1 // SPDX-License-Identifier: GPL-2.0-only
3  * PRU-ICSS platform driver for various TI SoCs
5  * Copyright (C) 2014-2020 Texas Instruments Incorporated - http://www.ti.com/
7  *	Suman Anna <s-anna@ti.com>
11 #include <linux/clk-provider.h>
12 #include <linux/dma-mapping.h>
24  * struct pruss_private_data - PRUSS driver private data
45 	struct device *dev = pruss->dev;  in pruss_clk_mux_setup()
57 		return -ENODEV;  in pruss_clk_mux_setup()
62 		dev_err(dev, "mux-clock %pOF must have parents\n", clk_mux_np);  in pruss_clk_mux_setup()
63 		ret = -EINVAL;  in pruss_clk_mux_setup()
70 		ret = -ENOMEM;  in pruss_clk_mux_setup()
79 		ret = -ENOMEM;  in pruss_clk_mux_setup()
87 	reg = pruss->cfg_base + reg_offset;  in pruss_clk_mux_setup()
125 	struct device *dev = pruss->dev;  in pruss_clk_init()
130 		return -ENODEV;  in pruss_clk_init()
135 		return -ENODEV;  in pruss_clk_init()
138 	if (data && data->has_core_mux_clock) {  in pruss_clk_init()
139 		ret = pruss_clk_mux_setup(pruss, pruss->core_clk_mux,  in pruss_clk_init()
140 					  "coreclk-mux", clks_np);  in pruss_clk_init()
142 			dev_err(dev, "failed to setup coreclk-mux\n");  in pruss_clk_init()
147 	ret = pruss_clk_mux_setup(pruss, pruss->iep_clk_mux, "iepclk-mux",  in pruss_clk_init()
150 		dev_err(dev, "failed to setup iepclk-mux\n");  in pruss_clk_init()
168 	struct device *dev = &pdev->dev;  in pruss_probe()
177 	data = of_device_get_match_data(&pdev->dev);  in pruss_probe()
180 		return -ENODEV;  in pruss_probe()
191 		return -ENOMEM;  in pruss_probe()
193 	pruss->dev = dev;  in pruss_probe()
198 		return -ENODEV;  in pruss_probe()
206 		if (data && data->has_no_sharedram && i == PRUSS_MEM_SHRD_RAM2)  in pruss_probe()
209 		index = of_property_match_string(child, "reg-names",  in pruss_probe()
218 			return -EINVAL;  in pruss_probe()
221 		pruss->mem_regions[i].va = devm_ioremap(dev, res.start,  in pruss_probe()
223 		if (!pruss->mem_regions[i].va) {  in pruss_probe()
227 			return -ENOMEM;  in pruss_probe()
229 		pruss->mem_regions[i].pa = res.start;  in pruss_probe()
230 		pruss->mem_regions[i].size = resource_size(&res);  in pruss_probe()
233 			mem_names[i], &pruss->mem_regions[i].pa,  in pruss_probe()
234 			pruss->mem_regions[i].size, pruss->mem_regions[i].va);  in pruss_probe()
251 		ret = -ENODEV;  in pruss_probe()
256 		ret = -ENOMEM;  in pruss_probe()
260 	pruss->cfg_base = devm_ioremap(dev, res.start, resource_size(&res));  in pruss_probe()
261 	if (!pruss->cfg_base) {  in pruss_probe()
262 		ret = -ENOMEM;  in pruss_probe()
268 	regmap_conf.max_register = resource_size(&res) - 4;  in pruss_probe()
270 	pruss->cfg_regmap = devm_regmap_init_mmio(dev, pruss->cfg_base,  in pruss_probe()
273 	if (IS_ERR(pruss->cfg_regmap)) {  in pruss_probe()
275 			PTR_ERR(pruss->cfg_regmap));  in pruss_probe()
276 		ret = PTR_ERR(pruss->cfg_regmap);  in pruss_probe()
282 		dev_err(dev, "failed to setup coreclk-mux\n");  in pruss_probe()
307 	struct device *dev = &pdev->dev;  in pruss_remove()
317 /* instance-specific driver private data */
331 	{ .compatible = "ti,am3356-pruss" },
332 	{ .compatible = "ti,am4376-pruss0", .data = &am437x_pruss0_data, },
333 	{ .compatible = "ti,am4376-pruss1", .data = &am437x_pruss1_data, },
334 	{ .compatible = "ti,am5728-pruss" },
335 	{ .compatible = "ti,k2g-pruss" },
336 	{ .compatible = "ti,am654-icssg", .data = &am65x_j721e_pruss_data, },
337 	{ .compatible = "ti,j721e-icssg", .data = &am65x_j721e_pruss_data, },
352 MODULE_AUTHOR("Suman Anna <s-anna@ti.com>");
353 MODULE_DESCRIPTION("PRU-ICSS Subsystem Driver");