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obj-$(CONFIG_MOUSE_INPORT) += inport.o
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obj-$(CONFIG_MOUSE_LOGIBM) += logibm.o
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@ -34,3 +35,7 @@ psmouse-$(CONFIG_MOUSE_PS2_SENTELIC) += sentelic.o
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psmouse-$(CONFIG_MOUSE_PS2_TRACKPOINT) += trackpoint.o
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psmouse-$(CONFIG_MOUSE_PS2_TOUCHKIT) += touchkit_ps2.o
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psmouse-$(CONFIG_MOUSE_PS2_CYPRESS) += cypress_ps2.o
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elan_i2c-objs := elan_i2c_core.o
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elan_i2c-$(CONFIG_MOUSE_ELAN_I2C_I2C) += elan_i2c_i2c.o
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elan_i2c-$(CONFIG_MOUSE_ELAN_I2C_SMBUS) += elan_i2c_smbus.o
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86
drivers/input/mouse/elan_i2c.h
Normal file
86
drivers/input/mouse/elan_i2c.h
Normal file
@ -0,0 +1,86 @@
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/*
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* Elan I2C/SMBus Touchpad driver
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*
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* Copyright (c) 2013 ELAN Microelectronics Corp.
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*
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* Author: 林政維 (Duson Lin) <dusonlin@emc.com.tw>
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* Version: 1.5.5
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*
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* Based on cyapa driver:
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* copyright (c) 2011-2012 Cypress Semiconductor, Inc.
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* copyright (c) 2011-2012 Google, Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*
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* Trademarks are the property of their respective owners.
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*/
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#ifndef _ELAN_I2C_H
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#define _ELAN_i2C_H
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#include <linux/types.h>
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#define ETP_ENABLE_ABS 0x0001
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#define ETP_ENABLE_CALIBRATE 0x0002
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#define ETP_DISABLE_CALIBRATE 0x0000
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#define ETP_DISABLE_POWER 0x0001
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/* IAP Firmware handling */
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#define ETP_FW_NAME "elan_i2c.bin"
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#define ETP_IAP_START_ADDR 0x0083
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#define ETP_FW_IAP_PAGE_ERR (1 << 5)
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#define ETP_FW_IAP_INTF_ERR (1 << 4)
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#define ETP_FW_PAGE_SIZE 64
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#define ETP_FW_PAGE_COUNT 768
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#define ETP_FW_SIZE (ETP_FW_PAGE_SIZE * ETP_FW_PAGE_COUNT)
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struct i2c_client;
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struct completion;
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enum tp_mode {
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IAP_MODE = 1,
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MAIN_MODE
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};
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struct elan_transport_ops {
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int (*initialize)(struct i2c_client *client);
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int (*sleep_control)(struct i2c_client *, bool sleep);
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int (*power_control)(struct i2c_client *, bool enable);
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int (*set_mode)(struct i2c_client *client, u8 mode);
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int (*calibrate)(struct i2c_client *client);
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int (*calibrate_result)(struct i2c_client *client, u8 *val);
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int (*get_baseline_data)(struct i2c_client *client,
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bool max_baseliune, u8 *value);
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int (*get_version)(struct i2c_client *client, bool iap, u8 *version);
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int (*get_sm_version)(struct i2c_client *client, u8 *version);
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int (*get_checksum)(struct i2c_client *client, bool iap, u16 *csum);
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int (*get_product_id)(struct i2c_client *client, u8 *id);
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int (*get_max)(struct i2c_client *client,
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unsigned int *max_x, unsigned int *max_y);
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int (*get_resolution)(struct i2c_client *client,
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u8 *hw_res_x, u8 *hw_res_y);
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int (*get_num_traces)(struct i2c_client *client,
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unsigned int *x_tracenum,
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unsigned int *y_tracenum);
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int (*iap_get_mode)(struct i2c_client *client, enum tp_mode *mode);
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int (*iap_reset)(struct i2c_client *client);
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int (*prepare_fw_update)(struct i2c_client *client);
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int (*write_fw_block)(struct i2c_client *client,
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const u8 *page, u16 checksum, int idx);
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int (*finish_fw_update)(struct i2c_client *client,
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struct completion *reset_done);
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int (*get_report)(struct i2c_client *client, u8 *report);
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};
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extern const struct elan_transport_ops elan_smbus_ops, elan_i2c_ops;
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#endif /* _ELAN_I2C_H */
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1137
drivers/input/mouse/elan_i2c_core.c
Normal file
1137
drivers/input/mouse/elan_i2c_core.c
Normal file
File diff suppressed because it is too large
Load Diff
611
drivers/input/mouse/elan_i2c_i2c.c
Normal file
611
drivers/input/mouse/elan_i2c_i2c.c
Normal file
@ -0,0 +1,611 @@
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/*
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* Elan I2C/SMBus Touchpad driver - I2C interface
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*
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* Copyright (c) 2013 ELAN Microelectronics Corp.
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*
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* Author: 林政維 (Duson Lin) <dusonlin@emc.com.tw>
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* Version: 1.5.5
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*
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* Based on cyapa driver:
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* copyright (c) 2011-2012 Cypress Semiconductor, Inc.
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* copyright (c) 2011-2012 Google, Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*
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* Trademarks are the property of their respective owners.
