^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /* (C) 2015 Pengutronix, Alexander Aring <aar@pengutronix.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Authors:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Alexander Aring <aar@pengutronix.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Eric Anholt <eric@anholt.net>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/of_platform.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/pm_domain.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <dt-bindings/power/raspberrypi-power.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <soc/bcm2835/raspberrypi-firmware.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * Firmware indices for the old power domains interface. Only a few
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * of them were actually implemented.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define RPI_OLD_POWER_DOMAIN_USB 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define RPI_OLD_POWER_DOMAIN_V3D 10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) struct rpi_power_domain {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) u32 domain;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) bool enabled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) bool old_interface;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) struct generic_pm_domain base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) struct rpi_firmware *fw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) struct rpi_power_domains {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) bool has_new_interface;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) struct genpd_onecell_data xlate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) struct rpi_firmware *fw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) struct rpi_power_domain domains[RPI_POWER_DOMAIN_COUNT];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * Packet definition used by RPI_FIRMWARE_SET_POWER_STATE and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * RPI_FIRMWARE_SET_DOMAIN_STATE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) struct rpi_power_domain_packet {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) u32 domain;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) u32 on;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * Asks the firmware to enable or disable power on a specific power
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * domain.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) static int rpi_firmware_set_power(struct rpi_power_domain *rpi_domain, bool on)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct rpi_power_domain_packet packet;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) packet.domain = rpi_domain->domain;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) packet.on = on;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) return rpi_firmware_property(rpi_domain->fw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) rpi_domain->old_interface ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) RPI_FIRMWARE_SET_POWER_STATE :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) RPI_FIRMWARE_SET_DOMAIN_STATE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) &packet, sizeof(packet));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) static int rpi_domain_off(struct generic_pm_domain *domain)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) struct rpi_power_domain *rpi_domain =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) container_of(domain, struct rpi_power_domain, base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) return rpi_firmware_set_power(rpi_domain, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) static int rpi_domain_on(struct generic_pm_domain *domain)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) struct rpi_power_domain *rpi_domain =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) container_of(domain, struct rpi_power_domain, base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) return rpi_firmware_set_power(rpi_domain, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) static void rpi_common_init_power_domain(struct rpi_power_domains *rpi_domains,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) int xlate_index, const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) struct rpi_power_domain *dom = &rpi_domains->domains[xlate_index];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) dom->fw = rpi_domains->fw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) dom->base.name = name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) dom->base.power_on = rpi_domain_on;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) dom->base.power_off = rpi_domain_off;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) * Treat all power domains as off at boot.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) * The firmware itself may be keeping some domains on, but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) * from Linux's perspective all we control is the refcounts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) * that we give to the firmware, and we can't ask the firmware
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) * to turn off something that we haven't ourselves turned on.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) pm_genpd_init(&dom->base, NULL, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) rpi_domains->xlate.domains[xlate_index] = &dom->base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static void rpi_init_power_domain(struct rpi_power_domains *rpi_domains,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) int xlate_index, const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) struct rpi_power_domain *dom = &rpi_domains->domains[xlate_index];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) if (!rpi_domains->has_new_interface)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) /* The DT binding index is the firmware's domain index minus one. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) dom->domain = xlate_index + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) rpi_common_init_power_domain(rpi_domains, xlate_index, name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) static void rpi_init_old_power_domain(struct rpi_power_domains *rpi_domains,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) int xlate_index, int domain,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) struct rpi_power_domain *dom = &rpi_domains->domains[xlate_index];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) dom->old_interface = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) dom->domain = domain;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) rpi_common_init_power_domain(rpi_domains, xlate_index, name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) * Detects whether the firmware supports the new power domains interface.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) * The firmware doesn't actually return an error on an unknown tag,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) * and just skips over it, so we do the detection by putting an
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * unexpected value in the return field and checking if it was
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) * unchanged.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) static bool
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) rpi_has_new_domain_support(struct rpi_power_domains *rpi_domains)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) struct rpi_power_domain_packet packet;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) packet.domain = RPI_POWER_DOMAIN_ARM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) packet.on = ~0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) ret = rpi_firmware_property(rpi_domains->fw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) RPI_FIRMWARE_GET_DOMAIN_STATE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) &packet, sizeof(packet));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) return ret == 0 && packet.on != ~0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) static int rpi_power_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) struct device_node *fw_np;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) struct device *dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) struct rpi_power_domains *rpi_domains;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) rpi_domains = devm_kzalloc(dev, sizeof(*rpi_domains), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) if (!rpi_domains)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) rpi_domains->xlate.domains =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) devm_kcalloc(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) RPI_POWER_DOMAIN_COUNT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) sizeof(*rpi_domains->xlate.domains),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) if (!rpi_domains->xlate.domains)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) rpi_domains->xlate.num_domains = RPI_POWER_DOMAIN_COUNT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) fw_np = of_parse_phandle(pdev->dev.of_node, "firmware", 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) if (!fw_np) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) dev_err(&pdev->dev, "no firmware node\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) rpi_domains->fw = rpi_firmware_get(fw_np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) of_node_put(fw_np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) if (!rpi_domains->fw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) return -EPROBE_DEFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) rpi_domains->has_new_interface =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) rpi_has_new_domain_support(rpi_domains);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_I2C0, "I2C0");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_I2C1, "I2C1");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_I2C2, "I2C2");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_VIDEO_SCALER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) "VIDEO_SCALER");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_VPU1, "VPU1");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_HDMI, "HDMI");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) * Use the old firmware interface for USB power, so that we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) * can turn it on even if the firmware hasn't been updated.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) rpi_init_old_power_domain(rpi_domains, RPI_POWER_DOMAIN_USB,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) RPI_OLD_POWER_DOMAIN_USB, "USB");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_VEC, "VEC");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_JPEG, "JPEG");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_H264, "H264");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_V3D, "V3D");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_ISP, "ISP");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_UNICAM0, "UNICAM0");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_UNICAM1, "UNICAM1");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_CCP2RX, "CCP2RX");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_CSI2, "CSI2");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_CPI, "CPI");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_DSI0, "DSI0");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_DSI1, "DSI1");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_TRANSPOSER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) "TRANSPOSER");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_CCP2TX, "CCP2TX");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_CDP, "CDP");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_ARM, "ARM");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) of_genpd_add_provider_onecell(dev->of_node, &rpi_domains->xlate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) platform_set_drvdata(pdev, rpi_domains);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) static const struct of_device_id rpi_power_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) { .compatible = "raspberrypi,bcm2835-power", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) {},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) MODULE_DEVICE_TABLE(of, rpi_power_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) static struct platform_driver rpi_power_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) .name = "raspberrypi-power",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) .of_match_table = rpi_power_of_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) .probe = rpi_power_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) builtin_platform_driver(rpi_power_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) MODULE_AUTHOR("Alexander Aring <aar@pengutronix.de>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) MODULE_AUTHOR("Eric Anholt <eric@anholt.net>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) MODULE_DESCRIPTION("Raspberry Pi power domain driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags