// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2020 Marvell International Ltd. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef CONFIG_PCA953X #include #endif #ifdef CONFIG_PCF857X #include #endif #ifdef CONFIG_PCA9698 #include #endif #ifdef CONFIG_PCA9554 #include #endif #ifdef CONFIG_PCA9555 #include #endif DECLARE_GLOBAL_DATA_PTR; #ifdef CONFIG_PCA9554 static const char * const pca9554_gpio_list[] = { "pca9554", "nxp,pca9554", "ti,pca9554", NULL, }; #endif #ifdef CONFIG_PCA9555 static const char * const pca9555_gpio_list[] = { "pca9535", "nxp,pca9535", "pca9539", "nxp,pca9539", "pca9555", "nxp,pca9555", "ti,pca9555", "max7312", "maxim,max7312", "max7313", "maxim,max7313", "tca6416", "tca9539", NULL, }; #endif #ifdef CONFIG_PCA9698 /** List of compatible strings supported by pca9698 driver */ static const char * const pca9698_gpio_list[] = { "nxp,pca9505", "pca9505", "nxp,pca9698", "pca9698", NULL, }; #endif #ifdef CONFIG_PCA953X /** List of compatible strings supported by pca953x driver */ static const char * const pca953x_gpio_list[] = { "nxp,pca9534", "nxp,pca9535", "nxp,pca9536", "nxp,pca9537", "nxp,pca9538", "nxp,pca9539", "nxp,pca953x", "nxp,pca9554", "nxp,pca9555", "nxp,pca9556", "nxp,pca9557", "nxp,pca6107", "pca9534", "pca9535", "pca9536", "pca9537", "pca9538", "pca9539", "pca953x", "pca9554", "pca9555", "pca9556", "pca9557", "max7310", "max7312", "max7313", "max7315", "pca6107", "tca6408", "tca6416", "tca9555", NULL }; #endif #ifdef CONFIG_PHY_VITESSE static const char * const vitesse_vsc8488_gpio_list[] = { "vitesse,vsc8486", "microsemi,vsc8486", "vitesse,vsc8488", "microsemi,vsc8488", "vitesse,vsc8489", "microsemi,vsc8489", "vitesse,vsc8490", "microsemi,vsc8490", NULL }; #endif /** List of compatible strings supported by Octeon driver */ static const char * const octeon_gpio_list[] = { "cavium,octeon-7890-gpio", "cavium,octeon-3860-gpio", NULL }; /** * Trims nodes from the flat device tree. * * @param fdt - pointer to working FDT, usually in gd->fdt_blob * @param fdt_key - key to preserve. All non-matching keys are removed * @param trim_name - name of property to look for. If NULL use * 'cavium,qlm-trim' * * The key should look something like device #, type where device # is a * number from 0-9 and type is a string describing the type. For QLM * operations this would typically contain the QLM number followed by * the type in the device tree, like "0,xaui", "0,sgmii", etc. This function * will trim all items in the device tree which match the device number but * have a type which does not match. For example, if a QLM has a xaui module * installed on QLM 0 and "0,xaui" is passed as a key, then all FDT nodes that * have "0,xaui" will be preserved but all others, i.e. "0,sgmii" will be * removed. * * Note that the trim_name must also match. If trim_name is NULL then it * looks for the property "cavium,qlm-trim". * * Also, when the trim_name is "cavium,qlm-trim" or NULL that the interfaces * will also be renamed based on their register values. * * For example, if a PIP interface is named "interface@W" and has the property * reg = <0> then the interface will be renamed after this function to * interface@0. * * Return: 0 for success. */ int __octeon_fdt_patch(void *fdt, const char *fdt_key, const char *trim_name) { bool rename = !trim_name || !strcmp(trim_name, "cavium,qlm-trim"); return octeon_fdt_patch_rename(fdt, fdt_key, trim_name, rename, NULL, NULL); } int