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- // SPDX-License-Identifier: GPL-2.0
- /*
- * Copyright (C) 2020 Marvell International Ltd.
- */
- #include <env.h>
- #include <log.h>
- #include <i2c.h>
- #include <net.h>
- #include <dm/device.h>
- #include <linux/delay.h>
- #include <mach/cvmx-regs.h>
- #include <mach/cvmx-csr.h>
- #include <mach/cvmx-bootmem.h>
- #include <mach/octeon-model.h>
- #include <mach/octeon_eth.h>
- #include <mach/octeon_fdt.h>
- #include <mach/cvmx-helper-fdt.h>
- #include <mach/cvmx-helper-gpio.h>
- #include <mach/cvmx-fuse.h>
- #include <mach/octeon-feature.h>
- #include <mach/cvmx-qlm.h>
- #include <mach/octeon_qlm.h>
- #include <asm/gpio.h>
- #ifdef CONFIG_PCA953X
- #include <pca953x.h>
- #endif
- #ifdef CONFIG_PCF857X
- #include <pcf857x.h>
- #endif
- #ifdef CONFIG_PCA9698
- #include <pca9698.h>
- #endif
- #ifdef CONFIG_PCA9554
- #include <pca9554.h>
- #endif
- #ifdef CONFIG_PCA9555
- #include <pca9555.h>
- #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. */
- node = fdt_node_offset_by_compatible(working_fdt, -1, "cavium,octeon-7890-bgx-port");
- while (node != -FDT_ERR_NOTFOUND) {
- octeon_set_one_fdt_mac(node, &mac);
- node = fdt_node_offset_by_compatible(working_fdt, node,
- "cavium,octeon-7890-bgx-port");
- }
- }
- #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.
- */
- node = fdt_node_offset_by_compatible(working_fdt, -1, "cavium,octeon-3860-uart");
- while (node != -FDT_ERR_NOTFOUND) {
- fdt_setprop_inplace_cell(working_fdt, node, "clock-frequency", clk);
- node = fdt_node_offset_by_compatible(working_fdt, node, "cavium,octeon-3860-uart");
- }
- }
- /**
- * 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;
- }
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