diff options
Diffstat (limited to '0001-HID-rmi-introduce-RMI-driver-for-Synaptics-touchpads.patch')
| -rw-r--r-- | 0001-HID-rmi-introduce-RMI-driver-for-Synaptics-touchpads.patch | 1001 |
1 files changed, 0 insertions, 1001 deletions
diff --git a/0001-HID-rmi-introduce-RMI-driver-for-Synaptics-touchpads.patch b/0001-HID-rmi-introduce-RMI-driver-for-Synaptics-touchpads.patch deleted file mode 100644 index 632174608..000000000 --- a/0001-HID-rmi-introduce-RMI-driver-for-Synaptics-touchpads.patch +++ /dev/null @@ -1,1001 +0,0 @@ -Bugzilla: 1048314 -Upstream-status: Queued for 3.16 - -From 39141443c8ea2900af627d688a255e064e2b6e19 Mon Sep 17 00:00:00 2001 -From: Benjamin Tissoires <benjamin.tissoires@redhat.com> -Date: Wed, 9 Apr 2014 11:09:21 -0400 -Subject: [PATCH] HID: rmi: introduce RMI driver for Synaptics touchpads - -This driver add support for RMI4 over USB or I2C. -The current state is that it uses its own RMI4 implementation, but once -RMI4 is merged upstream, the driver will be a transport driver for the -RMI4 library. - -Part of this driver should be considered as temporary. Most of the RMI4 -processing and input handling will be deleted at some point. - -I based my work on Andrew's regarding its port of RMI4 over HID (see -https://github.com/mightybigcar/synaptics-rmi4/tree/rmihid ) -This repo presents how the driver may looks like at the end: -https://github.com/mightybigcar/synaptics-rmi4/blob/rmihid/drivers/input/rmi4/rmi_hid.c - -Without this temporary solution, the workaround we gave to users -is to disable i2c-hid, which leads to disabling the touchscreen on the -XPS 11 and 12 (Haswell generation). - -Related bugs: -https://bugzilla.redhat.com/show_bug.cgi?id=1048314 -https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1218973 - -Signed-off-by: Andrew Duggan <aduggan@synaptics.com> -Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> -Signed-off-by: Jiri Kosina <jkosina@suse.cz> - -- Removed obviously wrong hid_hw_stop() at the end of probe - -Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> ---- - drivers/hid/Kconfig | 8 + - drivers/hid/Makefile | 1 + - drivers/hid/hid-core.c | 2 + - drivers/hid/hid-rmi.c | 890 +++++++++++++++++++++++++++++++++++++++++++++++++ - include/linux/hid.h | 2 + - 6 files changed, 946 insertions(+) - create mode 100644 drivers/hid/hid-rmi.c - -diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig -index 34e2d39..b2d733b 100644 ---- a/drivers/hid/Kconfig -+++ b/drivers/hid/Kconfig -@@ -645,6 +645,14 @@ config HID_SUNPLUS - ---help--- - Support for Sunplus wireless desktop. - -+config HID_RMI -+ tristate "Synaptics RMI4 device support" -+ depends on HID -+ ---help--- -+ Support for Synaptics RMI4 touchpads. -+ Say Y here if you have a Synaptics RMI4 touchpads over i2c-hid or usbhid -+ and want support for its special functionalities. -+ - config HID_GREENASIA - tristate "GreenAsia (Product ID 0x12) game controller support" - depends on HID -diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile -index 30e4431..b326f79 100644 ---- a/drivers/hid/Makefile -+++ b/drivers/hid/Makefile -@@ -96,6 +96,7 @@ obj-$(CONFIG_HID_ROCCAT) += hid-roccat.o hid-roccat-common.o \ - hid-roccat-arvo.o hid-roccat-isku.o hid-roccat-kone.o \ - hid-roccat-koneplus.o hid-roccat-konepure.o hid-roccat-kovaplus.o \ - hid-roccat-lua.o hid-roccat-pyra.o hid-roccat-ryos.o hid-roccat-savu.o -+obj-$(CONFIG_HID_RMI) += hid-rmi.o - obj-$(CONFIG_HID_SAITEK) += hid-saitek.o - obj-$(CONFIG_HID_SAMSUNG) += hid-samsung.o - obj-$(CONFIG_HID_SMARTJOYPLUS) += hid-sjoy.o -diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c -index 