1 // SPDX-License-Identifier: GPL-2.0+
32 	cbd_t	rxbd;		/* Rx BD */
35 	uchar	rxbuf[CONFIG_SYS_SMC_RXBUFLEN];/* rx buffers */
41 	int divisor = (gd->cpu_clk + 8 * baudrate) / 16 / baudrate;  in serial_setdivisor()
51 		out_be32(&cp->cp_brgc1, ((divisor - 1) << 1) | CPM_BRG_EN);  in serial_setdivisor()
53 		out_be32(&cp->cp_brgc1, ((divisor / 16 - 1) << 1) | CPM_BRG_EN |  in serial_setdivisor()
65 	cpm8xx_t __iomem *cp = &(im->im_cpm);  in serial_mpc8xx_setbrg()
73 	out_be32(&cp->cp_simode, 0);  in serial_mpc8xx_setbrg()
85 	cpm8xx_t __iomem *cp = &(im->im_cpm);  in serial_mpc8xx_probe()
90 	sp = cp->cp_smc + SMC_INDEX;  in serial_mpc8xx_probe()
91 	up = (smc_uart_t __iomem *)&cp->cp_dparam[PROFF_SMC];  in serial_mpc8xx_probe()
93 	out_be16(&up->smc_rpbase, 0);  in serial_mpc8xx_probe()
96 	clrbits_be16(&sp->smc_smcmr, SMCMR_REN | SMCMR_TEN);  in serial_mpc8xx_probe()
99 	out_be32(&im->im_siu_conf.sc_sdcr, 1);  in serial_mpc8xx_probe()
102 	out_8(&im->im_sdma.sdma_sdsr, CONFIG_SYS_SDSR);  in serial_mpc8xx_probe()
105 	out_8(&im->im_sdma.sdma_sdmr, CONFIG_SYS_SDMR);  in serial_mpc8xx_probe()
108 	setbits_be32(&cp->cp_pbpar, IOPINS);  in serial_mpc8xx_probe()
109 	clrbits_be32(&cp->cp_pbdir, IOPINS);  in serial_mpc8xx_probe()
110 	clrbits_be16(&cp->cp_pbodr, IOPINS);  in serial_mpc8xx_probe()
115 	rtx = (struct serialbuffer __iomem *)&cp->cp_dpmem[CPM_SERIAL_BASE];  in serial_mpc8xx_probe()
119 	 * damm: allocating space after the two buffers for rx/tx data  in serial_mpc8xx_probe()
122 	out_be32(&rtx->rxbd.cbd_bufaddr, (__force uint)&rtx->rxbuf);  in serial_mpc8xx_probe()
123 	out_be16(&rtx->rxbd.cbd_sc, 0);  in serial_mpc8xx_probe()
125 	out_be32(&rtx->txbd.cbd_bufaddr, (__force uint)&rtx->txbuf);  in serial_mpc8xx_probe()
126 	out_be16(&rtx->txbd.cbd_sc, 0);  in serial_mpc8xx_probe()
129 	out_be16(&up->smc_rbase, CPM_SERIAL_BASE);  in serial_mpc8xx_probe()
130 	out_be16(&up->smc_tbase, CPM_SERIAL_BASE + sizeof(cbd_t));  in serial_mpc8xx_probe()
131 	out_8(&up->smc_rfcr, SMC_EB);  in serial_mpc8xx_probe()
132 	out_8(&up->smc_tfcr, SMC_EB);  in serial_mpc8xx_probe()
137 	out_be16(&sp->smc_smcmr, smcr_mk_clen(9) | SMCMR_SM_UART);  in serial_mpc8xx_probe()
141 	out_8(&sp->smc_smcm, 0);  in serial_mpc8xx_probe()
142 	out_8(&sp->smc_smce, 0xff);  in serial_mpc8xx_probe()
145 	serial_mpc8xx_setbrg(dev, gd->baudrate);  in serial_mpc8xx_probe()
148 	setbits_be16(&rtx->txbd.cbd_sc, BD_SC_WRAP);  in serial_mpc8xx_probe()
149 	setbits_be16(&rtx->rxbd.cbd_sc, BD_SC_EMPTY | BD_SC_WRAP);  in serial_mpc8xx_probe()
152 	out_be16(&up->smc_mrblr, CONFIG_SYS_SMC_RXBUFLEN);  in serial_mpc8xx_probe()
153 	out_be16(&up->smc_maxidl, CONFIG_SYS_MAXIDLE);  in serial_mpc8xx_probe()
154 	out_be32(&rtx->rxindex, 0);  in serial_mpc8xx_probe()
156 	/* Initialize Tx/Rx parameters.	*/  in serial_mpc8xx_probe()
157 	while (in_be16(&cp->cp_cpcr) & CPM_CR_FLG)	/* wait if cp is busy */  in serial_mpc8xx_probe()
160 	out_be16(&cp->cp_cpcr,  in serial_mpc8xx_probe()
163 	while (in_be16(&cp->cp_cpcr) & CPM_CR_FLG)	/* wait if cp is busy */  in serial_mpc8xx_probe()
167 	setbits_be16(&sp->smc_smcmr, SMCMR_REN | SMCMR_TEN);  in serial_mpc8xx_probe()
175 	cpm8xx_t	__iomem *cpmp = &(im->im_cpm);  in serial_mpc8xx_putc()
181 	rtx = (struct serialbuffer __iomem *)&cpmp->cp_dpmem[CPM_SERIAL_BASE];  in serial_mpc8xx_putc()
184 	out_8(&rtx->txbuf, c);  in serial_mpc8xx_putc()
185 	out_be16(&rtx->txbd.cbd_datlen, 1);  in serial_mpc8xx_putc()
186 	setbits_be16(&rtx->txbd.cbd_sc, BD_SC_READY);  in serial_mpc8xx_putc()
188 	while (in_be16(&rtx->txbd.cbd_sc) & BD_SC_READY)  in serial_mpc8xx_putc()
197 	cpm8xx_t	__iomem *cpmp = &(im->im_cpm);  in serial_mpc8xx_getc()
202 	rtx = (struct serialbuffer __iomem *)&cpmp->cp_dpmem[CPM_SERIAL_BASE];  in serial_mpc8xx_getc()
205 	while (in_be16(&rtx->rxbd.cbd_sc) & BD_SC_EMPTY)  in serial_mpc8xx_getc()
211 	rxindex = in_be32(&rtx->rxindex);  in serial_mpc8xx_getc()
212 	c = in_8(rtx->rxbuf + rxindex);  in serial_mpc8xx_getc()
216 	if (rxindex >= in_be16(&rtx->rxbd.cbd_datlen)) {  in serial_mpc8xx_getc()
218 		setbits_be16(&rtx->rxbd.cbd_sc, BD_SC_EMPTY);  in serial_mpc8xx_getc()
220 	out_be32(&rtx->rxindex, rxindex);  in serial_mpc8xx_getc()
224 static int serial_mpc8xx_pending(struct udevice *dev, bool input)  in serial_mpc8xx_pending()  argument
227 	cpm8xx_t	__iomem *cpmp = &(im->im_cpm);  in serial_mpc8xx_pending()
230 	if (!input)  in serial_mpc8xx_pending()
233 	rtx = (struct serialbuffer __iomem *)&cpmp->cp_dpmem[CPM_SERIAL_BASE];  in serial_mpc8xx_pending()
235 	return !(in_be16(&rtx->rxbd.cbd_sc) & BD_SC_EMPTY);  in serial_mpc8xx_pending()
246 	{ .compatible = "fsl,pq1-smc" },