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*/
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#include <linux/completion.h>
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#include <linux/delay.h>
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#include <linux/i2c.h>
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#include <linux/interrupt.h>
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#include <linux/jiffies.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <asm/unaligned.h>
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#include "elan_i2c.h"
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/* Elan i2c commands */
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#define ETP_I2C_RESET 0x0100
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#define ETP_I2C_WAKE_UP 0x0800
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#define ETP_I2C_SLEEP 0x0801
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#define ETP_I2C_DESC_CMD 0x0001
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#define ETP_I2C_REPORT_DESC_CMD 0x0002
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#define ETP_I2C_STAND_CMD 0x0005
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#define ETP_I2C_UNIQUEID_CMD 0x0101
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#define ETP_I2C_FW_VERSION_CMD 0x0102
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#define ETP_I2C_SM_VERSION_CMD 0x0103
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#define ETP_I2C_XY_TRACENUM_CMD 0x0105
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#define ETP_I2C_MAX_X_AXIS_CMD 0x0106
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#define ETP_I2C_MAX_Y_AXIS_CMD 0x0107
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#define ETP_I2C_RESOLUTION_CMD 0x0108
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#define ETP_I2C_IAP_VERSION_CMD 0x0110
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#define ETP_I2C_SET_CMD 0x0300
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#define ETP_I2C_POWER_CMD 0x0307
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#define ETP_I2C_FW_CHECKSUM_CMD 0x030F
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#define ETP_I2C_IAP_CTRL_CMD 0x0310
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#define ETP_I2C_IAP_CMD 0x0311
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#define ETP_I2C_IAP_RESET_CMD 0x0314
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#define ETP_I2C_IAP_CHECKSUM_CMD 0x0315
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#define ETP_I2C_CALIBRATE_CMD 0x0316
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#define ETP_I2C_MAX_BASELINE_CMD 0x0317
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#define ETP_I2C_MIN_BASELINE_CMD 0x0318
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#define ETP_I2C_REPORT_LEN 34
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#define ETP_I2C_DESC_LENGTH 30
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#define ETP_I2C_REPORT_DESC_LENGTH 158
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#define ETP_I2C_INF_LENGTH 2
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#define ETP_I2C_IAP_PASSWORD 0x1EA5
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#define ETP_I2C_IAP_RESET 0xF0F0
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#define ETP_I2C_MAIN_MODE_ON (1 << 9)
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#define ETP_I2C_IAP_REG_L 0x01
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#define ETP_I2C_IAP_REG_H 0x06
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static int elan_i2c_read_block(struct i2c_client *client,
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u16 reg, u8 *val, u16 len)
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{
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__le16 buf[] = {
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cpu_to_le16(reg),
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};
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struct i2c_msg msgs[] = {
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{
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.addr = client->addr,
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.flags = client->flags & I2C_M_TEN,
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.len = sizeof(buf),
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.buf = (u8 *)buf,
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},
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{
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.addr = client->addr,
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.flags = (client->flags & I2C_M_TEN) | I2C_M_RD,
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.len = len,
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.buf = val,
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}
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};
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int ret;
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ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
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return ret == ARRAY_SIZE(msgs) ? 0 : (ret < 0 ? ret : -EIO);
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}
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static int elan_i2c_read_cmd(struct i2c_client *client, u16 reg, u8 *val)
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{
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int retval;
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retval = elan_i2c_read_block(client, reg, val, ETP_I2C_INF_LENGTH);
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if (retval < 0) {
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dev_err(&client->dev, "reading cmd (0x%04x) fail.\n", reg);
