From 6ed9d56086acb3bb4ec003ff6d2f54313774d72b Mon Sep 17 00:00:00 2001 From: Antti Palosaari Date: Sat, 19 Mar 2011 18:02:22 -0300 Subject: [PATCH] [media] af9013: reimplement firmware download Split FW download packages smarter way and bug free. Implementation is based of Andrea Merello's example he provided for tda18218 driver. Count remaining FW bytes down in loop instead of division and modulo combination used earlier. Thanks to: Andrea Merello Signed-off-by: Antti Palosaari Cc: Andrea Merello Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/af9013.c | 27 +++++++++++---------------- 1 file changed, 11 insertions(+), 16 deletions(-) diff --git a/drivers/media/dvb/frontends/af9013.c b/drivers/media/dvb/frontends/af9013.c index 6f50f0673994..345311c33383 100644 --- a/drivers/media/dvb/frontends/af9013.c +++ b/drivers/media/dvb/frontends/af9013.c @@ -1323,13 +1323,11 @@ static struct dvb_frontend_ops af9013_ops; static int af9013_download_firmware(struct af9013_state *state) { - int i, len, packets, remainder, ret; + int i, len, remaining, ret; const struct firmware *fw; - u16 addr = 0x5100; /* firmware start address */ u16 checksum = 0; u8 val; u8 fw_params[4]; - u8 *data; u8 *fw_file = AF9013_DEFAULT_FIRMWARE; msleep(100); @@ -1373,21 +1371,18 @@ static int af9013_download_firmware(struct af9013_state *state) if (ret) goto error_release; - #define FW_PACKET_MAX_DATA 16 - - packets = fw->size / FW_PACKET_MAX_DATA; - remainder = fw->size % FW_PACKET_MAX_DATA; - len = FW_PACKET_MAX_DATA; - for (i = 0; i <= packets; i++) { - if (i == packets) /* set size of the last packet */ - len = remainder; - - data = (u8 *)(fw->data + i * FW_PACKET_MAX_DATA); - ret = af9013_write_ofsm_regs(state, addr, data, len); - addr += FW_PACKET_MAX_DATA; + #define FW_ADDR 0x5100 /* firmware start address */ + #define LEN_MAX 16 /* max packet size */ + for (remaining = fw->size; remaining > 0; remaining -= LEN_MAX) { + len = remaining; + if (len > LEN_MAX) + len = LEN_MAX; + ret = af9013_write_ofsm_regs(state, + FW_ADDR + fw->size - remaining, + (u8 *) &fw->data[fw->size - remaining], len); if (ret) { - err("firmware download failed at %d with %d", i, ret); + err("firmware download failed:%d", ret); goto error_release; } } -- 2.39.2