From 8765561fc88131bbc9a6246010c15b63595ec35e Mon Sep 17 00:00:00 2001 From: Chris Pascoe Date: Tue, 22 Apr 2008 14:45:15 -0300 Subject: [PATCH] V4L/DVB (7259): FusionHDTV DVB-T Pro tuning problem fixes It seems that on this board, the demodulator provides the pullup on the I2C bus, which means that calling i2c_gate_ctrl crashes the bus. Turn this off and the xc3028 can talk OK. Also fix some GPIO related settings that became more clear through working on this. Some changes made by Mauro Chehab to allow merging it with some other xc3028 patches. Signed-off-by: Chris Pascoe Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/cx88/cx88-cards.c | 16 ++++++++++------ drivers/media/video/cx88/cx88-dvb.c | 8 ++++++++ 2 files changed, 18 insertions(+), 6 deletions(-) diff --git a/drivers/media/video/cx88/cx88-cards.c b/drivers/media/video/cx88/cx88-cards.c index 1dc70f27f7f..1fe6b9da981 100644 --- a/drivers/media/video/cx88/cx88-cards.c +++ b/drivers/media/video/cx88/cx88-cards.c @@ -2038,11 +2038,9 @@ static int cx88_dvico_xc2028_callback(void *ptr, int command, int arg) switch (command) { case XC2028_TUNER_RESET: - cx_set(MO_GP0_IO, 0x0200); - cx_clear(MO_GP0_IO, 0x02); - mdelay(100); - cx_set(MO_GP0_IO, 0x02); - mdelay(100); + cx_write(MO_GP0_IO, 0x101000); + mdelay(5); + cx_set(MO_GP0_IO, 0x101010); break; default: return -EINVAL; @@ -2302,6 +2300,13 @@ static void cx88_card_setup(struct cx88_core *core) cx_write(MO_GP0_IO, 0x000007f8); cx_write(MO_GP1_IO, 0x00000001); break; + case CX88_BOARD_DVICO_FUSIONHDTV_DVB_T_PRO: + /* GPIO0:0 is hooked to demod reset */ + /* GPIO0:4 is hooked to xc3028 reset */ + cx_write(MO_GP0_IO, 0x00111100); + msleep(1); + cx_write(MO_GP0_IO, 0x00111111); + break; case CX88_BOARD_DVICO_FUSIONHDTV_DVB_T_DUAL: /* GPIO0:6 is hooked to FX2 reset pin */ cx_set(MO_GP0_IO, 0x00004040); @@ -2312,7 +2317,6 @@ static void cx88_card_setup(struct cx88_core *core) case CX88_BOARD_DVICO_FUSIONHDTV_DVB_T1: case CX88_BOARD_DVICO_FUSIONHDTV_DVB_T_PLUS: case CX88_BOARD_DVICO_FUSIONHDTV_DVB_T_HYBRID: - case CX88_BOARD_DVICO_FUSIONHDTV_DVB_T_PRO: /* GPIO0:0 is hooked to mt352 reset pin */ cx_set(MO_GP0_IO, 0x00000101); cx_clear(MO_GP0_IO, 0x00000001); diff --git a/drivers/media/video/cx88/cx88-dvb.c b/drivers/media/video/cx88/cx88-dvb.c index 591037d8d14..ae2a0f5f080 100644 --- a/drivers/media/video/cx88/cx88-dvb.c +++ b/drivers/media/video/cx88/cx88-dvb.c @@ -588,6 +588,14 @@ static int dvb_register(struct cx8802_dev *dev) dev->dvb.frontend = dvb_attach(mt352_attach, &dvico_fusionhdtv_mt352_xc3028, &dev->core->i2c_adap); + /* + * On this board, the demod provides the I2C bus pullup. + * We must not permit gate_ctrl to be performed, or + * the xc3028 cannot communicate on the bus. + */ + if (dev->dvb.frontend) + dev->dvb.frontend->ops.i2c_gate_ctrl = NULL; + attach_xc3028 = 1; break; case CX88_BOARD_PCHDTV_HD3000: -- 2.41.0