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return retval;
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}
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return 0;
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}
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static int elan_i2c_write_cmd(struct i2c_client *client, u16 reg, u16 cmd)
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{
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__le16 buf[] = {
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cpu_to_le16(reg),
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cpu_to_le16(cmd),
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};
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struct i2c_msg msg = {
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.addr = client->addr,
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.flags = client->flags & I2C_M_TEN,
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.len = sizeof(buf),
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.buf = (u8 *)buf,
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};
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int ret;
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ret = i2c_transfer(client->adapter, &msg, 1);
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return ret == 1 ? 0 : (ret < 0 ? ret : -EIO);
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}
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static int elan_i2c_initialize(struct i2c_client *client)
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{
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struct device *dev = &client->dev;
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int error;
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u8 val[256];
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error = elan_i2c_write_cmd(client, ETP_I2C_STAND_CMD, ETP_I2C_RESET);
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if (error) {
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dev_err(dev, "device reset failed: %d\n", error);
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return error;
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}
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/* Wait for the device to reset */
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msleep(100);
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/* get reset acknowledgement 0000 */
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error = i2c_master_recv(client, val, ETP_I2C_INF_LENGTH);
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if (error < 0) {
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dev_err(dev, "failed to read reset response: %d\n", error);
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return error;
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}
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error = elan_i2c_read_block(client, ETP_I2C_DESC_CMD,
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val, ETP_I2C_DESC_LENGTH);
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if (error) {
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dev_err(dev, "cannot get device descriptor: %d\n", error);
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return error;
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}
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error = elan_i2c_read_block(client, ETP_I2C_REPORT_DESC_CMD,
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val, ETP_I2C_REPORT_DESC_LENGTH);
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if (error) {
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dev_err(dev, "fetching report descriptor failed.: %d\n", error);
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return error;
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}
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return 0;
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}
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static int elan_i2c_sleep_control(struct i2c_client *client, bool sleep)
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{
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return elan_i2c_write_cmd(client, ETP_I2C_STAND_CMD,
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sleep ? ETP_I2C_SLEEP : ETP_I2C_WAKE_UP);
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}
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static int elan_i2c_power_control(struct i2c_client *client, bool enable)
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{
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u8 val[2];
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u16 reg;
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int error;
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error = elan_i2c_read_cmd(client, ETP_I2C_POWER_CMD, val);
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if (error) {
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dev_err(&client->dev,
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"failed to read current power state: %d\n",
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error);
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return error;
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}
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reg = le16_to_cpup((__le16 *)val);
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if (enable)
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reg &= ~ETP_DISABLE_POWER;
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else
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reg |= ETP_DISABLE_POWER;
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error = elan_i2c_write_cmd(client, ETP_I2C_POWER_CMD, reg);
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if (error) {
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dev_err(&client->dev,
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"failed to write current power state: %d\n",
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error);
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return error;
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}
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return 0;
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}
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static int elan_i2c_set_mode(struct i2c_client *client, u8 mode)
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{
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return elan_i2c_write_cmd(client, ETP_I2C_SET_CMD, mode);
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}
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static int elan_i2c_calibrate(struct i2c_client *client)
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{
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return elan_i2c_write_cmd(client, ETP_I2C_CALIBRATE_CMD, 1);
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}
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static int elan_i2c_calibrate_result(struct i2c_client *client, u8 *val)
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{
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return elan_i2c_read_block(client, ETP_I2C_CALIBRATE_CMD, val, 1);
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}
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static int elan_i2c_get_baseline_data(struct i2c_client *client,
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bool max_baseline, u8 *value)
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{
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int error;
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u8 val[3];
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error = elan_i2c_read_cmd(client,
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max_baseline ? ETP_I2C_MAX_BASELINE_CMD :
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ETP_I2C_MIN_BASELINE_CMD,
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val);
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if (error)
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return error;
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*value = le16_to_cpup((__le16 *)val);
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return 0;
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}
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||||
|
||||
static int elan_i2c_get_version(struct i2c_client *client,
|
||||
bool iap, u8 *version)
|
||||
{
|
||||
int error;
|
||||
u8 val[3];
|
||||
|
||||
error = elan_i2c_read_cmd(client,
|
||||
iap ? ETP_I2C_IAP_VERSION_CMD :
|
||||
ETP_I2C_FW_VERSION_CMD,
|
||||
val);
|
||||
if (error) {
|
||||
dev_err(&client->dev, "failed to get %s version: %d\n",
|
||||
iap ? "IAP" : "FW", error);
|
||||
return error;
|
||||
}
|
||||
|
||||
*version = val[0];
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int elan_i2c_get_sm_version(struct i2c_client *client, u8 *version)
|
||||
{
|
||||
int error;
|
||||
u8 val[3];
|
||||
|
||||
error = elan_i2c_read_cmd(client, ETP_I2C_SM_VERSION_CMD, val);
|
||||
if (error) {
|
||||
dev_err(&client->dev, "failed to get SM version: %d\n", error);
|
||||
return error;
|
||||
}
|
||||
|
||||
*version = val[0];
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int elan_i2c_get_product_id(struct i2c_client *client, u8 *id)
|
||||
{
|
||||
int error;
|
||||
u8 val[3];
|
||||
|
||||
error = elan_i2c_read_cmd(client, ETP_I2C_UNIQUEID_CMD, val);
|
||||
if (error) {
|
||||
dev_err(&client->dev, "failed to get product ID: %d\n", error);
|
||||
return error;
|
||||
}
|
||||
|
||||
*id = val[0];
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int elan_i2c_get_checksum(struct i2c_client *client,
|
||||
bool iap, u16 *csum)
|
||||
{
|
||||
int error;
|
||||
u8 val[3];
|
||||
|
||||
error = elan_i2c_read_cmd(client,
|
||||
iap ? ETP_I2C_IAP_CHECKSUM_CMD :
|
||||
ETP_I2C_FW_CHECKSUM_CMD,
|
||||
val);
|
||||
if (error) {
|
||||
dev_err(&client->dev, "failed to get %s checksum: %d\n",
|
||||
iap ? "IAP" : "FW", error);
|
||||
return error;
|
||||
}
|
||||
|
||||
*csum = le16_to_cpup((__le16 *)val);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int elan_i2c_get_max(struct i2c_client *client,
|
||||
unsigned int *max_x, unsigned int *max_y)
|
||||
{
|
||||
int error;
|
||||
u8 val[3];
|
||||
|
||||
error = elan_i2c_read_cmd(client, ETP_I2C_MAX_X_AXIS_CMD, val);
|
||||
if (error) {
|
||||
dev_err(&client->dev, "failed to get X dimension: %d\n", error);
|
||||
return error;
|
||||
}
|
||||
|
||||
*max_x = le16_to_cpup((__le16 *)val) & 0x0fff;
|
||||
|
||||
error = elan_i2c_read_cmd(client, ETP_I2C_MAX_Y_AXIS_CMD, val);
|
||||
if (error) {
|
||||
dev_err(&client->dev, "failed to get Y dimension: %d\n", error);
|
||||
return error;
|
||||
}
|
||||
|
||||
*max_y = le16_to_cpup((__le16 *)val) & 0x0fff;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int elan_i2c_get_resolution(struct i2c_client *client,
|
||||
u8 *hw_res_x, u8 *hw_res_y)
|
||||
{
|
||||
int error;
|
||||
u8 val[3];
|
||||
|
||||
error = elan_i2c_read_cmd(client, ETP_I2C_RESOLUTION_CMD, val);
|
||||
if (error) {
|
||||
dev_err(&client->dev, "failed to get resolution: %d\n", error);
|
||||
return error;
|
||||
}
|
||||
|
||||
*hw_res_x = val[0];
|
||||
*hw_res_y = val[1];
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int elan_i2c_get_num_traces(struct i2c_client *client,
|
||||
unsigned int *x_traces,
|
||||
unsigned int *y_traces)
|
||||
{
|
||||
int error;
|
||||
u8 val[3];
|
||||
|
||||
error = elan_i2c_read_cmd(client, ETP_I2C_XY_TRACENUM_CMD, val);
|
||||
if (error) {
|
||||
dev_err(&client->dev, "failed to get trace info: %d\n", error);
|
||||
return error;