octeon_fdt_patch(void *fdt, const char *fdt_key, const char *trim_name) __attribute__((weak, alias("__octeon_fdt_patch"))); /** * Trims nodes from the flat device tree. * * @param fdt - pointer to working FDT, usually in gd->fdt_blob * @param fdt_key - key to preserve. All non-matching keys are removed * @param trim_name - name of property to look for. If NULL use * 'cavium,qlm-trim' * @param rename - set to TRUE to rename interfaces. * @param callback - function to call on matched nodes. * @param cbarg - passed to callback. * * The key should look something like device #, type where device # is a * number from 0-9 and type is a string describing the type. For QLM * operations this would typically contain the QLM number followed by * the type in the device tree, like "0,xaui", "0,sgmii", etc. This function * will trim all items in the device tree which match the device number but * have a type which does not match. For example, if a QLM has a xaui module * installed on QLM 0 and "0,xaui" is passed as a key, then all FDT nodes that * have "0,xaui" will be preserved but all others, i.e. "0,sgmii" will be * removed. * * Note that the trim_name must also match. If trim_name is NULL then it * looks for the property "cavium,qlm-trim". * * Also, when the trim_name is "cavium,qlm-trim" or NULL that the interfaces * will also be renamed based on their register values. * * For example, if a PIP interface is named "interface@W" and has the property * reg = <0> then the interface will be renamed after this function to * interface@0. * * Return: 0 for success. */ int octeon_fdt_patch_rename(void *fdt, const char *fdt_key, const char *trim_name, bool rename, void (*callback)(void *fdt, int offset, void *arg), void *cbarg) __attribute__((weak, alias("__octeon_fdt_patch_rename"))); int __octeon_fdt_patch_rename(void *fdt, const char *fdt_key, const char *trim_name, bool rename, void (*callback)(void *fdt, int offset, void *arg), void *cbarg) { int fdt_key_len; int offset, next_offset; int aliases; const void *aprop; char qlm[32]; char *mode; int qlm_key_len; int rc; int cpu_node; if (!trim_name) trim_name = "cavium,qlm-trim"; strncpy(qlm, fdt_key, sizeof(qlm)); mode = qlm; strsep(&mode, ","); qlm_key_len = strlen(qlm); debug("In %s: Patching FDT header at 0x%p with key \"%s\"\n", __func__, fdt, fdt_key); if (!fdt || fdt_check_header(fdt) != 0) { printf("%s: Invalid device tree\n", __func__); return -1; } fdt_key_len = strlen(fdt_key) + 1; /* Prune out the unwanted parts based on the QLM mode. */ offset = 0; for (offset = fdt_next_node(fdt, offset, NULL); offset >= 0; offset = next_offset) { int len; const char *val; const char *val_comma; next_offset = fdt_next_node(fdt, offset, NULL); val = fdt_getprop(fdt, offset, trim_name, &len); if (!val) continue; debug("fdt found trim name %s, comparing key \"%s\"(%d) with \"%s\"(%d)\n", trim_name, fdt_key, fdt_key_len, val, len); val_comma = strchr(val, ','); if (!val_comma || (val_comma - val) != qlm_key_len) continue; if (strncmp(val, qlm, qlm_key_len) != 0) continue; /* Not this QLM. */ debug("fdt key number \"%s\" matches\n", val); if (!fdt_stringlist_contains(val, len, fdt_key)) { debug("Key \"%s\" does not match \"%s\"\n", val, fdt_key); /* This QLM, but wrong mode. Delete it. */ /* See if there's an alias that needs deleting */ val = fdt_getprop(fdt, offset, "cavium,qlm-trim-alias", NULL); if (val) { debug("Trimming