253fe23..543dd1f 100644 ---- a/drivers/hid/hid-core.c -+++ b/drivers/hid/hid-core.c -@@ -1836,6 +1836,8 @@ static const struct hid_device_id hid_have_special_driver[] = { - { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGP_MOUSE) }, - { HID_USB_DEVICE(USB_VENDOR_ID_STEELSERIES, USB_DEVICE_ID_STEELSERIES_SRWS1) }, - { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) }, -+ { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, HID_ANY_ID) }, -+ { HID_I2C_DEVICE(USB_VENDOR_ID_SYNAPTICS, HID_ANY_ID) }, - { HID_USB_DEVICE(USB_VENDOR_ID_THINGM, USB_DEVICE_ID_BLINK1) }, - { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) }, - { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) }, -diff --git a/drivers/hid/hid-rmi.c b/drivers/hid/hid-rmi.c -new file mode 100644 -index 0000000..a4f04d4 ---- /dev/null -+++ b/drivers/hid/hid-rmi.c -@@ -0,0 +1,890 @@ -+/* -+ * Copyright (c) 2013 Andrew Duggan <aduggan@synaptics.com> -+ * Copyright (c) 2013 Synaptics Incorporated -+ * Copyright (c) 2014 Benjamin Tissoires <benjamin.tissoires@gmail.com> -+ * Copyright (c) 2014 Red Hat, Inc -+ * -+ * 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. -+ */ -+ -+#include <linux/kernel.h> -+#include <linux/hid.h> -+#include <linux/input.h> -+#include <linux/input/mt.h> -+#include <linux/module.h> -+#include <linux/pm.h> -+#include <linux/slab.h> -+#include <linux/wait.h> -+#include <linux/sched.h> -+#include "hid-ids.h" -+ -+/* removed backported compat.h include */ -+ -+#define RMI_MOUSE_REPORT_ID 0x01 /* Mouse emulation Report */ -+#define RMI_WRITE_REPORT_ID 0x09 /* Output Report */ -+#define RMI_READ_ADDR_REPORT_ID 0x0a /* Output Report */ -+#define RMI_READ_DATA_REPORT_ID 0x0b /* Input Report */ -+#define RMI_ATTN_REPORT_ID 0x0c /* Input Report */ -+#define RMI_SET_RMI_MODE_REPORT_ID 0x0f /* Feature Report */ -+ -+/* flags */ -+#define RMI_READ_REQUEST_PENDING BIT(0) -+#define RMI_READ_DATA_PENDING BIT(1) -+#define RMI_STARTED BIT(2) -+ -+enum rmi_mode_type { -+ RMI_MODE_OFF = 0, -+ RMI_MODE_ATTN_REPORTS = 1, -+ RMI_MODE_NO_PACKED_ATTN_REPORTS = 2, -+}; -+ -+struct rmi_function { -+ unsigned page; /* page of the function */ -+ u16 query_base_addr; /* base address for queries */ -+ u16 command_base_addr; /* base address for commands */ -+ u16 control_base_addr; /* base address for controls */ -+ u16 data_base_addr; /* base address for datas */ -+ unsigned int interrupt_base; /* cross-function interrupt number -+ * (uniq in the device)*/ -+ unsigned int interrupt_count; /* number of interrupts */ -+ unsigned int report_size; /* size of a report */ -+ unsigned long irq_mask; /* mask of the interrupts -+ * (to be applied against ATTN IRQ) */ -+}; -+ -+/** -+ * struct rmi_data - stores information for hid communication -+ * -+ * @page_mutex: Locks current page to avoid changing pages in unexpected ways. -+ * @page: Keeps track of the current virtual page -+ * -+ * @wait: Used for waiting for read data -+ * -+ * @writeReport: output buffer when writing RMI registers -+ * @readReport: input buffer when reading RMI registers -+ * -+ * @input_report_size: size of an input report (advertised by HID) -+ * @output_report_size: size of an output report (advertised by HID) -+ * -+ * @flags: flags for the current device (started, reading, etc...) -+ * -+ * @f11: placeholder of internal RMI function F11 description -+ * @f30: placeholder of internal RMI function F30 description -+ * -+ * @max_fingers: maximum finger count reported by the device -+ * @max_x: maximum x value reported by the device -+ * @max_y: maximum y value reported by the device -+ * -+ * @gpio_led_count: count of