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_disable_unprepare(ahub->clk_apbif);  in tegra30_ahub_runtime_suspend()
49 	clk_disable_unprepare(ahub->clk_d_audio);  in tegra30_ahub_runtime_suspend()
69 	ret = clk_prepare_enable(ahub->clk_d_audio);  in tegra30_ahub_runtime_resume()
74 	ret = clk_prepare_enable(ahub->clk_apbif);  in tegra30_ahub_runtime_resume()
77 		clk_disable(ahub->clk_d_audio);  in tegra30_ahub_runtime_resume()
81 	regcache_cache_only(ahub->regmap_apbif, false);  in tegra30_ahub_runtime_resume()
82 	regcache_cache_only(ahub->regmap_ahub, false);  in tegra30_ahub_runtime_resume()
95 	channel = find_first_zero_bit(ahub->rx_usage,  in tegra30_ahub_allocate_rx_fifo()
100 	__set_bit(channel, ahub->rx_usage);  in tegra30_ahub_allocate_rx_fifo()
104 	*fiforeg = ahub->apbif_addr + TEGRA30_AHUB_CHANNEL_RXFIFO +  in tegra30_ahub_allocate_rx_fifo()
107 	pm_runtime_get_sync(ahub->dev);  in tegra30_ahub_allocate_rx_fifo()
133 	ahub->soc_data->set_audio_cif(ahub->regmap_apbif, reg, &cif_conf);  in tegra30_ahub_allocate_rx_fifo()
135 	pm_runtime_put(ahub->dev);  in tegra30_ahub_allocate_rx_fifo()
146 	pm_runtime_get_sync(ahub->dev);  in tegra30_ahub_enable_rx_fifo()
154 	pm_runtime_put(ahub->dev);  in tegra30_ahub_enable_rx_fifo()
165 	pm_runtime_get_sync(ahub->dev);  in tegra30_ahub_disable_rx_fifo()
173 	pm_runtime_put(ahub->dev);  in tegra30_ahub_disable_rx_fifo()
183 	__clear_bit(channel, ahub->rx_usage);  in tegra30_ahub_free_rx_fifo()
197 	channel = find_first_zero_bit(ahub->tx_usage,  in tegra30_ahub_allocate_tx_fifo()
202 	__set_bit(channel, ahub->tx_usage);  in tegra30_ahub_allocate_tx_fifo()
206 	*fiforeg = ahub->apbif_addr + TEGRA30_AHUB_CHANNEL_TXFIFO +  in tegra30_ahub_allocate_tx_fifo()
209 	pm_runtime_get_sync(ahub->dev);  in tegra30_ahub_allocate_tx_fifo()
235 	ahub->soc_data->set_audio_cif(ahub->regmap_apbif, reg, &cif_conf);  in tegra30_ahub_allocate_tx_fifo()
237 	pm_runtime_put(ahub->dev);  in tegra30_ahub_allocate_tx_fifo()
248 	pm_runtime_get_sync(ahub->dev);  in tegra30_ahub_enable_tx_fifo()
256 	pm_runtime_put(ahub->dev);  in tegra30_ahub_enable_tx_fifo()
267 	pm_runtime_get_sync(ahub->dev);  in tegra30_ahub_disable_tx_fifo()
275 	pm_runtime_put(ahub->dev);  in tegra30_ahub_disable_tx_fifo()
285 	__clear_bit(channel, ahub->tx_usage);  in tegra30_ahub_free_tx_fifo()
297 	pm_runtime_get_sync(ahub->dev);  in tegra30_ahub_set_rx_cif_source()
303 	pm_runtime_put(ahub->dev);  in tegra30_ahub_set_rx_cif_source()
314 	pm_runtime_get_sync(ahub->dev);  in tegra30_ahub_unset_rx_cif_source()
320 	pm_runtime_put(ahub->dev);  in tegra30_ahub_unset_rx_cif_source()
476 	.name = "ahub",
502 	{ .compatible = "nvidia,tegra124-ahub", .data = &soc_data_tegra124 },
503 	{ .compatible = "nvidia,tegra114-ahub", .data = &soc_data_tegra114 },
504 	{ .compatible = "nvidia,tegra30-ahub",  .data = &soc_data_tegra30 },
518 	if (ahub)  in tegra30_ahub_probe()
527 	 * The AHUB hosts a register bus: the "configlink". For this to  in tegra30_ahub_probe()
551 	ahub = devm_kzalloc(&pdev->dev, sizeof(struct tegra30_ahub),  in tegra30_ahub_probe()
553 	if (!ahub)  in tegra30_ahub_probe()
555 	dev_set_drvdata(&pdev->dev, ahub);  in tegra30_ahub_probe()
557 	ahub->soc_data = soc_data;  in tegra30_ahub_probe()
558 	ahub->dev = &pdev->dev;  in tegra30_ahub_probe()
560 	ahub->clk_d_audio = devm_clk_get(&pdev->dev, "d_audio");  in tegra30_ahub_probe()
561 	if (IS_ERR(ahub->clk_d_audio)) {  in tegra30_ahub_probe()
562 		dev_err(&pdev->dev, "Can't retrieve ahub d_audio clock\n");  in tegra30_ahub_probe()
563 		ret = PTR_ERR(ahub->clk_d_audio);  in tegra30_ahub_probe()
567 	ahub->clk_apbif = devm_clk_get(&pdev->dev, "apbif");  in tegra30_ahub_probe()
568 	if (IS_ERR(ahub->clk_apbif)) {  in tegra30_ahub_probe()
569 		dev_err(&pdev->dev, "Can't retrieve ahub apbif clock\n");  in tegra30_ahub_probe()
570 		ret = PTR_ERR(ahub->clk_apbif);  in tegra30_ahub_probe()
579 	ahub->apbif_addr = res0->start;  in tegra30_ahub_probe()
581 	ahub->regmap_apbif = devm_regmap_init_mmio(&pdev->dev, regs_apbif,  in tegra30_ahub_probe()
583 	if (IS_ERR(ahub->regmap_apbif)) {  in tegra30_ahub_probe()
585 		ret = PTR_ERR(ahub->regmap_apbif);  in tegra30_ahub_probe()
588 	regcache_cache_only(ahub->regmap_apbif, true);  in tegra30_ahub_probe()
594 	ahub->regmap_ahub = devm_regmap_init_mmio(&pdev->dev, regs_ahub,  in tegra30_ahub_probe()
596 	if (IS_ERR(ahub->regmap_ahub)) {  in tegra30_ahub_probe()
597 		dev_err(&pdev->dev, "ahub regmap init failed\n");  in tegra30_ahub_probe()
598 		ret = PTR_ERR(ahub->regmap_ahub);  in tegra30_ahub_probe()
601 	regcache_cache_only(ahub->regmap_ahub, true);  in tegra30_ahub_probe()
622 	if (!ahub)  in tegra30_ahub_remove()
635 	regcache_mark_dirty(ahub->regmap_ahub);  in tegra30_ahub_suspend()
636 	regcache_mark_dirty(ahub->regmap_apbif);  in tegra30_ahub_suspend()
650 	ret = regcache_sync(ahub->regmap_ahub);  in tegra30_ahub_resume()
651 	ret |= regcache_sync(ahub->regmap_apbif);  in tegra30_ahub_resume()
740 MODULE_DESCRIPTION("Tegra30 AHUB driver");