1 // SPDX-License-Identifier: GPL-2.0
267 	return readl(arb->base + arb->data->regs[reg]);  in pmif_readl()
272 	writel(val, arb->base + arb->data->regs[reg]);  in pmif_writel()
277 	writel(val, arb->spmimst_base + arb->data->spmimst_regs[reg]);  in mtk_spmi_writel()
284 	reg_rdata = pmif_readl(arb, arb->chan.ch_sta);  in pmif_is_fsm_vldclr()
289 static int pmif_arb_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid)  in pmif_arb_cmd()  argument
291 	struct pmif *arb = spmi_controller_get_drvdata(ctrl);  in pmif_arb_cmd()
297 		return -EINVAL;  in pmif_arb_cmd()
299 	cmd = opc - SPMI_CMD_RESET;  in pmif_arb_cmd()
302 	ret = readl_poll_timeout_atomic(arb->spmimst_base + arb->data->spmimst_regs[SPMI_OP_ST_STA],  in pmif_arb_cmd()
306 		dev_err(&ctrl->dev, "timeout, err = %d\n", ret);  in pmif_arb_cmd()
311 static int pmif_spmi_read_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid,  in pmif_spmi_read_cmd()  argument
312 			      u16 addr, u8 *buf, size_t len)  in pmif_spmi_read_cmd()  argument
314 	struct pmif *arb = spmi_controller_get_drvdata(ctrl);  in pmif_spmi_read_cmd()
322 		dev_err(&ctrl->dev, "exceed the max slv id\n");  in pmif_spmi_read_cmd()
323 		return -EINVAL;  in pmif_spmi_read_cmd()
326 	if (len > 4) {  in pmif_spmi_read_cmd()
327 		dev_err(&ctrl->dev, "pmif supports 1..4 bytes per trans, but:%zu requested", len);  in pmif_spmi_read_cmd()
329 		return -EINVAL;  in pmif_spmi_read_cmd()
337 		return -EINVAL;  in pmif_spmi_read_cmd()
339 	raw_spin_lock_irqsave(&arb->lock, flags);  in pmif_spmi_read_cmd()
341 	inf_reg = &arb->chan;  in pmif_spmi_read_cmd()
342 	ret = readl_poll_timeout_atomic(arb->base + arb->data->regs[inf_reg->ch_sta],  in pmif_spmi_read_cmd()
348 			pmif_writel(arb, 1, inf_reg->ch_rdy);  in pmif_spmi_read_cmd()
349 		raw_spin_unlock_irqrestore(&arb->lock, flags);  in pmif_spmi_read_cmd()
350 		dev_err(&ctrl->dev, "failed to wait for SWINF_IDLE\n");  in pmif_spmi_read_cmd()
355 	cmd = (opc << 30) | (sid << 24) | ((len - 1) << 16) | addr;  in pmif_spmi_read_cmd()
356 	pmif_writel(arb, cmd, inf_reg->ch_send);  in pmif_spmi_read_cmd()
357 	raw_spin_unlock_irqrestore(&arb->lock, flags);  in pmif_spmi_read_cmd()
363 	ret = readl_poll_timeout_atomic(arb->base + arb->data->regs[inf_reg->ch_sta],  in pmif_spmi_read_cmd()
367 		dev_err(&ctrl->dev, "failed to wait for SWINF_WFVLDCLR\n");  in pmif_spmi_read_cmd()
371 	data = pmif_readl(arb, inf_reg->rdata);  in pmif_spmi_read_cmd()
372 	memcpy(buf, &data, len);  in pmif_spmi_read_cmd()
373 	pmif_writel(arb, 1, inf_reg->ch_rdy);  in pmif_spmi_read_cmd()
378 static int pmif_spmi_write_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid,  in pmif_spmi_write_cmd()  argument
379 			       u16 addr, const u8 *buf, size_t len)  in pmif_spmi_write_cmd()  argument
381 	struct pmif *arb = spmi_controller_get_drvdata(ctrl);  in pmif_spmi_write_cmd()
389 		dev_err(&ctrl->dev, "exceed the max slv id\n");  in pmif_spmi_write_cmd()
390 		return -EINVAL;  in pmif_spmi_write_cmd()
393 	if (len > 4) {  in pmif_spmi_write_cmd()
394 		dev_err(&ctrl->dev, "pmif supports 1..4 bytes per trans, but:%zu requested", len);  in pmif_spmi_write_cmd()
396 		return -EINVAL;  in pmif_spmi_write_cmd()
407 		return -EINVAL;  in pmif_spmi_write_cmd()
410 	memcpy(&wdata, buf, len);  in pmif_spmi_write_cmd()
412 	raw_spin_lock_irqsave(&arb->lock, flags);  in pmif_spmi_write_cmd()
414 	inf_reg = &arb->chan;  in pmif_spmi_write_cmd()
415 	ret = readl_poll_timeout_atomic(arb->base + arb->data->regs[inf_reg->ch_sta],  in pmif_spmi_write_cmd()