GPIOs + LEDs reported by F30 -+ * @button_count: actual physical buttons count -+ * @button_mask: button mask used to decode GPIO ATTN reports -+ * @button_state_mask: pull state of the buttons -+ * -+ * @input: pointer to the kernel input device -+ * -+ * @reset_work: worker which will be called in case of a mouse report -+ * @hdev: pointer to the struct hid_device -+ */ -+struct rmi_data { -+ struct mutex page_mutex; -+ int page; -+ -+ wait_queue_head_t wait; -+ -+ u8 *writeReport; -+ u8 *readReport; -+ -+ int input_report_size; -+ int output_report_size; -+ -+ unsigned long flags; -+ -+ struct rmi_function f11; -+ struct rmi_function f30; -+ -+ unsigned int max_fingers; -+ unsigned int max_x; -+ unsigned int max_y; -+ unsigned int x_size_mm; -+ unsigned int y_size_mm; -+ -+ unsigned int gpio_led_count; -+ unsigned int button_count; -+ unsigned long button_mask; -+ unsigned long button_state_mask; -+ -+ struct input_dev *input; -+ -+ struct work_struct reset_work; -+ struct hid_device *hdev; -+}; -+ -+#define RMI_PAGE(addr) (((addr) >> 8) & 0xff) -+ -+static int rmi_write_report(struct hid_device *hdev, u8 *report, int len); -+ -+/** -+ * rmi_set_page - Set RMI page -+ * @hdev: The pointer to the hid_device struct -+ * @page: The new page address. -+ * -+ * RMI devices have 16-bit addressing, but some of the physical -+ * implementations (like SMBus) only have 8-bit addressing. So RMI implements -+ * a page address at 0xff of every page so we can reliable page addresses -+ * every 256 registers. -+ * -+ * The page_mutex lock must be held when this function is entered. -+ * -+ * Returns zero on success, non-zero on failure. -+ */ -+static int rmi_set_page(struct hid_device *hdev, u8 page) -+{ -+ struct rmi_data *data = hid_get_drvdata(hdev); -+ int retval; -+ -+ data->writeReport[0] = RMI_WRITE_REPORT_ID; -+ data->writeReport[1] = 1; -+ data->writeReport[2] = 0xFF; -+ data->writeReport[4] = page; -+ -+ retval = rmi_write_report(hdev, data->writeReport, -+ data->output_report_size); -+ if (retval != data->output_report_size) { -+ dev_err(&hdev->dev, -+ "%s: set page failed: %d.", __func__, retval); -+ return retval; -+ } -+ -+ data->page = page; -+ return 0; -+} -+ -+static int rmi_set_mode(struct hid_device *hdev, u8 mode) -+{ -+ int ret; -+ u8 txbuf[2] = {RMI_SET_RMI_MODE_REPORT_ID, mode}; -+ -+ ret = hid_hw_raw_request(hdev, RMI_SET_RMI_MODE_REPORT_ID, txbuf, -+ sizeof(txbuf), HID_FEATURE_REPORT, HID_REQ_SET_REPORT); -+ if (ret < 0) { -+ dev_err(&hdev->dev, "unable to set rmi mode to %d (%d)\n", mode, -+ ret); -+ return ret; -+ } -+ -+ return 0; -+} -+ -+static int rmi_write_report(struct hid_device *hdev, u8 *report, int len) -+{ -+ int ret; -+ -+ ret = hid_hw_output_report(hdev, (void *)report, len); -+ if (ret < 0) { -+ dev_err(&hdev->dev, "failed to write hid report (%d)\n", ret); -+ return ret; -+ } -+ -+ return ret; -+} -+ -+static int rmi_read_block(struct hid_device *hdev, u16 addr, void *buf, -+ const int len) -+{ -+ struct rmi_data *data = hid_get_drvdata(hdev); -+ int ret; -+ int bytes_read; -+ int bytes_needed; -+ int retries; -+ int read_input_count; -+ -+ mutex_lock(&data->page_mutex); -+ -+ if (RMI_PAGE(addr) != data->page) { -+ ret = rmi_set_page(hdev, RMI_PAGE(addr)); -+ if (ret < 0) -+ goto exit; -+ } -+ -+ for (retries = 5; retries > 0; retries--) { -+ data->writeReport[0] = RMI_READ_ADDR_REPORT_ID; -+ data->writeReport[1] = 0; /* old 1 byte read count */ -+ data->writeReport[2] = addr & 0xFF; -+ data->writeReport[3] = (addr >> 8) & 0xFF; -+ data->writeReport[4] = len & 0xFF; -+ data->writeReport[5] = (len >> 8) & 0xFF; -+ -+ set_bit(RMI_READ_REQUEST_PENDING, &data->flags); -+ -+ ret = rmi_write_report(hdev, data->writeReport, -+ data->output_report_size); -+ if (ret != data->output_report_size) { -+ clear_bit(RMI_READ_REQUEST_PENDING, &data->flags); -+ dev_err(&hdev->dev, -+ "failed to write request output report (%d)\n", -+ ret); -+ goto exit; -+ } -+ -+ bytes_read = 0; -+ bytes_needed = len; -+ while (bytes_read < len) { -+ if (!wait_event_timeout(data->wait, -+ test_bit(RMI_READ_DATA_PENDING, &data->flags), -+ msecs_to_jiffies(1000))) { -+ hid_warn(hdev, "%s: timeout elapsed\n", -+ __func__); -+ ret = -EAGAIN; -+ break; -+ } -+ -+ read_input_count = data->readReport[1]; -+ memcpy(buf + bytes_read, &data->readReport[2], -+ read_input_count < bytes_needed ? -+ read_input_count : bytes_needed); -+ -+ bytes_read += read_input_count; -+ bytes_needed -= read_input_count; -+ clear_bit(RMI_READ_DATA_PENDING, &data->flags); -+ } -+ -+ if (ret >= 0) { -+ ret = 0; -+ break; -+ } -+ } -+ -+exit: -+ clear_bit(RMI_READ_REQUEST_PENDING, &data->flags); -+ mutex_unlock(&data->page_mutex); -+ return ret; -+} -+ -+static inline int rmi_read(struct hid_device *hdev, u16 addr, void *buf) -+{ -+ return rmi_read_block(hdev, addr, buf, 1); -+} -+ -+static void rmi_f11_process_touch(struct rmi_data *hdata, int slot, -+ u8 finger_state, u8 *touch_data) -+{ -+ int x, y, wx, wy; -+ int wide, major, minor; -+ int z; -+ -+ input_mt_slot(hdata->input, slot); -+ input_mt_report_slot_state(hdata->input, MT_TOOL_FINGER, -+ finger_state == 0x01); -+ if (finger_state == 0x01) { -+ x = (touch_data[0] << 4) | (touch_data[2] & 0x07); -+ y = (touch_data[1] << 4) | (touch_data[2] >> 4); -+ wx = touch_data[3] & 0x07; -+ wy = touch_data[3] >> 4; -+ wide = (wx > wy); -+ major = max(wx, wy); -+ minor = min(wx, wy); -+ z = touch_data[4]; -+ -+ /* y is inverted */ -+ y = hdata->max_y - y; -+ -+ input_event(hdata->input, EV_ABS, ABS_MT_POSITION_X, x); -+ input_event(hdata->input, EV_ABS, ABS_MT_POSITION_Y, y); -+ input_event(hdata->input, EV_ABS, ABS_MT_ORIENTATION, wide); -+ input_event(hdata->input, EV_ABS, ABS_MT_PRESSURE, z); -+ input_event(hdata->input, EV_ABS, ABS_MT_TOUCH_MAJOR, major); -+ input_event(hdata->input, EV_ABS, ABS_MT_TOUCH_MINOR, minor); -+ } -+} -+ -+static void rmi_reset_work(struct work_struct *work) -+{ -+ struct rmi_data *hdata = container_of(work, struct rmi_data, -+ reset_work); -+ -+ /* switch the device to RMI if we receive a generic mouse report */ -+ rmi_set_mode(hdata->hdev, RMI_MODE_ATTN_REPORTS); -+} -+ -+static inline int rmi_schedule_reset(struct hid_device *hdev) -+{ -+ struct rmi_data *hdata = hid_get_drvdata(hdev); -+ return schedule_work(&hdata->reset_work); -+} -+ -+static int rmi_f11_input_event(struct hid_device *hdev, u8 irq, u8 *data, -+ int size) -+{ -+ struct rmi_data *hdata = hid_get_drvdata(hdev); -+ int offset; -+ int i; -+ -+ if (size < hdata->f11.report_size) -+ return 0; -+ -+ if (!(irq & hdata->f11.irq_mask)) -+ return 0; -+ -+ offset = (hdata->max_fingers >> 2) + 1; -+ for (i = 0; i < hdata->max_fingers; i++) { -+ int fs_byte_position = i >> 2; -+ int fs_bit_position = (i & 0x3) << 1; -+ int finger_state = (data[fs_byte_position] >> fs_bit_position) & -+ 0x03; -+ -+ rmi_f11_process_touch(hdata, i, finger_state, -+ &data[offset + 5 * i]); -+ } -+ input_mt_sync_frame(hdata->input); -+ input_sync(hdata->input); -+ return hdata->f11.report_size; -+} -+ -+static int rmi_f30_input_event(struct hid_device *hdev, u8 irq, u8 *data, -+ int size) -+{ -+ struct rmi_data *hdata = hid_get_drvdata(hdev); -+ int i; -+ int button = 0; -+ bool value; -+ -+ if (!