diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-08-06 06:24:15 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-08-06 06:24:15 +0300 |
commit | 39fada55274241d50e27eb961cc9280b5b6121fb (patch) | |
tree | 217ac8f085728251a45e2ac9bbcc6c79d4c53b8a | |
parent | f72035fad84c9b51a45fd8afc8024f3df0ba8848 (diff) | |
parent | 22fe874f380336315dd0440dad475ff326784b22 (diff) | |
download | linux-39fada55274241d50e27eb961cc9280b5b6121fb.tar.xz |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull more input updates from Dmitry Torokhov:
"Two new drivers for touchscreen controllers:
- Silead touchscreen controllers
- SiS 9200 family touchscreen controllers
and a few driver fixes"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: silead - remove some dead code
Input: sis-i2c - select CONFIG_CRC_ITU_T
Input: add driver for SiS 9200 family I2C touchscreen controllers
Input: ili210x - fix permissions on "calibrate" attribute
Input: elan_i2c - properly wake up touchpad on ASUS laptops
Input: add driver for Silead touchscreens
Input: elantech - fix debug dump of the current packet
Input: rotary_encoder - support binary encoding of states
Input: xpad - power off wireless 360 controllers on suspend
Input: i8042 - break load dependency between atkbd/psmouse and i8042
Input: synaptics-rmi4 - do not check for NULL when calling of_node_put()
Input: cros_ec_keyb - cleanup use of dev
-rw-r--r-- | Documentation/devicetree/bindings/input/rotary-encoder.txt | 4 | ||||
-rw-r--r-- | Documentation/devicetree/bindings/input/touchscreen/silead_gsl1680.txt | 36 | ||||
-rw-r--r-- | Documentation/devicetree/bindings/input/touchscreen/sis_i2c.txt | 33 | ||||
-rw-r--r-- | Documentation/devicetree/bindings/vendor-prefixes.txt | 1 | ||||
-rw-r--r-- | drivers/input/joystick/xpad.c | 43 | ||||
-rw-r--r-- | drivers/input/keyboard/cros_ec_keyb.c | 19 | ||||
-rw-r--r-- | drivers/input/misc/rotary_encoder.c | 23 | ||||
-rw-r--r-- | drivers/input/mouse/elan_i2c_core.c | 79 | ||||
-rw-r--r-- | drivers/input/mouse/elantech.c | 8 | ||||
-rw-r--r-- | drivers/input/rmi4/rmi_bus.c | 5 | ||||
-rw-r--r-- | drivers/input/serio/i8042.c | 16 | ||||
-rw-r--r-- | drivers/input/serio/libps2.c | 10 | ||||
-rw-r--r-- | drivers/input/touchscreen/Kconfig | 25 | ||||
-rw-r--r-- | drivers/input/touchscreen/Makefile | 2 | ||||
-rw-r--r-- | drivers/input/touchscreen/ili210x.c | 2 | ||||
-rw-r--r-- | drivers/input/touchscreen/silead.c | 565 | ||||
-rw-r--r-- | drivers/input/touchscreen/sis_i2c.c | 413 | ||||
-rw-r--r-- | include/linux/i8042.h | 6 | ||||
-rw-r--r-- | include/linux/serio.h | 24 |
19 files changed, 1244 insertions, 70 deletions
diff --git a/Documentation/devicetree/bindings/input/rotary-encoder.txt b/Documentation/devicetree/bindings/input/rotary-encoder.txt index 6c9f0c8a846c..e85ce3dea480 100644 --- a/Documentation/devicetree/bindings/input/rotary-encoder.txt +++ b/Documentation/devicetree/bindings/input/rotary-encoder.txt @@ -20,6 +20,8 @@ Optional properties: 2: Half-period mode 4: Quarter-period mode - wakeup-source: Boolean, rotary encoder can wake up the system. +- rotary-encoder,encoding: String, the method used to encode steps. + Supported are "gray" (the default and more common) and "binary". Deprecated properties: - rotary-encoder,half-period: Makes the driver work on half-period mode. @@ -34,6 +36,7 @@ Example: compatible = "rotary-encoder"; gpios = <&gpio 19 1>, <&gpio 20 0>; /* GPIO19 is inverted */ linux,axis = <0>; /* REL_X */ + rotary-encoder,encoding = "gray"; rotary-encoder,relative-axis; }; @@ -42,5 +45,6 @@ Example: gpios = <&gpio 21 0>, <&gpio 22 0>; linux,axis = <1>; /* ABS_Y */ rotary-encoder,steps = <24>; + rotary-encoder,encoding = "binary"; rotary-encoder,rollover; }; diff --git a/Documentation/devicetree/bindings/input/touchscreen/silead_gsl1680.txt b/Documentation/devicetree/bindings/input/touchscreen/silead_gsl1680.txt new file mode 100644 index 000000000000..1112e0d794e1 --- /dev/null +++ b/Documentation/devicetree/bindings/input/touchscreen/silead_gsl1680.txt @@ -0,0 +1,36 @@ +* GSL 1680 touchscreen controller + +Required properties: +- compatible : "silead,gsl1680" +- reg : I2C slave address of the chip (0x40) +- interrupt-parent : a phandle pointing to the interrupt controller + serving the interrupt for this chip +- interrupts : interrupt specification for the gsl1680 interrupt +- power-gpios : Specification for the pin connected to the gsl1680's + shutdown input. This needs to be driven high to take the + gsl1680 out of its low power state +- touchscreen-size-x : See touchscreen.txt +- touchscreen-size-y : See touchscreen.txt + +Optional properties: +- touchscreen-inverted-x : See touchscreen.txt +- touchscreen-inverted-y : See touchscreen.txt +- touchscreen-swapped-x-y : See touchscreen.txt +- silead,max-fingers : maximum number of fingers the touchscreen can detect + +Example: + +i2c@00000000 { + gsl1680: touchscreen@40 { + compatible = "silead,gsl1680"; + reg = <0x40>; + interrupt-parent = <&pio>; + interrupts = <6 11 IRQ_TYPE_EDGE_FALLING>; + power-gpios = <&pio 1 3 GPIO_ACTIVE_HIGH>; + touchscreen-size-x = <480>; + touchscreen-size-y = <800>; + touchscreen-inverted-x; + touchscreen-swapped-x-y; + silead,max-fingers = <5>; + }; +}; diff --git a/Documentation/devicetree/bindings/input/touchscreen/sis_i2c.txt b/Documentation/devicetree/bindings/input/touchscreen/sis_i2c.txt new file mode 100644 index 000000000000..d87ad14f1efe --- /dev/null +++ b/Documentation/devicetree/bindings/input/touchscreen/sis_i2c.txt @@ -0,0 +1,33 @@ +* SiS I2C Multiple Touch Controller + +Required properties: +- compatible: must be "sis,9200-ts" +- reg: i2c slave address +- interrupt-parent: the phandle for the interrupt controller + (see interrupt binding [0]) +- interrupts: touch controller interrupt (see interrupt + binding [0]) + +Optional properties: +- pinctrl-names: should be "default" (see pinctrl binding [1]). +- pinctrl-0: a phandle pointing to the pin settings for the + device (see pinctrl binding [1]). +- attn-gpios: the gpio pin used as attention line +- reset-gpios: the gpio pin used to reset the controller +- wakeup-source: touchscreen can be used as a wakeup source + +[0]: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt +[1]: Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt + +Example: + + sis9255@5c { + compatible = "sis,9200-ts"; + reg = <0x5c>; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_sis>; + interrupt-parent = <&gpio3>; + interrupts = <19 IRQ_TYPE_EDGE_FALLING>; + irq-gpios = <&gpio3 19 GPIO_ACTIVE_LOW>; + reset-gpios = <&gpio2 30 GPIO_ACTIVE_LOW>; + }; diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt index 68391a462c0a..1992aa97d45a 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.txt +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt @@ -238,6 +238,7 @@ simtek sii Seiko Instruments, Inc. silergy Silergy Corp. sirf SiRF Technology, Inc. +sis Silicon Integrated Systems Corp. sitronix Sitronix Technology Corporation skyworks Skyworks Solutions, Inc. smsc Standard Microsystems Corporation diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c index a529a4535457..83af17ad0f1f 100644 --- a/drivers/input/joystick/xpad.c +++ b/drivers/input/joystick/xpad.c @@ -115,6 +115,10 @@ static bool sticks_to_null; module_param(sticks_to_null, bool, S_IRUGO); MODULE_PARM_DESC(sticks_to_null, "Do not map sticks at all for unknown pads"); +static bool auto_poweroff = true; +module_param(auto_poweroff, bool, S_IWUSR | S_IRUGO); +MODULE_PARM_DESC(auto_poweroff, "Power off wireless controllers on suspend"); + static const struct xpad_device { u16 idVendor; u16 idProduct; @@ -1248,6 +1252,36 @@ static void xpad_stop_input(struct usb_xpad *xpad) usb_kill_urb(xpad->irq_in); } +static void xpad360w_poweroff_controller(struct usb_xpad *xpad) +{ + unsigned long flags; + struct xpad_output_packet *packet = + &xpad->out_packets[XPAD_OUT_CMD_IDX]; + + spin_lock_irqsave(&xpad->odata_lock, flags); + + packet->data[0] = 0x00; + packet->data[1] = 0x00; + packet->data[2] = 0x08; + packet->data[3] = 0xC0; + packet->data[4] = 0x00; + packet->data[5] = 0x00; + packet->data[6] = 0x00; + packet->data[7] = 0x00; + packet->data[8] = 0x00; + packet->data[9] = 0x00; + packet->data[10] = 0x00; + packet->data[11] = 0x00; + packet->len = 12; + packet->pending = true; + + /* Reset the sequence so we send out poweroff now */ + xpad->last_out_packet = -1; + xpad_try_sending_next_out_packet(xpad); + + spin_unlock_irqrestore(&xpad->odata_lock, flags); +} + static int xpad360w_start_input(struct usb_xpad *xpad) { int error; @@ -1590,6 +1624,15 @@ static int xpad_suspend(struct usb_interface *intf, pm_message_t message) * or goes away. */ xpad360w_stop_input(xpad); + + /* + * The wireless adapter is going off now, so the + * gamepads are going to become disconnected. + * Unless explicitly disabled, power them down + * so they don't just sit there flashing. + */ + if (auto_poweroff && xpad->pad_present) + xpad360w_poweroff_controller(xpad); } else { mutex_lock(&input->mutex); if (input->users) diff --git a/drivers/input/keyboard/cros_ec_keyb.c b/drivers/input/keyboard/cros_ec_keyb.c index b01966dc7eb3..4b0878f35471 100644 --- a/drivers/input/keyboard/cros_ec_keyb.c +++ b/drivers/input/keyboard/cros_ec_keyb.c @@ -186,7 +186,7 @@ static irqreturn_t cros_ec_keyb_irq(int irq, void *data) if (ret >= 0) cros_ec_keyb_process(ckdev, kb_state, ret); else - dev_err(ec->dev, "failed to get keyboard state: %d\n", ret); + dev_err(ckdev->dev, "failed to get keyboard state: %d\n", ret); return IRQ_HANDLED; } @@ -236,7 +236,7 @@ static void cros_ec_keyb_compute_valid_keys(struct cros_ec_keyb *ckdev) static int cros_ec_keyb_probe(struct platform_device *pdev) { struct cros_ec_device *ec = dev_get_drvdata(pdev->dev.parent); - struct device *dev = ec->dev; + struct device *dev = &pdev->dev; struct cros_ec_keyb *ckdev; struct input_dev *idev; struct device_node *np; @@ -246,23 +246,22 @@ static int cros_ec_keyb_probe(struct platform_device *pdev) if (!np) return -ENODEV; - ckdev = devm_kzalloc(&pdev->dev, sizeof(*ckdev), GFP_KERNEL); + ckdev = devm_kzalloc(dev, sizeof(*ckdev), GFP_KERNEL); if (!ckdev) return -ENOMEM; - err = matrix_keypad_parse_of_params(&pdev->dev, &ckdev->rows, - &ckdev->cols); + err = matrix_keypad_parse_of_params(dev, &ckdev->rows, &ckdev->cols); if (err) return err; - ckdev->valid_keys = devm_kzalloc(&pdev->dev, ckdev->cols, GFP_KERNEL); + ckdev->valid_keys = devm_kzalloc(dev, ckdev->cols, GFP_KERNEL); if (!ckdev->valid_keys) return -ENOMEM; - ckdev->old_kb_state = devm_kzalloc(&pdev->dev, ckdev->cols, GFP_KERNEL); + ckdev->old_kb_state = devm_kzalloc(dev, ckdev->cols, GFP_KERNEL); if (!ckdev->old_kb_state) return -ENOMEM; - idev = devm_input_allocate_device(&pdev->dev); + idev = devm_input_allocate_device(dev); if (!idev) return -ENOMEM; @@ -273,7 +272,7 @@ static int cros_ec_keyb_probe(struct platform_device *pdev) ckdev->ec = ec; ckdev->dev = dev; - dev_set_drvdata(&pdev->dev, ckdev); + dev_set_drvdata(dev, ckdev); idev->name = CROS_EC_DEV_NAME; idev->phys = ec->phys_name; @@ -282,7 +281,7 @@ static int cros_ec_keyb_probe(struct platform_device *pdev) idev->id.bustype = BUS_VIRTUAL; idev->id.version = 1; idev->id.product = 0; - idev->dev.parent = &pdev->dev; + idev->dev.parent = dev; idev->open = cros_ec_keyb_open; idev->close = cros_ec_keyb_close; diff --git a/drivers/input/misc/rotary_encoder.c b/drivers/input/misc/rotary_encoder.c index c7fc8d4fb080..1588aecafff7 100644 --- a/drivers/input/misc/rotary_encoder.c +++ b/drivers/input/misc/rotary_encoder.c @@ -28,6 +28,11 @@ #define DRV_NAME "rotary-encoder" +enum rotary_encoder_encoding { + ROTENC_GRAY, + ROTENC_BINARY, +}; + struct rotary_encoder { struct input_dev *input; @@ -37,6 +42,7 @@ struct rotary_encoder { u32 axis; bool relative_axis; bool rollover; + enum rotary_encoder_encoding encoding; unsigned int pos; @@ -57,8 +63,9 @@ static unsigned int rotary_encoder_get_state(struct