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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
commitcf9610f9116d55c5a66ef9f1faecacabd93a9322 (patch)
tree757a3d280760c654767631cab5ad8af2d86d1848 /drivers/hid/hid-icade.c
downloadlinux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.tar.gz
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Merge tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlgrafted
Pull pin control updates from Linus Walleij: "Core changes: - Use the non-blocking mux_state_try_select() in the generic MUX pin control back-end - Free pin maps on pinctrl_generic_to_map() failure in the core helpers New hardware pin control: - Qualcomm Maili TLMM SoC, PMG1110 PMIC, and Eliza LPASS LPI TLMM SoC (this is for the low power audio, LPASS = Low Power Audio SubSystem portions) - Upboard support on top of the Intel pin controller - Apple T6030 and T6031 support (just compatible strings) - Samsung Exynos 8855 SoC - Mediatek MT6858 SoC - Rockchip RK3308B and RV1106 SoCs - Airoha EN7523 and AN7563 SoCs Improvements: - Qualcomm TLMM GPIOs are unconditionally marked as wakeup capable - Qualcomm improvements on top of the Qualcomm PDC (power domain controller) irqchip improvements from tglx:s tree - Qualcomm IPQ806x and IPQ9650 non-urgent pin grop fixups - The NPCM8xx driver has been put into shape fixing many pin and group definitions - Some non-urgent Tegra 264 pin assignments are fixed up - Some non-urgent fixups to Airoha AN7581 and AN7583 registers and pin assignments, missing features etc" * tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (130 commits) dt-bindings: pinctrl: Convert TI DA850 pupd to DT schema pinctrl: meson: sync some modify from A4 pinctrl: meson: a4: Add input enable pin configuration pinctrl: realtek: rtd1625: remove unused group name spdif_sel pinctrl: realtek: rtd1625: fix base_bit for VE4 GPIO 13 dt-bindings: pinctrl: microchip,pic32mzda-pinctrl: Convert to DT schema Revert "Merge branch 'ib-rsk7204' into devel" pinctrl: rockchip: Add RV1106 pinctrl support dt-bindings: pinctrl: rockchip: Add RV1106 compatible pinctrl: rockchip: Decode drive strength in the get function pinctrl: fix PINCTRL_GENERIC_MUX not always being selectable pinctrl: airoha: add support of an7563 SoC dt-bindings: pinctrl: airoha: add support of an7563 pin controller pinctrl: airoha: try to find chip scu node by phandle first pinctrl: airoha: add support of en7523 SoC dt-bindings: pinctrl: airoha: add support of en7523 pin controller pinctrl: airoha: an7583: add support for olt pinmux pinctrl: airoha: an7583: add support for pon_alt pinmux pinctrl: airoha: an7583: add support for npu_uart pinmux dt-bindings: pinctrl: airoha: an7583: add missed features ...
Diffstat (limited to 'drivers/hid/hid-icade.c')
-rw-r--r--drivers/hid/hid-icade.c239
1 files changed, 239 insertions, 0 deletions
diff --git a/drivers/hid/hid-icade.c b/drivers/hid/hid-icade.c
new file mode 100644
index 000000000..f3716cfac
--- /dev/null
+++ b/drivers/hid/hid-icade.c
@@ -0,0 +1,239 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * ION iCade input driver
+ *
+ * Copyright (c) 2012 Bastien Nocera <hadess@hadess.net>
+ * Copyright (c) 2012 Benjamin Tissoires <benjamin.tissoires@gmail.com>
+ */
+
+/*
+ */
+
+#include <linux/device.h>
+#include <linux/hid.h>
+#include <linux/module.h>
+
+#include "hid-ids.h"
+
+/*
+ * ↑ A C Y L
+ * ← →
+ * ↓ B X Z R
+ *
+ *
+ * UP ON,OFF = w,e
+ * RT ON,OFF = d,c
+ * DN ON,OFF = x,z
+ * LT ON,OFF = a,q
+ * A ON,OFF = y,t
+ * B ON,OFF = h,r
+ * C ON,OFF = u,f
+ * X ON,OFF = j,n
+ * Y ON,OFF = i,m
+ * Z ON,OFF = k,p
+ * L ON,OFF = o,g
+ * R ON,OFF = l,v
+ */
+
+/* The translation code uses HID usage instead of input layer
+ * keys. This code generates a lookup table that makes
+ * translation quick.