(irq & hdata->f30.irq_mask)) -+ return 0; -+ -+ for (i = 0; i < hdata->gpio_led_count; i++) { -+ if (test_bit(i, &hdata->button_mask)) { -+ value = (data[i / 8] >> (i & 0x07)) & BIT(0); -+ if (test_bit(i, &hdata->button_state_mask)) -+ value = !value; -+ input_event(hdata->input, EV_KEY, BTN_LEFT + button++, -+ value); -+ } -+ } -+ return hdata->f30.report_size; -+} -+ -+static int rmi_input_event(struct hid_device *hdev, u8 *data, int size) -+{ -+ struct rmi_data *hdata = hid_get_drvdata(hdev); -+ unsigned long irq_mask = 0; -+ unsigned index = 2; -+ -+ if (!(test_bit(RMI_STARTED, &hdata->flags))) -+ return 0; -+ -+ irq_mask |= hdata->f11.irq_mask; -+ irq_mask |= hdata->f30.irq_mask; -+ -+ if (data[1] & ~irq_mask) -+ hid_warn(hdev, "unknown intr source:%02lx %s:%d\n", -+ data[1] & ~irq_mask, __FILE__, __LINE__); -+ -+ if (hdata->f11.interrupt_base < hdata->f30.interrupt_base) { -+ index += rmi_f11_input_event(hdev, data[1], &data[index], -+ size - index); -+ index += rmi_f30_input_event(hdev, data[1], &data[index], -+ size - index); -+ } else { -+ index += rmi_f30_input_event(hdev, data[1], &data[index], -+ size - index); -+ index += rmi_f11_input_event(hdev, data[1], &data[index], -+ size - index); -+ } -+ -+ return 1; -+} -+ -+static int rmi_read_data_event(struct hid_device *hdev, u8 *data, int size) -+{ -+ struct rmi_data *hdata = hid_get_drvdata(hdev); -+ -+ if (!test_bit(RMI_READ_REQUEST_PENDING, &hdata->flags)) { -+ hid_err(hdev, "no read request pending\n"); -+ return 0; -+ } -+ -+ memcpy(hdata->readReport, data, size < hdata->input_report_size ? -+ size : hdata->input_report_size); -+ set_bit(RMI_READ_DATA_PENDING, &hdata->flags); -+ wake_up(&hdata->wait); -+ -+ return 1; -+} -+ -+static int rmi_raw_event(struct hid_device *hdev, -+ struct hid_report *report, u8 *data, int size) -+{ -+ switch (data[0]) { -+ case RMI_READ_DATA_REPORT_ID: -+ return rmi_read_data_event(hdev, data, size); -+ case RMI_ATTN_REPORT_ID: -+ return rmi_input_event(hdev, data, size); -+ case RMI_MOUSE_REPORT_ID: -+ rmi_schedule_reset(hdev); -+ break; -+ } -+ -+ return 0; -+} -+ -+static int rmi_post_reset(struct hid_device *hdev) -+{ -+ return rmi_set_mode(hdev, RMI_MODE_ATTN_REPORTS); -+} -+ -+static int rmi_post_resume(struct hid_device *hdev) -+{ -+ return rmi_set_mode(hdev, RMI_MODE_ATTN_REPORTS); -+} -+ -+#define RMI4_MAX_PAGE 0xff -+#define RMI4_PAGE_SIZE 0x0100 -+ -+#define PDT_START_SCAN_LOCATION 0x00e9 -+#define PDT_END_SCAN_LOCATION 0x0005 -+#define RMI4_END_OF_PDT(id) ((id) == 0x00 || (id) == 0xff) -+ -+struct pdt_entry { -+ u8 query_base_addr:8; -+ u8 command_base_addr:8; -+ u8 control_base_addr:8; -+ u8 data_base_addr:8; -+ u8 interrupt_source_count:3; -+ u8 bits3and4:2; -+ u8 function_version:2; -+ u8 bit7:1; -+ u8 function_number:8; -+} __attribute__((__packed__)); -+ -+static inline unsigned long rmi_gen_mask(unsigned irq_base, unsigned irq_count) -+{ -+ return GENMASK(irq_count + irq_base - 1, irq_base); -+} -+ -+static void rmi_register_function(struct rmi_data *data, -+ struct pdt_entry *pdt_entry, int page, unsigned interrupt_count) -+{ -+ struct rmi_function *f = NULL; -+ u16 page_base = page << 8; -+ -+ switch (pdt_entry->function_number) { -+ case 0x11: -+ f = &data->f11; -+ break; -+ case 0x30: -+ f = &data->f30; -+ break; -+ } -+ -+ if (f) { -+ f->page = page; -+ f->query_base_addr = page_base | pdt_entry->query_base_addr; -+ f->command_base_addr = page_base | pdt_entry->command_base_addr; -+ f->control_base_addr = page_base | pdt_entry->control_base_addr; -+ f->data_base_addr = page_base | pdt_entry->data_base_addr; -+ f->interrupt_base = interrupt_count; -+ f->interrupt_count = pdt_entry->interrupt_source_count; -+ f->irq_mask = rmi_gen_mask(f->interrupt_base, -+ f->interrupt_count); -+ } -+} -+ -+static int rmi_scan_pdt(struct hid_device *hdev) -+{ -+ struct rmi_data *data = hid_get_drvdata(hdev); -+ struct pdt_entry entry; -+ int page; -+ bool page_has_function; -+ int i; -+ int retval; -+ int interrupt = 0; -+ u16 page_start, pdt_start , pdt_end; -+ -+ hid_info(hdev, "Scanning PDT...