|
||||
}
|
||||
|
||||
*x_traces = val[0] - 1;
|
||||
*y_traces = val[1] - 1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int elan_i2c_iap_get_mode(struct i2c_client *client, enum tp_mode *mode)
|
||||
{
|
||||
int error;
|
||||
u16 constant;
|
||||
u8 val[3];
|
||||
|
||||
error = elan_i2c_read_cmd(client, ETP_I2C_IAP_CTRL_CMD, val);
|
||||
if (error) {
|
||||
dev_err(&client->dev,
|
||||
"failed to read iap control register: %d\n",
|
||||
error);
|
||||
return error;
|
||||
}
|
||||
|
||||
constant = le16_to_cpup((__le16 *)val);
|
||||
dev_dbg(&client->dev, "iap control reg: 0x%04x.\n", constant);
|
||||
|
||||
*mode = (constant & ETP_I2C_MAIN_MODE_ON) ? MAIN_MODE : IAP_MODE;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int elan_i2c_iap_reset(struct i2c_client *client)
|
||||
{
|
||||
int error;
|
||||
|
||||
error = elan_i2c_write_cmd(client, ETP_I2C_IAP_RESET_CMD,
|
||||
ETP_I2C_IAP_RESET);
|
||||
if (error) {
|
||||
dev_err(&client->dev, "cannot reset IC: %d\n", error);
|
||||
return error;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int elan_i2c_set_flash_key(struct i2c_client *client)
|
||||
{
|
||||
int error;
|
||||
|
||||
error = elan_i2c_write_cmd(client, ETP_I2C_IAP_CMD,
|
||||
ETP_I2C_IAP_PASSWORD);
|
||||
if (error) {
|
||||
dev_err(&client->dev, "cannot set flash key: %d\n", error);
|
||||
return error;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int elan_i2c_prepare_fw_update(struct i2c_client *client)
|
||||
{
|
||||
struct device *dev = &client->dev;
|
||||
int error;
|
||||
enum tp_mode mode;
|
||||
u8 val[3];
|
||||
u16 password;
|
||||
|
||||
/* Get FW in which mode (IAP_MODE/MAIN_MODE) */
|
||||
error = elan_i2c_iap_get_mode(client, &mode);
|
||||
if (error)
|
||||
return error;
|
||||
|
||||
if (mode == IAP_MODE) {
|
||||
/* Reset IC */
|
||||
error = elan_i2c_iap_reset(client);
|
||||
if (error)
|
||||
return error;
|
||||
|
||||
msleep(30);
|
||||
}
|
||||
|
||||
/* Set flash key*/
|
||||
error = elan_i2c_set_flash_key(client);
|
||||
if (error)
|
||||
return error;
|
||||
|
||||
/* Wait for F/W IAP initialization */
|
||||
msleep(mode == MAIN_MODE ? 100 : 30);
|
||||
|
||||
/* Check if we are in IAP mode or not */
|
||||
error = elan_i2c_iap_get_mode(client, &mode);
|
||||
if (error)
|
||||
return error;
|
||||
|
||||
if (mode == MAIN_MODE) {
|
||||
dev_err(dev, "wrong mode: %d\n", mode);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
/* Set flash key again */
|
||||
error = elan_i2c_set_flash_key(client);
|
||||
if (error)
|
||||
return error;
|
||||
|
||||
/* Wait for F/W IAP initialization */
|
||||
msleep(30);
|
||||
|
||||
/* read back to check we actually enabled successfully. */
|
||||
error = elan_i2c_read_cmd(client, ETP_I2C_IAP_CMD, val);
|
||||
if (error) {
|
||||
dev_err(dev, "cannot read iap password: %d\n",
|
||||
error);
|
||||
return error;
|
||||
}
|
||||
|
||||
password = le16_to_cpup((__le16 *)val);
|
||||
if (password != ETP_I2C_IAP_PASSWORD) {
|
||||
dev_err(dev, "wrong iap password: 0x%X\n", password);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int elan_i2c_write_fw_block(struct i2c_client *client,
|
||||
const u8 *page, u16 checksum, int idx)
|
||||
{
|
||||
struct device *dev = &client->dev;
|
||||
u8 page_store[ETP_FW_PAGE_SIZE + 4];
|
||||
u8 val[3];
|
||||
u16 result;
|
||||
int ret, error;
|
||||
|
||||
page_store[0] = ETP_I2C_IAP_REG_L;
|
||||
page_store[1] = ETP_I2C_IAP_REG_H;
|
||||
memcpy(&page_store[2], page, ETP_FW_PAGE_SIZE);
|
||||
/* recode checksum at last two bytes */
|
||||
put_unaligned_le16(checksum, &page_store[ETP_FW_PAGE_SIZE + 2]);
|
||||
|
||||
ret = i2c_master_send(client, page_store, sizeof(page_store));
|
||||
if (ret != sizeof(page_store)) {
|
||||
error = ret < 0 ? ret : -EIO;
|
||||
dev_err(dev, "Failed to write page %d: %d\n", idx, error);
|
||||
return error;
|
||||
}
|
||||
|
||||
/* Wait for F/W to update one page ROM data. */
|
||||
msleep(20);
|
||||
|
||||
error = elan_i2c_read_cmd(client, ETP_I2C_IAP_CTRL_CMD, val);
|
||||
if (error) {
|
||||
dev_err(dev, "Failed to read IAP write result: %d\n", error);
|
||||
return error;
|
||||
}
|
||||
|
||||
result = le16_to_cpup((__le16 *)val);
|
||||
if (result & (ETP_FW_IAP_PAGE_ERR | ETP_FW_IAP_INTF_ERR)) {
|
||||
dev_err(dev, "IAP reports failed write: %04hx\n",
|
||||
result);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int elan_i2c_finish_fw_update(struct i2c_client *client,
|
||||
struct completion *completion)
|
||||
{
|
||||
struct device *dev = &client->dev;
|
||||
long ret;
|
||||
int error;
|
||||
int len;
|
||||
u8 buffer[ETP_I2C_INF_LENGTH];
|
||||
|
||||
reinit_completion(completion);
|
||||
enable_irq(client->irq);
|
||||
|
||||
error = elan_i2c_write_cmd(client, ETP_I2C_STAND_CMD, ETP_I2C_RESET);
|
||||
if (!error)
|
||||
ret = wait_for_completion_interruptible_timeout(completion,
|
||||
msecs_to_jiffies(300));
|
||||
disable_irq(client->irq);
|
||||
|
||||
if (error) {
|
||||
dev_err(dev, "device reset failed: %d\n", error);
|
||||
return error;
|
||||
} else if (ret == 0) {
|
||||
dev_err(dev, "timeout waiting for device reset\n");
|
||||
return -ETIMEDOUT;
|
||||
} else if (ret < 0) {
|
||||
error = ret;
|
||||
dev_err(dev, "error waiting for device reset: %d\n", error);
|
||||
return error;
|
||||
}
|
||||
|
||||
len = i2c_master_recv(client, buffer, ETP_I2C_INF_LENGTH);
|
||||
if (len != ETP_I2C_INF_LENGTH) {
|
||||
error = len < 0 ? len : -EIO;
|
||||
dev_err(dev, "failed to read INT signal: %d (%d)\n",
|
||||
error, len);
|
||||
return error;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int elan_i2c_get_report(struct i2c_client *client, u8 *report)
|
||||
{
|
||||
int len;
|
||||
|
||||
len = i2c_master_recv(client, report, ETP_I2C_REPORT_LEN);
|
||||
if (len < 0) {
|
||||
dev_err(&client->dev, "failed to read report data: %d\n", len);
|
||||
return len;
|
||||
}
|
||||
|
||||
