1 // SPDX-License-Identifier: GPL-2.0-or-later
17 #include <linux/fsl-diu-fb.h>
36 		out_be32(&reset_module_base->rpr, 0x52535445);  in mpc512x_restart()
38 		out_be32(&reset_module_base->rcr, 0x2);  in mpc512x_restart()
47 	u8		gamma[0x300];	/* 32-bit aligned! */
48 	struct diu_ad	ad0;		/* 32-bit aligned! */
54 /* receives a pixel clock spec in pico seconds, adjusts the DIU clock rate */
63 	np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121-diu");  in mpc512x_set_pixel_clock()
71 		clk_diu = clk_get_sys(np->name, "ipg");  in mpc512x_set_pixel_clock()
85 	 * determine the acceptable clock range for the monitor (+/- 5%),  in mpc512x_set_pixel_clock()
88 	pr_debug("DIU pixclock in ps - %u\n", pixclock);  in mpc512x_set_pixel_clock()
90 	pr_debug("DIU pixclock freq  - %u\n", pixclock);  in mpc512x_set_pixel_clock()
92 	pr_debug("DIU deviation      - %lu\n", epsilon);  in mpc512x_set_pixel_clock()
93 	minpixclock = pixclock - epsilon;  in mpc512x_set_pixel_clock()
95 	pr_debug("DIU minpixclock    - %lu\n", minpixclock);  in mpc512x_set_pixel_clock()
96 	pr_debug("DIU maxpixclock    - %lu\n", maxpixclock);  in mpc512x_set_pixel_clock()
101 	 * - simply request the desired clock and see what the  in mpc512x_set_pixel_clock()
104 	 * - try other candidate frequencies in the order of decreasing  in mpc512x_set_pixel_clock()
108 	 *   first match is found -- any potential subsequent match  in mpc512x_set_pixel_clock()
113 	 * arbitrary choice -- it's simple to calculate, in the typical  in mpc512x_set_pixel_clock()
123 		want = pixclock - offset;  in mpc512x_set_pixel_clock()
124 		pr_debug("DIU checking clock - %lu\n", want);  in mpc512x_set_pixel_clock()
127 		delta = abs(pixclock - got);  in mpc512x_set_pixel_clock()
133 		pr_debug("DIU checking clock - %lu\n", want);  in mpc512x_set_pixel_clock()
136 		delta = abs(pixclock - got);  in mpc512x_set_pixel_clock()
141 		pr_debug("DIU clock accepted - %lu\n", want);  in mpc512x_set_pixel_clock()
157 	delta = abs(pixclock - got);  in mpc512x_set_pixel_clock()
196  * Check if DIU was pre-initialized. If so, perform steps
212 	np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121-diu");  in mpc512x_init_diu()
225 	mode = in_be32(&diu_reg->diu_mode);  in mpc512x_init_diu()
231 	desc = in_be32(&diu_reg->desc[0]);  in mpc512x_init_diu()
240 	flush_dcache_range(dst, dst + sizeof(struct diu_ad) - 1);  in mpc512x_init_diu()
242 	res = in_be32(&diu_reg->disp_size);  in mpc512x_init_diu()
250 	desc = in_be32(&diu_reg->gamma);  in mpc512x_init_diu()
260 	flush_dcache_range(dst, dst + sizeof(diu_shared_fb.gamma) - 1);  in mpc512x_init_diu()
263 	out_be32(&diu_reg->gamma, virt_to_phys(&diu_shared_fb.gamma));  in mpc512x_init_diu()
264 	out_be32(&diu_reg->desc[1], 0);  in mpc512x_init_diu()
265 	out_be32(&diu_reg->desc[2], 0);  in mpc512x_init_diu()
266 	out_be32(&diu_reg->desc[0], virt_to_phys(&diu_shared_fb.ad0));  in mpc512x_init_diu()
304 	np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121-ipic");  in mpc512x_init_IRQ()
322 	{ .compatible = "fsl,mpc5121-immr", },
323 	{ .compatible = "fsl,mpc5121-localbus", },
324 	{ .compatible = "fsl,mpc5121-mbx", },
325 	{ .compatible = "fsl,mpc5121-nfc", },
326 	{ .compatible = "fsl,mpc5121-sram", },
327 	{ .compatible = "fsl,mpc5121-pci", },
328 	{ .compatible = "gpio-leds", },
344 		return "fsl,mpc5121-psc";  in mpc512x_select_psc_compat()
347 		return "fsl,mpc5125-psc";  in mpc512x_select_psc_compat()
355 		return "fsl,mpc5121-reset";  in mpc512x_select_reset_compat()
358 		return "fsl,mpc5125-reset";  in mpc512x_select_reset_compat()
398 		tx_fifo_size = get_fifo_size(np, "fsl,tx-fifo-size");  in mpc512x_psc_fifo_init()
399 		rx_fifo_size = get_fifo_size(np, "fsl,rx-fifo-size");  in mpc512x_psc_fifo_init()
429 		out_be32(&FIFOC(psc)->txsz, (fifobase << 16) | tx_fifo_size);  in mpc512x_psc_fifo_init()
431 		out_be32(&FIFOC(psc)->rxsz, (fifobase << 16) | rx_fifo_size);  in mpc512x_psc_fifo_init()
435 		out_be32(&FIFOC(psc)->txcmd, 0x80);  in mpc512x_psc_fifo_init()
436 		out_be32(&FIFOC(psc)->txcmd, 0x01);  in mpc512x_psc_fifo_init()
437 		out_be32(&FIFOC(psc)->rxcmd, 0x80);  in mpc512x_psc_fifo_init()
438 		out_be32(&FIFOC(psc)->rxcmd, 0x01);  in mpc512x_psc_fifo_init()
479  * mpc512x_cs_config - Setup chip select configuration
493 		return -EINVAL;  in mpc512x_cs_config()
496 		np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121-lpc");  in mpc512x_cs_config()
500 			return -ENOMEM;  in mpc512x_cs_config()
503 	out_be32(&lpc->cs_cfg[cs], val);  in mpc512x_cs_config()