rotary_encoder *encoder) for (i = 0; i < encoder->gpios->ndescs; ++i) { int val = gpiod_get_value_cansleep(encoder->gpios->desc[i]); + /* convert from gray encoding to normal */ - if (ret & 1) + if (encoder->encoding == ROTENC_GRAY && ret & 1) val = !val; ret = ret << 1 | val; @@ -213,6 +220,20 @@ static int rotary_encoder_probe(struct platform_device *pdev) encoder->rollover = device_property_read_bool(dev, "rotary-encoder,rollover"); + if (!device_property_present(dev, "rotary-encoder,encoding") || + !device_property_match_string(dev, "rotary-encoder,encoding", + "gray")) { + dev_info(dev, "gray"); + encoder->encoding = ROTENC_GRAY; + } else if (!device_property_match_string(dev, "rotary-encoder,encoding", + "binary")) { + dev_info(dev, "binary"); + encoder->encoding = ROTENC_BINARY; + } else { + dev_err(dev, "unknown encoding setting\n"); + return -EINVAL; + } + device_property_read_u32(dev, "linux,axis", &encoder->axis); encoder->relative_axis = device_property_read_bool(dev, "rotary-encoder,relative-axis"); diff --git a/drivers/input/mouse/elan_i2c_core.c b/drivers/input/mouse/elan_i2c_core.c index 2f589857a039..d15b33813021 100644 --- a/drivers/input/mouse/elan_i2c_core.c +++ b/drivers/input/mouse/elan_i2c_core.c @@ -4,7 +4,8 @@ * Copyright (c) 2013 ELAN Microelectronics Corp. * * Author: 林政維 (Duson Lin) <dusonlin@emc.com.tw> - * Version: 1.6.0 + * Author: KT Liao <kt.liao@emc.com.tw> + * Version: 1.6.2 * * Based on cyapa driver: * copyright (c) 2011-2012 Cypress Semiconductor, Inc. @@ -40,7 +41,7 @@ #include "elan_i2c.h" #define DRIVER_NAME "elan_i2c" -#define ELAN_DRIVER_VERSION "1.6.1" +#define ELAN_DRIVER_VERSION "1.6.2" #define ELAN_VENDOR_ID 0x04f3 #define ETP_MAX_PRESSURE 255 #define ETP_FWIDTH_REDUCE 90 @@ -199,9 +200,41 @@ static int elan_sleep(struct elan_tp_data *data) return error; } +static int elan_query_product(struct elan_tp_data *data) +{ + int error; + + error = data->ops->get_product_id(data->client, &data->product_id); + if (error) + return error; + + error = data->ops->get_sm_version(data->client, &data->ic_type, + &data->sm_version); + if (error) + return error; + + return 0; +} + +static int elan_check_ASUS_special_fw(struct elan_tp_data *data) +{ + if (data->ic_type != 0x0E) + return false; + + switch (data->product_id) { + case 0x05 ... 0x07: + case 0x09: + case 0x13: + return true; + default: + return false; + } +} + static int __elan_initialize(struct elan_tp_data *data) { struct i2c_client *client = data->client; + bool woken_up = false; int error; error = data->ops->initialize(client); @@ -210,6 +243,27 @@ static int __elan_initialize(struct elan_tp_data *data) return error; } + error = elan_query_product(data); + if (error) + return error; + + /* + * Some ASUS devices were shipped with firmware that requires + * touchpads to be woken up first, before attempting to switch + * them into absolute reporting mode. + */ + if (elan_check_ASUS_special_fw(data)) { + error = data->ops->sleep_control(client, false); + if (error) { + dev_err(&client->dev, + "failed to wake device up: %d\n", error); + return error; + } + + msleep(200); + woken_up = true; + } + data->mode |= ETP_ENABLE_ABS; error = data->ops->set_mode(client, data->mode); if (error) { @@ -218,11 +272,13 @@ static int __elan_initialize(struct elan_tp_data *data) return error; } - error = data->ops->sleep_control(client, false); - if (error) { - dev_err(&client->dev, - "failed to wake device up: %d\n", error); - return error; + if (!woken_up) { + error = data->ops->sleep_control(client, false); + if (error) { + dev_err(&client->dev, + "failed to wake device up: %d\n", error); + return error; + } } return 0; @@ -248,10 +304,6 @@ static int elan_query_device_info(struct elan_tp_data *data) { int error; - error = data->ops->get_product_id(data->client, &data->product_id); - if (error) - return error; - error = data->ops->get_version(data->client, false, &data->fw_version); if (error) return error; @@ -261,11 +313,6 @@ static int elan_query_device_info(struct elan_tp_data *data) if (error) return error; - error = data->ops->get_sm_version(data->client, &data->ic_type, - &data->sm_version); - if (error) - return error; - error = data->ops->get_version(data->client, true, &data->iap_version); if (error) return error; diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index 615d23ec0d8e..08e252a42480 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -222,12 +222,8 @@ static int elantech_write_reg(struct psmouse *psmouse, unsigned char reg, */ static void elantech_packet_dump(struct psmouse *psmouse) { - int i; - - psmouse_printk(KERN_DEBUG, psmouse, "PS/2 packet ["); - for (i = 0; i < psmouse->pktsize; i++) - printk("%s0x%02x ", i ? ", " : " ", psmouse->packet[i]); - printk("]\n"); + psmouse_printk(KERN_DEBUG, psmouse, "PS/2 packet [%*ph]\n", + psmouse->pktsize, psmouse->packet); } /* diff --git a/drivers/input/rmi4/rmi_bus.c b/drivers/input/rmi4/rmi_bus.c index 253df96be427..a73580654c6b 100644 --- a/drivers/input/rmi4/rmi_bus.c +++ b/drivers/input/rmi4/rmi_bus.c @@ -232,10 +232,7 @@ err_put_device: void rmi_unregister_function(struct rmi_function *fn) { device_del(&fn->dev); - - if (fn->dev.of_node) - of_node_put(fn->dev.of_node); - + of_node_put(fn->dev.of_node); put_device(&fn->dev); } diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c index 454195709a82..b4d34086e73f 100644 --- a/drivers/input/serio/i8042.c +++ b/drivers/input/serio/i8042.c @@ -1277,6 +1277,7 @@ static int __init i8042_create_kbd_port(void) serio->start = i8042_start; serio->stop = i8042_stop; serio->close = i8042_port_close; + serio->ps2_cmd_mutex = &i8042_mutex; serio->port_data = port; serio->dev.parent = &i8042_platform_device->dev; strlcpy(serio->name, "i8042 KBD port", sizeof(serio->name)); @@ -1373,21 +1374,6 @@ static void i8042_unregister_ports(void) } } -/* - * Checks whether port belongs to i8042 controller. - */ -bool i8042_check_port_owner(const struct serio *port) -{ - int