diff options
| -rw-r--r-- | arch/arm/mach-tegra/include/mach/dc.h | 2 | ||||
| -rw-r--r-- | drivers/video/tegra/dc/dsi.c | 88 | ||||
| -rw-r--r-- | drivers/video/tegra/dc/dsi.h | 1 | ||||
| -rw-r--r-- | drivers/video/tegra/dc/dsi_regs.h | 4 |
4 files changed, 95 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/include/mach/dc.h b/arch/arm/mach-tegra/include/mach/dc.h index fa141e57b735..fa409f4c2e45 100644 --- a/arch/arm/mach-tegra/include/mach/dc.h +++ b/arch/arm/mach-tegra/include/mach/dc.h @@ -536,6 +536,8 @@ struct tegra_dc_pwm_params { void tegra_dc_config_pwm(struct tegra_dc *dc, struct tegra_dc_pwm_params *cfg); +int tegra_dsi_send_panel_short_cmd(struct tegra_dc *dc, u8 *pdata, u8 data_len); + int tegra_dc_update_csc(struct tegra_dc *dc, int win_index); int tegra_dc_update_lut(struct tegra_dc *dc, int win_index, int fboveride); diff --git a/drivers/video/tegra/dc/dsi.c b/drivers/video/tegra/dc/dsi.c index 01bf1c79f736..356c6d93c54c 100644 --- a/drivers/video/tegra/dc/dsi.c +++ b/drivers/video/tegra/dc/dsi.c @@ -247,6 +247,10 @@ const u32 init_reg[] = { DSI_INIT_SEQ_DATA_1, DSI_INIT_SEQ_DATA_2, DSI_INIT_SEQ_DATA_3, + DSI_INIT_SEQ_DATA_4, + DSI_INIT_SEQ_DATA_5, + DSI_INIT_SEQ_DATA_6, + DSI_INIT_SEQ_DATA_7, DSI_DCS_CMDS, DSI_PKT_SEQ_0_LO, DSI_PKT_SEQ_1_LO, @@ -1410,6 +1414,90 @@ static int tegra_dsi_send_panel_cmd(struct tegra_dc *dc, return err; } +static u8 get_8bit_ecc(u32 header) +{ + char ecc_parity[24] = { + 0x07, 0x0b, 0x0d, 0x0e, 0x13, 0x15, 0x16, 0x19, + 0x1a, 0x1c, 0x23, 0x25, 0x26, 0x29, 0x2a, 0x2c, + 0x31, 0x32, 0x34, 0x38, 0x1f, 0x2f, 0x37, 0x3b + }; + u8 ecc_byte; + int i; + + ecc_byte = 0; + for (i = 0; i < 24; i++) + ecc_byte ^= ((header >> i) & 1) ? ecc_parity[i] : 0x00; + + return ecc_byte; +} + +/* This function is written to send DCS short write (1 parameter) only. + * This means the cmd will contain only 1 byte of index and 1 byte of value. + * The data type ID is fixed at 0x15 and the ECC is calculated based on the + * data in pdata. + * The command will be sent by hardware every frame. + * pdata should contain both the index + value for each cmd. + * data_len will be the total number of bytes in pdata. + */ +int tegra_dsi_send_panel_short_cmd(struct tegra_dc *dc, u8 *pdata, u8 data_len) +{ + u8 ecc8bits = 0, data_len_orig = 0; + u32 val = 0, pkthdr = 0; + int err = 0, count = 0; + struct tegra_dc_dsi_data *dsi = tegra_dc_get_outdata(dc); + + data_len_orig = data_len; + if (pdata != NULL) { + while (data_len) { + if (data_len >= 2) { + pkthdr = (CMD_SHORTW | + (((u16 *)pdata)[0]) << 8 | 0x00 << 24); + ecc8bits = get_8bit_ecc(pkthdr); + val = (pkthdr | (ecc8bits << 24)); + data_len -= 2; + pdata += 2; + count++; + } + switch (count) { + case 1: + tegra_dsi_writel(dsi, val, DSI_INIT_SEQ_DATA_0); + break; + case 2: + tegra_dsi_writel(dsi, val, DSI_INIT_SEQ_DATA_1); + break; + case 3: + tegra_dsi_writel(dsi, val, DSI_INIT_SEQ_DATA_2); + break; + case 4: + tegra_dsi_writel(dsi, val, DSI_INIT_SEQ_DATA_3); + break; + case 5: + tegra_dsi_writel(dsi, val, DSI_INIT_SEQ_DATA_4); + break; + case 6: + tegra_dsi_writel(dsi, val, DSI_INIT_SEQ_DATA_5); + break; + case 7: + tegra_dsi_writel(dsi, val, DSI_INIT_SEQ_DATA_6); + break; + case 8: + tegra_dsi_writel(dsi, val, DSI_INIT_SEQ_DATA_7); + break; + default: + err = 1; + break; + } + } + } + + val = DSI_INIT_SEQ_CONTROL_DSI_FRAME_INIT_BYTE_COUNT(data_len_orig * 2) + | DSI_INIT_SEQ_CONTROL_DSI_SEND_INIT_SEQUENCE(1); + tegra_dsi_writel(dsi, val, DSI_INIT_SEQ_CONTROL); + + return err; +} +EXPORT_SYMBOL(tegra_dsi_send_panel_short_cmd); + static int tegra_dsi_bta(struct tegra_dc_dsi_data *dsi) { u32 val; diff --git a/drivers/video/tegra/dc/dsi.h b/drivers/video/tegra/dc/dsi.h index 6ccf544dd842..95636c0e01eb 100644 --- a/drivers/video/tegra/dc/dsi.h +++ b/drivers/video/tegra/dc/dsi.h @@ -185,6 +185,7 @@ enum { CMD_EOT = 0x08, CMD_NULL = 0x09, + CMD_SHORTW = 0x15, CMD_BLNK = 0x19, CMD_LONGW = 0x39, diff --git a/drivers/video/tegra/dc/dsi_regs.h b/drivers/video/tegra/dc/dsi_regs.h index 9fde76768afc..203ac32bd92d 100644 --- a/drivers/video/tegra/dc/dsi_regs.h +++ b/drivers/video/tegra/dc/dsi_regs.h @@ -128,6 +128,10 @@ enum { #define DSI_INIT_SEQ_DATA_1 0x1c #define DSI_INIT_SEQ_DATA_2 0x1d #define DSI_INIT_SEQ_DATA_3 0x1e +#define DSI_INIT_SEQ_DATA_4 0x1f +#define DSI_INIT_SEQ_DATA_5 0x20 +#define DSI_INIT_SEQ_DATA_6 0x21 +#define DSI_INIT_SEQ_DATA_7 0x22 #define DSI_PKT_SEQ_0_LO 0x23 #define DSI_PKT_SEQ_0_LO_SEQ_0_FORCE_LP(x) (((x) & 0x1) << 30) |