1 // SPDX-License-Identifier: GPL-2.0-or-later
7 #include <dt-bindings/soc/bcm-pmb.h>
79 	int id;  member
80 	u8 bus;  member
90 static int bcm_pmb_bpcm_read(struct bcm_pmb *pmb, int bus, u8 device,  in bcm_pmb_bpcm_read()  argument
93 	void __iomem *base = pmb->base + bus * 0x20;  in bcm_pmb_bpcm_read()
97 	spin_lock_irqsave(&pmb->lock, flags);  in bcm_pmb_bpcm_read()
99 	spin_unlock_irqrestore(&pmb->lock, flags);  in bcm_pmb_bpcm_read()
102 		*val = pmb->little_endian ? le32_to_cpu(*val) : be32_to_cpu(*val);  in bcm_pmb_bpcm_read()
107 static int bcm_pmb_bpcm_write(struct bcm_pmb *pmb, int bus, u8 device,  in bcm_pmb_bpcm_write()  argument
110 	void __iomem *base = pmb->base + bus * 0x20;  in bcm_pmb_bpcm_write()
114 	val = pmb->little_endian ? cpu_to_le32(val) : cpu_to_be32(val);  in bcm_pmb_bpcm_write()
116 	spin_lock_irqsave(&pmb->lock, flags);  in bcm_pmb_bpcm_write()
118 	spin_unlock_irqrestore(&pmb->lock, flags);  in bcm_pmb_bpcm_write()
123 static int bcm_pmb_power_off_zone(struct bcm_pmb *pmb, int bus, u8 device,  in bcm_pmb_power_off_zone()  argument
132 	err = bcm_pmb_bpcm_read(pmb, bus, device, offset, &val);  in bcm_pmb_power_off_zone()
139 	err = bcm_pmb_bpcm_write(pmb, bus, device, offset, val);  in bcm_pmb_power_off_zone()
144 static int bcm_pmb_power_on_zone(struct bcm_pmb *pmb, int bus, u8 device,  in bcm_pmb_power_on_zone()  argument
153 	err = bcm_pmb_bpcm_read(pmb, bus, device, offset, &val);  in bcm_pmb_power_on_zone()
164 		err = bcm_pmb_bpcm_write(pmb, bus, device, offset, val);  in bcm_pmb_power_on_zone()
170 static int bcm_pmb_power_off_device(struct bcm_pmb *pmb, int bus, u8 device)  in bcm_pmb_power_off_device()  argument
179 	err = bcm_pmb_bpcm_read(pmb, bus, device, offset, &val);  in bcm_pmb_power_off_device()
186 		err = bcm_pmb_bpcm_write(pmb, bus, device, offset, val);  in bcm_pmb_power_off_device()
192 static int bcm_pmb_power_on_device(struct bcm_pmb *pmb, int bus, u8 device)  in bcm_pmb_power_on_device()  argument
198 	err = bcm_pmb_bpcm_read(pmb, bus, device, BPCM_CAPABILITIES, &val);  in bcm_pmb_power_on_device()
203 		err = bcm_pmb_power_on_zone(pmb, bus, device, i);  in bcm_pmb_power_on_device()
211 static int bcm_pmb_power_on_sata(struct bcm_pmb *pmb, int bus, u8 device)  in bcm_pmb_power_on_sata()  argument
215 	err = bcm_pmb_power_on_zone(pmb, bus, device, 0);  in bcm_pmb_power_on_sata()
220 	err = bcm_pmb_bpcm_write(pmb, bus, device, BPCM_MISC_CONTROL, 0);  in bcm_pmb_power_on_sata()
224 	err = bcm_pmb_bpcm_write(pmb, bus, device, BPCM_SR_CONTROL, 0xffffffff);  in bcm_pmb_power_on_sata()
228 	err = bcm_pmb_bpcm_write(pmb, bus, device, BPCM_SR_CONTROL, 0);  in bcm_pmb_power_on_sata()
236 	const struct bcm_pmb_pd_data *data = pd->data;  in bcm_pmb_power_on()
237 	struct bcm_pmb *pmb = pd->pmb;  in bcm_pmb_power_on()
239 	switch (data->id) {  in bcm_pmb_power_on()
243 		return bcm_pmb_power_on_zone(pmb, data->bus, data->device, 0);  in bcm_pmb_power_on()