421 			pmif_writel(arb, 1, inf_reg->ch_rdy);  in pmif_spmi_write_cmd()
422 		raw_spin_unlock_irqrestore(&arb->lock, flags);  in pmif_spmi_write_cmd()
423 		dev_err(&ctrl->dev, "failed to wait for SWINF_IDLE\n");  in pmif_spmi_write_cmd()
427 	pmif_writel(arb, wdata, inf_reg->wdata);  in pmif_spmi_write_cmd()
430 	cmd = (opc << 30) | BIT(29) | (sid << 24) | ((len - 1) << 16) | addr;  in pmif_spmi_write_cmd()
431 	pmif_writel(arb, cmd, inf_reg->ch_send);  in pmif_spmi_write_cmd()
432 	raw_spin_unlock_irqrestore(&arb->lock, flags);  in pmif_spmi_write_cmd()
452 	struct spmi_controller *ctrl;  in mtk_spmi_probe()  local
456 	ctrl = devm_spmi_controller_alloc(&pdev->dev, sizeof(*arb));  in mtk_spmi_probe()
457 	if (IS_ERR(ctrl))  in mtk_spmi_probe()
458 		return PTR_ERR(ctrl);  in mtk_spmi_probe()
460 	arb = spmi_controller_get_drvdata(ctrl);  in mtk_spmi_probe()
461 	arb->data = device_get_match_data(&pdev->dev);  in mtk_spmi_probe()
462 	if (!arb->data) {  in mtk_spmi_probe()
463 		dev_err(&pdev->dev, "Cannot get drv_data\n");  in mtk_spmi_probe()
464 		return -EINVAL;  in mtk_spmi_probe()
467 	arb->base = devm_platform_ioremap_resource_byname(pdev, "pmif");  in mtk_spmi_probe()
468 	if (IS_ERR(arb->base))  in mtk_spmi_probe()
469 		return PTR_ERR(arb->base);  in mtk_spmi_probe()
471 	arb->spmimst_base = devm_platform_ioremap_resource_byname(pdev, "spmimst");  in mtk_spmi_probe()
472 	if (IS_ERR(arb->spmimst_base))  in mtk_spmi_probe()
473 		return PTR_ERR(arb->spmimst_base);  in mtk_spmi_probe()
475 	arb->nclks = ARRAY_SIZE(pmif_clock_names);  in mtk_spmi_probe()
476 	for (i = 0; i < arb->nclks; i++)  in mtk_spmi_probe()
477 		arb->clks[i].id = pmif_clock_names[i];  in mtk_spmi_probe()
479 	err = clk_bulk_get(&pdev->dev, arb->nclks, arb->clks);  in mtk_spmi_probe()
481 		dev_err(&pdev->dev, "Failed to get clocks: %d\n", err);  in mtk_spmi_probe()
485 	err = clk_bulk_prepare_enable(arb->nclks, arb->clks);  in mtk_spmi_probe()
487 		dev_err(&pdev->dev, "Failed to enable clocks: %d\n", err);  in mtk_spmi_probe()
491 	ctrl->cmd = pmif_arb_cmd;  in mtk_spmi_probe()
492 	ctrl->read_cmd = pmif_spmi_read_cmd;  in mtk_spmi_probe()
493 	ctrl->write_cmd = pmif_spmi_write_cmd;  in mtk_spmi_probe()
495 	chan_offset = PMIF_CHAN_OFFSET * arb->data->soc_chan;  in mtk_spmi_probe()
496 	arb->chan.ch_sta = PMIF_SWINF_0_STA + chan_offset;  in mtk_spmi_probe()
497 	arb->chan.wdata = PMIF_SWINF_0_WDATA_31_0 + chan_offset;  in mtk_spmi_probe()
498 	arb->chan.rdata = PMIF_SWINF_0_RDATA_31_0 + chan_offset;  in mtk_spmi_probe()
499 	arb->chan.ch_send = PMIF_SWINF_0_ACC + chan_offset;  in mtk_spmi_probe()
500 	arb->chan.ch_rdy = PMIF_SWINF_0_VLD_CLR + chan_offset;  in mtk_spmi_probe()
502 	raw_spin_lock_init(&arb->lock);  in mtk_spmi_probe()
504 	platform_set_drvdata(pdev, ctrl);  in mtk_spmi_probe()
506 	err = spmi_controller_add(ctrl);  in mtk_spmi_probe()
513 	clk_bulk_disable_unprepare(arb->nclks, arb->clks);  in mtk_spmi_probe()
515 	clk_bulk_put(arb->nclks, arb->clks);  in mtk_spmi_probe()
521 	struct spmi_controller *ctrl = platform_get_drvdata(pdev);  in mtk_spmi_remove()  local
522 	struct pmif *arb = spmi_controller_get_drvdata(ctrl);  in mtk_spmi_remove()
524 	spmi_controller_remove(ctrl);  in mtk_spmi_remove()
525 	clk_bulk_disable_unprepare(arb->nclks, arb->clks);  in mtk_spmi_remove()
526 	clk_bulk_put(arb->nclks, arb->clks);  in mtk_spmi_remove()
531 		.compatible = "mediatek,mt6873-spmi",
534 		.compatible = "mediatek,mt8195-spmi",
544 		.name	= "spmi-mtk",
552 MODULE_AUTHOR("Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com>");