if (len != ETP_I2C_REPORT_LEN) {
|
||||
dev_err(&client->dev,
|
||||
"wrong report length (%d vs %d expected)\n",
|
||||
len, ETP_I2C_REPORT_LEN);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
const struct elan_transport_ops elan_i2c_ops = {
|
||||
.initialize = elan_i2c_initialize,
|
||||
.sleep_control = elan_i2c_sleep_control,
|
||||
.power_control = elan_i2c_power_control,
|
||||
.set_mode = elan_i2c_set_mode,
|
||||
|
||||
.calibrate = elan_i2c_calibrate,
|
||||
.calibrate_result = elan_i2c_calibrate_result,
|
||||
|
||||
.get_baseline_data = elan_i2c_get_baseline_data,
|
||||
|
||||
.get_version = elan_i2c_get_version,
|
||||
.get_sm_version = elan_i2c_get_sm_version,
|
||||
.get_product_id = elan_i2c_get_product_id,
|
||||
.get_checksum = elan_i2c_get_checksum,
|
||||
|
||||
.get_max = elan_i2c_get_max,
|
||||
.get_resolution = elan_i2c_get_resolution,
|
||||
.get_num_traces = elan_i2c_get_num_traces,
|
||||
|
||||
.iap_get_mode = elan_i2c_iap_get_mode,
|
||||
.iap_reset = elan_i2c_iap_reset,
|
||||
|
||||
.prepare_fw_update = elan_i2c_prepare_fw_update,
|
||||
.write_fw_block = elan_i2c_write_fw_block,
|
||||
.finish_fw_update = elan_i2c_finish_fw_update,
|
||||
|
||||
.get_report = elan_i2c_get_report,
|
||||
};
|
||||
514
drivers/input/mouse/elan_i2c_smbus.c
Normal file
514
drivers/input/mouse/elan_i2c_smbus.c
Normal file
@ -0,0 +1,514 @@
|
||||
/*
|
||||
* Elan I2C/SMBus Touchpad driver - SMBus interface
|
||||
*
|
||||
* Copyright (c) 2013 ELAN Microelectronics Corp.
|
||||
*
|
||||
* Author: 林政維 (Duson Lin) <dusonlin@emc.com.tw>
|
||||
* Version: 1.5.5
|
||||
*
|
||||
* Based on cyapa driver:
|
||||
* copyright (c) 2011-2012 Cypress Semiconductor, Inc.
|
||||
* copyright (c) 2011-2012 Google, Inc.
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* Trademarks are the property of their respective owners.
|
||||
*/
|
||||
|
||||
#include <linux/delay.h>
|
||||
#include <linux/i2c.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/kernel.h>
|
||||
|
||||
#include "elan_i2c.h"
|
||||
|
||||
/* Elan SMbus commands */
|
||||
#define ETP_SMBUS_IAP_CMD 0x00
|
||||
#define ETP_SMBUS_ENABLE_TP 0x20
|
||||
#define ETP_SMBUS_SLEEP_CMD 0x21
|
||||
#define ETP_SMBUS_IAP_PASSWORD_WRITE 0x29
|
||||
#define ETP_SMBUS_IAP_PASSWORD_READ 0x80
|
||||
#define ETP_SMBUS_WRITE_FW_BLOCK 0x2A
|
||||
#define ETP_SMBUS_IAP_RESET_CMD 0x2B
|
||||
#define ETP_SMBUS_RANGE_CMD 0xA0
|
||||
#define ETP_SMBUS_FW_VERSION_CMD 0xA1
|
||||
#define ETP_SMBUS_XY_TRACENUM_CMD 0xA2
|
||||
#define ETP_SMBUS_SM_VERSION_CMD 0xA3
|
||||
#define ETP_SMBUS_UNIQUEID_CMD 0xA3
|
||||
#define ETP_SMBUS_RESOLUTION_CMD 0xA4
|
||||
#define ETP_SMBUS_HELLOPACKET_CMD 0xA7
|
||||
#define ETP_SMBUS_PACKET_QUERY 0xA8
|
||||
#define ETP_SMBUS_IAP_VERSION_CMD 0xAC
|
||||
#define ETP_SMBUS_IAP_CTRL_CMD 0xAD
|
||||
#define ETP_SMBUS_IAP_CHECKSUM_CMD 0xAE
|
||||
#define ETP_SMBUS_FW_CHECKSUM_CMD 0xAF
|
||||
#define ETP_SMBUS_MAX_BASELINE_CMD 0xC3
|
||||
#define ETP_SMBUS_MIN_BASELINE_CMD 0xC4
|
||||
#define ETP_SMBUS_CALIBRATE_QUERY 0xC5
|
||||
|
||||
#define ETP_SMBUS_REPORT_LEN 32
|
||||
#define ETP_SMBUS_REPORT_OFFSET 2
|
||||
#define ETP_SMBUS_HELLOPACKET_LEN 5
|
||||
#define ETP_SMBUS_IAP_PASSWORD 0x1234
|
||||
#define ETP_SMBUS_IAP_MODE_ON (1 << 6)
|
||||
|
||||
static int elan_smbus_initialize(struct i2c_client *client)
|
||||
{
|
||||
u8 check[ETP_SMBUS_HELLOPACKET_LEN] = { 0x55, 0x55, 0x55, 0x55, 0x55 };
|
||||
u8 values[ETP_SMBUS_HELLOPACKET_LEN] = { 0, 0, 0, 0, 0 };
|
||||
int len, error;
|
||||
|
||||
/* Get hello packet */
|
||||
len = i2c_smbus_read_block_data(client,
|
||||
ETP_SMBUS_HELLOPACKET_CMD, values);
|
||||
if (len != ETP_SMBUS_HELLOPACKET_LEN) {
|
||||
dev_err(&client->dev, "hello packet length fail: %d\n", len);
|
||||
error = len < 0 ? len : -EIO;
|
||||
return error;
|
||||
}
|
||||
|
||||
/* compare hello packet */
|
||||
if (memcmp(values, check, ETP_SMBUS_HELLOPACKET_LEN)) {
|
||||
dev_err(&client->dev, "hello packet fail [%*px]\n",
|
||||
ETP_SMBUS_HELLOPACKET_LEN, values);
|
||||
return -ENXIO;
|
||||
}
|
||||
|
||||
/* enable tp */
|
||||
error = i2c_smbus_write_byte(client, ETP_SMBUS_ENABLE_TP);
|
||||
if (error) {
|
||||
dev_err(&client->dev, "failed to enable touchpad: %d\n", error);
|
||||
return error;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int elan_smbus_set_mode(struct i2c_client *client, u8 mode)
|
||||
{
|
||||
u8 cmd[4] = { 0x00, 0x07, 0x00, mode };
|
||||
|
||||
return i2c_smbus_write_block_data(client, ETP_SMBUS_IAP_CMD,
|
||||
sizeof(cmd), cmd);
|
||||
}
|
||||
|
||||
static int elan_smbus_sleep_control(struct i2c_client *client, bool sleep)
|
||||
{
|
||||
if (sleep)
|
||||
return i2c_smbus_write_byte(client, ETP_SMBUS_SLEEP_CMD);
|
||||
else
|
||||
return 0; /* XXX should we send ETP_SMBUS_ENABLE_TP here? */
|
||||
}
|
||||
|
||||
static int elan_smbus_power_control(struct i2c_client *client, bool enable)
|
||||
{
|
||||
return 0; /* A no-op */
|
||||
}
|
||||
|
||||
static int elan_smbus_calibrate(struct i2c_client *client)
|
||||
{
|
||||
u8 cmd[4] = { 0x00, 0x08, 0x00, 0x01 };
|
||||
|
||||
return i2c_smbus_write_block_data(client, ETP_SMBUS_IAP_CMD,
|
||||
sizeof(cmd), cmd);
|
||||
}
|
||||
|
||||
static int elan_smbus_calibrate_result(struct i2c_client *client, u8 *val)
|
||||
{
|
||||
int error;
|
||||
|
||||
error = i2c_smbus_read_block_data(client,
|
||||
ETP_SMBUS_CALIBRATE_QUERY, val);
|
||||
if (error < 0)
|
||||
return error;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int elan_smbus_get_baseline_data(struct i2c_client *client,
|
||||
bool max_baseline, u8 *value)
|
||||
{
|
||||
int error;
|
||||
u8 val[3];
|
||||
|
||||
error = i2c_smbus_read_block_data(client,
|
||||
max_baseline ?
|
||||
ETP_SMBUS_MAX_BASELINE_CMD :
|
||||
ETP_SMBUS_MIN_BASELINE_CMD,
|
||||
val);
|
||||
if (error < 0)
|
||||
return error;
|
||||
|
||||
