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Commit 1662070a authored by Patrick Boettcher's avatar Patrick Boettcher Committed by Mauro Carvalho Chehab
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V4L/DVB (11284): Fix i2c code of flexcop-driver for rare revisions 



This patch adds a workaround in the i2c-code of the flexcop-driver to
fix support for SkyStar2 rev 2.7. There are not many devices out
there, that's why this bug was not revealed earlier.

Signed-off-by: default avatarPatrick Boettcher <pb@linuxtv.org>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent aef82207

drivers/media/dvb/b2c2/flexcop-i2c.c

+12 −0
Original line number Diff line number Diff line
@@ -47,6 +47,18 @@ static int flexcop_i2c_read4(struct flexcop_i2c_adapter *i2c, 
	int len = r100.tw_sm_c_100.total_bytes, /* remember total_bytes is buflen-1 */

		ret;



	/* work-around to have CableStar2 and SkyStar2 rev 2.7 work

	 * correctly:

	 *

	 * the ITD1000 is behind an i2c-gate which closes automatically

	 * after an i2c-transaction the STV0297 needs 2 consecutive reads

	 * one with no_base_addr = 0 and one with 1

	 *

	 * those two work-arounds are conflictin: we check for the card

	 * type, it is set when probing the ITD1000 */

	if (i2c->fc->dev_type == FC_SKY_REV27)

		r100.tw_sm_c_100.no_base_addr_ack_error = i2c->no_base_addr;



	ret = flexcop_i2c_operation(i2c->fc, &r100);

	if (ret != 0) {

		deb_i2c("Retrying operation\n");

drivers/media/dvb/frontends/itd1000_priv.h

+1 −1
Original line number Diff line number Diff line
@@ -31,7 +31,7 @@ struct itd1000_state { 
	/* ugly workaround for flexcop's incapable i2c-controller

	 * FIXME, if possible

	 */

	u8 shadow[255];

	u8 shadow[256];

};



enum itd1000_register {