alias \"%s\"\n", val); aliases = fdt_path_offset(fdt, "/aliases"); if (aliases) { aprop = fdt_getprop(fdt, aliases, val, NULL); if (aprop) { rc = fdt_nop_property(fdt, aliases, val); if (rc) { printf("Error: Could not NOP alias %s in fdt\n", val); } } else { printf("Error: could not find /aliases/%s in device tree\n", val); } } else { puts("Error: could not find /aliases in device tree\n"); } } debug("fdt trimming matching key %s\n", fdt_key); next_offset = fdt_parent_offset(fdt, offset); rc = fdt_nop_node(fdt, offset); if (rc) printf("Error %d noping node in device tree\n", rc); } } debug("%s: Starting pass 2 for key %s\n", __func__, fdt_key); /* Second pass: Rewrite names and remove key properties. */ offset = -1; for (offset = fdt_next_node(fdt, offset, NULL); offset >= 0; offset = next_offset) { int len; const char *val = fdt_getprop(fdt, offset, trim_name, &len); next_offset = fdt_next_node(fdt, offset, NULL); if (!val) continue; debug("Searching stringlist %s for %s\n", val, fdt_key); if (fdt_stringlist_contains(val, len, fdt_key)) { char new_name[64]; const char *name; const char *at; int reg; debug("Found key %s at offset 0x%x\n", fdt_key, offset); fdt_nop_property(fdt, offset, trim_name); if (rename) { name = fdt_get_name(fdt, offset, NULL); debug(" name: %s\n", name); if (!name) continue; at = strchr(name, '@'); if (!at) continue; reg = fdtdec_get_int(fdt, offset, "reg", -1); if (reg == -1) continue; debug(" reg: %d\n", reg); len = at - name + 1; debug(" len: %d\n", len); if (len + 9 >= sizeof(new_name)) continue; memcpy(new_name, name, len); cpu_node = cvmx_fdt_get_cpu_node(fdt, offset); if (cpu_node > 0) snprintf(new_name + len, sizeof(new_name) - len, "%x_%x", cpu_node, reg); else sprintf(new_name + len, "%x", reg); debug("Renaming cpu node %d %s to %s\n", cpu_node, name, new_name); fdt_set_name(fdt, offset, new_name); } if (callback) callback(fdt, offset, cbarg); /* Structure may have changed, start at the beginning. */ next_offset = 0; } } return 0; } #ifdef CONFIG_CMD_NET static void octeon_set_one_fdt_mac(int node, uint64_t *mac) { u8 mac_addr[6]; int r; mac_addr[5] = *mac & 0xff; mac_addr[4] = (*mac >> 8) & 0xff; mac_addr[3] = (*mac >> 16) & 0xff; mac_addr[2] = (*mac >> 24) & 0xff; mac_addr[1] = (*mac >> 32) & 0xff; mac_addr[0] = (*mac >> 40) & 0xff; r = fdt_setprop_inplace(working_fdt, node, "local-mac-address", mac_addr, 6); if (r == 0) *mac = *mac + 1; } static uint64_t convert_mac(const u8 mac_addr[6]) { int i; u64 mac = 0; for (i = 0; i < 6; i++) mac = (mac << 8) | mac_addr[i]; return mac; } /** * Fix up the MAC address in the flat device tree based on the MAC address * stored in ethaddr or in the board descriptor. * * NOTE: This function is weak and an alias for __octeon_fixup_fdt_mac_addr. */ void octeon_fixup_fdt_mac_addr(void) __attribute__((weak, alias("__octeon_fixup_fdt_mac_addr"))); void __octeon_fixup_fdt_mac_addr(void) { int node, pip, interface, ethernet; int i, e; u64 mac = 0; uchar mac_addr[6]; char name[20]; bool env_mac_addr_valid; const char *p; debug("%s: env ethaddr: %s\n", __func__, (p = env_get("ethaddr")) ? p : "not set"); if (eth_env_get_enetaddr("ethaddr", mac_addr)) { mac = convert_mac(mac_addr); env_mac_addr_valid = true; } else { mac = convert_mac((uint8_t *)gd->arch.mac_desc.mac_addr_base); env_mac_addr_valid = false; } debug("%s: mac_addr: %pM, board mac: %pM, env valid: %s\n", __func__, mac_addr, gd->arch.mac_desc.mac_addr_base, env_mac_addr_valid ? "true" : "false"); if (env_mac_addr_valid && memcmp(mac_addr, (void *)gd->arch.mac_desc.mac_addr_base, 6)) printf("Warning: the environment variable ethaddr is set to %pM\n" "which does not match the board descriptor MAC address %pM.