From 7ccdfb127f3082034e95da778f22b0ec65d8e7fc Mon Sep 17 00:00:00 2001
From: Jonathan Lam <jlam55555@gmail.com>
Date: Thu, 6 Feb 2020 21:56:40 -0500
Subject: [PATCH] added (basic) support for VK1560 and stylus hid usage report

---
 veikk.h      |  1 +
 veikk_vdev.c | 22 ++++++++++++++++++----
 2 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/veikk.h b/veikk.h
index 9b5e145..49b5543 100644
--- a/veikk.h
+++ b/veikk.h
@@ -20,6 +20,7 @@
 #define VEIKK_DRIVER_LICENSE    "GPL"
 
 #define VEIKK_PEN_REPORT        0x0001
+#define VEIKK_STYLUS_REPORT     0x0002  // equivalent to pen report
 
 // supported module parameter types
 // TODO: currently not used; may remove in future; however, is used in the
diff --git a/veikk_vdev.c b/veikk_vdev.c
index db24c41..b188283 100644
--- a/veikk_vdev.c
+++ b/veikk_vdev.c
@@ -98,12 +98,17 @@ static int veikk_s640_handle_raw_data(struct veikk *veikk, u8 *data, int size,
 
     switch(report_id) {
     case VEIKK_PEN_REPORT:
+    case VEIKK_STYLUS_REPORT:
         // validate size
         if(size != sizeof(struct veikk_pen_report))
             return -EINVAL;
 
         // dispatch events with input_dev
         pen_report = (struct veikk_pen_report *) data;
+
+        // TODO: remove
+        printk("%u %u %u\n",pen_report->x, pen_report->y, pen_report->pressure);
+
         input_report_abs(pen_input, veikk->x_map_axis,
                          veikk->x_map_dir*pen_report->x);
         input_report_abs(pen_input, veikk->y_map_axis,
@@ -193,16 +198,25 @@ struct veikk_device_info veikk_device_info_0x0004 = {
     .handle_raw_data = veikk_s640_handle_raw_data,
     .handle_modparm_change = veikk_s640_handle_modparm_change
 };
+struct veikk_device_info veikk_device_info_0x1001 = {
+    .name = "VEIKK VK1560 Pen", .prod_id = 0x1001,
+    .x_max = 27536, .y_max = 15489, .pressure_max = 8192,
+    .setup_and_register_input_devs = veikk_s640_setup_and_register_input_devs,
+    .alloc_input_devs = veikk_s640_alloc_input_devs,
+    .handle_raw_data = veikk_s640_handle_raw_data,
+    .handle_modparm_change = veikk_s640_handle_modparm_change
+};
 /** END struct veikk_device LIST **/
 
 #define VEIKK_DEVICE(prod)\
     HID_USB_DEVICE(VEIKK_VENDOR_ID, prod),\
     .driver_data = (long unsigned int) &veikk_device_info_##prod
 const struct hid_device_id veikk_ids[] = {
-    { VEIKK_DEVICE(0x0001) },
-    { VEIKK_DEVICE(0x0002) },
-    { VEIKK_DEVICE(0x0003) },
-    { VEIKK_DEVICE(0x0004) },
+    { VEIKK_DEVICE(0x0001) },   // S640
+    { VEIKK_DEVICE(0x0002) },   // A30
+    { VEIKK_DEVICE(0x0003) },   // A50
+    { VEIKK_DEVICE(0x0004) },   // A15
+    { VEIKK_DEVICE(0x1001) },   // VK1560
     // TODO: add more devices here
     {}
 };