1 // SPDX-License-Identifier: GPL-2.0
266 	return readl(arb->base + arb->data->regs[reg]);  in pmif_readl()
271 	writel(val, arb->base + arb->data->regs[reg]);  in pmif_writel()
276 	writel(val, arb->spmimst_base + arb->data->spmimst_regs[reg]);  in mtk_spmi_writel()
283 	reg_rdata = pmif_readl(arb, arb->chan.ch_sta);  in pmif_is_fsm_vldclr()
288 static int pmif_arb_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid)  in pmif_arb_cmd()  argument
290 	struct pmif *arb = spmi_controller_get_drvdata(ctrl);  in pmif_arb_cmd()
296 		return -EINVAL;  in pmif_arb_cmd()
298 	cmd = opc - SPMI_CMD_RESET;  in pmif_arb_cmd()
301 	ret = readl_poll_timeout_atomic(arb->spmimst_base + arb->data->spmimst_regs[SPMI_OP_ST_STA],  in pmif_arb_cmd()
305 		dev_err(&ctrl->dev, "timeout, err = %d\n", ret);  in pmif_arb_cmd()
310 static int pmif_spmi_read_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid,  in pmif_spmi_read_cmd()  argument
311 			      u16 addr, u8 *buf, size_t len)  in pmif_spmi_read_cmd()  argument
313 	struct pmif *arb = spmi_controller_get_drvdata(ctrl);  in pmif_spmi_read_cmd()
320 		dev_err(&ctrl->dev, "exceed the max slv id\n");  in pmif_spmi_read_cmd()
321 		return -EINVAL;  in pmif_spmi_read_cmd()
324 	if (len > 4) {  in pmif_spmi_read_cmd()
325 		dev_err(&ctrl->dev, "pmif supports 1..4 bytes per trans, but:%zu requested", len);  in pmif_spmi_read_cmd()
327 		return -EINVAL;  in pmif_spmi_read_cmd()
335 		return -EINVAL;  in pmif_spmi_read_cmd()
338 	inf_reg = &arb->chan;  in pmif_spmi_read_cmd()
339 	ret = readl_poll_timeout_atomic(arb->base + arb->data->regs[inf_reg->ch_sta],  in pmif_spmi_read_cmd()
345 			pmif_writel(arb, 1, inf_reg->ch_rdy);  in pmif_spmi_read_cmd()
346 		dev_err(&ctrl->dev, "failed to wait for SWINF_IDLE\n");  in pmif_spmi_read_cmd()
351 	cmd = (opc << 30) | (sid << 24) | ((len - 1) << 16) | addr;  in pmif_spmi_read_cmd()
352 	pmif_writel(arb, cmd, inf_reg->ch_send);  in pmif_spmi_read_cmd()
358 	ret = readl_poll_timeout_atomic(arb->base + arb->data->regs[inf_reg->ch_sta],  in pmif_spmi_read_cmd()
362 		dev_err(&ctrl->dev, "failed to wait for SWINF_WFVLDCLR\n");  in pmif_spmi_read_cmd()
366 	data = pmif_readl(arb, inf_reg->rdata);  in pmif_spmi_read_cmd()
367 	memcpy(buf, &data, len);  in pmif_spmi_read_cmd()
368 	pmif_writel(arb, 1, inf_reg->ch_rdy);  in pmif_spmi_read_cmd()
373 static int pmif_spmi_write_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid,  in pmif_spmi_write_cmd()  argument
374 			       u16 addr, const u8 *buf, size_t len)  in pmif_spmi_write_cmd()  argument
376 	struct pmif *arb = spmi_controller_get_drvdata(ctrl);  in pmif_spmi_write_cmd()
381 	if (len > 4) {  in pmif_spmi_write_cmd()
382 		dev_err(&ctrl->dev, "pmif supports 1..4 bytes per trans, but:%zu requested", len);  in pmif_spmi_write_cmd()
384 		return -EINVAL;  in pmif_spmi_write_cmd()
395 		return -EINVAL;  in pmif_spmi_write_cmd()
398 	inf_reg = &arb->chan;  in pmif_spmi_write_cmd()
399 	ret = readl_poll_timeout_atomic(arb->base + arb->data->regs[inf_reg->ch_sta],  in pmif_spmi_write_cmd()
405 			pmif_writel(arb, 1, inf_reg->ch_rdy);  in pmif_spmi_write_cmd()
406 		dev_err(&ctrl->dev, "failed to wait for SWINF_IDLE\n");  in pmif_spmi_write_cmd()
