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-rw-r--r--drivers/media/dvb/siano/smsir.c301
1 files changed, 301 insertions, 0 deletions
diff --git a/drivers/media/dvb/siano/smsir.c b/drivers/media/dvb/siano/smsir.c
new file mode 100644
index 000000000000..e3d776feeaca
--- /dev/null
+++ b/drivers/media/dvb/siano/smsir.c
@@ -0,0 +1,301 @@
+/****************************************************************
+
+ Siano Mobile Silicon, Inc.
+ MDTV receiver kernel modules.
+ Copyright (C) 2006-2009, Uri Shkolnik
+
+ 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.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+ ****************************************************************/
+
+
+#include <linux/types.h>
+#include <linux/input.h>
+
+#include "smscoreapi.h"
+#include "smsir.h"
+#include "sms-cards.h"
+
+/* In order to add new IR remote control -
+ * 1) Add it to the <enum ir_kb_type> @ smsir,h,
+ * 2) Add its map to keyboard_layout_maps below
+ * 3) Set your board (sms-cards sub-module) to use it
+ */
+
+static struct keyboard_layout_map_t keyboard_layout_maps[] = {
+ [SMS_IR_KB_DEFAULT_TV] = {
+ .ir_protocol = IR_RC5,
+ .rc5_kbd_address = KEYBOARD_ADDRESS_TV1,
+ .keyboard_layout_map = {
+ KEY_0, KEY_1, KEY_2,
+ KEY_3, KEY_4, KEY_5,
+ KEY_6, KEY_7, KEY_8,
+ KEY_9, 0, 0, KEY_POWER,
+ KEY_MUTE, 0, 0,
+ KEY_VOLUMEUP, KEY_VOLUMEDOWN,
+ KEY_BRIGHTNESSUP,
+ KEY_BRIGHTNESSDOWN, KEY_CHANNELUP,
+ KEY_CHANNELDOWN,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+ }
+ },
+ [SMS_IR_KB_HCW_SILVER] = {
+ .ir_protocol = IR_RC5,
+ .rc5_kbd_address = KEYBOARD_ADDRESS_LIGHTING1,
+ .keyboard_layout_map = {
+ KEY_0, KEY_1, KEY_2,
+ KEY_3, KEY_4, KEY_5,
+ KEY_6, KEY_7, KEY_8,
+ KEY_9, KEY_TEXT, KEY_RED,
+ KEY_RADIO, KEY_MENU,
+ KEY_SUBTITLE,
+ KEY_MUTE, KEY_VOLUMEUP,
+ KEY_VOLUMEDOWN, KEY_PREVIOUS, 0,
+ KEY_UP, KEY_DOWN, KEY_LEFT,
+ KEY_RIGHT, KEY_VIDEO, KEY_AUDIO,
+ KEY_MHP, KEY_EPG, KEY_TV,
+ 0, KEY_NEXTSONG, KEY_EXIT,
+ KEY_CHANNELUP, KEY_CHANNELDOWN,
+ KEY_CHANNEL, 0,
+ KEY_PREVIOUSSONG, KEY_ENTER,
+ KEY_SLEEP, 0, 0, KEY_BLUE,
+ 0, 0, 0, 0, KEY_GREEN, 0,
+ KEY_PAUSE, 0, KEY_REWIND,
+ 0, KEY_FASTFORWARD, KEY_PLAY,
+ KEY_STOP, KEY_RECORD,
+ KEY_YELLOW, 0, 0, KEY_SELECT,
+ KEY_ZOOM, KEY_POWER, 0, 0
+ }
+ },
+ { } /* Terminating entry */
+};
+
+u32 ir_pos;
+u32 ir_word;
+u32 ir_toggle;
+
+#define RC5_PUSH_BIT(dst, bit, pos) \
+ { dst <<= 1; dst |= bit; pos++; }
+
+
+static void sms_ir_rc5_event(struct smscore_device_t *coredev,
+ u32 toggle, u32 addr, u32 cmd)
+{
+ bool toggle_changed;
+ u16 keycode;
+
