how to write I2c driver for display

I am writing display drivers for micro oled. board is dart4460 (omap4460) which provides dss(display subsystem). so I am writing drivers using dss.

but I dont know whether what I wrote is right

oled display use dpi interface and i2c for commands

I referred to pico dlp projector driver source which uses dpi and i2c.

here are datasheets

dart4460: http://www.variscite.com/images/DART-4460-DS_107.pdf

micro oled display: https://www.dropbox.com/s/ixpws4qzo3ttj6e/SVGA050.pdf?dl=0

I wrote I2C Slave driver source in panel source.

this is my source: www.dropbox.com/.../panel-svga050.c

but I dont know If I should implement I2C master source in Board-xxx.c

plus, I want to know What Others should I implement in Board-xxx.c ???

I just added this structs in Board-xxx.c

static struct omap_dss_device svga050_device = {
.name           = "svga050",
.driver_name        = "svga050",
.type           = OMAP_DISPLAY_TYPE_DPI,
.phy.dpi.data_lines = 24,
.channel        = OMAP_DSS_CHANNEL_LCD2,
.platform_enable    = svga050_panel_enable_picodlp,
.platform_disable   = svga050_panel_disable_picodlp,
.data           = &svga050_pdata,
};

static struct omap_dss_device *svga050_dss_devices[] = {
    &svga050_device,
};

static struct picodlp_panel_data sdp4430_picodlp_pdata = {
    .svga050_adapter_id = 2,
};

1) I want to know whether all of my code is right. Is there any source code that I should supplement ???

2) probe code in pico dlp projector driver, there is a part that get adapter id and get I2C adapter object.

when the ID is set? how can I select ID value??

3) If you know how to write display driver, I want to know how to write display init code by seeing oled display datasheet.

Thanks in advance