Lines Matching +full:lpc +full:- +full:interrupts
1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2015-2018, Intel Corporation.
6 #define pr_fmt(fmt) "aspeed-kcs-bmc: " fmt
28 #define DEVICE_NAME "ast-kcs-bmc"
35 * LPCyE Enable LPC channel y
36 * IBFIEy Input Buffer Full IRQ Enable for LPC channel y
37 * IRQxEy Assert SerIRQ x for LPC channel y (Deprecated, use IDyIRQX, IRQXEy)
38 * IDyIRQX Use the specified 4-bit SerIRQ for LPC channel y
39 * SELyIRQX SerIRQ polarity for LPC channel y (low: 0, high: 1)
40 * IRQXEy Assert the SerIRQ specified in IDyIRQX for LPC channel y
147 rc = regmap_read(priv->map, reg, &val); in aspeed_kcs_inb()
158 rc = regmap_write(priv->map, reg, data); in aspeed_kcs_outb()
173 if (priv->upstream_irq.mode != aspeed_kcs_irq_serirq) in aspeed_kcs_outb()
176 switch (kcs_bmc->channel) { in aspeed_kcs_outb()
178 switch (priv->upstream_irq.id) { in aspeed_kcs_outb()
180 regmap_update_bits(priv->map, LPC_SIRQCR0, LPC_SIRQCR0_IRQ12E1, in aspeed_kcs_outb()
184 regmap_update_bits(priv->map, LPC_SIRQCR0, LPC_SIRQCR0_IRQ1E1, in aspeed_kcs_outb()
192 regmap_update_bits(priv->map, LPC_HICR5, LPC_HICR5_IRQXE2, LPC_HICR5_IRQXE2); in aspeed_kcs_outb()
195 regmap_update_bits(priv->map, LPC_HICR5, LPC_HICR5_IRQXE3, LPC_HICR5_IRQXE3); in aspeed_kcs_outb()
198 regmap_update_bits(priv->map, LPC_HICRC, LPC_HICRC_IRQXE4, LPC_HICRC_IRQXE4); in aspeed_kcs_outb()
210 rc = regmap_update_bits(priv->map, reg, mask, val); in aspeed_kcs_updateb()
232 return -EINVAL; in aspeed_kcs_set_address()
234 switch (priv->kcs_bmc.channel) { in aspeed_kcs_set_address()
236 regmap_update_bits(priv->map, LPC_HICR4, LPC_HICR4_LADR12AS, 0); in aspeed_kcs_set_address()
237 regmap_write(priv->map, LPC_LADR12H, addrs[0] >> 8); in aspeed_kcs_set_address()
238 regmap_write(priv->map, LPC_LADR12L, addrs[0] & 0xFF); in aspeed_kcs_set_address()
240 regmap_update_bits(priv->map, LPC_LSADR12, LPC_LSADR12_LSADR1_MASK, in aspeed_kcs_set_address()
243 regmap_update_bits(priv->map, LPC_HICRB, LPC_HICRB_EN16LADR1, in aspeed_kcs_set_address()
249 regmap_update_bits(priv->map, LPC_HICR4, LPC_HICR4_LADR12AS, LPC_HICR4_LADR12AS); in aspeed_kcs_set_address()
250 regmap_write(priv->map, LPC_LADR12H, addrs[0] >> 8); in aspeed_kcs_set_address()
251 regmap_write(priv->map, LPC_LADR12L, addrs[0] & 0xFF); in aspeed_kcs_set_address()
253 regmap_update_bits(priv->map, LPC_LSADR12, LPC_LSADR12_LSADR2_MASK, in aspeed_kcs_set_address()
256 regmap_update_bits(priv->map, LPC_HICRB, LPC_HICRB_EN16LADR2, in aspeed_kcs_set_address()
263 dev_err(priv->kcs_bmc.dev, in aspeed_kcs_set_address()
265 return -EINVAL; in aspeed_kcs_set_address()
268 regmap_write(priv->map, LPC_LADR3H, addrs[0] >> 8); in aspeed_kcs_set_address()
269 regmap_write(priv->map, LPC_LADR3L, addrs[0] & 0xFF); in aspeed_kcs_set_address()
274 regmap_write(priv->map, LPC_LADR4, ((addrs[0] + 1) << 16) | addrs[0]); in aspeed_kcs_set_address()
276 regmap_write(priv->map, LPC_LADR4, (addrs[1] << 16) | addrs[0]); in aspeed_kcs_set_address()
281 return -EINVAL; in aspeed_kcs_set_address()
297 return -EINVAL; in aspeed_kcs_map_serirq_type()
307 return -EINVAL; in aspeed_kcs_config_upstream_irq()
314 priv->upstream_irq.mode = aspeed_kcs_irq_serirq; in aspeed_kcs_config_upstream_irq()
315 priv->upstream_irq.id = id; in aspeed_kcs_config_upstream_irq()
317 switch (priv->kcs_bmc.channel) { in aspeed_kcs_config_upstream_irq()
