JDI memory-in-pixel panel

Panel driver for JDI memory-in-pixel panels on the parallel interface. More...

Data Structures
struct	pbl_panel_jdi_mip
	JDI memory-in-pixel panel. More...

Macros
#define	PBL_PANEL_JDI_MIP_DEFINE(sym, _name, _timing, _vddp, _vlcd, _vcom)
	Define a JDI memory-in-pixel panel.

Detailed Description

Panel driver for JDI memory-in-pixel panels on the parallel interface.

The panel takes its timing from the board, and has two supplies switched by GPIOs: VLCD, raised first, and VDDP. Its VCOM is inverted by a PWM output at the VCOM frequency, 50% duty cycle, while the image is on. Once powered down, the panel is kept off for 500 ms before it is powered again. The panel is powered down when it is set up.

static const struct pbl_panel_timing s_timing = {
  .clock_hz = 746268, .hactive = 200, .hback_porch = 2, .hfront_porch = 6,
  .vactive = 228, .vfront_porch = 6, .enable_start = 3, .enable_end = 99,
};
 
PBL_PANEL_JDI_MIP_DEFINE(s_panel, "panel", &s_timing, PBL_GPIO(SF32LB_GPIO1, 28, 0),
                         PBL_GPIO(SF32LB_GPIO1, 29, PBL_GPIO_ACTIVE_LOW),
                         PBL_PWM(&s_lptim2.ctrl, 0, PBL_PWM_HZ(60), 0));

---

Data Structure Documentation

pbl_panel_jdi_mip

struct pbl_panel_jdi_mip

JDI memory-in-pixel panel.

Data Fields
struct pbl_panel	panel	Panel.
struct pbl_panel_jdi_mip_state *	state	Driver runtime state.
struct pbl_pwm	vcom	VCOM inversion signal.
struct pbl_gpio	vddp	VDDP supply enable.
struct pbl_gpio	vlcd	VLCD supply enable.

Macro Definition Documentation

PBL_PANEL_JDI_MIP_DEFINE

#define PBL_PANEL_JDI_MIP_DEFINE	(		sym,
			_name,
			_timing,
			_vddp,
			_vlcd,
			_vcom
	)

Value:

  PBL_DEVICE_STATE_DEFINE(sym);                                                                  \
  static struct pbl_panel_jdi_mip_state sym##_jdi_state;                                         \
  const struct pbl_panel_jdi_mip sym = {                                                         \
    .panel = PBL_PANEL_INIT(sym, _name, pbl_panel_jdi_mip_init, &pbl_panel_jdi_mip_ops, nullptr, \
                            _timing, PBL_PANEL_BUS_FORMAT_JDI_RGB222),                           \
    .state = &sym##_jdi_state,                                                                   \
    .vddp = _vddp,                                                                               \
    .vlcd = _vlcd,                                                                               \
    .vcom = _vcom,                                                                               \
  };                                                                                             \
  PBL_DEVICE_REGISTER(sym, &sym.panel.dev)

Define a JDI memory-in-pixel panel.

Parameters

sym	Symbol of the panel.
_name	Name.
_timing	Timing, a struct pbl_panel_timing.
_vddp	VDDP supply enable, from PBL_GPIO().
_vlcd	VLCD supply enable, from PBL_GPIO().
_vcom	VCOM inversion signal, from PBL_PWM(), at the VCOM frequency.