245 		return bcm_pmb_power_on_device(pmb, data->bus, data->device);  in bcm_pmb_power_on()
247 		return bcm_pmb_power_on_sata(pmb, data->bus, data->device);  in bcm_pmb_power_on()
249 		dev_err(pmb->dev, "unsupported device id: %d\n", data->id);  in bcm_pmb_power_on()
250 		return -EINVAL;  in bcm_pmb_power_on()
257 	const struct bcm_pmb_pd_data *data = pd->data;  in bcm_pmb_power_off()
258 	struct bcm_pmb *pmb = pd->pmb;  in bcm_pmb_power_off()
260 	switch (data->id) {  in bcm_pmb_power_off()
264 		return bcm_pmb_power_off_zone(pmb, data->bus, data->device, 0);  in bcm_pmb_power_off()
266 		return bcm_pmb_power_off_device(pmb, data->bus, data->device);  in bcm_pmb_power_off()
268 		dev_err(pmb->dev, "unsupported device id: %d\n", data->id);  in bcm_pmb_power_off()
269 		return -EINVAL;  in bcm_pmb_power_off()
275 	struct device *dev = &pdev->dev;  in bcm_pmb_probe()
284 		return -ENOMEM;  in bcm_pmb_probe()
286 	pmb->dev = dev;  in bcm_pmb_probe()
288 	pmb->base = devm_platform_ioremap_resource(pdev, 0);  in bcm_pmb_probe()
289 	if (IS_ERR(pmb->base))  in bcm_pmb_probe()
290 		return PTR_ERR(pmb->base);  in bcm_pmb_probe()
292 	spin_lock_init(&pmb->lock);  in bcm_pmb_probe()
294 	pmb->little_endian = !of_device_is_big_endian(dev->of_node);  in bcm_pmb_probe()
298 		return -EINVAL;  in bcm_pmb_probe()
301 	for (e = table; e->name; e++)  in bcm_pmb_probe()
302 		max_id = max(max_id, e->id);  in bcm_pmb_probe()
304 	pmb->genpd_onecell_data.num_domains = max_id + 1;  in bcm_pmb_probe()
305 	pmb->genpd_onecell_data.domains =  in bcm_pmb_probe()
306 		devm_kcalloc(dev, pmb->genpd_onecell_data.num_domains,  in bcm_pmb_probe()
308 	if (!pmb->genpd_onecell_data.domains)  in bcm_pmb_probe()
309 		return -ENOMEM;  in bcm_pmb_probe()
311 	for (e = table; e->name; e++) {  in bcm_pmb_probe()
315 			return -ENOMEM;  in bcm_pmb_probe()
317 		pd->pmb = pmb;  in bcm_pmb_probe()
318 		pd->data = e;  in bcm_pmb_probe()
319 		pd->genpd.name = e->name;  in bcm_pmb_probe()
320 		pd->genpd.power_on = bcm_pmb_power_on;  in bcm_pmb_probe()
321 		pd->genpd.power_off = bcm_pmb_power_off;  in bcm_pmb_probe()
323 		pm_genpd_init(&pd->genpd, NULL, true);  in bcm_pmb_probe()
324 		pmb->genpd_onecell_data.domains[e->id] = &pd->genpd;  in bcm_pmb_probe()
327 	err = of_genpd_add_provider_onecell(dev->of_node, &pmb->genpd_onecell_data);  in bcm_pmb_probe()
337 	{ .name = "pcie2", .id = BCM_PMB_PCIE2, .bus = 0, .device = 2, },
338 	{ .name = "pcie0", .id = BCM_PMB_PCIE0, .bus = 1, .device = 14, },
339 	{ .name = "pcie1", .id = BCM_PMB_PCIE1, .bus = 1, .device = 15, },
340 	{ .name = "usb", .id = BCM_PMB_HOST_USB, .bus = 1, .device = 17, },
345 	{ .name = "sata", .id = BCM_PMB_SATA, .bus = 0, .device = 3, },
350 	{ .compatible = "brcm,bcm4908-pmb", .data = &bcm_pmb_bcm4908_data, },
351 	{ .compatible = "brcm,bcm63138-pmb", .data = &bcm_pmb_bcm63138_data, },
357 		.name = "bcm-pmb",