diff options
Diffstat (limited to 'drivers/video/omap2')
| -rw-r--r-- | drivers/video/omap2/dss/dsi.c | 146 |
1 files changed, 136 insertions, 10 deletions
diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c index c26a914..20cad1b 100644 --- a/drivers/video/omap2/dss/dsi.c +++ b/drivers/video/omap2/dss/dsi.c @@ -3217,8 +3217,44 @@ static int dsi_vc_dcs_send_read_request(struct omap_dss_device *dssdev, return 0; } -static int dsi_vc_dcs_read_rx_fifo(struct platform_device *dsidev, int channel, - u8 *buf, int buflen) +static int dsi_vc_generic_send_read_request(struct omap_dss_device *dssdev, + int channel, u8 *reqdata, int reqlen) +{ + struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); + struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); + u16 data; + u8 data_type; + int r; + + if (dsi->debug_read) + DSSDBG("dsi_vc_generic_send_read_request(ch %d, reqlen %d)\n", + channel, reqlen); + + if (reqlen == 0) { + data_type = MIPI_DSI_GENERIC_READ_REQUEST_0_PARAM; + data = 0; + } else if (reqlen == 1) { + data_type = MIPI_DSI_GENERIC_READ_REQUEST_1_PARAM; + data = reqdata[0]; + } else if (reqlen == 2) { + data_type = MIPI_DSI_GENERIC_READ_REQUEST_2_PARAM; + data = reqdata[0] | (reqdata[1] << 8); + } else { + BUG(); + } + + r = dsi_vc_send_short(dsidev, channel, data_type, data, 0); + if (r) { + DSSERR("dsi_vc_generic_send_read_request(ch %d, reqlen %d)" + " failed\n", channel, reqlen); + return r; + } + + return 0; +} + +static int dsi_vc_read_rx_fifo(struct platform_device *dsidev, int channel, + u8 *buf, int buflen, enum dss_dsi_content_type type) { struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); u32 val; @@ -3242,10 +3278,14 @@ static int dsi_vc_dcs_read_rx_fifo(struct platform_device *dsidev, int channel, r = -EIO; goto err; - } else if (dt == MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_1BYTE) { + } else if (dt == (type == DSS_DSI_CONTENT_GENERIC ? + MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_1BYTE : + MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_1BYTE)) { u8 data = FLD_GET(val, 15, 8); if (dsi->debug_read) - DSSDBG("\tDCS short response, 1 byte: %02x\n", data); + DSSDBG("\t%s short response, 1 byte: %02x\n", + type == DSS_DSI_CONTENT_GENERIC ? "GENERIC" : + "DCS", data); if (buflen < 1) { r = -EIO; @@ -3255,10 +3295,14 @@ static int dsi_vc_dcs_read_rx_fifo(struct platform_device *dsidev, int channel, buf[0] = data; return 1; - } else if (dt == MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_2BYTE) { + } else if (dt == (type == DSS_DSI_CONTENT_GENERIC ? + MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_2BYTE : + MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_2BYTE)) { u16 data = FLD_GET(val, 23, 8); if (dsi->debug_read) - DSSDBG("\tDCS short response, 2 byte: %04x\n", data); + DSSDBG("\t%s short response, 2 byte: %04x\n", + type == DSS_DSI_CONTENT_GENERIC ? "GENERIC" : + "DCS", data); if (buflen < 2) { r = -EIO; @@ -3269,11 +3313,15 @@ static int dsi_vc_dcs_read_rx_fifo(struct platform_device *dsidev, int channel, buf[1] = (data >> 8) & 0xff; return 2; - } else if (dt == MIPI_DSI_RX_DCS_LONG_READ_RESPONSE) { + } else if (dt == (type == DSS_DSI_CONTENT_GENERIC ? + MIPI_DSI_RX_GENERIC_LONG_READ_RESPONSE : + MIPI_DSI_RX_DCS_LONG_READ_RESPONSE)) { int w; int len = FLD_GET(val, 23, 8); if (dsi->debug_read) - DSSDBG("\tDCS long response, len %d\n", len); + DSSDBG("\t%s long response, len %d\n", + type == DSS_DSI_CONTENT_GENERIC ? "GENERIC" : + "DCS", len); if (len > buflen) { r = -EIO; @@ -3309,7 +3357,8 @@ static int dsi_vc_dcs_read_rx_fifo(struct platform_device *dsidev, int channel, BUG(); err: - DSSERR("dsi_vc_dcs_read_rx_fifo(ch %d) failed\n", channel); + DSSERR("dsi_vc_read_rx_fifo(ch %d type %s) failed\n", channel, + type == DSS_DSI_CONTENT_GENERIC ? "GENERIC" : "DCS"); return r; } @@ -3328,7 +3377,8 @@ int dsi_vc_dcs_read(struct omap_dss_device *dssdev, int channel, u8 dcs_cmd, if (r) goto err; - r = dsi_vc_dcs_read_rx_fifo(dsidev, channel, buf, buflen); + r = dsi_vc_read_rx_fifo(dsidev, channel, buf, buflen, + DSS_DSI_CONTENT_DCS); if (r < 0) goto err; @@ -3344,6 +3394,82 @@ err: } EXPORT_SYMBOL(dsi_vc_dcs_read); +static int dsi_vc_generic_read(struct omap_dss_device *dssdev, int channel, + u8 *reqdata, int reqlen, u8 *buf, int buflen) +{ + struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); + int r; + + r = dsi_vc_generic_send_read_request(dssdev, channel, reqdata, reqlen); + if (r) + return r; + + r = dsi_vc_send_bta_sync(dssdev, channel); + if (r) + return r; + + r = dsi_vc_read_rx_fifo(dsidev, channel, buf, buflen, + DSS_DSI_CONTENT_GENERIC); + if (r < 0) + return r; + + if (r != buflen) { + r = -EIO; + return r; + } + + return 0; +} + +int dsi_vc_generic_read_0(struct omap_dss_device *dssdev, int channel, u8 *buf, + int buflen) +{ + int r; + + r = dsi_vc_generic_read(dssdev, channel, NULL, 0, buf, buflen); + if (r) { + DSSERR("dsi_vc_generic_read_0(ch %d) failed\n", channel); + return r; + } + + return 0; +} +EXPORT_SYMBOL(dsi_vc_generic_read_0); + +int dsi_vc_generic_read_1(struct omap_dss_device *dssdev, int channel, u8 param, + u8 *buf, int buflen) +{ + int r; + + r = dsi_vc_generic_read(dssdev, channel, ¶m, 1, buf, buflen); + if (r) { + DSSERR("dsi_vc_generic_read_1(ch %d) failed\n", channel); + return r; + } + + return 0; +} +EXPORT_SYMBOL(dsi_vc_generic_read_1); + +int dsi_vc_generic_read_2(struct omap_dss_device *dssdev, int channel, + u8 param1, u8 param2, u8 *buf, int buflen) +{ + int r; + u8 reqdata[2]; + + reqdata[0] = param1; + reqdata[1] = param2; + + r = dsi_vc_generic_read(dssdev, channel, reqdata, 2, buf, buflen); + if (r) { + DSSERR("dsi_vc_generic_read_2(ch %d) failed\n", channel); + return r; + } + + return 0; +} +EXPORT_SYMBOL(dsi_vc_generic_read_2); + int dsi_vc_set_max_rx_packet_size(struct omap_dss_device *dssdev, int channel, u16 len) { |