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path: root/drivers/media/i2c/ir-kbd-i2c.c
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Diffstat (limited to 'drivers/media/i2c/ir-kbd-i2c.c')
-rw-r--r--drivers/media/i2c/ir-kbd-i2c.c93
1 files changed, 64 insertions, 29 deletions
diff --git a/drivers/media/i2c/ir-kbd-i2c.c b/drivers/media/i2c/ir-kbd-i2c.c
index a14a74e6b986..5588cdd7ec20 100644
--- a/drivers/media/i2c/ir-kbd-i2c.c
+++ b/drivers/media/i2c/ir-kbd-i2c.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
*
* keyboard input driver for i2c IR remote controls
@@ -32,20 +33,9 @@
* Mark Weaver <mark@npsl.co.uk>
* Jarod Wilson <jarod@redhat.com>
* Copyright (C) 2011 Andy Walls <awalls@md.metrocast.net>
- *
- * 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 <asm/unaligned.h>
+#include <linux/unaligned.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
@@ -248,6 +238,43 @@ static int get_key_knc1(struct IR_i2c *ir, enum rc_proto *protocol,
return 1;
}
+static int get_key_geniatech(struct IR_i2c *ir, enum rc_proto *protocol,
+ u32 *scancode, u8 *toggle)
+{
+ int i, rc;
+ unsigned char b;
+
+ /* poll IR chip */
+ for (i = 0; i < 4; i++) {
+ rc = i2c_master_recv(ir->c, &b, 1);
+ if (rc == 1)
+ break;
+ msleep(20);
+ }
+ if (rc != 1) {
+ dev_dbg(&ir->rc->dev, "read error\n");
+ if (rc < 0)
+ return rc;
+ return -EIO;
+ }
+
+ /* don't repeat the key */
+ if (ir->old == b)
+ return 0;
+ ir->old = b;
+
+ /* decode to RC5 */
+ b &= 0x7f;
+ b = (b - 1) / 2;
+
+ dev_dbg(&ir->rc->dev, "key %02x\n", b);
+
+ *protocol = RC_PROTO_RC5;
+ *scancode = b;
+ *toggle = ir->old >> 7;
+ return 1;
+}
+
static int get_key_avermedia_cardbus(struct IR_i2c *ir, enum rc_proto *protocol,
u32 *scancode, u8 *toggle)
{
@@ -294,9 +321,9 @@ static int get_key_avermedia_cardbus(struct IR_i2c *ir, enum rc_proto *protocol,
static int ir_key_poll(struct IR_i2c *ir)
{
- enum rc_proto protocol;
- u32 scancode;
- u8 toggle;
+ enum rc_proto protocol = 0;
+ u32 scancode = 0;
+ u8 toggle = 0;
int rc;
dev_dbg(&ir->rc->dev, "%s\n", __func__);
@@ -688,8 +715,8 @@ static int zilog_tx(struct rc_dev *rcdev, unsigned int *txbuf,
goto out_unlock;
}
- i = i2c_master_recv(ir->tx_c, buf, 1);
- if (i != 1) {
+ ret = i2c_master_recv(ir->tx_c, buf, 1);
+ if (ret != 1) {
dev_err(&ir->rc->dev, "i2c_master_recv failed with %d\n", ret);
ret = -EIO;
goto out_unlock;
@@ -730,8 +757,9 @@ static int zilog_tx_duty_cycle(struct rc_dev *dev, u32 duty_cycle)
return 0;
}
-static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
+static int ir_probe(struct i2c_client *client)
{
+ const struct i2c_device_id *id = i2c_client_get_device_id(client);
char *ir_codes = NULL;
const char *name = NULL;
u64 rc_proto = RC_PROTO_BIT_UNKNOWN;
@@ -776,6 +804,13 @@ static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
rc_proto = RC_PROTO_BIT_OTHER;
ir_codes = RC_MAP_EMPTY;
break;
+ case 0x33:
+ name = "Geniatech";
+ ir->get_key = get_key_geniatech;
+ rc_proto = RC_PROTO_BIT_RC5;
+ ir_codes = RC_MAP_TOTAL_MEDIA_IN_HAND_02;
+ ir->old = 0xfc;
+ break;
case 0x6b:
name = "FusionHDTV";
ir->get_key = get_key_fusionhdtv;
@@ -801,6 +836,7 @@ static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
rc_proto = RC_PROTO_BIT_RC5 | RC_PROTO_BIT_RC6_MCE |
RC_PROTO_BIT_RC6_6A_32;
ir_codes = RC_MAP_HAUPPAUGE;
+ ir->polling_interval = 125;
probe_tx = true;
break;
}
@@ -834,6 +870,9 @@ static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
case IR_KBD_GET_KEY_KNC1:
ir->get_key = get_key_knc1;
break;
+ case IR_KBD_GET_KEY_GENIATECH:
+ ir->get_key = get_key_geniatech;
+ break;
case IR_KBD_GET_KEY_FUSIONHDTV:
ir->get_key = get_key_fusionhdtv;
break;
@@ -895,9 +934,11 @@ static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
INIT_DELAYED_WORK(&ir->work, ir_work);
if (probe_tx) {
- ir->tx_c = i2c_new_dummy(client->adapter, 0x70);
- if (!ir->tx_c) {
+ ir->tx_c = i2c_new_dummy_device(client->adapter, 0x70);
+ if (IS_ERR(ir->tx_c)) {
dev_err(&client->dev, "failed to setup tx i2c address");
+ err = PTR_ERR(ir->tx_c);
+ goto err_out_free;
} else if (!zilog_init(ir)) {
ir->carrier = 38000;
ir->duty_cycle = 40;
@@ -914,7 +955,7 @@ static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
return 0;
err_out_free:
- if (ir->tx_c)
+ if (!IS_ERR(ir->tx_c))
i2c_unregister_device(ir->tx_c);
/* Only frees rc if it were allocated internally */
@@ -922,21 +963,15 @@ static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
return err;
}
-static int ir_remove(struct i2c_client *client)
+static void ir_remove(struct i2c_client *client)
{
struct IR_i2c *ir = i2c_get_clientdata(client);
- /* kill outstanding polls */
cancel_delayed_work_sync(&ir->work);
- if (ir->tx_c)
- i2c_unregister_device(ir->tx_c);
+ i2c_unregister_device(ir->tx_c);
- /* unregister device */
rc_unregister_device(ir->rc);
-
- /* free memory */
- return 0;
}
static const struct i2c_device_id ir_kbd_id[] = {
generated by cgit (git 2.34.1) at 2025-12-25 20:26:59 +0000