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msm_fb: hdmi: Correct checksum value

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This change writes the checksum value to registers after
doing all the calculations so that the correct checksum
value is transmitted.

CRs-Fixed: 388272
Change-Id: Ia0543e458d5a11b148bd29e0d57ae355a051b2a9
Signed-off-by: Ajay Singh Parmar <aparmar@codeaurora.org>
Signed-off-by: Aravind Venkateswaran <aravindh@codeaurora.org>
This commit is contained in:
Ajay Singh Parmar 2012-08-27 11:07:32 +05:30 committed by Stephen Boyd
parent 244d8bbda6
commit ee960525dd
1 changed files with 13 additions and 13 deletions
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26
drivers/video/msm/hdmi_msm.c
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@ -3991,19 +3991,6 @@ static void hdmi_msm_spd_infoframe_packetsetup(void)
HDMI_OUTP(0x00A4, packet_header);
check_sum += IFRAME_CHECKSUM_32(packet_header);
/* Vendor Name (7bit ASCII code) */
/* 0x00A8 GENERIC1_0
* BYTE0 7:0 CheckSum
* BYTE1 15:8 VENDOR_NAME[0]
* BYTE2 23:16 VENDOR_NAME[1]
* BYTE3 31:24 VENDOR_NAME[2] */
packet_payload = ((vendor_name[0] & 0x7f) << 8)
| ((vendor_name[1] & 0x7f) << 16)
| ((vendor_name[2] & 0x7f) << 24);
check_sum += IFRAME_CHECKSUM_32(packet_payload);
packet_payload |= ((0x100 - (0xff & check_sum)) & 0xff);
HDMI_OUTP(0x00A8, packet_payload);
/* 0x00AC GENERIC1_1
* BYTE4 7:0 VENDOR_NAME[3]
* BYTE5 15:8 VENDOR_NAME[4]
@ -4085,6 +4072,19 @@ static void hdmi_msm_spd_infoframe_packetsetup(void)
HDMI_OUTP(0x00C0, packet_payload);
check_sum += IFRAME_CHECKSUM_32(packet_payload);
/* Vendor Name (7bit ASCII code) */
/* 0x00A8 GENERIC1_0
* BYTE0 7:0 CheckSum
* BYTE1 15:8 VENDOR_NAME[0]
* BYTE2 23:16 VENDOR_NAME[1]
* BYTE3 31:24 VENDOR_NAME[2] */
packet_payload = ((vendor_name[0] & 0x7f) << 8)
| ((vendor_name[1] & 0x7f) << 16)
| ((vendor_name[2] & 0x7f) << 24);
check_sum += IFRAME_CHECKSUM_32(packet_payload);
packet_payload |= ((0x100 - (0xff & check_sum)) & 0xff);
HDMI_OUTP(0x00A8, packet_payload);
/* GENERIC1_LINE | GENERIC1_CONT | GENERIC1_SEND
* Setup HDMI TX generic packet control
* Enable this packet to transmit every frame