Documents the externally visible functions shared between the HDMI drivers for the RK3288 and RK3399.

Signed-off-by: Philipp Tomsich philipp.tomsich@theobroma-systems.com ---

drivers/video/rockchip/rk_hdmi.h | 44 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+)

diff --git a/drivers/video/rockchip/rk_hdmi.h b/drivers/video/rockchip/rk_hdmi.h index 501ed3a..9e165ae 100644 --- a/drivers/video/rockchip/rk_hdmi.h +++ b/drivers/video/rockchip/rk_hdmi.h @@ -23,10 +23,54 @@ struct rk_hdmi_priv { void *grf; };

+/** + * rk_hdmi_read_edid() - read the attached HDMI/DVI monitor's EDID + * + * N.B.: The buffer should be large enough to hold 2 EDID blocks, as + * this function calls dw_hdmi_read_edid, which ignores buf_size + * argument and assumes that there's always enough space for 2 + * EDID blocks. + * + * @dev: device + * @buf: output buffer for the EDID + * @buf_size: number of bytes in the buffer + * @return number of bytes read if OK, -ve if something went wrong + */ int rk_hdmi_read_edid(struct udevice *dev, u8 *buf, int buf_size); + +/** + * rk_hdmi_probe_regulators() - probe (autoset + enable) regulators + * + * Probes a list of regulators by performaing autoset and enable + * operations on them. The list of regulators is an array of string + * pointers and any indivudal regulator-probe may fail without + * counting as an error. + * + * @dev: device + * @names: array of string-pointers to regulator names to probe + * @cnt: number of elements in the 'names' array + */ void rk_hdmi_probe_regulators(struct udevice *dev, const char * const *names, int cnt); +/** + * rk_hdmi_ofdata_to_platdata() - common ofdata_to_platdata implementation + * + * @dev: device + * @return 0 if OK, -ve if something went wrong + */ int rk_hdmi_ofdata_to_platdata(struct udevice *dev); + +/** + * rk_hdmi_probe() - common probe implementation + * + * Performs the following, common initialisation steps: + * 1. checks for HPD (i.e. a HDMI monitor being attached) + * 2. initialises the Designware HDMI core + * 3. initialises the Designware HDMI PHY + * + * @dev: device + * @return 0 if OK, -ve if something went wrong + */ int rk_hdmi_probe(struct udevice *dev);

#endif