*value = be16_to_cpup((__be16 *)val);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int elan_smbus_get_version(struct i2c_client *client,
|
||||
bool iap, u8 *version)
|
||||
{
|
||||
int error;
|
||||
u8 val[3];
|
||||
|
||||
error = i2c_smbus_read_block_data(client,
|
||||
iap ? ETP_SMBUS_IAP_VERSION_CMD :
|
||||
ETP_SMBUS_FW_VERSION_CMD,
|
||||
val);
|
||||
if (error < 0) {
|
||||
dev_err(&client->dev, "failed to get %s version: %d\n",
|
||||
iap ? "IAP" : "FW", error);
|
||||
return error;
|
||||
}
|
||||
|
||||
*version = val[2];
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int elan_smbus_get_sm_version(struct i2c_client *client, u8 *version)
|
||||
{
|
||||
int error;
|
||||
u8 val[3];
|
||||
|
||||
error = i2c_smbus_read_block_data(client,
|
||||
ETP_SMBUS_SM_VERSION_CMD, val);
|
||||
if (error < 0) {
|
||||
dev_err(&client->dev, "failed to get SM version: %d\n", error);
|
||||
return error;
|
||||
}
|
||||
|
||||
*version = val[0]; /* XXX Why 0 and not 2 as in IAP/FW versions? */
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int elan_smbus_get_product_id(struct i2c_client *client, u8 *id)
|
||||
{
|
||||
int error;
|
||||
u8 val[3];
|
||||
|
||||
error = i2c_smbus_read_block_data(client,
|
||||
ETP_SMBUS_UNIQUEID_CMD, val);
|
||||
if (error < 0) {
|
||||
dev_err(&client->dev, "failed to get product ID: %d\n", error);
|
||||
return error;
|
||||
}
|
||||
|
||||
*id = val[1];
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int elan_smbus_get_checksum(struct i2c_client *client,
|
||||
bool iap, u16 *csum)
|
||||
{
|
||||
int error;
|
||||
u8 val[3];
|
||||
|
||||
error = i2c_smbus_read_block_data(client,
|
||||
iap ? ETP_SMBUS_FW_CHECKSUM_CMD :
|
||||
ETP_SMBUS_IAP_CHECKSUM_CMD,
|
||||
val);
|
||||
if (error < 0) {
|
||||
dev_err(&client->dev, "failed to get %s checksum: %d\n",
|
||||
iap ? "IAP" : "FW", error);
|
||||
return error;
|
||||
}
|
||||
|
||||
*csum = be16_to_cpup((__be16 *)val);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int elan_smbus_get_max(struct i2c_client *client,
|
||||
unsigned int *max_x, unsigned int *max_y)
|
||||
{
|
||||
int error;
|
||||
u8 val[3];
|
||||
|
||||
error = i2c_smbus_read_block_data(client, ETP_SMBUS_RANGE_CMD, val);
|
||||
if (error) {
|
||||
dev_err(&client->dev, "failed to get dimensions: %d\n", error);
|
||||
return error;
|
||||
}
|
||||
|
||||
*max_x = (0x0f & val[0]) << 8 | val[1];
|
||||
*max_y = (0xf0 & val[0]) << 4 | val[2];
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int elan_smbus_get_resolution(struct i2c_client *client,
|
||||
u8 *hw_res_x, u8 *hw_res_y)
|
||||
{
|
||||
int error;
|
||||
u8 val[3];
|
||||
|
||||
error = i2c_smbus_read_block_data(client,
|
||||
ETP_SMBUS_RESOLUTION_CMD, val);
|
||||
if (error) {
|
||||
dev_err(&client->dev, "failed to get resolution: %d\n", error);
|
||||
return error;
|
||||
}
|
||||
|
||||
*hw_res_x = val[1] & 0x0F;
|
||||
*hw_res_y = (val[1] & 0xF0) >> 4;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int elan_smbus_get_num_traces(struct i2c_client *client,
|
||||
unsigned int *x_traces,
|
||||
unsigned int *y_traces)
|
||||
{
|
||||
int error;
|
||||
u8 val[3];
|
||||
|
||||
error = i2c_smbus_read_block_data(client,
|
||||
ETP_SMBUS_XY_TRACENUM_CMD, val);
|
||||
if (error) {
|
||||
dev_err(&client->dev, "failed to get trace info: %d\n", error);
|
||||
return error;
|
||||
}
|
||||
|
||||
*x_traces = val[1] - 1;
|
||||
*y_traces = val[2] - 1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int elan_smbus_iap_get_mode(struct i2c_client *client,
|
||||
enum tp_mode *mode)
|
||||
{
|
||||
int error;
|
||||
u16 constant;
|
||||
u8 val[3];
|
||||
|
||||
error = i2c_smbus_read_block_data(client, ETP_SMBUS_IAP_CTRL_CMD, val);
|
||||
if (error < 0) {
|
||||
dev_err(&client->dev, "failed to read iap ctrol register: %d\n",
|
||||
error);
|
||||
return error;
|
||||
}
|
||||
|
||||
constant = be16_to_cpup((__be16 *)val);
|
||||
dev_dbg(&client->dev, "iap control reg: 0x%04x.\n", constant);
|
||||
|
||||
*mode = (constant & ETP_SMBUS_IAP_MODE_ON) ? IAP_MODE : MAIN_MODE;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int elan_smbus_iap_reset(struct i2c_client *client)
|
||||
{
|
||||
int error;
|
||||
|
||||
error = i2c_smbus_write_byte(client, ETP_SMBUS_IAP_RESET_CMD);
|
||||
if (error) {
|
||||
dev_err(&client->dev, "cannot reset IC: %d\n", error);
|
||||
return error;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int elan_smbus_set_flash_key(struct i2c_client *client)
|
||||
{
|
||||
int error;
|
||||
u8 cmd[4] = { 0x00, 0x0B, 0x00, 0x5A };
|
||||
|
||||
error = i2c_smbus_write_block_data(client, ETP_SMBUS_IAP_CMD,
|
||||
sizeof(cmd), cmd);
|
||||
if (error) {
|
||||
dev_err(&client->dev, "cannot set flash key: %d\n", error);
|
||||
return error;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int elan_smbus_prepare_fw_update(struct i2c_client *client)
|
||||
{
|
||||
struct device *dev = &client->dev;
|
||||
int len;
|
||||
int error;
|
||||
enum tp_mode mode;
|
||||
u8 val[3];
|
||||
u8 cmd[4] = {0x0F, 0x78, 0x00, 0x06};
|
||||
u16 password;
|
||||
|
||||
/* Get FW in which mode (IAP_MODE/MAIN_MODE) */
|
||||
error = elan_smbus_iap_get_mode(client, &mode);
|
||||
if (error)
|
||||
return error;
|
||||
|
||||
if (mode == MAIN_MODE) {
|
||||
|
||||
/* set flash key */
|
||||
error = elan_smbus_set_flash_key(client);
|
||||
if (error)
|
||||
return error;
|
||||
|
||||
/* write iap password */
|
||||
if (i2c_smbus_write_byte(client,
|
||||
ETP_SMBUS_IAP_PASSWORD_WRITE) < 0) {
|
||||
dev_err(dev, "cannot write iap password\n");
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
error = i2c_smbus_write_block_data(client, ETP_SMBUS_IAP_CMD,
|
||||
sizeof(cmd), cmd);
|
||||
if (error) {
|
||||
dev_err(dev, "failed to write iap password: %d\n",
|
||||
error);
|
||||
return error;
|
||||
}
|
||||
|
||||
/*
|
||||
* Read back password to make sure we enabled flash
|
||||
* successfully.