\n"); -+ -+ for (page = 0; (page <= RMI4_MAX_PAGE); page++) { -+ page_start = RMI4_PAGE_SIZE * page; -+ pdt_start = page_start + PDT_START_SCAN_LOCATION; -+ pdt_end = page_start + PDT_END_SCAN_LOCATION; -+ -+ page_has_function = false; -+ for (i = pdt_start; i >= pdt_end; i -= sizeof(entry)) { -+ retval = rmi_read_block(hdev, i, &entry, sizeof(entry)); -+ if (retval) { -+ hid_err(hdev, -+ "Read of PDT entry at %#06x failed.\n", -+ i); -+ goto error_exit; -+ } -+ -+ if (RMI4_END_OF_PDT(entry.function_number)) -+ break; -+ -+ page_has_function = true; -+ -+ hid_info(hdev, "Found F%02X on page %#04x\n", -+ entry.function_number, page); -+ -+ rmi_register_function(data, &entry, page, interrupt); -+ interrupt += entry.interrupt_source_count; -+ } -+ -+ if (!page_has_function) -+ break; -+ } -+ -+ hid_info(hdev, "%s: Done with PDT scan.\n", __func__); -+ retval = 0; -+ -+error_exit: -+ return retval; -+} -+ -+static int rmi_populate_f11(struct hid_device *hdev) -+{ -+ struct rmi_data *data = hid_get_drvdata(hdev); -+ u8 buf[20]; -+ int ret; -+ bool has_query12; -+ bool has_physical_props; -+ unsigned x_size, y_size; -+ -+ if (!data->f11.query_base_addr) { -+ hid_err(hdev, "No 2D sensor found, giving up.\n"); -+ return -ENODEV; -+ } -+ -+ /* query 0 contains some useful information */ -+ ret = rmi_read(hdev, data->f11.query_base_addr, buf); -+ if (ret) { -+ hid_err(hdev, "can not get query 0: %d.\n", ret); -+ return ret; -+ } -+ has_query12 = !!(buf[0] & BIT(5)); -+ -+ /* query 1 to get the max number of fingers */ -+ ret = rmi_read(hdev, data->f11.query_base_addr + 1, buf); -+ if (ret) { -+ hid_err(hdev, "can not get NumberOfFingers: %d.\n", ret); -+ return ret; -+ } -+ data->max_fingers = (buf[0] & 0x07) + 1; -+ if (data->max_fingers > 5) -+ data->max_fingers = 10; -+ -+ data->f11.report_size = data->max_fingers * 5 + -+ DIV_ROUND_UP(data->max_fingers, 4); -+ -+ if (!(buf[0] & BIT(4))) { -+ hid_err(hdev, "No absolute events, giving up.\n"); -+ return -ENODEV; -+ } -+ -+ /* -+ * query 12 to know if the physical properties are reported -+ * (query 12 is at offset 10 for HID devices) -+ */ -+ if (has_query12) { -+ ret = rmi_read(hdev, data->f11.query_base_addr + 10, buf); -+ if (ret) { -+ hid_err(hdev, "can not get query 12: %d.\n", ret); -+ return ret; -+ } -+ has_physical_props = !!(buf[0] & BIT(5)); -+ -+ if (has_physical_props) { -+ ret = rmi_read_block(hdev, -+ data->f11.query_base_addr + 11, buf, 4); -+ if (ret) { -+ hid_err(hdev, "can not read query 15-18: %d.\n", -+ ret); -+ return ret; -+ } -+ -+ x_size = buf[0] | (buf[1] << 8); -+ y_size = buf[2] | (buf[3] << 8); -+ -+ data->x_size_mm = DIV_ROUND_CLOSEST(x_size, 10); -+ data->y_size_mm = DIV_ROUND_CLOSEST(y_size, 10); -+ -+ hid_info(hdev, "%s: size in mm: %d x %d\n", -+ __func__, data->x_size_mm, data->y_size_mm); -+ } -+ } -+ -+ /* retrieve the ctrl registers */ -+ ret = rmi_read_block(hdev, data->f11.control_base_addr, buf, 20); -+ if (ret) { -+ hid_err(hdev, "can not read ctrl block of size 20: %d.