u-boot/arch/mips/mach-octeon/octeon_fdt.c

1034 lines
29 KiB
C
Raw Normal View History

// 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. */
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;
}