2011/8/4 Tomi Valkeinen <tomi.valkeinen@xxxxxx>:
> Hi,
>
> On Wed, 2011-06-29 at 20:44 -0700, Arve Hjønnevåg wrote:
>> Change-Id: I18168c887e1384c07dc033a1ffc57abdacb26073
>> Signed-off-by: Arve Hjønnevåg <arve@xxxxxxxxxxx>
>> ---
>> drivers/video/omap2/dss/dsi.c | 7 ++++++-
>> 1 files changed, 6 insertions(+), 1 deletions(-)
>
> This feels somehow partial... Why do you want to read generic packets if
> there are no functions to send generic packets?
>
The chip responds with a generic packet when reading from some
registers. This is a simple fix while adding support for sending
generic packets would probably require an api change.
> And always write a patch description.
>
> Tomi
>
>>
>> diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c
>> index c16b933..6975645 100644
>> --- a/drivers/video/omap2/dss/dsi.c
>> +++ b/drivers/video/omap2/dss/dsi.c
>> @@ -206,6 +206,7 @@ struct dsi_reg { u16 idx; };
>> #define DSI_DT_DCS_LONG_WRITE 0x39
>>
>> #define DSI_DT_RX_ACK_WITH_ERR 0x02
>> +#define DSI_DT_RX_LONG_READ 0x1a
>> #define DSI_DT_RX_DCS_LONG_READ 0x1c
>> #define DSI_DT_RX_SHORT_READ_1 0x21
>> #define DSI_DT_RX_SHORT_READ_2 0x22
>> @@ -2943,6 +2944,10 @@ static u16 dsi_vc_flush_receive_data(struct platform_device *dsidev,
>> } else if (dt == DSI_DT_RX_SHORT_READ_2) {
>> DSSERR("\tDCS short response, 2 byte: %#x\n",
>> FLD_GET(val, 23, 8));
>> + } else if (dt == DSI_DT_RX_LONG_READ) {
>> + DSSERR("\tlong response, len %d\n",
>> + FLD_GET(val, 23, 8));
>> + dsi_vc_flush_long_data(dsidev, channel);
>> } else if (dt == DSI_DT_RX_DCS_LONG_READ) {
>> DSSERR("\tDCS long response, len %d\n",
>> FLD_GET(val, 23, 8));
>> @@ -3287,7 +3292,7 @@ int dsi_vc_dcs_read(struct omap_dss_device *dssdev, int channel, u8 dcs_cmd,
>> buf[1] = (data >> 8) & 0xff;
>>
>> return 2;
>> - } else if (dt == DSI_DT_RX_DCS_LONG_READ) {
>> + } else if (dt == DSI_DT_RX_DCS_LONG_READ || dt == DSI_DT_RX_LONG_READ) {
>> int w;
>> int len = FLD_GET(val, 23, 8);
>> if (dsi->debug_read)
>
>
>
--
Arve Hjønnevåg
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