mtk-lk/platform/mt6768/ddp_dither.c

/* Copyright Statement:
*
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#include <debug.h>
#include "ddp_reg.h"
#include "ddp_path.h"
#include "ddp_dither.h"
#include <platform/disp_drv_platform.h>


#define DITHER_REG(reg_base, index) ((reg_base) + 0x100 + (index) * 4)

static void disp_dither_init(disp_dither_id_t id, int width, int height,
                             unsigned int dither_bpp, void *cmdq)
{
	unsigned long reg_base = DISPSYS_DITHER_BASE;
	unsigned int enable;

	DISP_REG_MASK(cmdq, DITHER_REG(reg_base, 5)   , 0x00000000, ~0);
	DISP_REG_MASK(cmdq, DITHER_REG(reg_base, 6)   , 0x00003004, ~0);
	DISP_REG_MASK(cmdq, DITHER_REG(reg_base, 7)   , 0x00000000, ~0);
	DISP_REG_MASK(cmdq, DITHER_REG(reg_base, 8)   , 0x00000000, ~0);
	DISP_REG_MASK(cmdq, DITHER_REG(reg_base, 9)   , 0x00000000, ~0);
	DISP_REG_MASK(cmdq, DITHER_REG(reg_base, 10)  , 0x00000000, ~0);
	DISP_REG_MASK(cmdq, DITHER_REG(reg_base, 11)  , 0x00000000, ~0);
	DISP_REG_MASK(cmdq, DITHER_REG(reg_base, 12)  , 0x00000011, ~0);
	DISP_REG_MASK(cmdq, DITHER_REG(reg_base, 13)  , 0x00000000, ~0);
	DISP_REG_MASK(cmdq, DITHER_REG(reg_base, 14)  , 0x00000000, ~0);

	enable = 0x1;
	if (dither_bpp == 16) { /* 565 */
		DISP_REG_MASK(cmdq, DITHER_REG(reg_base, 15), 0x50500001, ~0);
		DISP_REG_MASK(cmdq, DITHER_REG(reg_base, 16), 0x50504040, ~0);
		DISP_REG_MASK(cmdq, DITHER_REG(reg_base, 0),  0x00000001, ~0);
	} else if (dither_bpp == 18) { /* 666 */
		DISP_REG_MASK(cmdq, DITHER_REG(reg_base, 15), 0x40400001, ~0);
		DISP_REG_MASK(cmdq, DITHER_REG(reg_base, 16), 0x40404040, ~0);
		DISP_REG_MASK(cmdq, DITHER_REG(reg_base, 0),  0x00000001, ~0);
	} else if (dither_bpp == 24) { /* 888 */
		DISP_REG_MASK(cmdq, DITHER_REG(reg_base, 15), 0x20200001, ~0);
		DISP_REG_MASK(cmdq, DITHER_REG(reg_base, 16), 0x20202020, ~0);
		DISP_REG_MASK(cmdq, DITHER_REG(reg_base, 0),  0x00000001, ~0);
	} else if (dither_bpp > 24) {
		dprintf(CRITICAL, "[DITHER] High depth LCM (bpp = %d), no dither\n", dither_bpp);
		enable = 1;
	} else {
		dprintf(CRITICAL, "[DITHER] invalid dither bpp = %d\n", dither_bpp);
		/* Bypass dither */
		DISP_REG_MASK(cmdq, DITHER_REG(reg_base, 0), 0x00000000, ~0);
		enable = 0;
	}

	DISP_REG_MASK(cmdq, DISP_REG_DITHER_EN, enable, 0x1);
	DISP_REG_MASK(cmdq, DISP_REG_DITHER_CFG, enable << 1, 1 << 1);
	DISP_REG_SET(cmdq, DISP_REG_DITHER_SIZE, (width << 16) | height);
}


static int disp_dither_config(DISP_MODULE_ENUM module, disp_ddp_path_config* pConfig, void* cmdq)
{
	dprintf(CRITICAL, "config dither dirty = %d\n", pConfig->dst_dirty);
	if (pConfig->dst_dirty) {
		disp_dither_init(DISP_DITHER0, pConfig->dst_w, pConfig->dst_h,
		                 pConfig->lcm_bpp, cmdq);
	}

	return 0;
}

static int disp_dither_start(DISP_MODULE_ENUM module, void *handle)
{
#ifdef LK_BYPASS_SHADOW_REG
	DISP_REG_SET_FIELD(handle, FLD_DITHER_BYPASS_SHADOW,
			  DISP_REG_DITHER_0, 0x1);
	DISP_REG_SET_FIELD(handle, FLD_DITHER_READ_WRK_REG,
			  DISP_REG_DITHER_0, 0x1);

#endif

	return 0;
}

static int disp_dither_bypass(DISP_MODULE_ENUM module, int bypass)
{
	int relay = 0;
	if (bypass)
		relay = 1;

	DISP_REG_MASK(NULL, DISP_REG_DITHER_CFG, relay, 0x1);
	dprintf(CRITICAL, "disp_dither_bypass(bypass = %d)", bypass);

	return 0;
}

static int disp_dither_clock_on(DISP_MODULE_ENUM module,void * handle)
{
	ddp_enable_module_clock(module);
	return 0;
}

static int disp_dither_clock_off(DISP_MODULE_ENUM module,void * handle)
{
	ddp_disable_module_clock(module);
	return 0;
}


DDP_MODULE_DRIVER ddp_driver_dither = {
	.start          = disp_dither_start,
	.config         = disp_dither_config,
	.bypass         = disp_dither_bypass,
	.init           = disp_dither_clock_on,
	.deinit         = disp_dither_clock_off,
	.power_on       = disp_dither_clock_on,
	.power_off      = disp_dither_clock_off,
};