\n" "Please clear the ethaddr environment variable with the command\n" "\"setenv -f ethaddr; saveenv\" or change the board MAC address with the command\n" "\"tlv_eeprom set mac %pM\" to change the board MAC address so that it matches\n" "the environment address.\n" "Note: the correct MAC address is usually the one stored in the tlv EEPROM.\n", mac_addr, gd->arch.mac_desc.mac_addr_base, mac_addr); for (i = 0; i < 2; i++) { sprintf(name, "mix%x", i); p = fdt_get_alias(working_fdt, name); if (p) { node = fdt_path_offset(working_fdt, p); if (node > 0) octeon_set_one_fdt_mac(node, &mac); } } for (i = 0; i < 2; i++) { sprintf(name, "rgmii%x", i); p = fdt_get_alias(working_fdt, name); if (p) { node = fdt_path_offset(working_fdt, p); if (node > 0) octeon_set_one_fdt_mac(node, &mac); } } pip = fdt_node_offset_by_compatible(working_fdt, -1, "cavium,octeon-3860-pip"); if (pip > 0) for (i = 0; i < 8; i++) { sprintf(name, "interface@%d", i); interface = fdt_subnode_offset(working_fdt, pip, name); if (interface <= 0) continue; for (e = 0; e < 16; e++) { sprintf(name, "ethernet@%d", e); ethernet = fdt_subnode_offset(working_fdt, interface, name); if (ethernet <= 0) continue; octeon_set_one_fdt_mac(ethernet, &mac); } } /* Assign 78XX addresses in the order they appear in the device tree. */ fdt_for_each_node_by_compatible(node, working_fdt, -1, "cavium,octeon-7890-bgx-port") octeon_set_one_fdt_mac(node, &mac); } #endif /** * This function fixes the clock-frequency in the flat device tree for the UART. * * NOTE: This function is weak and an alias for __octeon_fixup_fdt_uart. */ void octeon_fixup_fdt_uart(void) __attribute__((weak, alias("__octeon_fixup_fdt_uart"))); void __octeon_fixup_fdt_uart(void) { u32 clk; int node; clk = gd->bus_clk; /* Device trees already have good values for fast simulator * output, real boards need the correct value. */ fdt_for_each_node_by_compatible(node, working_fdt, -1, "cavium,octeon-3860-uart") fdt_setprop_inplace_cell(working_fdt, node, "clock-frequency", clk); } /** * This function fills in the /memory portion of the flat device tree. * * NOTE: This function is weak and aliased to __octeon_fixup_fdt_memory. */ void octeon_fixup_fdt_memory(void) __attribute__((weak, alias("__octeon_fixup_fdt_memory"))); void __octeon_fixup_fdt_memory(void) { u64 sizes[3], addresses[3]; u64 size_left = gd->ram_size; int num_addresses = 0; int rc; int node; size_left = gd->ram_size; sizes[num_addresses] = min_t(u64, size_left, 256 * 1024 * 1024); size_left -= sizes[num_addresses]; addresses[num_addresses] = 0; num_addresses++; if (size_left > 0) { sizes[num_addresses] = size_left; addresses[num_addresses] = 0x20000000ULL; num_addresses++; } node = fdt_path_offset(working_fdt, "/memory"); if (node < 0) node = fdt_add_subnode(working_fdt, fdt_path_offset(working_fdt, "/"), "memory"); if (node < 0) { printf("Could not add memory section to fdt: %s\n", fdt_strerror(node)); return; } rc = fdt_fixup_memory_banks(working_fdt, addresses, sizes, num_addresses); if (rc != 0) printf("%s: fdt_fixup_memory_banks returned %d when adding %d addresses\n", __func__, rc, num_addresses); } void