323 return -EINVAL; in aspeed_kcs_config_upstream_irq()
328 regmap_update_bits(priv->map, LPC_HICR5, mask, val); in aspeed_kcs_config_upstream_irq()
333 return -EINVAL; in aspeed_kcs_config_upstream_irq()
338 regmap_update_bits(priv->map, LPC_HICR5, mask, val); in aspeed_kcs_config_upstream_irq()
344 regmap_update_bits(priv->map, LPC_HICRC, mask, val); in aspeed_kcs_config_upstream_irq()
347 dev_warn(priv->kcs_bmc.dev, in aspeed_kcs_config_upstream_irq()
349 priv->kcs_bmc.channel); in aspeed_kcs_config_upstream_irq()
350 return -EINVAL; in aspeed_kcs_config_upstream_irq()
360 switch (kcs_bmc->channel) { in aspeed_kcs_enable_channel()
362 regmap_update_bits(priv->map, LPC_HICR0, LPC_HICR0_LPC1E, enable * LPC_HICR0_LPC1E); in aspeed_kcs_enable_channel()
365 regmap_update_bits(priv->map, LPC_HICR0, LPC_HICR0_LPC2E, enable * LPC_HICR0_LPC2E); in aspeed_kcs_enable_channel()
368 regmap_update_bits(priv->map, LPC_HICR0, LPC_HICR0_LPC3E, enable * LPC_HICR0_LPC3E); in aspeed_kcs_enable_channel()
369 regmap_update_bits(priv->map, LPC_HICR4, in aspeed_kcs_enable_channel()
373 regmap_update_bits(priv->map, LPC_HICRB, LPC_HICRB_LPC4E, enable * LPC_HICRB_LPC4E); in aspeed_kcs_enable_channel()
376 pr_warn("%s: Unsupported channel: %d", __func__, kcs_bmc->channel); in aspeed_kcs_enable_channel()
387 spin_lock_irqsave(&priv->obe.lock, flags); in aspeed_kcs_check_obe()
388 if (priv->obe.remove) { in aspeed_kcs_check_obe()
389 spin_unlock_irqrestore(&priv->obe.lock, flags); in aspeed_kcs_check_obe()
393 str = aspeed_kcs_inb(&priv->kcs_bmc, priv->kcs_bmc.ioreg.str); in aspeed_kcs_check_obe()
396 spin_unlock_irqrestore(&priv->obe.lock, flags); in aspeed_kcs_check_obe()
399 spin_unlock_irqrestore(&priv->obe.lock, flags); in aspeed_kcs_check_obe()
401 kcs_bmc_handle_event(&priv->kcs_bmc); in aspeed_kcs_check_obe()
411 mod_timer(&priv->obe.timer, jiffies + OBE_POLL_PERIOD); in aspeed_kcs_irq_mask_update()
413 del_timer(&priv->obe.timer); in aspeed_kcs_irq_mask_update()
419 switch (kcs_bmc->channel) { in aspeed_kcs_irq_mask_update()
421 regmap_update_bits(priv->map, LPC_HICR2, LPC_HICR2_IBFIE1, in aspeed_kcs_irq_mask_update()
425 regmap_update_bits(priv->map, LPC_HICR2, LPC_HICR2_IBFIE2, in aspeed_kcs_irq_mask_update()
429 regmap_update_bits(priv->map, LPC_HICR2, LPC_HICR2_IBFIE3, in aspeed_kcs_irq_mask_update()
433 regmap_update_bits(priv->map, LPC_HICRB, LPC_HICRB_IBFIE4, in aspeed_kcs_irq_mask_update()
437 pr_warn("%s: Unsupported channel: %d", __func__, kcs_bmc->channel); in aspeed_kcs_irq_mask_update()
460 struct device *dev = &pdev->dev; in aspeed_kcs_config_downstream_irq()
484 np = pdev->dev.of_node; in aspeed_kcs_of_v1_get_channel()
488 dev_err(&pdev->dev, "no valid 'kcs_chan' configured\n"); in aspeed_kcs_of_v1_get_channel()
489 return -EINVAL; in aspeed_kcs_of_v1_get_channel()
500 rc = of_property_read_u32(pdev->dev.of_node, "kcs_addr", addrs); in aspeed_kcs_of_v1_get_io_address()
502 dev_err(&pdev->dev, "no valid 'kcs_addr' configured\n"); in aspeed_kcs_of_v1_get_io_address()
503 return -EINVAL; in aspeed_kcs_of_v1_get_io_address()
516 np = pdev->dev.of_node; in aspeed_kcs_of_v2_get_channel()
521 return -EINVAL; in aspeed_kcs_of_v2_get_channel()
526 return -EINVAL; in aspeed_kcs_of_v2_get_channel()
531 return -EINVAL; in aspeed_kcs_of_v2_get_channel()
539 return -EINVAL; in aspeed_kcs_of_v2_get_channel()
