1 // SPDX-License-Identifier: GPL-2.0-only
68 	ret = clk_prepare_enable(data->xo_clk);  in qcom_ssc_block_bus_init()
74 	ret = clk_prepare_enable(data->aggre2_clk);  in qcom_ssc_block_bus_init()
80 	ret = clk_prepare_enable(data->gcc_im_sleep_clk);  in qcom_ssc_block_bus_init()
90 	reg32_clear_bits(data->reg_mpm_sscaon_config0,  in qcom_ssc_block_bus_init()
93 	reg32_clear_bits(data->reg_mpm_sscaon_config1, BIT(31));  in qcom_ssc_block_bus_init()
95 	ret = clk_prepare_enable(data->aggre2_north_clk);  in qcom_ssc_block_bus_init()
101 	ret = reset_control_deassert(data->ssc_reset);  in qcom_ssc_block_bus_init()
107 	ret = reset_control_deassert(data->ssc_bcr);  in qcom_ssc_block_bus_init()
113 	regmap_write(data->halt_map, data->ssc_axi_halt + AXI_HALTREQ_REG, 0);  in qcom_ssc_block_bus_init()
115 	ret = clk_prepare_enable(data->ssc_xo_clk);  in qcom_ssc_block_bus_init()
121 	ret = clk_prepare_enable(data->ssc_ahbs_clk);  in qcom_ssc_block_bus_init()
130 	clk_disable(data->ssc_xo_clk);  in qcom_ssc_block_bus_init()
133 	regmap_write(data->halt_map, data->ssc_axi_halt + AXI_HALTREQ_REG, 1);  in qcom_ssc_block_bus_init()
135 	reset_control_assert(data->ssc_bcr);  in qcom_ssc_block_bus_init()
138 	reset_control_assert(data->ssc_reset);  in qcom_ssc_block_bus_init()
141 	clk_disable(data->aggre2_north_clk);  in qcom_ssc_block_bus_init()
144 	reg32_set_bits(data->reg_mpm_sscaon_config0, BIT(4) | BIT(5));  in qcom_ssc_block_bus_init()
145 	reg32_set_bits(data->reg_mpm_sscaon_config1, BIT(31));  in qcom_ssc_block_bus_init()
147 	clk_disable(data->gcc_im_sleep_clk);  in qcom_ssc_block_bus_init()
150 	clk_disable(data->aggre2_clk);  in qcom_ssc_block_bus_init()
153 	clk_disable(data->xo_clk);  in qcom_ssc_block_bus_init()
165 	clk_disable(data->ssc_xo_clk);  in qcom_ssc_block_bus_deinit()
166 	clk_disable(data->ssc_ahbs_clk);  in qcom_ssc_block_bus_deinit()
168 	ret = reset_control_assert(data->ssc_bcr);  in qcom_ssc_block_bus_deinit()
172 	regmap_write(data->halt_map, data->ssc_axi_halt + AXI_HALTREQ_REG, 1);  in qcom_ssc_block_bus_deinit()
174 	reg32_set_bits(data->reg_mpm_sscaon_config1, BIT(31));  in qcom_ssc_block_bus_deinit()
175 	reg32_set_bits(data->reg_mpm_sscaon_config0, BIT(4) | BIT(5));  in qcom_ssc_block_bus_deinit()
177 	ret = reset_control_assert(data->ssc_reset);  in qcom_ssc_block_bus_deinit()
181 	clk_disable(data->gcc_im_sleep_clk);  in qcom_ssc_block_bus_deinit()
183 	clk_disable(data->aggre2_north_clk);  in qcom_ssc_block_bus_deinit()
185 	clk_disable(data->aggre2_clk);  in qcom_ssc_block_bus_deinit()
186 	clk_disable(data->xo_clk);  in qcom_ssc_block_bus_deinit()
198 			ret = PTR_ERR(pds[i]) ? : -ENODATA;  in qcom_ssc_block_bus_pds_attach()
206 	for (i--; i >= 0; i--)  in qcom_ssc_block_bus_pds_attach()
235 	for (i--; i >= 0; i--) {  in qcom_ssc_block_bus_pds_enable()
256 	struct device_node *np = pdev->dev.of_node;  in qcom_ssc_block_bus_probe()
261 	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);  in qcom_ssc_block_bus_probe()
263 		return -ENOMEM;  in qcom_ssc_block_bus_probe()
269 	data->reg_mpm_sscaon_config0 = devm_ioremap_resource(&pdev->dev, res);  in qcom_ssc_block_bus_probe()
270 	if (IS_ERR(data->reg_mpm_sscaon_config0))  in qcom_ssc_block_bus_probe()
271 		return dev_err_probe(&pdev->dev, PTR_ERR(data->reg_mpm_sscaon_config0),  in qcom_ssc_block_bus_probe()
275 	data->reg_mpm_sscaon_config1 = devm_ioremap_resource(&pdev->dev, res);  in qcom_ssc_block_bus_probe()
276 	if (IS_ERR(data->reg_mpm_sscaon_config1))  in qcom_ssc_block_bus_probe()
277 		return dev_err_probe(&pdev->dev, PTR_ERR(data->reg_mpm_sscaon_config1),  in qcom_ssc_block_bus_probe()
281 	data->ssc_bcr = devm_reset_control_get_exclusive(&pdev->dev, "ssc_bcr");  in qcom_ssc_block_bus_probe()
282 	if (IS_ERR(data->ssc_bcr))  in qcom_ssc_block_bus_probe()
283 		return dev_err_probe(&pdev->dev, PTR_ERR(data->ssc_bcr),  in qcom_ssc_block_bus_probe()