octeon_fixup_fdt(void) __attribute__((weak, alias("__octeon_fixup_fdt"))); void __octeon_fixup_fdt(void) { if (!working_fdt) return; #ifdef CONFIG_CMD_NET octeon_fixup_fdt_mac_addr(); #endif /* CONFIG_CMD_NET */ #if !CONFIG_OCTEON_SIM_SPEED octeon_fixup_fdt_uart(); #endif octeon_fixup_fdt_memory(); } int __board_fixup_fdt(void) { /* * Nothing to do in this dummy implementation */ return 0; } int board_fixup_fdt(void) __attribute__((weak, alias("__board_fixup_fdt"))); /** * This is a helper function to find the offset of a PHY device given * an Ethernet device. * * @param[in] eth - Ethernet device to search for PHY offset * * @returns offset of phy info in device tree or -1 if not found */ //int octeon_fdt_find_phy(const struct eth_device *eth) int octeon_fdt_find_phy(const struct udevice *eth) { int aliases; const void *fdt = gd->fdt_blob; const char *pip_path; int pip; char buffer[64]; #if 0 struct octeon_eth_info *oct_eth_info = (struct octeon_eth_info *)eth->priv; #else struct octeon_eth_info *oct_eth_info = dev_get_priv(eth); #endif int interface, index; int phandle; int phy; u32 *phy_handle; aliases = fdt_path_offset(fdt, "/aliases"); if (aliases < 0) { puts("/aliases not found in device tree!\n"); return -1; } pip_path = fdt_getprop(fdt, aliases, "pip", NULL); if (!pip_path) { puts("pip not found in aliases in device tree\n"); return -1; } pip = fdt_path_offset(fdt, pip_path); if (pip < 0) { puts("pip not found in device tree\n"); return -1; } snprintf(buffer, sizeof(buffer), "interface@%d", oct_eth_info->interface); interface = fdt_subnode_offset(fdt, pip, buffer); if (interface < 0) { printf("%s: interface@%d not found in device tree for %s\n", __func__, oct_eth_info->interface, eth->name); return -1; } snprintf(buffer, sizeof(buffer), "ethernet@%x", oct_eth_info->index); index = fdt_subnode_offset(fdt, interface, buffer); if (index < 0) { printf("%s: ethernet@%x not found in device tree for %s\n", __func__, oct_eth_info->index, eth->name); return -1; } phy_handle = (uint32_t *)fdt_getprop(fdt, index, "phy-handle", NULL); if (phy_handle < 0) { printf("%s: phy-handle not found for %s\n", __func__, eth->name); return -1; } phandle = fdt32_to_cpu(*phy_handle); phy = fdt_node_offset_by_phandle(fdt, phandle); if (phy < 0) { printf("%s: phy not found for %s\n", __func__, eth->name); return -1; } return phy; } /** * This helper function returns if a node contains the specified vendor name. * * @param[in] fdt pointer to device tree blob * @param nodeoffset offset of the tree node * @param[in] vendor name of vendor to check * * returns: * 0, if the node has a compatible vendor string property * 1, if the node does not contain the vendor string property * -FDT_ERR_NOTFOUND, if the given node has no 'compatible' property * -FDT_ERR_BADOFFSET, if nodeoffset does not refer to a BEGIN_NODE tag * -FDT_ERR_BADMAGIC, * -FDT_ERR_BADVERSION, * -FDT_BADSTATE, * -FDT_ERR_BADSTRUCTURE, standard meanings */ int octeon_fdt_compat_vendor(const void *fdt, int nodeoffset, const char *vendor) { const char *strlist; const char *p; int len; int listlen; strlist = fdt_getprop(fdt, nodeoffset, "compatible", &listlen); if (!strlist) return listlen; len = strlen(vendor); debug("%s(%p, %d, %s (%p)) strlist: %s (%p), len: %d\n", __func__, fdt, nodeoffset, vendor, vendor, strlist, strlist, len); while (listlen >= len) { debug(" Comparing %d bytes of %s and %s\n", len, vendor, strlist); if ((memcmp(vendor, strlist, len) == 0) && ((strlist[len] == ',') || (strlist[len] == '\0'))) return 0; p = memchr(strlist, '\0', listlen); if (!p) return 1; /* malformed strlist.. */ listlen -= (p - strlist) + 1; strlist = p + 1; } return 1; } /** * Given a node in the device tree get the OCTEON OCX node number * * @param fdt pointer to flat device tree * @param nodeoffset node offset to get OCX node for * * Return: the Octeon OCX node number */ int octeon_fdt_get_soc_node(const void *fdt, int nodeoffset) { return 0; } /** * Given a FDT node, check if it is compatible with a list of devices * * @param[in] fdt Flat device tree pointer * @param node_offset Node offset in device tree * @param[in] strlist Array of FDT devices to check, end must be NULL * * Return: 0 if at least one device is compatible, 1 if not compatible. */ int octeon_fdt_node_check_compatible(const void *fdt, int node_offset, const char *const *strlist) { while (*strlist && **strlist) { debug("%s: Checking %s\n", __func__, *strlist); if (!fdt_node_check_compatible(fdt, node_offset, *strlist)) { debug("%s: match found\n", __func__); return 0; } strlist++; } debug("%s: No match found\n", __func__); return 1; } /** * Given a node offset, find the i2c bus number for that node * * @param[in] fdt Pointer to flat device tree * @param node_offset Node offset in device tree * * Return: i2c bus number or -1 if error */ int octeon_fdt_i2c_get_bus(const void *fdt, int node_offset) { const char *compat; const u64 addresses[] = { 0x1180000001000, 0x1180000001200 }; u64 reg; int i; int bus = -1; bool found = false; if (octeon_has_feature(OCTEON_FEATURE_CIU3)) compat = "cavium,octeon-7890-twsi"; else compat = "cavium,octeon-3860-twsi"; while (node_offset > 0 && !(found = !fdt_node_check_compatible(fdt, node_offset, compat))) { node_offset = fdt_parent_offset(fdt, node_offset); #ifdef CONFIG_OCTEON_I2C_FDT bus = i2c_get_bus_num_fdt(node_offset); if (bus >= 0) { debug("%s: Found bus 0x%x\n", __func__, bus); return bus; } #endif } if (!found) { printf("Error: node %d in device tree is not a child of the I2C bus\n", node_offset); return -1; } reg = fdtdec_get_addr(fdt, node_offset, "reg"); if (reg == FDT_ADDR_T_NONE) { printf("%s: Error: invalid reg address for TWSI bus\n", __func__); return -1; } for (i = 0; i < ARRAY_SIZE(addresses); i++) if (reg == addresses[i]) { bus = i; break; } debug("%s: bus 0x%x\n", __func__, bus); return bus; } /** * Given an offset into the fdt, output the i2c bus and address of the device * * @param[in] fdt fdt blob pointer * @param node offset in FDT of device * @param[out] bus i2c bus number of device * @param[out] addr address of device on i2c bus * * Return: 0 for success, -1 on error */ int octeon_fdt_get_i2c_bus_addr(const void *fdt, int node, int *bus, int *addr) { *bus = octeon_fdt_i2c_get_bus(fdt, fdt_parent_offset(fdt, node)); if (*bus < 0) { printf("%s: Could not get parent i2c bus\n", __func__); return -1; } *addr = fdtdec_get_int(fdt, node, "reg", -1); if (*addr < 0) return -1; return 0; } /** * Reads a GPIO pin given the node of the GPIO device in the device tree and * the pin number. * * @param[in] fdt fdt blob pointer * @param phandle phandle of GPIO node * @param pin pin number to read * * Return: 0 = pin is low, 1 = pin is high, -1 = error */ int octeon_fdt_read_gpio(const void *fdt, int phandle, int pin) { enum cvmx_gpio_type type; __maybe_unused int node; __maybe_unused int