+ sms_log("IR RC5 word: address %d, command %d, toggle %d",
+ addr, cmd, toggle);
+
+ toggle_changed = ir_toggle != toggle;
+ /* keep toggle */
+ ir_toggle = toggle;
+
+ if (addr !=
+ keyboard_layout_maps[coredev->ir.ir_kb_type].rc5_kbd_address)
+ return; /* Check for valid address */
+
+ keycode =
+ keyboard_layout_maps
+ [coredev->ir.ir_kb_type].keyboard_layout_map[cmd];
+
+ if (!toggle_changed &&
+ (keycode != KEY_VOLUMEUP && keycode != KEY_VOLUMEDOWN))
+ return; /* accept only repeated volume, reject other keys */
+
+ sms_log("kernel input keycode (from ir) %d", keycode);
+ input_report_key(coredev->ir.input_dev, keycode, 1);
+ input_sync(coredev->ir.input_dev);
+
+}
+
+/* decode raw bit pattern to RC5 code */
+/* taken from ir-functions.c */
+static u32 ir_rc5_decode(unsigned int code)
+{
+/* unsigned int org_code = code;*/
+ unsigned int pair;
+ unsigned int rc5 = 0;
+ int i;
+
+ for (i = 0; i < 14; ++i) {
+ pair = code & 0x3;
+ code >>= 2;
+
+ rc5 <<= 1;
+ switch (pair) {
+ case 0:
+ case 2:
+ break;
+ case 1:
+ rc5 |= 1;
+ break;
+ case 3:
+/* dprintk(1, "ir-common: ir_rc5_decode(%x) bad code\n", org_code);*/
+ sms_log("bad code");
+ return 0;
+ }
+ }
+/*
+ dprintk(1, "ir-common: code=%x, rc5=%x, start=%x,
+ toggle=%x, address=%x, "
+ "instr=%x\n", rc5, org_code, RC5_START(rc5),
+ RC5_TOGGLE(rc5), RC5_ADDR(rc5), RC5_INSTR(rc5));
+*/
+ return rc5;
+}
+
+static void sms_rc5_parse_word(struct smscore_device_t *coredev)
+{
+ #define RC5_START(x) (((x)>>12)&3)
+ #define RC5_TOGGLE(x) (((x)>>11)&1)
+ #define RC5_ADDR(x) (((x)>>6)&0x1F)
+ #define RC5_INSTR(x) ((x)&0x3F)
+
+ int i, j;
+ u32 rc5_word = 0;
+
+ /* Reverse the IR word direction */
+ for (i = 0 ; i < 28 ; i++)
+ RC5_PUSH_BIT(rc5_word, (ir_word>>i)&1, j)
+
+ rc5_word = ir_rc5_decode(rc5_word);
+ /* sms_log("temp = 0x%x, rc5_code = 0x%x", ir_word, rc5_word); */
+
+ sms_ir_rc5_event(coredev,
+ RC5_TOGGLE(rc5_word),
+ RC5_ADDR(rc5_word),
+ RC5_INSTR(rc5_word));
+}
+
+
+static void sms_rc5_accumulate_bits(struct smscore_device_t *coredev,
+ s32 ir_sample)
+{
+ #define RC5_TIME_GRANULARITY 200
+ #define RC5_DEF_BIT_TIME 889
+ #define RC5_MAX_SAME_BIT_CONT 4
+ #define RC5_WORD_LEN 27 /* 28 bit */
+
+ u32 i, j;
+ s32 delta_time;
+ u32 time = (ir_sample > 0) ? ir_sample : (0-ir_sample);
+ u32 level = (ir_sample < 0) ? 0 : 1;
+
+ for (i = RC5_MAX_SAME_BIT_CONT; i > 0; i--) {
+ delta_time = time - (i*RC5_DEF_BIT_TIME) + RC5_TIME_GRANULARITY;
+ if (delta_time < 0)
+ continue; /* not so many consecutive bits */
+ if (delta_time > (2 * RC5_TIME_GRANULARITY)) {
