3  * tegra30_ahub.c - Tegra30 AHUB driver
21 #define DRV_NAME "tegra30-ahub"
23 static struct tegra30_ahub *ahub;  variable
27 	regmap_write(ahub->regmap_apbif, reg, val);  in tegra30_apbif_write()
34 	regmap_read(ahub->regmap_apbif, reg, &val);  in tegra30_apbif_read()
40 	regmap_write(ahub->regmap_ahub, reg, val);  in tegra30_audio_write()
45 	regcache_cache_only(ahub->regmap_apbif, true);  in tegra30_ahub_runtime_suspend()
46 	regcache_cache_only(ahub->regmap_ahub, true);  in tegra30_ahub_runtime_suspend()
48 	clk_bulk_disable_unprepare(ahub->nclocks, ahub->clocks);  in tegra30_ahub_runtime_suspend()
68 	ret = reset_control_bulk_assert(ahub->nresets, ahub->resets);  in tegra30_ahub_runtime_resume()
72 	ret = clk_bulk_prepare_enable(ahub->nclocks, ahub->clocks);  in tegra30_ahub_runtime_resume()
78 	ret = reset_control_bulk_deassert(ahub->nresets, ahub->resets);  in tegra30_ahub_runtime_resume()
82 	regcache_cache_only(ahub->regmap_apbif, false);  in tegra30_ahub_runtime_resume()
83 	regcache_cache_only(ahub->regmap_ahub, false);  in tegra30_ahub_runtime_resume()
84 	regcache_mark_dirty(ahub->regmap_apbif);  in tegra30_ahub_runtime_resume()
85 	regcache_mark_dirty(ahub->regmap_ahub);  in tegra30_ahub_runtime_resume()
87 	ret = regcache_sync(ahub->regmap_apbif);  in tegra30_ahub_runtime_resume()
91 	ret = regcache_sync(ahub->regmap_ahub);  in tegra30_ahub_runtime_resume()
98 	clk_bulk_disable_unprepare(ahub->nclocks, ahub->clocks);  in tegra30_ahub_runtime_resume()
111 	channel = find_first_zero_bit(ahub->rx_usage,  in tegra30_ahub_allocate_rx_fifo()
116 	__set_bit(channel, ahub->rx_usage);  in tegra30_ahub_allocate_rx_fifo()
120 	*fiforeg = ahub->apbif_addr + TEGRA30_AHUB_CHANNEL_RXFIFO +  in tegra30_ahub_allocate_rx_fifo()
123 	pm_runtime_get_sync(ahub->dev);  in tegra30_ahub_allocate_rx_fifo()
149 	ahub->soc_data->set_audio_cif(ahub->regmap_apbif, reg, &cif_conf);  in tegra30_ahub_allocate_rx_fifo()
151 	pm_runtime_put(ahub->dev);  in tegra30_ahub_allocate_rx_fifo()
162 	pm_runtime_get_sync(ahub->dev);  in tegra30_ahub_enable_rx_fifo()
170 	pm_runtime_put(ahub->dev);  in tegra30_ahub_enable_rx_fifo()
181 	pm_runtime_get_sync(ahub->dev);  in tegra30_ahub_disable_rx_fifo()
189 	pm_runtime_put(ahub->dev);  in tegra30_ahub_disable_rx_fifo()
199 	__clear_bit(channel, ahub->rx_usage);  in tegra30_ahub_free_rx_fifo()
213 	channel = find_first_zero_bit(ahub->tx_usage,  in tegra30_ahub_allocate_tx_fifo()
218 	__set_bit(channel, ahub->tx_usage);  in tegra30_ahub_allocate_tx_fifo()
222 	*fiforeg = ahub->apbif_addr + TEGRA30_AHUB_CHANNEL_TXFIFO +  in tegra30_ahub_allocate_tx_fifo()
225 	pm_runtime_get_sync(ahub->dev);  in tegra30_ahub_allocate_tx_fifo()
251 	ahub->soc_data->set_audio_cif(ahub->regmap_apbif, reg, &cif_conf);  in tegra30_ahub_allocate_tx_fifo()