addr; __maybe_unused int bus; __maybe_unused int old_bus; int num_pins; int value; type = cvmx_fdt_get_gpio_type(fdt, phandle, &num_pins); if ((pin & 0xff) >= num_pins) { debug("%s: pin number %d out of range\n", __func__, pin); return -1; } switch (type) { #ifdef CONFIG_PCA953X case CVMX_GPIO_PIN_PCA953X: node = fdt_node_offset_by_phandle(fdt, phandle); if (octeon_fdt_get_i2c_bus_addr(fdt, node, &bus, &addr)) { printf("%s: Could not get gpio bus and/or address\n", __func__); return -1; } value = pca953x_get_val(bus, addr); if (value < 0) { printf("%s: Error reading PCA953X GPIO at 0x%x:0x%x\n", __func__, bus, addr); return -1; } value = (value >> pin) & 1; break; #endif #ifdef CONFIG_PCF857X case CVMX_GPIO_PIN_PCF857X: node = fdt_node_offset_by_phandle(fdt, phandle); if (octeon_fdt_get_i2c_bus_addr(fdt, node, &bus, &addr)) { printf("%s: Could not get gpio bus and/or address\n", __func__); return -1; } value = pcf857x_get_val(bus, addr); if (value < 0) { printf("%s: Error reading PCF857X GPIO at 0x%x:0x%x\n", __func__, bus, addr); return -1; } value = (value >> pin) & 1; break; #endif #ifdef CONFIG_PCA9698 case CVMX_GPIO_PIN_PCA9698: node = fdt_node_offset_by_phandle(fdt, phandle); if (octeon_fdt_get_i2c_bus_addr(fdt, node, &bus, &addr)) { printf("%s: Could not get gpio bus and/or address\n", __func__); return -1; } old_bus = i2c_get_bus_num(); i2c_set_bus_num(bus); value = pca9698_get_value(addr, pin); i2c_set_bus_num(old_bus); break; #endif case CVMX_GPIO_PIN_OCTEON: value = gpio_get_value(pin); break; default: printf("%s: Unknown GPIO type %d\n", __func__, type); return -1; } return value; } /** * Reads a GPIO pin given the node of the GPIO device in the device tree and * the pin number. * * @param[in] fdt fdt blob pointer * @param phandle phandle of GPIO node * @param pin pin number to read * @param val value to write (1 = high, 0 = low) * * Return: 0 = success, -1 = error */ int octeon_fdt_set_gpio(const void *fdt, int phandle, int pin, int val) { enum cvmx_gpio_type type; int node; int num_pins; __maybe_unused int addr; __maybe_unused int bus; __maybe_unused int old_bus; __maybe_unused int rc; node = fdt_node_offset_by_phandle(fdt, phandle); if (node < 0) { printf("%s: Invalid phandle\n", __func__); return -1; } type = cvmx_fdt_get_gpio_type(fdt, phandle, &num_pins); if ((pin & 0xff) >= num_pins) { debug("%s: pin number %d out of range\n", __func__, pin); return -1; } switch (type) { #ifdef CONFIG_PCA953X case CVMX_GPIO_PIN_PCA953X: if (octeon_fdt_get_i2c_bus_addr(fdt, node, &bus, &addr)) { printf("%s: Could not get gpio bus and/or address\n", __func__); return -1; } return pca953x_set_val(bus, addr, 1 << pin, val << pin); #endif #ifdef CONFIG_PCF857X case CVMX_GPIO_PIN_PCF857X: if (octeon_fdt_get_i2c_bus_addr(fdt, node, &bus, &addr)) { printf("%s: Could not get gpio bus and/or address\n", __func__); return -1; } return pcf957x_set_val(bus, addr, 1 << pin, val << pin); #endif #ifdef CONFIG_PCA9698 case CVMX_GPIO_PIN_PCA9698: if (octeon_fdt_get_i2c_bus_addr(fdt, node, &bus, &addr)) { printf("%s: Could not get gpio bus and/or address\n", __func__); return -1; } old_bus = i2c_get_bus_num(); i2c_set_bus_num(bus); rc = pca9698_set_value(addr, pin, val); i2c_set_bus_num(old_bus); return rc; #endif case CVMX_GPIO_PIN_OCTEON: return gpio_set_value(pin, val); default: printf("%s: Unknown GPIO type %d\n", __func__, type); return -1; } } /** * Given the node of a GPIO