|
||||
*/
|
||||
len = i2c_smbus_read_block_data(client,
|
||||
ETP_SMBUS_IAP_PASSWORD_READ,
|
||||
val);
|
||||
if (len < sizeof(u16)) {
|
||||
error = len < 0 ? len : -EIO;
|
||||
dev_err(dev, "failed to read iap password: %d\n",
|
||||
error);
|
||||
return error;
|
||||
}
|
||||
|
||||
password = be16_to_cpup((__be16 *)val);
|
||||
if (password != ETP_SMBUS_IAP_PASSWORD) {
|
||||
dev_err(dev, "wrong iap password = 0x%X\n", password);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
/* Wait 30ms for MAIN_MODE change to IAP_MODE */
|
||||
msleep(30);
|
||||
}
|
||||
|
||||
error = elan_smbus_set_flash_key(client);
|
||||
if (error)
|
||||
return error;
|
||||
|
||||
/* Reset IC */
|
||||
error = elan_smbus_iap_reset(client);
|
||||
if (error)
|
||||
return error;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static int elan_smbus_write_fw_block(struct i2c_client *client,
|
||||
const u8 *page, u16 checksum, int idx)
|
||||
{
|
||||
struct device *dev = &client->dev;
|
||||
int error;
|
||||
u16 result;
|
||||
u8 val[3];
|
||||
|
||||
/*
|
||||
* Due to the limitation of smbus protocol limiting
|
||||
* transfer to 32 bytes at a time, we must split block
|
||||
* in 2 transfers.
|
||||
*/
|
||||
error = i2c_smbus_write_block_data(client,
|
||||
ETP_SMBUS_WRITE_FW_BLOCK,
|
||||
ETP_FW_PAGE_SIZE / 2,
|
||||
page);
|
||||
if (error) {
|
||||
dev_err(dev, "Failed to write page %d (part %d): %d\n",
|
||||
idx, 1, error);
|
||||
return error;
|
||||
}
|
||||
|
||||
error = i2c_smbus_write_block_data(client,
|
||||
ETP_SMBUS_WRITE_FW_BLOCK,
|
||||
ETP_FW_PAGE_SIZE / 2,
|
||||
page + ETP_FW_PAGE_SIZE / 2);
|
||||
if (error) {
|
||||
dev_err(dev, "Failed to write page %d (part %d): %d\n",
|
||||
idx, 2, error);
|
||||
return error;
|
||||
}
|
||||
|
||||
|
||||
/* Wait for F/W to update one page ROM data. */
|
||||
usleep_range(8000, 10000);
|
||||
|
||||
error = i2c_smbus_read_block_data(client,
|
||||
ETP_SMBUS_IAP_CTRL_CMD, val);
|
||||
if (error < 0) {
|
||||
dev_err(dev, "Failed to read IAP write result: %d\n",
|
||||
error);
|
||||
return error;
|
||||
}
|
||||
|
||||
result = be16_to_cpup((__be16 *)val);
|
||||
if (result & (ETP_FW_IAP_PAGE_ERR | ETP_FW_IAP_INTF_ERR)) {
|
||||
dev_err(dev, "IAP reports failed write: %04hx\n",
|
||||
result);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int elan_smbus_get_report(struct i2c_client *client, u8 *report)
|
||||
{
|
||||
int len;
|
||||
|
||||
len = i2c_smbus_read_block_data(client,
|
||||
ETP_SMBUS_PACKET_QUERY,
|
||||
&report[ETP_SMBUS_REPORT_OFFSET]);
|
||||
if (len < 0) {
|
||||
dev_err(&client->dev, "failed to read report data: %d\n", len);
|
||||
return len;
|
||||
}
|
||||
|
||||
if (len != ETP_SMBUS_REPORT_LEN) {
|
||||
dev_err(&client->dev,
|
||||
"wrong report length (%d vs %d expected)\n",
|
||||
len, ETP_SMBUS_REPORT_LEN);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int elan_smbus_finish_fw_update(struct i2c_client *client,
|
||||
struct completion *fw_completion)
|
||||
{
|
||||
/* No special handling unlike I2C transport */
|
||||
return 0;
|
||||
}
|
||||
|
||||
const struct elan_transport_ops elan_smbus_ops = {
|
||||
.initialize = elan_smbus_initialize,
|
||||
.sleep_control = elan_smbus_sleep_control,
|
||||
.power_control = elan_smbus_power_control,
|
||||
.set_mode = elan_smbus_set_mode,
|
||||
|
||||
.calibrate = elan_smbus_calibrate,
|
||||
.calibrate_result = elan_smbus_calibrate_result,
|
||||
|
||||
.get_baseline_data = elan_smbus_get_baseline_data,
|
||||
|
||||
.get_version = elan_smbus_get_version,
|
||||
.get_sm_version = elan_smbus_get_sm_version,
|
||||
.get_product_id = elan_smbus_get_product_id,
|
||||
.get_checksum = elan_smbus_get_checksum,
|
||||
|
||||
.get_max = elan_smbus_get_max,
|
||||
.get_resolution = elan_smbus_get_resolution,
|
||||
.get_num_traces = elan_smbus_get_num_traces,
|
||||
|
||||
.iap_get_mode = elan_smbus_iap_get_mode,
|
||||
.iap_reset = elan_smbus_iap_reset,
|
||||
|
||||
.prepare_fw_update = elan_smbus_prepare_fw_update,
|
||||
.write_fw_block = elan_smbus_write_fw_block,
|
||||
.finish_fw_update = elan_smbus_finish_fw_update,
|
||||
|
||||
.get_report = elan_smbus_get_report,
|
||||
};
|
||||
Loading…
Reference in New Issue
Block a user