From: Mauro Carvalho Chehab Date: Tue, 2 Aug 2005 04:11:38 +0000 (-0700) Subject: [PATCH] v4l: bug fix to correct tea5767 autodetection X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=001abc93bf83f95737cd455b6ec875e6412f7d53;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git [PATCH] v4l: bug fix to correct tea5767 autodetection This patch does correct radio chip autodetection to avoid misdetecting mt20xx microtune as tea5767 chip. Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/drivers/media/video/tea5767.c b/drivers/media/video/tea5767.c index c8fd4204cd0..cebcc1fa68d 100644 --- a/drivers/media/video/tea5767.c +++ b/drivers/media/video/tea5767.c @@ -2,7 +2,7 @@ * For Philips TEA5767 FM Chip used on some TV Cards like Prolink Pixelview * I2C address is allways 0xC0. * - * $Id: tea5767.c,v 1.26 2005/07/27 12:00:36 mkrufky Exp $ + * $Id: tea5767.c,v 1.27 2005/07/31 12:10:56 mchehab Exp $ * * Copyright (c) 2005 Mauro Carvalho Chehab (mchehab@brturbo.com.br) * This code is placed under the terms of the GNU General Public License @@ -296,7 +296,7 @@ int tea5767_autodetection(struct i2c_client *c) int rc; struct tuner *t = i2c_get_clientdata(c); - if (5 != (rc = i2c_master_recv(c, buffer, 5))) { + if (7 != (rc = i2c_master_recv(c, buffer, 7))) { tuner_warn("It is not a TEA5767. Received %i bytes.\n", rc); return EINVAL; } @@ -323,6 +323,12 @@ int tea5767_autodetection(struct i2c_client *c) return EINVAL; } + /* It seems that tea5767 returns 0xff after the 5th byte */ + if ((buffer[5] != 0xff) || (buffer[6] != 0xff)) { + tuner_warn("Returned more than 5 bytes. It is not a TEA5767\n"); + return EINVAL; + } + tuner_warn("TEA5767 detected.\n"); return 0; } @@ -331,7 +337,8 @@ int tea5767_tuner_init(struct i2c_client *c) { struct tuner *t = i2c_get_clientdata(c); - tuner_info("type set to %d (%s)\n", t->type, "Philips TEA5767HN FM Radio"); + tuner_info("type set to %d (%s)\n", t->type, + "Philips TEA5767HN FM Radio"); strlcpy(c->name, "tea5767", sizeof(c->name)); t->tv_freq = set_tv_freq;