entry output the GPIO type, i2c bus and i2c * address. * * @param fdt_node node of GPIO in device tree, generally * derived from a phandle. * @param[out] type Type of GPIO detected * @param[out] i2c_bus For i2c GPIO expanders, the i2c bus number * @param[out] i2c_addr For i2c GPIO expanders, the i2c address * * Return: 0 for success, -1 for errors * * NOTE: It is up to the caller to determine the pin number. */ int octeon_fdt_get_gpio_info(int fdt_node, enum octeon_gpio_type *type, int *i2c_bus, int *i2c_addr) { const void *fdt = gd->fdt_blob; int i2c_bus_node __attribute__((unused)); *type = GPIO_TYPE_UNKNOWN; if (!octeon_fdt_node_check_compatible(fdt, fdt_node, octeon_gpio_list)) { debug("%s: Found Octeon compatible GPIO\n", __func__); *type = GPIO_TYPE_OCTEON; if (i2c_bus) *i2c_bus = -1; if (i2c_addr) *i2c_addr = -1; return 0; } #ifdef CONFIG_PCA9555 if (!octeon_fdt_node_check_compatible(fdt, fdt_node, pca9555_gpio_list)) { debug("%s: Found PCA9555 type compatible GPIO\n", __func__); *type = GPIO_TYPE_PCA9555; } #endif #ifdef CONFIG_PCA9554 if (!octeon_fdt_node_check_compatible(fdt, fdt_node, pca9554_gpio_list)) { debug("%s: Found PCA9555 type compatible GPIO\n", __func__); *type = GPIO_TYPE_PCA9554; } #endif #ifdef CONFIG_PCA953X if (!octeon_fdt_node_check_compatible(fdt, fdt_node, pca953x_gpio_list)) { debug("%s: Found PCA953x compatible GPIO", __func__); *type = GPIO_TYPE_PCA953X; } #endif #ifdef CONFIG_PCA9698 if (!octeon_fdt_node_check_compatible(fdt, fdt_node, pca9698_gpio_list)) { debug("%s: Found PCA9698 compatible GPIO", __func__); *type = GPIO_TYPE_PCA9698; } #endif #if defined(CONFIG_PCA953X) || defined(CONFIG_PCA9698) || \ defined(CONFIG_PCA9555) || defined(CONFIG_PCA9554) if (!i2c_addr || !i2c_bus) { printf("%s: Error: i2c_addr or i2c_bus is NULL\n", __func__); return -1; } *i2c_addr = fdtdec_get_int(fdt, fdt_node, "reg", -1); i2c_bus_node = fdt_parent_offset(fdt, fdt_node); if (i2c_bus_node < 0) { printf("%s: Invalid parent\n", __func__); return -1; } *i2c_bus = i2c_get_bus_num_fdt(i2c_bus_node); #endif return (*type != GPIO_TYPE_UNKNOWN) ? 0 : -1; } #ifdef CONFIG_PHY_VITESSE /** * Given a node in the flat device tree, return the matching PHY device * * @param fdt_node FDT node in device tree * * Return: pointer to PHY device or NULL if none found. */ static struct phy_device *octeon_fdt_get_phy_device_from_node(int fdt_node) { struct eth_device *dev; int i = 0; struct octeon_eth_info *ethinfo = NULL; do { dev = eth_get_dev_by_index(i++); if (!dev) return NULL; ethinfo = dev->priv; if (ethinfo->phy_offset == fdt_node) return ethinfo->phydev; } while (dev); return NULL; } #endif /** * Get the PHY data structure for the specified FDT node and output the type * * @param fdt_node FDT node of phy * @param[out] type Type of GPIO * * Return: pointer to phy device or NULL if no match found. */ struct phy_device *octeon_fdt_get_phy_gpio_info(int fdt_node, enum octeon_gpio_type *type) { #ifdef CONFIG_PHY_VITESSE struct phy_device *phydev; if (!octeon_fdt_node_check_compatible(gd->fdt_blob, fdt_node, vitesse_vsc8488_gpio_list)) { phydev = octeon_fdt_get_phy_device_from_node(fdt_node); if (phydev) { debug("%s: Found Vitesse VSC848X compatible GPIO\n", __func__); *type = GPIO_TYPE_VSC8488; return phydev; } debug("%s: Error: phy device not found!\n", __func__); return NULL; } debug("%s: No compatible Vitesse PHY type found\n", __func__); #endif return NULL; }