i; - - for (i = 0; i < I8042_NUM_PORTS; i++) - if (i8042_ports[i].serio == port) - return true; - - return false; -} -EXPORT_SYMBOL(i8042_check_port_owner); - static void i8042_free_irqs(void) { if (i8042_aux_irq_registered) diff --git a/drivers/input/serio/libps2.c b/drivers/input/serio/libps2.c index 316f2c897101..83e9c663aa67 100644 --- a/drivers/input/serio/libps2.c +++ b/drivers/input/serio/libps2.c @@ -56,19 +56,17 @@ EXPORT_SYMBOL(ps2_sendbyte); void ps2_begin_command(struct ps2dev *ps2dev) { - mutex_lock(&ps2dev->cmd_mutex); + struct mutex *m = ps2dev->serio->ps2_cmd_mutex ?: &ps2dev->cmd_mutex; - if (i8042_check_port_owner(ps2dev->serio)) - i8042_lock_chip(); + mutex_lock(m); } EXPORT_SYMBOL(ps2_begin_command); void ps2_end_command(struct ps2dev *ps2dev) { - if (i8042_check_port_owner(ps2dev->serio)) - i8042_unlock_chip(); + struct mutex *m = ps2dev->serio->ps2_cmd_mutex ?: &ps2dev->cmd_mutex; - mutex_unlock(&ps2dev->cmd_mutex); + mutex_unlock(m); } EXPORT_SYMBOL(ps2_end_command); diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index ee02dc7422bd..2fb1f430a431 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -1059,6 +1059,31 @@ config TOUCHSCREEN_RM_TS To compile this driver as a module, choose M here: the module will be called raydium_i2c_ts. +config TOUCHSCREEN_SILEAD + tristate "Silead I2C touchscreen" + depends on I2C + help + Say Y here if you have the Silead touchscreen connected to + your system. + + If unsure, say N. + + To compile this driver as a module, choose M here: the + module will be called silead. + +config TOUCHSCREEN_SIS_I2C + tristate "SiS 9200 family I2C touchscreen" + depends on I2C + select CRC_ITU_T + depends on GPIOLIB || COMPILE_TEST + help + This enables support for SiS 9200 family over I2C based touchscreens. + + If unsure, say N. + + To compile this driver as a module, choose M here: the + module will be called sis_i2c. + config TOUCHSCREEN_ST1232 tristate "Sitronix ST1232 touchscreen controllers" depends on I2C diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index 3315882905f7..b4373d6be402 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile @@ -64,6 +64,8 @@ obj-$(CONFIG_TOUCHSCREEN_PENMOUNT) += penmount.o obj-$(CONFIG_TOUCHSCREEN_PIXCIR) += pixcir_i2c_ts.o obj-$(CONFIG_TOUCHSCREEN_RM_TS) += raydium_i2c_ts.o obj-$(CONFIG_TOUCHSCREEN_S3C2410) += s3c2410_ts.o +obj-$(CONFIG_TOUCHSCREEN_SILEAD) += silead.o +obj-$(CONFIG_TOUCHSCREEN_SIS_I2C) += sis_i2c.o obj-$(CONFIG_TOUCHSCREEN_ST1232) += st1232.o obj-$(CONFIG_TOUCHSCREEN_STMPE) += stmpe-ts.o obj-$(CONFIG_TOUCHSCREEN_SUN4I) += sun4i-ts.o diff --git a/drivers/input/touchscreen/ili210x.c b/drivers/input/touchscreen/ili210x.c index ddf694b9fffc..fe4848bd1f4c 100644 --- a/drivers/input/touchscreen/ili210x.c +++ b/drivers/input/touchscreen/ili210x.c @@ -169,7 +169,7 @@ static ssize_t ili210x_calibrate(struct device *dev, return count; } -static DEVICE_ATTR(calibrate, 0644, NULL, ili210x_calibrate); +static DEVICE_ATTR(calibrate, S_IWUSR, NULL, ili210x_calibrate); static struct attribute *ili210x_attributes[] = { &dev_attr_calibrate.attr, diff --git a/drivers/input/touchscreen/silead.c b/drivers/input/touchscreen/silead.c new file mode 100644 index 000000000000..7379fe153cf9 --- /dev/null +++ b/drivers/input/touchscreen/silead.c @@ -0,0 +1,565 @@ +/* ------------------------------------------------------------------------- + * Copyright (C) 2014-2015, Intel Corporation + * + * Derived from: + * gslX68X.c + * Copyright (C) 2010-2015, Shanghai Sileadinc Co.Ltd + * + * 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. + * ------------------------------------------------------------------------- + */ + +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/acpi.h> +#include <linux/interrupt.h> +#include <linux/gpio/consumer.h> +#include <linux/delay.h> +#include <linux/firmware.h> +#include <linux/input.h> +#include <linux/input/mt.h> +#include <linux/input/touchscreen.h> +#include <linux/pm.h> +#include <linux/irq.h> + +#include <asm/unaligned.h> + +#define SILEAD_TS_NAME "silead_ts" + +#define SILEAD_REG_RESET 0xE0 +#define SILEAD_REG_DATA 0x80 +#define SILEAD_REG_TOUCH_NR 0x80 +#define SILEAD_REG_POWER 0xBC +#define SILEAD_REG_CLOCK 0xE4 +#define SILEAD_REG_STATUS 0xB0 +#define SILEAD_REG_ID 0xFC +#define SILEAD_REG_MEM_CHECK 0xB0 + +#define SILEAD_STATUS_OK 0x5A5A5A5A +#define SILEAD_TS_DATA_LEN 44 +#define SILEAD_CLOCK 0x04 + +#define SILEAD_CMD_RESET 0x88 +#define SILEAD_CMD_START 0x00 + +#define SILEAD_POINT_DATA_LEN 0x04 +#define SILEAD_POINT_Y_OFF 0x00 +#define SILEAD_POINT_Y_MSB_OFF 0x01 +#define SILEAD_POINT_X_OFF 0x02 +#define SILEAD_POINT_X_MSB_OFF 0x03 +#define SILEAD_TOUCH_ID_MASK 0xF0 + +#define SILEAD_CMD_SLEEP_MIN 10000 +#define SILEAD_CMD_SLEEP_MAX 20000 +#define SILEAD_POWER_SLEEP 20 +#define SILEAD_STARTUP_SLEEP 30 + +#define SILEAD_MAX_FINGERS 10 + +enum silead_ts_power { + SILEAD_POWER_ON = 1, + SILEAD_POWER_OFF = 0 +}; + +struct silead_ts_data { + struct i2c_client *client; + struct gpio_desc *gpio_power; + struct input_dev *input; + char fw_name[64]; + struct touchscreen_properties prop; + u32 max_fingers; + u32 chip_id; + struct input_mt_pos pos[SILEAD_MAX_FINGERS]; + int slots[SILEAD_MAX_FINGERS]; + int id[SILEAD_MAX_FINGERS]; +}; + +struct silead_fw_data { + u32 offset; + u32 val; +}; + +static int silead_ts_request_input_dev(struct silead_ts_data *data) +{ + struct device *dev = &data->client->dev; + int error; + + data->input = devm_input_allocate_device(dev); + if (!data->input) { + dev_err(dev, + "Failed to allocate input device\n"); + return -ENOMEM; + } + + input_set_abs_params(data->input, ABS_MT_POSITION_X, 0, 4095, 0, 0); + input_set_abs_params(data->input, ABS_MT_POSITION_Y, 0, 4095, 0, 0); + touchscreen_parse_properties(data->input, true, &data->prop); + + input_mt_init_slots(data->input, data->max_fingers, + INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED | + INPUT_MT_TRACK); + + data->input->name = SILEAD_TS_NAME; + data->input->phys = "input/ts"; + data->input->id.bustype = BUS_I2C; + + error = input_register_device(data->input); + if (error) { + dev_err(dev, "Failed to register input device: %d\n", error); + return error; + } + + return 0; +} + +static void silead_ts_set_power(struct i2c_client *client, + enum silead_ts_power state) +{ + struct silead_ts_data *data = i2c_get_clientdata(client); + + if (data->gpio_power) { + gpiod_set_value_cansleep(data->gpio_power, state); + msleep(SILEAD_POWER_SLEEP); + } +} + +static void silead_ts_read_data(struct i2c_client *client) +{ + struct silead_ts_data *data = i2c_get_clientdata(client); + struct input_dev *input = data->input; + struct device *dev = &client->dev; + u8 *bufp, buf[SILEAD_TS_DATA_LEN]; + int touch_nr, error, i; + + error = i2c_smbus_read_i2c_block_data(client, SILEAD_REG_DATA, + SILEAD_TS_DATA_LEN, buf); + if (error < 0) { + dev_err(dev, "Data read error %d\n", error); + return; + } + + touch_nr = buf[0]; + if (touch_nr > data->max_fingers) { + dev_warn(dev, "More touches reported then supported %d > %d\n", + touch_nr, data->max_fingers); + touch_nr = data->max_fingers; + } + + bufp = buf + SILEAD_POINT_DATA_LEN; + for (i = 0; i < touch_nr; i++, bufp += SILEAD_POINT_DATA_LEN) { + /* Bits 4-7 are the touch id */ + data->id[i] = (bufp[SILEAD_POINT_X_MSB_OFF] & + SILEAD_TOUCH_ID_MASK) >> 4; + touchscreen_set_mt_pos(&data->pos[i], &data->prop, + get_unaligned_le16(&bufp[SILEAD_POINT_X_OFF]) & 0xfff, + get_unaligned_le16(&bufp[SILEAD_POINT_Y_OFF]) & 0xfff); + } + + input_mt_assign_slots(input, data->slots, data->pos, touch_nr, 0); + + for (i = 0; i < touch_nr; i++) { + input_mt_slot(input, data->slots[i]); + input_mt_report_slot_state(input, MT_TOOL_FINGER, true); + input_report_abs(input, ABS_MT_POSITION_X, data->pos[i].x); + input_report_abs(input, ABS_MT_POSITION_Y, data->pos[i].y); + + dev_dbg(dev, "x=%d y=%d hw_id=%d sw_id=%d\n", data->pos[i].x, + data->pos[i].y, data->id[i], data->slots[i]); + } + + input_mt_sync_frame(input); + input_sync(input); +} + +static int silead_ts_init(struct i2c_client *client) +{ + struct silead_ts_data *data = i2c_get_clientdata(client); + int error; + + error = i2c_smbus_write_byte_data(client, SILEAD_REG_RESET, + SILEAD_CMD_RESET); + if (error) + goto i2c_write_err; + usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX); + + error = i2c_smbus_write_byte_data(client, SILEAD_REG_TOUCH_NR, + data->max_fingers); + if (error) + goto i2c_write_err; + usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX); + + error = i2c_smbus_write_byte_data(client, SILEAD_REG_CLOCK, + SILEAD_CLOCK); + if (error) + goto i2c_write_err; + usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX); + + error = i2c_smbus_write_byte_data(client, SILEAD_REG_RESET, + SILEAD_CMD_START); + if (error) + goto i2c_write_err; + usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX); + + return 0; + +i2c_write_err: + dev_err(&client->dev, "Registers clear error %d\n", error); + return error; +} + +static int silead_ts_reset(struct i2c_client *client) +{ + int error; + + error = i2c_smbus_write_byte_data(client, SILEAD_REG_RESET, + SILEAD_CMD_RESET); + if (error) + goto i2c_write_err; + usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX); + + error = i2c_smbus_write_byte_data(client, SILEAD_REG_CLOCK, + SILEAD_CLOCK); + if (error) + goto i2c_write_err; + usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX); + + error = i2c_smbus_write_byte_data(client, SILEAD_REG_POWER, + SILEAD_CMD_START); + if (error) + goto i2c_write_err; + usleep_range(SILEAD_CMD_SLEEP_MIN, SILEAD_CMD_SLEEP_MAX); + + return 0; + +i2c_write_err: + dev_err(&client->dev, "Chip reset error %d\n", error); + return error; +} + +static int silead_ts_startup(struct i2c_client *client) +{ + int error; + + error = i2c_smbus_write_byte_data(client, SILEAD_REG_RESET, 0x00); + if (error) { + dev_err(&client->dev, "Startup error %d\n", error); + return error; + } + + msleep(SILEAD_STARTUP_SLEEP); + + return 0; +} + +static int silead_ts_load_fw(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct silead_ts_data *data = i2c_get_clientdata(client); + unsigned int fw_size, i; + const struct firmware *fw; + struct silead_fw_data *fw_data; + int error; + + dev_dbg(dev, "Firmware file name: %s", data->fw_name); + + error = request_firmware(&fw, data->fw_name, dev); + if (error) { + dev_err(dev, "Firmware request error %d\n", error); + return error; + } + + fw_size = fw->size / sizeof(*fw_data); + fw_data = (struct silead_fw_data *)fw->data; + + for (i = 0; i < fw_size; i++) { + error = i2c_smbus_write_i2c_block_data(client, + fw_data[i].offset, + 4, + (u8 *)&fw_data[i].val); + if (error) { + dev_err(dev, "Firmware load error %d\n", error); + break; + } + } + + release_firmware(fw); + return error ?: 0; +} + +static u32 silead_ts_get_status(struct i2c_client *client) +{ + int error; + __le32 status; + + error = i2c_smbus_read_i2c_block_data(client, SILEAD_REG_STATUS, + sizeof(status), (u8 *)&status); + if (error < 0) { + dev_err(&client->dev, "Status read error %d\n", error); + return error; + } + + return le32_to_cpu(status); +} + +static int silead_ts_get_id(struct i2c_client *client) +{ + struct silead_ts_data *data = i2c_get_clientdata(client); + __le32 chip_id; + int error; + + error = i2c_smbus_read_i2c_block_data(client, SILEAD_REG_ID, + sizeof(chip_id), (u8 *)&chip_id); + if (error < 0) { + dev_err(&client->dev, "Chip ID read error %d\n", error); + return error; + } + + data->chip_id = le32_to_cpu(chip_id); + dev_info(&client->dev, "Silead chip ID: 0x%8X", data->chip_id); + + return 0; +} + +static int silead_ts_setup(struct i2c_client *client) +{ + int error; + u32 status; + + silead_ts_set_power(client, SILEAD_POWER_OFF); + silead_ts_set_power(client, SILEAD_POWER_ON); + + error = silead_ts_get_id(client); + if (error) + return error; + + error = silead_ts_init(client); + if (error) + return error; + + error = silead_ts_reset(client); + if (error) + return error; + + error = silead_ts_load_fw(client); + if (error) + return error; + + error = silead_ts_startup(client); + if (error) + return error; + + status = silead_ts_get_status(client); + if (status != SILEAD_STATUS_OK) { + dev_err(&client->dev, + "Initialization error, status: 0x%X\n", status); + return -ENODEV; + } + + return 0; +} + +static irqreturn_t silead_ts_threaded_irq_handler(int irq, void *id) +{ + struct silead_ts_data *data = id; + struct i2c_client *client = data->client; + + silead_ts_read_data(client); + + return IRQ_HANDLED; +} + +static void silead_ts_read_props(struct i2c_client *client) +{ + struct silead_ts_data *data = i2c_get_clientdata(client); + struct device *dev = &client->dev; + const char *str; + int error; + + error = device_property_read_u32(dev, "silead,max-fingers", + &data->max_fingers); + if (error) { + dev_dbg(dev, "Max fingers read error %d\n", error); + data->max_fingers = 5; /* Most devices handle up-to 5 fingers */ + } + + error = device_property_read_string(dev, "touchscreen-fw-name", &str); + if (!error) + snprintf(data->fw_name, sizeof(data->fw_name), "%s", str); + else + dev_dbg(dev, "Firmware file name read error. Using default."); +} + +#ifdef CONFIG_ACPI +static int silead_ts_set_default_fw_name(struct silead_ts_data *data, + const struct i2c_device_id *id) +{ + const struct acpi_device_id *acpi_id; + struct device *dev = &data->client->dev; + int i; + + if (ACPI_HANDLE(dev)) { + acpi_id = acpi_match_device(dev->driver->acpi_match_table, dev); + if (!acpi_id) + return -ENODEV; + + snprintf(data->fw_name, sizeof(data->fw_name), "%s.fw", + acpi_id->id); + + for (i = 0; i < strlen(data->fw_name); i++) + data->fw_name[i] = tolower(data->fw_name[i]); + } else { + snprintf(data->fw_name, sizeof(data->fw_name), "%s.fw", + id->name); + } + + return 0; +} +#else +static int silead_ts_set_default_fw_name(struct silead_ts_data *data, + const struct i2c_device_id *id) +{ + snprintf(data->fw_name, sizeof(data->fw_name), "%s.fw", id->name); + return 0; +} +#endif + +static int silead_ts_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct silead_ts_data *data; + struct device *dev = &client->dev; + int error; + + if (!i2c_check_functionality(client->adapter, + I2C_FUNC_I2C | + I2C_FUNC_SMBUS_READ_I2C_BLOCK | + I2C_FUNC_SMBUS_WRITE_I2C_BLOCK)) { + dev_err(dev, "I2C functionality check failed\n"); + return -ENXIO; + } + + data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + i2c_set_clientdata(client, data); + data->client = client; + + error = silead_ts_set_default_fw_name(data, id); + if (error) + return error; + + silead_ts_read_props(client); + + /* We must have the IRQ provided by DT or ACPI subsytem */ + if (client->irq <= 0) + return -ENODEV; + + /* Power GPIO pin */ + data->gpio_power = gpiod_get_optional(dev, "power", GPIOD_OUT_LOW); + if (IS_ERR(data->gpio_power)) { + if (PTR_ERR(data->gpio_power) != -EPROBE_DEFER) + dev_err(dev, "Shutdown GPIO request failed\n"); + return PTR_ERR(data->gpio_power); + } + + error = silead_ts_setup(client); + if (error) + return error; + + error = silead_ts_request_input_dev(data); + if (error) + return error; + + error = devm_request_threaded_irq(dev, client->irq, + NULL, silead_ts_threaded_irq_handler, + IRQF_ONESHOT, client->name, data); + if (error) { + if (error != -EPROBE_DEFER) + dev_err(dev, "IRQ request failed %d\n", error); + return error; + } + + return 0; +} + +static int __maybe_unused silead_ts_suspend(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + + silead_ts_set_power(client, SILEAD_POWER_OFF); + return 0; +} + +static int __maybe_unused silead_ts_resume(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + int error, status; + + silead_ts_set_power(client, SILEAD_POWER_ON); + + error = silead_ts_reset(client); + if (error) + return error; + + error = silead_ts_startup(client); + if (error) + return error; + + status = silead_ts_get_status(client); + if (status != SILEAD_STATUS_OK) { + dev_err(dev, "Resume error, status: 0x%02x\n", status); + return -ENODEV; + } + + return 0; +} + +static SIMPLE_DEV_PM_OPS(silead_ts_pm, silead_ts_suspend, silead_ts_resume); + +static const struct i2c_device_id silead_ts_id[] = { + { "gsl1680", 0 }, + { "gsl1688", 0 }, + { "gsl3670", 0 }, + { "gsl3675", 0 }, + { "gsl3692", 0 }, + { "mssl1680", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, silead_ts_id); + +#ifdef CONFIG_ACPI +static const struct acpi_device_id silead_ts_acpi_match[] = { + { "GSL1680", 0 }, + { "GSL1688", 0 }, + { "GSL3670", 0 }, + { "GSL3675", 0 }, + { "GSL3692", 0 }, + { "MSSL1680", 0 }, + { } +}; +MODULE_DEVICE_TABLE(acpi, silead_ts_acpi_match); +#endif + +static struct i2c_driver silead_ts_driver = { + .probe = silead_ts_probe, + .id_table = silead_ts_id, + .driver = { + .name = SILEAD_TS_NAME, + .acpi_match_table = ACPI_PTR(silead_ts_acpi_match), + .pm = &silead_ts_pm, + }, +}; +module_i2c_driver(silead_ts_driver); + +MODULE_AUTHOR("Robert Dolca <robert.dolca@intel.com>"); +MODULE_DESCRIPTION("Silead I2C touchscreen driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/input/touchscreen/sis_i2c.c b/drivers/input/touchscreen/sis_i2c.c new file mode 100644 index 000000000000..8d93f8c9a403 --- /dev/null +++ b/drivers/input/touchscreen/sis_i2c.c @@ -0,0 +1,413 @@ +/* + * Touch Screen driver for SiS 9200 family I2C Touch panels + * + * Copyright (C) 2015 SiS, Inc. + * Copyright (C) 2016 Nextfour Group + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * 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. + */ + +#include <linux/crc-itu-t.h> +#include <linux/delay.h> +#include <linux/i2c.h> +#include <linux/input.h> +#include <linux/input/mt.h> +#include <linux/interrupt.h> +#include <linux/gpio/consumer.