+ /* timeout */
+ if (ir_pos == (RC5_WORD_LEN-1))
+ /* complete last bit */
+ RC5_PUSH_BIT(ir_word, level, ir_pos)
+
+ if (ir_pos == RC5_WORD_LEN)
+ sms_rc5_parse_word(coredev);
+ else if (ir_pos) /* timeout within a word */
+ sms_log("IR error parsing a word");
+
+ ir_pos = 0;
+ ir_word = 0;
+ /* sms_log("timeout %d", time); */
+ break;
+ }
+ /* The time is within the range of this number of bits */
+ for (j = 0 ; j < i ; j++)
+ RC5_PUSH_BIT(ir_word, level, ir_pos)
+
+ break;
+ }
+}
+
+void sms_ir_event(struct smscore_device_t *coredev, const char *buf, int len)
+{
+ #define IR_DATA_RECEIVE_MAX_LEN 520 /* 128*4 + 4 + 4 */
+ u32 i;
+ enum ir_protocol ir_protocol =
+ keyboard_layout_maps[coredev->ir.ir_kb_type]
+ .ir_protocol;
+ s32 *samples;
+ int count = len>>2;
+
+ samples = (s32 *)buf;
+/* sms_log("IR buffer received, length = %d", count);*/
+
+ for (i = 0; i < count; i++)
+ if (ir_protocol == IR_RC5)
+ sms_rc5_accumulate_bits(coredev, samples[i]);
+ /* IR_RCMM not implemented */
+}
+
+int sms_ir_init(struct smscore_device_t *coredev)
+{
+ struct input_dev *input_dev;
+
+ sms_log("Allocating input device");
+ input_dev = input_allocate_device();
+ if (!input_dev) {
+ sms_err("Not enough memory");
+ return -ENOMEM;
+ }
+
+ coredev->ir.input_dev = input_dev;
+ coredev->ir.ir_kb_type =
+ sms_get_board(smscore_get_board_id(coredev))->ir_kb_type;
+ coredev->ir.keyboard_layout_map =
+ keyboard_layout_maps[coredev->ir.ir_kb_type].
+ keyboard_layout_map;
+ sms_log("IR remote keyboard type is %d", coredev->ir.ir_kb_type);
+
+ coredev->ir.controller = 0; /* Todo: vega/nova SPI number */
+ coredev->ir.timeout = IR_DEFAULT_TIMEOUT;
+ sms_log("IR port %d, timeout %d ms",
+ coredev->ir.controller, coredev->ir.timeout);
+
+ snprintf(coredev->ir.name,
+ IR_DEV_NAME_MAX_LEN,
+ "SMS IR w/kbd type %d",
+ coredev->ir.ir_kb_type);
+ input_dev->name = coredev->ir.name;
+ input_dev->phys = coredev->ir.name;
+ input_dev->dev.parent = coredev->device;
+
+ /* Key press events only */
+ input_dev->evbit[0] = BIT_MASK(EV_KEY);
+ input_dev->keybit[BIT_WORD(BTN_0)] = BIT_MASK(BTN_0);
+
+ sms_log("Input device (IR) %s is set for key events", input_dev->name);
+
+ if (input_register_device(input_dev)) {
+ sms_err("Failed to register device");
+ input_free_device(input_dev);
+ return -EACCES;
+ }
+
+ return 0;
+}
+
+void sms_ir_exit(struct smscore_device_t *coredev)
+{
+ if (coredev->ir.input_dev)
+ input_unregister_device(coredev->ir.input_dev);
+
+ sms_log("");
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 12:51:48 +0000