1 // SPDX-License-Identifier: GPL-2.0+
3  * Copyright 2010-2011 Freescale Semiconductor, Inc.
37  * Note that we need to byte-swap the value before it's written to the AD
50 #define AD_COMP_1_SHIFT		4
78 	temp = in_be32(&gur->clkdvdr) & 0x2000FFFF;  in diu_set_pixel_clock()
79 	out_be32(&gur->clkdvdr, temp);			/* turn off clock */  in diu_set_pixel_clock()
80 	out_be32(&gur->clkdvdr, temp | 0x80000000 | ((pixval & 0x1F) << 16));  in diu_set_pixel_clock()
129 	 * only contain the lower 32 bits of the address, we have to determine  in platform_diu_init()
130 	 * the upper 4 bits some other way.  The proper way is to scan the LAW  in platform_diu_init()
132 	 * We know that the upper bits are 0 for 32-bit addressing, or 0xF for  in platform_diu_init()
133 	 * 36-bit addressing.  in platform_diu_init()
153 	temp = in_8(&pixis->brdcfg1);  in platform_diu_init()
155 	if (strncmp(port, "lvds", 4) == 0) {  in platform_diu_init()
156 		/* Single link LVDS */  in platform_diu_init()
159 		 * LVDS also needs backlight enabled, otherwise the display  in platform_diu_init()
163 		name = "Single-Link LVDS";  in platform_diu_init()
172 	out_8(&pixis->brdcfg1, temp);  in platform_diu_init()
179 	setbits_8(&pixis->csr, PX_CTL_ALTACC);  in platform_diu_init()
191 	clrsetbits_be32(&gur->pmuxcr, PMUXCR_ELBCDIU_MASK, PMUXCR_ELBCDIU_DIU);  in platform_diu_init()
192 	pmuxcr = in_be32(&gur->pmuxcr);  in platform_diu_init()
198  * set_mux_to_lbc - disable the DIU so that we can read/write to elbc
217 	if ((in_be32(&gur->pmuxcr) & PMUXCR_ELBCDIU_MASK) !=  in set_mux_to_lbc()
233 		out_be32(&gur->pmuxcr, (pmuxcr & ~PMUXCR_ELBCDIU_MASK) |  in set_mux_to_lbc()
235 		in_be32(&gur->pmuxcr);  in set_mux_to_lbc()
250  * set_mux_to_diu - re-enable the DIU muxing
265 	setbits_8(&pixis->csr, PX_CTL_ALTACC);  in set_mux_to_diu()
273 	out_be32(&gur->pmuxcr, pmuxcr);  in set_mux_to_diu()
274 	in_be32(&gur->pmuxcr);  in set_mux_to_diu()
278  * pixis_read - board-specific function to read from the PIXIS
288 	if ((in_be32(&gur->pmuxcr) & PMUXCR_ELBCDIU_MASK) !=  in pixis_read()
300  * pixis_write - board-specific function to write to the PIXIS
310 	if ((in_be32(&gur->pmuxcr) & PMUXCR_ELBCDIU_MASK) !=  in pixis_write()
314 		/* Do a read-back to ensure the write completed */  in pixis_write()
331 	out_8(&pixis->vctl, 0);  in pixis_bank_reset()
332 	out_8(&pixis->vctl, 1);  in pixis_bank_reset()
346 		 * To ensure the post-write is completed to eLBC, software must  in flash_write8()
364 		 * To ensure the post-write is completed to eLBC, software must  in flash_write16()
382 		 * To ensure the post-write is completed to eLBC, software must  in flash_write32()
410 		 * To ensure the post-write is completed to eLBC, software must  in flash_write64()
413 		 * read addr+4 because we just wrote to addr+4, so that's how we  in flash_write64()
418 		__raw_readb(addr + 4);  in flash_write64()