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <asm/unaligned.h> + +#define SIS_I2C_NAME "sis_i2c_ts" + +/* + * The I2C packet format: + * le16 byte count + * u8 Report ID + * <contact data - variable length> + * u8 Number of contacts + * le16 Scan Time (optional) + * le16 CRC + * + * One touch point information consists of 6+ bytes, the order is: + * u8 contact state + * u8 finger id + * le16 x axis + * le16 y axis + * u8 contact width (optional) + * u8 contact height (optional) + * u8 pressure (optional) + * + * Maximum amount of data transmitted in one shot is 64 bytes, if controller + * needs to report more contacts than fit in one packet it will send true + * number of contacts in first packet and 0 as number of contacts in second + * packet. + */ + +#define SIS_MAX_PACKET_SIZE 64 + +#define SIS_PKT_LEN_OFFSET 0 +#define SIS_PKT_REPORT_OFFSET 2 /* Report ID/type */ +#define SIS_PKT_CONTACT_OFFSET 3 /* First contact */ + +#define SIS_SCAN_TIME_LEN 2 + +/* Supported report types */ +#define SIS_ALL_IN_ONE_PACKAGE 0x10 +#define SIS_PKT_IS_TOUCH(x) (((x) & 0x0f) == 0x01) +#define SIS_PKT_IS_HIDI2C(x) (((x) & 0x0f) == 0x06) + +/* Contact properties within report */ +#define SIS_PKT_HAS_AREA(x) ((x) & BIT(4)) +#define SIS_PKT_HAS_PRESSURE(x) ((x) & BIT(5)) +#define SIS_PKT_HAS_SCANTIME(x) ((x) & BIT(6)) + +/* Contact size */ +#define SIS_BASE_LEN_PER_CONTACT 6 +#define SIS_AREA_LEN_PER_CONTACT 2 +#define SIS_PRESSURE_LEN_PER_CONTACT 1 + +/* Offsets within contact data */ +#define SIS_CONTACT_STATUS_OFFSET 0 +#define SIS_CONTACT_ID_OFFSET 1 /* Contact ID */ +#define SIS_CONTACT_X_OFFSET 2 +#define SIS_CONTACT_Y_OFFSET 4 +#define SIS_CONTACT_WIDTH_OFFSET 6 +#define SIS_CONTACT_HEIGHT_OFFSET 7 +#define SIS_CONTACT_PRESSURE_OFFSET(id) (SIS_PKT_HAS_AREA(id) ? 8 : 6) + +/* Individual contact state */ +#define SIS_STATUS_UP 0x0 +#define SIS_STATUS_DOWN 0x3 + +/* Touchscreen parameters */ +#define SIS_MAX_FINGERS 10 +#define SIS_MAX_X 4095 +#define SIS_MAX_Y 4095 +#define SIS_MAX_PRESSURE 255 + +/* Resolution diagonal */ +#define SIS_AREA_LENGTH_LONGER 5792 +/*((SIS_MAX_X^2) + (SIS_MAX_Y^2))^0.5*/ +#define SIS_AREA_LENGTH_SHORT 5792 +#define SIS_AREA_UNIT (5792 / 32) + +struct sis_ts_data { + struct i2c_client *client; + struct input_dev *input; + + struct gpio_desc *attn_gpio; + struct gpio_desc *reset_gpio; + + u8 packet[SIS_MAX_PACKET_SIZE]; +}; + +static int sis_read_packet(struct i2c_client *client, u8 *buf, + unsigned int *num_contacts, + unsigned int *contact_size) +{ + int count_idx; + int ret; + u16 len; + u16 crc, pkg_crc; + u8 report_id; + + ret = i2c_master_recv(client, buf, SIS_MAX_PACKET_SIZE); + if (ret <= 0) + return -EIO; + + len = get_unaligned_le16(&buf[SIS_PKT_LEN_OFFSET]); + if (len > SIS_MAX_PACKET_SIZE) { + dev_err(&client->dev, + "%s: invalid packet length (%d vs %d)\n", + __func__, len, SIS_MAX_PACKET_SIZE); + return -E2BIG; + } + + if (len < 10) + return -EINVAL; + + report_id = buf[SIS_PKT_REPORT_OFFSET]; + count_idx = len - 1; + *contact_size = SIS_BASE_LEN_PER_CONTACT; + + if (report_id != SIS_ALL_IN_ONE_PACKAGE) { + if (SIS_PKT_IS_TOUCH(report_id)) { + /* + * Calculate CRC ignoring packet length + * in the beginning and CRC transmitted + * at the end of the packet. + */ + crc = crc_itu_t(0, buf + 2, len - 2 - 2); + pkg_crc = get_unaligned_le16(&buf[len - 2]); + + if (crc != pkg_crc) { + dev_err(&client->dev, + "%s: CRC Error (%d vs %d)\n", + __func__, crc, pkg_crc); + return -EINVAL; + } + + count_idx -= 2; + + } else if (!SIS_PKT_IS_HIDI2C(report_id)) { + dev_err(&client->dev, + "%s: invalid packet ID %#02x\n", + __func__, report_id); + return -EINVAL; + } + + if (SIS_PKT_HAS_SCANTIME(report_id)) + count_idx -= SIS_SCAN_TIME_LEN; + + if (SIS_PKT_HAS_AREA(report_id)) + *contact_size += SIS_AREA_LEN_PER_CONTACT; + if (SIS_PKT_HAS_PRESSURE(report_id)) + *contact_size += SIS_PRESSURE_LEN_PER_CONTACT; + } + + *num_contacts = buf[count_idx]; + return 0; +} + +static int sis_ts_report_contact(struct sis_ts_data *ts, const u8 *data, u8 id) +{ + struct input_dev *input = ts->input; + int slot; + u8 status = data[SIS_CONTACT_STATUS_OFFSET]; + u8 pressure; + u8 height, width; + u16 x, y; + + if (status != SIS_STATUS_DOWN && status != SIS_STATUS_UP) { + dev_err(&ts->client->dev, "Unexpected touch status: %#02x\n", + data[SIS_CONTACT_STATUS_OFFSET]); + return -EINVAL; + } + + slot = input_mt_get_slot_by_key(input, data[SIS_CONTACT_ID_OFFSET]); + if (slot < 0) + return -ENOENT; + + input_mt_slot(input, slot); + input_mt_report_slot_state(input, MT_TOOL_FINGER, + status == SIS_STATUS_DOWN); + + if (status == SIS_STATUS_DOWN) { + pressure = height = width = 1; + if (id != SIS_ALL_IN_ONE_PACKAGE) { + if (SIS_PKT_HAS_AREA(id)) { + width = data[SIS_CONTACT_WIDTH_OFFSET]; + height = data[SIS_CONTACT_HEIGHT_OFFSET]; + } + + if (SIS_PKT_HAS_PRESSURE(id)) + pressure = + data[SIS_CONTACT_PRESSURE_OFFSET(id)]; + } + + x = get_unaligned_le16(&data[SIS_CONTACT_X_OFFSET]); + y = get_unaligned_le16(&data[SIS_CONTACT_Y_OFFSET]); + + input_report_abs(input, ABS_MT_TOUCH_MAJOR, + width * SIS_AREA_UNIT); + input_report_abs(input, ABS_MT_TOUCH_MINOR, + height * SIS_AREA_UNIT); + input_report_abs(input, ABS_MT_PRESSURE, pressure); + input_report_abs(input, ABS_MT_POSITION_X, x); + input_report_abs(input, ABS_MT_POSITION_Y, y); + } + + return 0; +} + +static void sis_ts_handle_packet(struct sis_ts_data *ts) +{ + const u8 *contact; + unsigned int num_to_report = 0; + unsigned int num_contacts; + unsigned int num_reported; + unsigned int contact_size; + int error; + u8 report_id; + + do { + error = sis_read_packet(ts->client, ts->packet, + &num_contacts, &contact_size); + if (error) + break; + + if (num_to_report == 0) { + num_to_report = num_contacts; + } else if (num_contacts != 0) { + dev_err(&ts->client->dev, + "%s: nonzero (%d) point count in tail packet\n", + __func__, num_contacts); + break; + } + + report_id = ts->packet[SIS_PKT_REPORT_OFFSET]; + contact = &ts->packet[SIS_PKT_CONTACT_OFFSET]; + num_reported = 0; + + while (num_to_report > 0) { + error = sis_ts_report_contact(ts, contact, report_id); + if (error) + break; + + contact += contact_size; + num_to_report--; + num_reported++; + + if (report_id != SIS_ALL_IN_ONE_PACKAGE && + num_reported >= 5) { + /* + * The remainder of contacts is sent + * in the 2nd packet. + */ + break; + } + } + } while (num_to_report > 0); + + input_mt_sync_frame(ts->input); + input_sync(ts->input); +} + +static irqreturn_t sis_ts_irq_handler(int irq, void *dev_id) +{ + struct sis_ts_data *ts = dev_id; + + do { + sis_ts_handle_packet(ts); + } while (ts->attn_gpio && gpiod_get_value_cansleep(ts->attn_gpio)); + + return IRQ_HANDLED; +} + +static void sis_ts_reset(struct sis_ts_data *ts) +{ + if (ts->reset_gpio) { + /* Get out of reset */ + usleep_range(1000, 2000); + gpiod_set_value(ts->reset_gpio, 1); + usleep_range(1000, 2000); + gpiod_set_value(ts->reset_gpio, 0); + msleep(100); + } +} + +static int sis_ts_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct sis_ts_data *ts; + struct input_dev *input; + int error; + + ts = devm_kzalloc(&client->dev, sizeof(*ts), GFP_KERNEL); + if (!ts) + return -ENOMEM; + + ts->client = client; + i2c_set_clientdata(client, ts); + + ts->attn_gpio = devm_gpiod_get_optional(&client->dev, + "attn", GPIOD_IN); + if (IS_ERR(ts->attn_gpio)) { + error = PTR_ERR(ts->attn_gpio); + if (error != -EPROBE_DEFER) + dev_err(&client->dev, + "Failed to get attention GPIO: %d\n", error); + return error; + } + + ts->reset_gpio = devm_gpiod_get_optional(&client->dev, + "reset", GPIOD_OUT_LOW); + if (IS_ERR(ts->reset_gpio)) { + error = PTR_ERR(ts->reset_gpio); + if (error != -EPROBE_DEFER) + dev_err(&client->dev, + "Failed to get reset GPIO: %d\n", error); + return error; + } + + sis_ts_reset(ts); + + ts->input = input = devm_input_allocate_device(&client->dev); + if (!input) { + dev_err(&client->dev, "Failed to allocate input device\n"); + return -ENOMEM; + } + + input->name = "SiS Touchscreen"; + input->id.bustype = BUS_I2C; + + input_set_abs_params(input, ABS_MT_POSITION_X, 0, SIS_MAX_X, 0, 0); + input_set_abs_params(input, ABS_MT_POSITION_Y, 0, SIS_MAX_Y, 0, 0); + input_set_abs_params(input, ABS_MT_PRESSURE, 0, SIS_MAX_PRESSURE, 0, 0); + input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, + 0, SIS_AREA_LENGTH_LONGER, 0, 0); + input_set_abs_params(input, ABS_MT_TOUCH_MINOR, + 0, SIS_AREA_LENGTH_SHORT, 0, 0); + + error = input_mt_init_slots(input, SIS_MAX_FINGERS, INPUT_MT_DIRECT); + if (error) { + dev_err(&client->dev, + "Failed to initialize MT slots: %d\n", error); + return error; + } + + error = devm_request_threaded_irq(&client->dev, client->irq, + NULL, sis_ts_irq_handler, + IRQF_ONESHOT, + client->name, ts); + if (error) { + dev_err(&client->dev, "Failed to request IRQ: %d\n", error); + return error; + } + + error = input_register_device(ts->input); + if (error) { + dev_err(&client->dev, + "Failed to register input device: %d\n", error); + return error; + } + + return 0; +} + +#ifdef CONFIG_OF +static const struct of_device_id sis_ts_dt_ids[] = { + { .compatible = "sis,9200-ts" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, sis_ts_dt_ids); +#endif + +static const struct i2c_device_id sis_ts_id[] = { + { SIS_I2C_NAME, 0 }, + { "9200-ts", 0 }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(i2c, sis_ts_id); + +static struct i2c_driver sis_ts_driver = { + .driver = { + .name = SIS_I2C_NAME, + .of_match_table = of_match_ptr(sis_ts_dt_ids), + }, + .probe = sis_ts_probe, + .id_table = sis_ts_id, +}; +module_i2c_driver(sis_ts_driver); + +MODULE_DESCRIPTION("SiS 9200 Family Touchscreen Driver"); +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Mika Penttilä <mika.penttila@nextfour.com>"); diff --git a/include/linux/i8042.h b/include/linux/i8042.h index 0f9bafa17a02..d98780ca9604 100644 --- a/include/linux/i8042.h +++ b/include/linux/i8042.h @@ -62,7 +62,6 @@ struct serio; void i8042_lock_chip(void); void i8042_unlock_chip(void); int i8042_command(unsigned char *param, int command); -bool i8042_check_port_owner(const struct serio *); int i8042_install_filter(bool (*filter)(unsigned char data, unsigned char str, struct serio *serio)); int i8042_remove_filter(bool (*filter)(unsigned char data, unsigned char str, @@ -83,11 +82,6 @@ static inline int i8042_command(unsigned char *param, int command) return -ENODEV; } -static inline bool i8042_check_port_owner(const struct serio *serio) -{ - return false; -} - static inline int i8042_install_filter(bool (*filter)(unsigned char data, unsigned char str, struct serio *serio)) { diff --git a/include/linux/serio.h b/include/linux/serio.h index df4ab5de1586..c733cff44e18 100644 --- a/include/linux/serio.h +++ b/include/linux/serio.h @@ -31,7 +31,8 @@ struct serio { struct serio_device_id id; - spinlock_t lock; /* protects critical sections from port's interrupt handler */ + /* Protects critical sections from port's interrupt handler */ + spinlock_t lock; int (*write)(struct serio *, unsigned char); int (*open)(struct serio *); @@ -40,16 +41,29 @@ struct serio { void (*stop)(struct serio *); struct serio *parent; - struct list_head child_node; /* Entry in parent->children list */ + /* Entry in parent->children list */ + struct list_head child_node; struct list_head children; - unsigned int depth; /* level of nesting in serio hierarchy */ + /* Level of nesting in serio hierarchy */ + unsigned int depth; - struct serio_driver *drv; /* accessed from interrupt, must be protected by serio->lock and serio->sem */ - struct mutex drv_mutex; /* protects serio->drv so attributes can pin driver */ + /* + * serio->drv is accessed from interrupt handlers; when modifying + * caller should acquire serio->drv_mutex and serio->lock. + */ + struct serio_driver *drv; + /* Protects serio->drv so attributes can pin current driver */ + struct mutex drv_mutex; struct device dev; struct list_head node; + + /* + * For use by PS/2 layer when several ports share hardware and + * may get indigestion when exposed to concurrent access (i8042). + */ + struct mutex *ps2_cmd_mutex; }; #define to_serio_port(d) container_of(d, struct serio, dev) |