411 	memcpy(&data, buf, len);  in pmif_spmi_write_cmd()
412 	pmif_writel(arb, data, inf_reg->wdata);  in pmif_spmi_write_cmd()
415 	cmd = (opc << 30) | BIT(29) | (sid << 24) | ((len - 1) << 16) | addr;  in pmif_spmi_write_cmd()
416 	pmif_writel(arb, cmd, inf_reg->ch_send);  in pmif_spmi_write_cmd()
436 	struct spmi_controller *ctrl;  in mtk_spmi_probe()  local
440 	ctrl = spmi_controller_alloc(&pdev->dev, sizeof(*arb));  in mtk_spmi_probe()
441 	if (!ctrl)  in mtk_spmi_probe()
442 		return -ENOMEM;  in mtk_spmi_probe()
444 	arb = spmi_controller_get_drvdata(ctrl);  in mtk_spmi_probe()
445 	arb->data = device_get_match_data(&pdev->dev);  in mtk_spmi_probe()
446 	if (!arb->data) {  in mtk_spmi_probe()
447 		err = -EINVAL;  in mtk_spmi_probe()
448 		dev_err(&pdev->dev, "Cannot get drv_data\n");  in mtk_spmi_probe()
452 	arb->base = devm_platform_ioremap_resource_byname(pdev, "pmif");  in mtk_spmi_probe()
453 	if (IS_ERR(arb->base)) {  in mtk_spmi_probe()
454 		err = PTR_ERR(arb->base);  in mtk_spmi_probe()
458 	arb->spmimst_base = devm_platform_ioremap_resource_byname(pdev, "spmimst");  in mtk_spmi_probe()
459 	if (IS_ERR(arb->spmimst_base)) {  in mtk_spmi_probe()
460 		err = PTR_ERR(arb->spmimst_base);  in mtk_spmi_probe()
464 	arb->nclks = ARRAY_SIZE(pmif_clock_names);  in mtk_spmi_probe()
465 	for (i = 0; i < arb->nclks; i++)  in mtk_spmi_probe()
466 		arb->clks[i].id = pmif_clock_names[i];  in mtk_spmi_probe()
468 	err = devm_clk_bulk_get(&pdev->dev, arb->nclks, arb->clks);  in mtk_spmi_probe()
470 		dev_err(&pdev->dev, "Failed to get clocks: %d\n", err);  in mtk_spmi_probe()
474 	err = clk_bulk_prepare_enable(arb->nclks, arb->clks);  in mtk_spmi_probe()
476 		dev_err(&pdev->dev, "Failed to enable clocks: %d\n", err);  in mtk_spmi_probe()
480 	ctrl->cmd = pmif_arb_cmd;  in mtk_spmi_probe()
481 	ctrl->read_cmd = pmif_spmi_read_cmd;  in mtk_spmi_probe()
482 	ctrl->write_cmd = pmif_spmi_write_cmd;  in mtk_spmi_probe()
484 	chan_offset = PMIF_CHAN_OFFSET * arb->data->soc_chan;  in mtk_spmi_probe()
485 	arb->chan.ch_sta = PMIF_SWINF_0_STA + chan_offset;  in mtk_spmi_probe()
486 	arb->chan.wdata = PMIF_SWINF_0_WDATA_31_0 + chan_offset;  in mtk_spmi_probe()
487 	arb->chan.rdata = PMIF_SWINF_0_RDATA_31_0 + chan_offset;  in mtk_spmi_probe()
488 	arb->chan.ch_send = PMIF_SWINF_0_ACC + chan_offset;  in mtk_spmi_probe()
489 	arb->chan.ch_rdy = PMIF_SWINF_0_VLD_CLR + chan_offset;  in mtk_spmi_probe()
491 	platform_set_drvdata(pdev, ctrl);  in mtk_spmi_probe()
493 	err = spmi_controller_add(ctrl);  in mtk_spmi_probe()
500 	clk_bulk_disable_unprepare(arb->nclks, arb->clks);  in mtk_spmi_probe()
502 	spmi_controller_put(ctrl);  in mtk_spmi_probe()
508 	struct spmi_controller *ctrl = platform_get_drvdata(pdev);  in mtk_spmi_remove()  local
509 	struct pmif *arb = spmi_controller_get_drvdata(ctrl);  in mtk_spmi_remove()
511 	clk_bulk_disable_unprepare(arb->nclks, arb->clks);  in mtk_spmi_remove()
512 	spmi_controller_remove(ctrl);  in mtk_spmi_remove()
513 	spmi_controller_put(ctrl);  in mtk_spmi_remove()
518 		.compatible = "mediatek,mt6873-spmi",
521 		.compatible = "mediatek,mt8195-spmi",
531 		.name	= "spmi-mtk",
539 MODULE_AUTHOR("Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com>");