+ *
+ * #include <linux/input.h>
+ * #include <stdio.h>
+ * #include <assert.h>
+ *
+ * #define unk KEY_UNKNOWN
+ *
+ * < copy of hid_keyboard[] from hid-input.c >
+ *
+ * struct icade_key_translation {
+ * int from;
+ * const char *to;
+ * int press;
+ * };
+ *
+ * static const struct icade_key_translation icade_keys[] = {
+ * { KEY_W, "KEY_UP", 1 },
+ * { KEY_E, "KEY_UP", 0 },
+ * { KEY_D, "KEY_RIGHT", 1 },
+ * { KEY_C, "KEY_RIGHT", 0 },
+ * { KEY_X, "KEY_DOWN", 1 },
+ * { KEY_Z, "KEY_DOWN", 0 },
+ * { KEY_A, "KEY_LEFT", 1 },
+ * { KEY_Q, "KEY_LEFT", 0 },
+ * { KEY_Y, "BTN_A", 1 },
+ * { KEY_T, "BTN_A", 0 },
+ * { KEY_H, "BTN_B", 1 },
+ * { KEY_R, "BTN_B", 0 },
+ * { KEY_U, "BTN_C", 1 },
+ * { KEY_F, "BTN_C", 0 },
+ * { KEY_J, "BTN_X", 1 },
+ * { KEY_N, "BTN_X", 0 },
+ * { KEY_I, "BTN_Y", 1 },
+ * { KEY_M, "BTN_Y", 0 },
+ * { KEY_K, "BTN_Z", 1 },
+ * { KEY_P, "BTN_Z", 0 },
+ * { KEY_O, "BTN_THUMBL", 1 },
+ * { KEY_G, "BTN_THUMBL", 0 },
+ * { KEY_L, "BTN_THUMBR", 1 },
+ * { KEY_V, "BTN_THUMBR", 0 },
+ *
+ * { }
+ * };
+ *
+ * static int
+ * usage_for_key (int key)
+ * {
+ * int i;
+ * for (i = 0; i < 256; i++) {
+ * if (hid_keyboard[i] == key)
+ * return i;
+ * }
+ * assert(0);
+ * }
+ *
+ * int main (int argc, char **argv)
+ * {
+ * const struct icade_key_translation *trans;
+ * int max_usage = 0;
+ *
+ * for (trans = icade_keys; trans->from; trans++) {
+ * int usage = usage_for_key (trans->from);
+ * max_usage = usage > max_usage ? usage : max_usage;
+ * }
+ *
+ * printf ("#define ICADE_MAX_USAGE %d\n\n", max_usage);
+ * printf ("struct icade_key {\n");
+ * printf ("\tu16 to;\n");
+ * printf ("\tu8 press:1;\n");
+ * printf ("};\n\n");
+ * printf ("static const struct icade_key "
+ * "icade_usage_table[%d] = {\n", max_usage + 1);
+ * for (trans = icade_keys; trans->from; trans++) {
+ * printf ("\t[%d] = { %s, %d },\n",
+ * usage_for_key (trans->from), trans->to, trans->press);
+ * }
+ * printf ("};\n");
+ *
+ * return 0;
+ * }
+ */
+
+#define ICADE_MAX_USAGE 29
+
+struct icade_key {
+ u16 to;
+ u8 press:1;
+};
+
+static const struct icade_key icade_usage_table[30] = {
+ [26] = { KEY_UP, 1 },
+ [8] = { KEY_UP, 0 },
+ [7] = { KEY_RIGHT, 1 },
+ [6] = { KEY_RIGHT, 0 },
+ [27] = { KEY_DOWN, 1 },
+ [29] = { KEY_DOWN, 0 },
+ [4] = { KEY_LEFT, 1 },
+ [20] = { KEY_LEFT, 0 },
+ [28] = { BTN_A, 1 },
+ [23] = { BTN_A, 0 },
+ [11] = { BTN_B, 1 },
+ [21] = { BTN_B, 0 },
+ [24] = { BTN_C, 1 },
+ [9] = { BTN_C, 0 },
+ [13] = { BTN_X, 1 },
+ [17] = { BTN_X, 0 },
+ [12] = { BTN_Y, 1 },
+ [16] = { BTN_Y, 0 },
+ [14] = { BTN_Z, 1 },
+ [19] = { BTN_Z, 0 },
+ [18] = { BTN_THUMBL, 1 },
+ [10] = { BTN_THUMBL, 0 },
+ [15] = { BTN_THUMBR, 1 },
+ [25] = { BTN_THUMBR, 0 },
+};
+
+static const struct icade_key *icade_find_translation(u16 from)
+{
+ if (from > ICADE_MAX_USAGE)
+ return NULL;
+ return &icade_usage_table[from];
+}
+
+static int icade_event(struct hid_device *hdev, struct hid_field *field,
+ struct hid_usage *usage, __s32 value)
+{
+ const struct icade_key *trans;
+
+ if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput ||
+ !usage->type)
+ return 0;
+
+ /* We ignore the fake key up, and act only on key down */
+ if (!value)
+ return 1;
+
+ trans = icade_find_translation(usage->hid & HID_USAGE);
+
+ if (!trans)
+ return 1;
+
+ input_event(field->hidinput->input, usage->type,
+ trans->to, trans->press);
+
+ return 1;
+}
+
+static int icade_input_mapping(struct hid_device *hdev, struct hid_input *hi,
+ struct hid_field *field, struct hid_usage *usage,
+ unsigned long **bit, int *max)
+{
+ const struct icade_key *trans;
+
+ if ((usage->hid & HID_USAGE_PAGE) == HID_UP_KEYBOARD) {
+ trans = icade_find_translation(usage->hid & HID_USAGE);
+
+ if (!trans)
+ return -1;
+
+ hid_map_usage(hi, usage, bit, max, EV_KEY, trans->to);
+ set_bit(trans->to, hi->input->keybit);
+
+ return 1;
+ }
+
+ /* ignore others */
+ return -1;
+
+}
+
+static int icade_input_mapped(struct hid_device *hdev, struct hid_input *hi,
+ struct hid_field *field, struct hid_usage *usage,
+ unsigned long **bit, int *max)
+{
+ if (usage->type == EV_KEY)
+ set_bit(usage->type, hi->input->evbit);
+
+ return -1;
+}
+
+static const struct hid_device_id icade_devices[] = {
+ { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ION, USB_DEVICE_ID_ICADE) },
+
+ { }
+};
+MODULE_DEVICE_TABLE(hid, icade_devices);
+
+static struct hid_driver icade_driver = {
+ .name = "icade",
+ .id_table = icade_devices,
+ .event = icade_event,
+ .input_mapped = icade_input_mapped,
+ .input_mapping = icade_input_mapping,
+};
+module_hid_driver(icade_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Bastien Nocera <hadess@hadess.net>");
+MODULE_DESCRIPTION("ION iCade input driver");