547 rc = of_property_read_variable_u32_array(pdev->dev.of_node, in aspeed_kcs_of_v2_get_io_address()
548 "aspeed,lpc-io-reg", in aspeed_kcs_of_v2_get_io_address()
551 dev_err(&pdev->dev, "No valid 'aspeed,lpc-io-reg' configured\n"); in aspeed_kcs_of_v2_get_io_address()
556 dev_err(&pdev->dev, "Invalid data address in 'aspeed,lpc-io-reg'\n"); in aspeed_kcs_of_v2_get_io_address()
557 return -EINVAL; in aspeed_kcs_of_v2_get_io_address()
561 dev_err(&pdev->dev, "Invalid status address in 'aspeed,lpc-io-reg'\n"); in aspeed_kcs_of_v2_get_io_address()
562 return -EINVAL; in aspeed_kcs_of_v2_get_io_address()
580 np = pdev->dev.of_node->parent; in aspeed_kcs_probe()
581 if (!of_device_is_compatible(np, "aspeed,ast2400-lpc-v2") && in aspeed_kcs_probe()
582 !of_device_is_compatible(np, "aspeed,ast2500-lpc-v2") && in aspeed_kcs_probe()
583 !of_device_is_compatible(np, "aspeed,ast2600-lpc-v2")) { in aspeed_kcs_probe()
584 dev_err(&pdev->dev, "unsupported LPC device binding\n"); in aspeed_kcs_probe()
585 return -ENODEV; in aspeed_kcs_probe()
588 ops = of_device_get_match_data(&pdev->dev); in aspeed_kcs_probe()
590 return -EINVAL; in aspeed_kcs_probe()
592 channel = ops->get_channel(pdev); in aspeed_kcs_probe()
596 nr_addrs = ops->get_io_address(pdev, addrs); in aspeed_kcs_probe()
600 np = pdev->dev.of_node; in aspeed_kcs_probe()
601 rc = of_property_read_u32_array(np, "aspeed,lpc-interrupts", upstream_irq, 2); in aspeed_kcs_probe()
602 if (rc && rc != -EINVAL) in aspeed_kcs_probe()
603 return -EINVAL; in aspeed_kcs_probe()
607 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); in aspeed_kcs_probe()
609 return -ENOMEM; in aspeed_kcs_probe()
611 kcs_bmc = &priv->kcs_bmc; in aspeed_kcs_probe()
612 kcs_bmc->dev = &pdev->dev; in aspeed_kcs_probe()
613 kcs_bmc->channel = channel; in aspeed_kcs_probe()
614 kcs_bmc->ioreg = ast_kcs_bmc_ioregs[channel - 1]; in aspeed_kcs_probe()
615 kcs_bmc->ops = &aspeed_kcs_ops; in aspeed_kcs_probe()
617 priv->map = syscon_node_to_regmap(pdev->dev.parent->of_node); in aspeed_kcs_probe()
618 if (IS_ERR(priv->map)) { in aspeed_kcs_probe()
619 dev_err(&pdev->dev, "Couldn't get regmap\n"); in aspeed_kcs_probe()
620 return -ENODEV; in aspeed_kcs_probe()
623 spin_lock_init(&priv->obe.lock); in aspeed_kcs_probe()
624 priv->obe.remove = false; in aspeed_kcs_probe()
625 timer_setup(&priv->obe.timer, aspeed_kcs_check_obe, 0); in aspeed_kcs_probe()
642 priv->upstream_irq.mode = aspeed_kcs_irq_none; in aspeed_kcs_probe()
650 rc = kcs_bmc_add_device(&priv->kcs_bmc); in aspeed_kcs_probe()
652 dev_warn(&pdev->dev, "Failed to register channel %d: %d\n", kcs_bmc->channel, rc); in aspeed_kcs_probe()
656 dev_info(&pdev->dev, "Initialised channel %d at 0x%x\n", in aspeed_kcs_probe()
657 kcs_bmc->channel, addrs[0]); in aspeed_kcs_probe()
665 struct kcs_bmc_device *kcs_bmc = &priv->kcs_bmc; in aspeed_kcs_remove()
673 spin_lock_irq(&priv->obe.lock); in aspeed_kcs_remove()
674 priv->obe.remove = true; in aspeed_kcs_remove()
675 spin_unlock_irq(&priv->obe.lock); in aspeed_kcs_remove()
676 del_timer_sync(&priv->obe.timer); in aspeed_kcs_remove()
692 { .compatible = "aspeed,ast2400-kcs-bmc", .data = &of_v1_ops },
693 { .compatible = "aspeed,ast2500-kcs-bmc", .data = &of_v1_ops },
694 { .compatible = "aspeed,ast2400-kcs-bmc-v2", .data = &of_v2_ops },
695 { .compatible = "aspeed,ast2500-kcs-bmc-v2", .data = &of_v2_ops },