\n", ret); -+ return ret; -+ } -+ -+ data->max_x = buf[6] | (buf[7] << 8); -+ data->max_y = buf[8] | (buf[9] << 8); -+ -+ return 0; -+} -+ -+static int rmi_populate_f30(struct hid_device *hdev) -+{ -+ struct rmi_data *data = hid_get_drvdata(hdev); -+ u8 buf[20]; -+ int ret; -+ bool has_gpio, has_led; -+ unsigned bytes_per_ctrl; -+ u8 ctrl2_addr; -+ int ctrl2_3_length; -+ int i; -+ -+ /* function F30 is for physical buttons */ -+ if (!data->f30.query_base_addr) { -+ hid_err(hdev, "No GPIO/LEDs found, giving up.\n"); -+ return -ENODEV; -+ } -+ -+ ret = rmi_read_block(hdev, data->f30.query_base_addr, buf, 2); -+ if (ret) { -+ hid_err(hdev, "can not get F30 query registers: %d.\n", ret); -+ return ret; -+ } -+ -+ has_gpio = !!(buf[0] & BIT(3)); -+ has_led = !!(buf[0] & BIT(2)); -+ data->gpio_led_count = buf[1] & 0x1f; -+ -+ /* retrieve ctrl 2 & 3 registers */ -+ bytes_per_ctrl = (data->gpio_led_count + 7) / 8; -+ /* Ctrl0 is present only if both has_gpio and has_led are set*/ -+ ctrl2_addr = (has_gpio && has_led) ? bytes_per_ctrl : 0; -+ /* Ctrl1 is always be present */ -+ ctrl2_addr += bytes_per_ctrl; -+ ctrl2_3_length = 2 * bytes_per_ctrl; -+ -+ data->f30.report_size = bytes_per_ctrl; -+ -+ ret = rmi_read_block(hdev, data->f30.control_base_addr + ctrl2_addr, -+ buf, ctrl2_3_length); -+ if (ret) { -+ hid_err(hdev, "can not read ctrl 2&3 block of size %d: %d.\n", -+ ctrl2_3_length, ret); -+ return ret; -+ } -+ -+ for (i = 0; i < data->gpio_led_count; i++) { -+ int byte_position = i >> 3; -+ int bit_position = i & 0x07; -+ u8 dir_byte = buf[byte_position]; -+ u8 data_byte = buf[byte_position + bytes_per_ctrl]; -+ bool dir = (dir_byte >> bit_position) & BIT(0); -+ bool dat = (data_byte >> bit_position) & BIT(0); -+ -+ if (dir == 0) { -+ /* input mode */ -+ if (dat) { -+ /* actual buttons have pull up resistor */ -+ data->button_count++; -+ set_bit(i, &data->button_mask); -+ set_bit(i, &data->button_state_mask); -+ } -+ } -+ -+ } -+ -+ return 0; -+} -+ -+static int rmi_populate(struct hid_device *hdev) -+{ -+ int ret; -+ -+ ret = rmi_scan_pdt(hdev); -+ if (ret) { -+ hid_err(hdev, "PDT scan failed with code %d.\n", ret); -+ return ret; -+ } -+ -+ ret = rmi_populate_f11(hdev); -+ if (ret) { -+ hid_err(hdev, "Error while initializing F11 (%d).\n", ret); -+ return ret; -+ } -+ -+ ret = rmi_populate_f30(hdev); -+ if (ret) -+ hid_warn(hdev, "Error while initializing F30 (%d).\n", ret); -+ -+ return 0; -+} -+ -+static void rmi_input_configured(struct hid_device *hdev, struct hid_input *hi) -+{ -+ struct rmi_data *data = hid_get_drvdata(hdev); -+ struct input_dev *input = hi->input; -+ int ret; -+ int res_x, res_y, i; -+ -+ data->input = input; -+ -+ hid_dbg(hdev, "Opening low level driver\n"); -+ ret = hid_hw_open(hdev); -+ if (ret) -+ return; -+ -+ /* Allow incoming hid reports */ -+ hid_device_io_start(hdev); -+ -+ ret = rmi_set_mode(hdev, RMI_MODE_ATTN_REPORTS); -+ if (ret < 0) { -+ dev_err(&hdev->dev, "failed to set rmi mode\n"); -+ goto exit; -+ } -+ -+ ret = rmi_set_page(hdev, 0); -+ if (ret < 0) { -+ dev_err(&hdev->dev, "failed to set page select to 0.\n"); -+ goto exit; -+ } -+ -+ ret = rmi_populate(hdev); -+ if (ret) -+ goto exit; -+ -+ __set_bit(EV_ABS, input->evbit); -+ input_set_abs_params(input, ABS_MT_POSITION_X, 1, data->max_x, 0, 0); -+ input_set_abs_params(input, ABS_MT_POSITION_Y, 1, data->max_y, 0, 0); -+ -+ if (data->x_size_mm && data->x_size_mm) { -+ res_x = (data->max_x - 1) / data->x_size_mm; -+ res_y = (data->max_y - 1) / data->x_size_mm; -+ -+ input_abs_set_res(input, ABS_MT_POSITION_X, res_x); -+ input_abs_set_res(input, ABS_MT_POSITION_Y, res_y); -+ } -+ -+ input_set_abs_params(input, ABS_MT_ORIENTATION, 0, 1, 0, 0); -+ input_set_abs_params(input, ABS_MT_PRESSURE, 0, 0xff, 0, 0); -+ input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, 0x0f, 0, 0); -+ input_set_abs_params(input, ABS_MT_TOUCH_MINOR, 0, 0x0f, 0, 0); -+ -+ input_mt_init_slots(input, data->max_fingers, INPUT_MT_POINTER); -+ -+ if (data->button_count) { -+ __set_bit(EV_KEY, input->evbit); -+ for (i = 0; i < data->button_count; i++) -+ __set_bit(BTN_LEFT + i, input->keybit); -+ -+ if (data->button_count == 1) -+ __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); -+ } -+ -+ set_bit(RMI_STARTED, &data->flags); -+ -+exit: -+ hid_device_io_stop(hdev); -+ hid_hw_close(hdev); -+} -+ -+static int rmi_input_mapping(struct hid_device *hdev, -+ struct hid_input *hi, struct hid_field *field, -+ struct hid_usage *usage, unsigned long **bit, int *max) -+{ -+ /* we want to make HID ignore the advertised HID collection */ -+ return -1; -+} -+ -+static int rmi_probe(struct hid_device *hdev, const struct hid_device_id *id) -+{ -+ struct rmi_data *data = NULL; -+ int ret; -+ size_t alloc_size; -+ -+ data = devm_kzalloc(&hdev->dev, sizeof(struct rmi_data), GFP_KERNEL); -+ if (!data) -+ return -ENOMEM; -+ -+ INIT_WORK(&data->reset_work, rmi_reset_work); -+ data->hdev = hdev; -+ -+ hid_set_drvdata(hdev, data); -+ -+ hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS; -+ -+ ret = hid_parse(hdev); -+ if (ret) { -+ hid_err(hdev, "parse failed\n"); -+ return ret; -+ } -+ -+ data->input_report_size = (hdev->report_enum[HID_INPUT_REPORT] -+ .report_id_hash[RMI_ATTN_REPORT_ID]->size >> 3) -+ + 1 /* report id */; -+ data->output_report_size = (hdev->report_enum[HID_OUTPUT_REPORT] -+ .report_id_hash[RMI_WRITE_REPORT_ID]->size >> 3) -+ + 1 /* report id */; -+ -+ alloc_size = data->output_report_size + data->input_report_size; -+ -+ data->writeReport = devm_kzalloc(&hdev->dev, alloc_size, GFP_KERNEL); -+ if (!data->writeReport) { -+ ret = -ENOMEM; -+ return ret; -+ } -+ -+ data->readReport = data->writeReport + data->output_report_size; -+ -+ init_waitqueue_head(&data->wait); -+ -+ mutex_init(&data->page_mutex); -+ -+ ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); -+ if (ret) { -+ hid_err(hdev, "hw start failed\n"); -+ return ret; -+ } -+ -+ if (!test_bit(RMI_STARTED, &data->flags)) { -+ hid_hw_stop(hdev); -+ return -EIO; -+ } -+ -+ return 0; -+} -+ -+static void rmi_remove(struct hid_device *hdev) -+{ -+ struct rmi_data *hdata = hid_get_drvdata(hdev); -+ -+ clear_bit(RMI_STARTED, &hdata->flags); -+ -+ hid_hw_stop(hdev); -+} -+ -+static const struct hid_device_id rmi_id[] = { -+ { HID_I2C_DEVICE(USB_VENDOR_ID_SYNAPTICS, HID_ANY_ID) }, -+ { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, HID_ANY_ID) }, -+ { } -+}; -+MODULE_DEVICE_TABLE(hid, rmi_id); -+ -+static struct hid_driver rmi_driver = { -+ .name = "hid-rmi", -+ .id_table = rmi_id, -+ .probe = rmi_probe, -+ .remove = rmi_remove, -+ .raw_event = rmi_raw_event, -+ .input_mapping = rmi_input_mapping, -+ .input_configured = rmi_input_configured, -+#ifdef CONFIG_PM -+ .resume = rmi_post_resume, -+ .reset_resume = rmi_post_reset, -+#endif -+}; -+ -+module_hid_driver(rmi_driver); -+ -+MODULE_AUTHOR("Andrew Duggan <aduggan@synaptics.com>"); -+MODULE_DESCRIPTION("RMI HID driver"); -+MODULE_LICENSE("GPL"); -diff --git a/include/linux/hid.h b/include/linux/hid.h -index 31b9d29..1b5f1e9 100644 ---- a/include/linux/hid.h -+++ b/include/linux/hid.h -@@ -571,6 +571,8 @@ struct hid_descriptor { - .bus = BUS_USB, .vendor = (ven), .product = (prod) - #define HID_BLUETOOTH_DEVICE(ven, prod) \ - .bus = BUS_BLUETOOTH, .vendor = (ven), .product = (prod) -+#define HID_I2C_DEVICE(ven, prod) \ -+ .bus = BUS_I2C, .vendor = (ven), .product = (prod) - - #define HID_REPORT_ID(rep) \ - .report_type = (rep) --- -1.8.3.1 - |