286 	data->ssc_reset = devm_reset_control_get_exclusive(&pdev->dev, "ssc_reset");  in qcom_ssc_block_bus_probe()
287 	if (IS_ERR(data->ssc_reset))  in qcom_ssc_block_bus_probe()
288 		return dev_err_probe(&pdev->dev, PTR_ERR(data->ssc_reset),  in qcom_ssc_block_bus_probe()
292 	data->xo_clk = devm_clk_get(&pdev->dev, "xo");  in qcom_ssc_block_bus_probe()
293 	if (IS_ERR(data->xo_clk))  in qcom_ssc_block_bus_probe()
294 		return dev_err_probe(&pdev->dev, PTR_ERR(data->xo_clk),  in qcom_ssc_block_bus_probe()
297 	data->aggre2_clk = devm_clk_get(&pdev->dev, "aggre2");  in qcom_ssc_block_bus_probe()
298 	if (IS_ERR(data->aggre2_clk))  in qcom_ssc_block_bus_probe()
299 		return dev_err_probe(&pdev->dev, PTR_ERR(data->aggre2_clk),  in qcom_ssc_block_bus_probe()
302 	data->gcc_im_sleep_clk = devm_clk_get(&pdev->dev, "gcc_im_sleep");  in qcom_ssc_block_bus_probe()
303 	if (IS_ERR(data->gcc_im_sleep_clk))  in qcom_ssc_block_bus_probe()
304 		return dev_err_probe(&pdev->dev, PTR_ERR(data->gcc_im_sleep_clk),  in qcom_ssc_block_bus_probe()
307 	data->aggre2_north_clk = devm_clk_get(&pdev->dev, "aggre2_north");  in qcom_ssc_block_bus_probe()
308 	if (IS_ERR(data->aggre2_north_clk))  in qcom_ssc_block_bus_probe()
309 		return dev_err_probe(&pdev->dev, PTR_ERR(data->aggre2_north_clk),  in qcom_ssc_block_bus_probe()
312 	data->ssc_xo_clk = devm_clk_get(&pdev->dev, "ssc_xo");  in qcom_ssc_block_bus_probe()
313 	if (IS_ERR(data->ssc_xo_clk))  in qcom_ssc_block_bus_probe()
314 		return dev_err_probe(&pdev->dev, PTR_ERR(data->ssc_xo_clk),  in qcom_ssc_block_bus_probe()
317 	data->ssc_ahbs_clk = devm_clk_get(&pdev->dev, "ssc_ahbs");  in qcom_ssc_block_bus_probe()
318 	if (IS_ERR(data->ssc_ahbs_clk))  in qcom_ssc_block_bus_probe()
319 		return dev_err_probe(&pdev->dev, PTR_ERR(data->ssc_ahbs_clk),  in qcom_ssc_block_bus_probe()
322 	ret = of_parse_phandle_with_fixed_args(pdev->dev.of_node, "qcom,halt-regs", 1, 0,  in qcom_ssc_block_bus_probe()
325 		return dev_err_probe(&pdev->dev, ret, "Failed to parse qcom,halt-regs\n");  in qcom_ssc_block_bus_probe()
327 	data->halt_map = syscon_node_to_regmap(halt_args.np);  in qcom_ssc_block_bus_probe()
329 	if (IS_ERR(data->halt_map))  in qcom_ssc_block_bus_probe()
330 		return PTR_ERR(data->halt_map);  in qcom_ssc_block_bus_probe()
332 	data->ssc_axi_halt = halt_args.args[0];  in qcom_ssc_block_bus_probe()
335 	data->pd_names = qcom_ssc_block_pd_names;  in qcom_ssc_block_bus_probe()
336 	data->num_pds = ARRAY_SIZE(qcom_ssc_block_pd_names);  in qcom_ssc_block_bus_probe()
338 	ret = qcom_ssc_block_bus_pds_attach(&pdev->dev, data->pds, data->pd_names, data->num_pds);  in qcom_ssc_block_bus_probe()
340 		return dev_err_probe(&pdev->dev, ret, "error when attaching power domains\n");  in qcom_ssc_block_bus_probe()
342 	ret = qcom_ssc_block_bus_pds_enable(data->pds, data->num_pds);  in qcom_ssc_block_bus_probe()
344 		dev_err_probe(&pdev->dev, ret, "error when enabling power domains\n");  in qcom_ssc_block_bus_probe()
348 	qcom_ssc_block_bus_init(&pdev->dev);  in qcom_ssc_block_bus_probe()
350 	of_platform_populate(np, NULL, NULL, &pdev->dev);  in qcom_ssc_block_bus_probe()
355 	qcom_ssc_block_bus_pds_detach(&pdev->dev, data->pds, data->num_pds);  in qcom_ssc_block_bus_probe()
364 	qcom_ssc_block_bus_deinit(&pdev->dev);  in qcom_ssc_block_bus_remove()
366 	qcom_ssc_block_bus_pds_disable(data->pds, data->num_pds);  in qcom_ssc_block_bus_remove()
367 	qcom_ssc_block_bus_pds_detach(&pdev->dev, data->pds, data->num_pds);  in qcom_ssc_block_bus_remove()
368 	pm_runtime_disable(&pdev->dev);  in qcom_ssc_block_bus_remove()
369 	pm_clk_destroy(&pdev->dev);  in qcom_ssc_block_bus_remove()
373 	{ .compatible = "qcom,ssc-block-bus", },
382 		.name = "qcom-ssc-block-bus",
389 MODULE_DESCRIPTION("A driver for handling the init sequence needed for accessing the SSC block on (…