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
This commit is contained in:
Linus Torvalds
commit
39fada5527
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@ -20,6 +20,8 @@ Optional properties:
|
|||
2: Half-period mode
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4: Quarter-period mode
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- wakeup-source: Boolean, rotary encoder can wake up the system.
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- rotary-encoder,encoding: String, the method used to encode steps.
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Supported are "gray" (the default and more common) and "binary".
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Deprecated properties:
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- rotary-encoder,half-period: Makes the driver work on half-period mode.
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@ -34,6 +36,7 @@ Example:
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compatible = "rotary-encoder";
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gpios = <&gpio 19 1>, <&gpio 20 0>; /* GPIO19 is inverted */
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linux,axis = <0>; /* REL_X */
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rotary-encoder,encoding = "gray";
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rotary-encoder,relative-axis;
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};
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@ -42,5 +45,6 @@ Example:
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gpios = <&gpio 21 0>, <&gpio 22 0>;
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linux,axis = <1>; /* ABS_Y */
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rotary-encoder,steps = <24>;
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rotary-encoder,encoding = "binary";
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rotary-encoder,rollover;
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};
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|
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@ -0,0 +1,36 @@
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* GSL 1680 touchscreen controller
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Required properties:
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- compatible : "silead,gsl1680"
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- reg : I2C slave address of the chip (0x40)
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- interrupt-parent : a phandle pointing to the interrupt controller
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serving the interrupt for this chip
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- interrupts : interrupt specification for the gsl1680 interrupt
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- power-gpios : Specification for the pin connected to the gsl1680's
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shutdown input. This needs to be driven high to take the
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gsl1680 out of its low power state
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- touchscreen-size-x : See touchscreen.txt
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- touchscreen-size-y : See touchscreen.txt
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Optional properties:
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- touchscreen-inverted-x : See touchscreen.txt
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- touchscreen-inverted-y : See touchscreen.txt
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- touchscreen-swapped-x-y : See touchscreen.txt
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- silead,max-fingers : maximum number of fingers the touchscreen can detect
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Example:
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i2c@00000000 {
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gsl1680: touchscreen@40 {
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compatible = "silead,gsl1680";
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reg = <0x40>;
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interrupt-parent = <&pio>;
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interrupts = <6 11 IRQ_TYPE_EDGE_FALLING>;
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power-gpios = <&pio 1 3 GPIO_ACTIVE_HIGH>;
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touchscreen-size-x = <480>;
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touchscreen-size-y = <800>;
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touchscreen-inverted-x;
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touchscreen-swapped-x-y;
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silead,max-fingers = <5>;
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};
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};
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@ -0,0 +1,33 @@
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* SiS I2C Multiple Touch Controller
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Required properties:
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- compatible: must be "sis,9200-ts"
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- reg: i2c slave address
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- interrupt-parent: the phandle for the interrupt controller
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(see interrupt binding [0])
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- interrupts: touch controller interrupt (see interrupt
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binding [0])
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Optional properties:
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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
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device (see pinctrl binding [1]).
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- attn-gpios: the gpio pin used as attention line
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- reset-gpios: the gpio pin used to reset the controller
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- wakeup-source: touchscreen can be used as a wakeup source
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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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sis9255@5c {
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compatible = "sis,9200-ts";
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reg = <0x5c>;
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_sis>;
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interrupt-parent = <&gpio3>;
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interrupts = <19 IRQ_TYPE_EDGE_FALLING>;
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irq-gpios = <&gpio3 19 GPIO_ACTIVE_LOW>;
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reset-gpios = <&gpio2 30 GPIO_ACTIVE_LOW>;
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};
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@ -238,6 +238,7 @@ simtek
|
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sii Seiko Instruments, Inc.
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silergy Silergy Corp.
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sirf SiRF Technology, Inc.
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sis Silicon Integrated Systems Corp.
|
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sitronix Sitronix Technology Corporation
|
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skyworks Skyworks Solutions, Inc.
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smsc Standard Microsystems Corporation
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|
|
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|
|
@ -115,6 +115,10 @@ static bool sticks_to_null;
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module_param(sticks_to_null, bool, S_IRUGO);
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MODULE_PARM_DESC(sticks_to_null, "Do not map sticks at all for unknown pads");
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static bool auto_poweroff = true;
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module_param(auto_poweroff, bool, S_IWUSR | S_IRUGO);
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MODULE_PARM_DESC(auto_poweroff, "Power off wireless controllers on suspend");
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static const struct xpad_device {
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u16 idVendor;
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u16 idProduct;
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|
@ -1248,6 +1252,36 @@ static void xpad_stop_input(struct usb_xpad *xpad)
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usb_kill_urb(xpad->irq_in);
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}
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static void xpad360w_poweroff_controller(struct usb_xpad *xpad)
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{
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unsigned long flags;
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struct xpad_output_packet *packet =
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&xpad->out_packets[XPAD_OUT_CMD_IDX];
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spin_lock_irqsave(&xpad->odata_lock, flags);
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packet->data[0] = 0x00;
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packet->data[1] = 0x00;
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packet->data[2] = 0x08;
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packet->data[3] = 0xC0;
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packet->data[4] = 0x00;
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packet->data[5] = 0x00;
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packet->data[6] = 0x00;
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packet->data[7] = 0x00;
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packet->data[8] = 0x00;
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packet->data[9] = 0x00;
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packet->data[10] = 0x00;
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packet->data[11] = 0x00;
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packet->len = 12;
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packet->pending = true;
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/* Reset the sequence so we send out poweroff now */
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xpad->last_out_packet = -1;
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xpad_try_sending_next_out_packet(xpad);
|
||||
|
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spin_unlock_irqrestore(&xpad->odata_lock, flags);
|
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}
|
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|
||||
static int xpad360w_start_input(struct usb_xpad *xpad)
|
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{
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int error;
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|
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@ -1590,6 +1624,15 @@ static int xpad_suspend(struct usb_interface *intf, pm_message_t message)
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* or goes away.