253 	pm_runtime_put(ahub->dev);  in tegra30_ahub_allocate_tx_fifo()
264 	pm_runtime_get_sync(ahub->dev);  in tegra30_ahub_enable_tx_fifo()
272 	pm_runtime_put(ahub->dev);  in tegra30_ahub_enable_tx_fifo()
283 	pm_runtime_get_sync(ahub->dev);  in tegra30_ahub_disable_tx_fifo()
291 	pm_runtime_put(ahub->dev);  in tegra30_ahub_disable_tx_fifo()
301 	__clear_bit(channel, ahub->tx_usage);  in tegra30_ahub_free_tx_fifo()
313 	pm_runtime_get_sync(ahub->dev);  in tegra30_ahub_set_rx_cif_source()
319 	pm_runtime_put(ahub->dev);  in tegra30_ahub_set_rx_cif_source()
330 	pm_runtime_get_sync(ahub->dev);  in tegra30_ahub_unset_rx_cif_source()
336 	pm_runtime_put(ahub->dev);  in tegra30_ahub_unset_rx_cif_source()
481 	.name = "ahub",
507 	{ .compatible = "nvidia,tegra124-ahub", .data = &soc_data_tegra124 },
508 	{ .compatible = "nvidia,tegra114-ahub", .data = &soc_data_tegra114 },
509 	{ .compatible = "nvidia,tegra30-ahub",  .data = &soc_data_tegra30 },
524 	ahub = devm_kzalloc(&pdev->dev, sizeof(struct tegra30_ahub),  in tegra30_ahub_probe()
526 	if (!ahub)  in tegra30_ahub_probe()
528 	dev_set_drvdata(&pdev->dev, ahub);  in tegra30_ahub_probe()
530 	BUILD_BUG_ON(sizeof(ahub->resets) != sizeof(tegra30_ahub_resets_data));  in tegra30_ahub_probe()
531 	memcpy(ahub->resets, tegra30_ahub_resets_data, sizeof(ahub->resets));  in tegra30_ahub_probe()
533 	ahub->nresets = soc_data->num_resets;  in tegra30_ahub_probe()
534 	ahub->soc_data = soc_data;  in tegra30_ahub_probe()
535 	ahub->dev = &pdev->dev;  in tegra30_ahub_probe()
537 	ahub->clocks[ahub->nclocks++].id = "apbif";  in tegra30_ahub_probe()
538 	ahub->clocks[ahub->nclocks++].id = "d_audio";  in tegra30_ahub_probe()
540 	ret = devm_clk_bulk_get(&pdev->dev, ahub->nclocks, ahub->clocks);  in tegra30_ahub_probe()
544 	ret = devm_reset_control_bulk_get_exclusive(&pdev->dev, ahub->nresets,  in tegra30_ahub_probe()
545 						    ahub->resets);  in tegra30_ahub_probe()
557 	ahub->apbif_addr = res0->start;  in tegra30_ahub_probe()
559 	ahub->regmap_apbif = devm_regmap_init_mmio(&pdev->dev, regs_apbif,  in tegra30_ahub_probe()
561 	if (IS_ERR(ahub->regmap_apbif)) {  in tegra30_ahub_probe()
563 		ret = PTR_ERR(ahub->regmap_apbif);  in tegra30_ahub_probe()
566 	regcache_cache_only(ahub->regmap_apbif, true);  in tegra30_ahub_probe()
574 	ahub->regmap_ahub = devm_regmap_init_mmio(&pdev->dev, regs_ahub,  in tegra30_ahub_probe()
576 	if (IS_ERR(ahub->regmap_ahub)) {  in tegra30_ahub_probe()
577 		dev_err(&pdev->dev, "ahub regmap init failed\n");  in tegra30_ahub_probe()
578 		ret = PTR_ERR(ahub->regmap_ahub);  in tegra30_ahub_probe()
581 	regcache_cache_only(ahub->regmap_ahub, true);  in tegra30_ahub_probe()
590 	ahub = NULL;  in tegra30_ahub_probe()
599 	ahub = NULL;  in tegra30_ahub_remove()
685 MODULE_DESCRIPTION("Tegra30 AHUB driver");