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*/
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xpad360w_stop_input(xpad);
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|
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/*
|
||||
* The wireless adapter is going off now, so the
|
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* gamepads are going to become disconnected.
|
||||
* Unless explicitly disabled, power them down
|
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* so they don't just sit there flashing.
|
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*/
|
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if (auto_poweroff && xpad->pad_present)
|
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xpad360w_poweroff_controller(xpad);
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} else {
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mutex_lock(&input->mutex);
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if (input->users)
|
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|
|
|
|||
|
|
@ -186,7 +186,7 @@ static irqreturn_t cros_ec_keyb_irq(int irq, void *data)
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if (ret >= 0)
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cros_ec_keyb_process(ckdev, kb_state, ret);
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||||
else
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dev_err(ec->dev, "failed to get keyboard state: %d\n", ret);
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dev_err(ckdev->dev, "failed to get keyboard state: %d\n", ret);
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|
||||
return IRQ_HANDLED;
|
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}
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|
|
@ -236,7 +236,7 @@ static void cros_ec_keyb_compute_valid_keys(struct cros_ec_keyb *ckdev)
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|||
static int cros_ec_keyb_probe(struct platform_device *pdev)
|
||||
{
|
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struct cros_ec_device *ec = dev_get_drvdata(pdev->dev.parent);
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||||
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)
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return -ENODEV;
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||||
|
||||
ckdev = devm_kzalloc(&pdev->dev, sizeof(*ckdev), GFP_KERNEL);
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ckdev = devm_kzalloc(dev, sizeof(*ckdev), GFP_KERNEL);
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if (!ckdev)
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return -ENOMEM;
|
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err = matrix_keypad_parse_of_params(&pdev->dev, &ckdev->rows,
|
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&ckdev->cols);
|
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err = matrix_keypad_parse_of_params(dev, &ckdev->rows, &ckdev->cols);
|
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if (err)
|
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return err;
|
||||
|
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ckdev->valid_keys = devm_kzalloc(&pdev->dev, ckdev->cols, GFP_KERNEL);
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ckdev->valid_keys = devm_kzalloc(dev, ckdev->cols, GFP_KERNEL);
|
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if (!ckdev->valid_keys)
|
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return -ENOMEM;
|
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|
||||
ckdev->old_kb_state = devm_kzalloc(&pdev->dev, ckdev->cols, GFP_KERNEL);
|
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ckdev->old_kb_state = devm_kzalloc(dev, ckdev->cols, GFP_KERNEL);
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if (!ckdev->old_kb_state)
|
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return -ENOMEM;
|
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|
||||
idev = devm_input_allocate_device(&pdev->dev);
|
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idev = devm_input_allocate_device(dev);
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if (!idev)
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return -ENOMEM;
|
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|
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|
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@ -273,7 +272,7 @@ static int cros_ec_keyb_probe(struct platform_device *pdev)
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|
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ckdev->ec = ec;
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ckdev->dev = dev;
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dev_set_drvdata(&pdev->dev, ckdev);
|
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dev_set_drvdata(dev, ckdev);
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|
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idev->name = CROS_EC_DEV_NAME;
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idev->phys = ec->phys_name;
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|
|
@ -282,7 +281,7 @@ static int cros_ec_keyb_probe(struct platform_device *pdev)
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idev->id.bustype = BUS_VIRTUAL;
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idev->id.version = 1;
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idev->id.product = 0;
|
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idev->dev.parent = &pdev->dev;
|
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idev->dev.parent = dev;
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idev->open = cros_ec_keyb_open;
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idev->close = cros_ec_keyb_close;
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|
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|
|
|
|||
|
|
@ -28,6 +28,11 @@
|
|||
|
||||
#define DRV_NAME "rotary-encoder"
|
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|
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enum rotary_encoder_encoding {
|
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ROTENC_GRAY,
|
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ROTENC_BINARY,
|
||||
};
|
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|
||||
struct rotary_encoder {
|
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struct input_dev *input;
|
||||
|
||||
|
|
@ -37,6 +42,7 @@ struct rotary_encoder {
|
|||
u32 axis;
|
||||
bool relative_axis;
|
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bool rollover;
|
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enum rotary_encoder_encoding encoding;
|
||||
|
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unsigned int pos;
|
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|
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|
|
@ -57,8 +63,9 @@ static unsigned int rotary_encoder_get_state(struct rotary_encoder *encoder)
|
|||
|
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for (i = 0; i < encoder->gpios->ndescs; ++i) {
|
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int val = gpiod_get_value_cansleep(encoder->gpios->desc[i]);
|
||||
|
||||
/* convert from gray encoding to normal */
|
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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");
|
||||
|
|
|
|||
|
|
@ -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;
|
||||
|
|
|
|||
|
|
@ -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);
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
|
|||
|
|
@ -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);
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -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)
|
||||
|
|
|
|||
|
|
@ -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);
|
||||
|
||||
|
|
|
|||
|
|
@ -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
|
||||
|
|
|
|||
|
|
@ -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
|
||||
|
|
|
|||
|
|
@ -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,
|
||||
|
|
|
|||
|
|
@ -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");
|
||||
|
|
@ -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>");
|
||||
|
|
@ -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))
|
||||
{
|
||||
|
|
|
|||
|
|
@ -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)
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue