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linux/drivers/usb/dwc2/params.c

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/*
* Copyright (C) 2004-2016 Synopsys, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The names of the above-listed copyright holders may not be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any
* later version.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include "core.h"
static const struct dwc2_core_params params_hi6220 = {
.otg_cap = 2, /* No HNP/SRP capable */
.otg_ver = 0, /* 1.3 */
.dma_desc_enable = 0,
.dma_desc_fs_enable = 0,
.speed = 0, /* High Speed */
.enable_dynamic_fifo = 1,
.en_multiple_tx_fifo = 1,
.host_rx_fifo_size = 512,
.host_nperio_tx_fifo_size = 512,
.host_perio_tx_fifo_size = 512,
.max_transfer_size = 65535,
.max_packet_count = 511,
.host_channels = 16,
.phy_type = 1, /* UTMI */
.phy_utmi_width = 8,
.phy_ulpi_ddr = 0, /* Single */
.phy_ulpi_ext_vbus = 0,
.i2c_enable = 0,
.ulpi_fs_ls = 0,
.host_support_fs_ls_low_power = 0,
.host_ls_low_power_phy_clk = 0, /* 48 MHz */
.ts_dline = 0,
.reload_ctl = 0,
.ahbcfg = GAHBCFG_HBSTLEN_INCR16 <<
GAHBCFG_HBSTLEN_SHIFT,
.uframe_sched = 0,
.external_id_pin_ctl = -1,
.hibernation = -1,
};
static const struct dwc2_core_params params_bcm2835 = {
.otg_cap = 0, /* HNP/SRP capable */
.otg_ver = 0, /* 1.3 */
.dma_desc_enable = 0,
.dma_desc_fs_enable = 0,
.speed = 0, /* High Speed */
.enable_dynamic_fifo = 1,
.en_multiple_tx_fifo = 1,
.host_rx_fifo_size = 774, /* 774 DWORDs */
.host_nperio_tx_fifo_size = 256, /* 256 DWORDs */
.host_perio_tx_fifo_size = 512, /* 512 DWORDs */
.max_transfer_size = 65535,
.max_packet_count = 511,
.host_channels = 8,
.phy_type = 1, /* UTMI */
.phy_utmi_width = 8, /* 8 bits */
.phy_ulpi_ddr = 0, /* Single */
.phy_ulpi_ext_vbus = 0,
.i2c_enable = 0,
.ulpi_fs_ls = 0,
.host_support_fs_ls_low_power = 0,
.host_ls_low_power_phy_clk = 0, /* 48 MHz */
.ts_dline = 0,
.reload_ctl = 0,
.ahbcfg = 0x10,
.uframe_sched = 0,
.external_id_pin_ctl = -1,
.hibernation = -1,
};
static const struct dwc2_core_params params_rk3066 = {
.otg_cap = 2, /* non-HNP/non-SRP */
.otg_ver = -1,
.dma_desc_enable = 0,
.dma_desc_fs_enable = 0,
.speed = -1,
.enable_dynamic_fifo = 1,
.en_multiple_tx_fifo = -1,
.host_rx_fifo_size = 525, /* 525 DWORDs */
.host_nperio_tx_fifo_size = 128, /* 128 DWORDs */
.host_perio_tx_fifo_size = 256, /* 256 DWORDs */
.max_transfer_size = -1,
.max_packet_count = -1,
.host_channels = -1,
.phy_type = -1,
.phy_utmi_width = -1,
.phy_ulpi_ddr = -1,
.phy_ulpi_ext_vbus = -1,
.i2c_enable = -1,
.ulpi_fs_ls = -1,
.host_support_fs_ls_low_power = -1,
.host_ls_low_power_phy_clk = -1,
.ts_dline = -1,
.reload_ctl = -1,
.ahbcfg = GAHBCFG_HBSTLEN_INCR16 <<
GAHBCFG_HBSTLEN_SHIFT,
.uframe_sched = -1,
.external_id_pin_ctl = -1,
.hibernation = -1,
};
static const struct dwc2_core_params params_ltq = {
.otg_cap = 2, /* non-HNP/non-SRP */
.otg_ver = -1,
.dma_desc_enable = -1,
.dma_desc_fs_enable = -1,
.speed = -1,
.enable_dynamic_fifo = -1,
.en_multiple_tx_fifo = -1,
.host_rx_fifo_size = 288, /* 288 DWORDs */
.host_nperio_tx_fifo_size = 128, /* 128 DWORDs */
.host_perio_tx_fifo_size = 96, /* 96 DWORDs */
.max_transfer_size = 65535,
.max_packet_count = 511,
.host_channels = -1,
.phy_type = -1,
.phy_utmi_width = -1,
.phy_ulpi_ddr = -1,
.phy_ulpi_ext_vbus = -1,
.i2c_enable = -1,
.ulpi_fs_ls = -1,
.host_support_fs_ls_low_power = -1,
.host_ls_low_power_phy_clk = -1,
.ts_dline = -1,
.reload_ctl = -1,
.ahbcfg = GAHBCFG_HBSTLEN_INCR16 <<
GAHBCFG_HBSTLEN_SHIFT,
.uframe_sched = -1,
.external_id_pin_ctl = -1,
.hibernation = -1,
};
static const struct dwc2_core_params params_amlogic = {
.otg_cap = DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE,
.otg_ver = -1,
.dma_desc_enable = 0,
.dma_desc_fs_enable = 0,
.speed = DWC2_SPEED_PARAM_HIGH,
.enable_dynamic_fifo = 1,
.en_multiple_tx_fifo = -1,
.host_rx_fifo_size = 512,
.host_nperio_tx_fifo_size = 500,
.host_perio_tx_fifo_size = 500,
.max_transfer_size = -1,
.max_packet_count = -1,
.host_channels = 16,
.phy_type = DWC2_PHY_TYPE_PARAM_UTMI,
.phy_utmi_width = -1,
.phy_ulpi_ddr = -1,
.phy_ulpi_ext_vbus = -1,
.i2c_enable = -1,
.ulpi_fs_ls = -1,
.host_support_fs_ls_low_power = -1,
.host_ls_low_power_phy_clk = -1,
.ts_dline = -1,
.reload_ctl = 1,
.ahbcfg = GAHBCFG_HBSTLEN_INCR8 <<
GAHBCFG_HBSTLEN_SHIFT,
.uframe_sched = 0,
.external_id_pin_ctl = -1,
.hibernation = -1,
};
static const struct dwc2_core_params params_default = {
.otg_cap = -1,
.otg_ver = -1,
/*
* Disable descriptor dma mode by default as the HW can support
* it, but does not support it for SPLIT transactions.
* Disable it for FS devices as well.
*/
.dma_desc_enable = 0,
.dma_desc_fs_enable = 0,
.speed = -1,
.enable_dynamic_fifo = -1,
.en_multiple_tx_fifo = -1,
.host_rx_fifo_size = -1,
.host_nperio_tx_fifo_size = -1,
.host_perio_tx_fifo_size = -1,
.max_transfer_size = -1,
.max_packet_count = -1,
.host_channels = -1,
.phy_type = -1,
.phy_utmi_width = -1,
.phy_ulpi_ddr = -1,
.phy_ulpi_ext_vbus = -1,
.i2c_enable = -1,
.ulpi_fs_ls = -1,
.host_support_fs_ls_low_power = -1,
.host_ls_low_power_phy_clk = -1,
.ts_dline = -1,
.reload_ctl = -1,
.ahbcfg = -1,
.uframe_sched = -1,
.external_id_pin_ctl = -1,
.hibernation = -1,
};
const struct of_device_id dwc2_of_match_table[] = {
{ .compatible = "brcm,bcm2835-usb", .data = &params_bcm2835 },
{ .compatible = "hisilicon,hi6220-usb", .data = &params_hi6220 },
{ .compatible = "rockchip,rk3066-usb", .data = &params_rk3066 },
{ .compatible = "lantiq,arx100-usb", .data = &params_ltq },
{ .compatible = "lantiq,xrx200-usb", .data = &params_ltq },
{ .compatible = "snps,dwc2", .data = NULL },
{ .compatible = "samsung,s3c6400-hsotg", .data = NULL},
{ .compatible = "amlogic,meson8b-usb", .data = &params_amlogic },
{ .compatible = "amlogic,meson-gxbb-usb", .data = &params_amlogic },
{ .compatible = "amcc,dwc-otg", .data = NULL },
{},
};
MODULE_DEVICE_TABLE(of, dwc2_of_match_table);
static void dwc2_get_device_property(struct dwc2_hsotg *hsotg,
char *property, u8 size, u64 *value)
{
u8 val8;
u16 val16;
u32 val32;
switch (size) {
case 0:
*value = device_property_read_bool(hsotg->dev, property);
break;
case 1:
if (device_property_read_u8(hsotg->dev, property, &val8))
return;
*value = val8;
break;
case 2:
if (device_property_read_u16(hsotg->dev, property, &val16))
return;
*value = val16;
break;
case 4:
if (device_property_read_u32(hsotg->dev, property, &val32))
return;
*value = val32;
break;
case 8:
if (device_property_read_u64(hsotg->dev, property, value))
return;
break;
default:
/*
* The size is checked by the only function that calls
* this so this should never happen.
*/
WARN_ON(1);
return;
}
}
static void dwc2_set_core_param(void *param, u8 size, u64 value)
{
switch (size) {
case 0:
*((bool *)param) = !!value;
break;
case 1:
*((u8 *)param) = (u8)value;
break;
case 2:
*((u16 *)param) = (u16)value;
break;
case 4:
*((u32 *)param) = (u32)value;
break;
case 8:
*((u64 *)param) = (u64)value;
break;
default:
/*
* The size is checked by the only function that calls
* this so this should never happen.
*/
WARN_ON(1);
return;
}
}
/**
* dwc2_set_param() - Set a core parameter
*
* @hsotg: Programming view of the DWC_otg controller
* @param: Pointer to the parameter to set
* @lookup: True if the property should be looked up
* @property: The device property to read
* @legacy: The param value to set if @property is not available. This
* will typically be the legacy value set in the static
* params structure.
* @def: The default value
* @min: The minimum value
* @max: The maximum value
* @size: The size of the core parameter in bytes, or 0 for bool.
*
* This function looks up @property and sets the @param to that value.
* If the property doesn't exist it uses the passed-in @value. It will
* verify that the value falls between @min and @max. If it doesn't,
* it will output an error and set the parameter to either @def or,
* failing that, to @min.
*
* The @size is used to write to @param and to query the device
* properties so that this same function can be used with different
* types of parameters.
*/
static void dwc2_set_param(struct dwc2_hsotg *hsotg, void *param,
bool lookup, char *property, u64 legacy,
u64 def, u64 min, u64 max, u8 size)
{
u64 sizemax;
u64 value;
if (WARN_ON(!hsotg || !param || !property))
return;
if (WARN((size > 8) || ((size & (size - 1)) != 0),
"Invalid size %d for %s\n", size, property))
return;
dev_vdbg(hsotg->dev, "%s: Setting %s: legacy=%llu, def=%llu, min=%llu, max=%llu, size=%d\n",
__func__, property, legacy, def, min, max, size);
sizemax = (1ULL << (size * 8)) - 1;
value = legacy;
/* Override legacy settings. */
if (lookup)
dwc2_get_device_property(hsotg, property, size, &value);
/*
* While the value is not valid, try setting it to the default
* value, and failing that, set it to the minimum.
*/
while ((value < min) || (value > max)) {
/* Print an error unless the value is set to auto. */
if (value != sizemax)
dev_err(hsotg->dev, "Invalid value %llu for param %s\n",
value, property);
/*
* If we are already the default, just set it to the
* minimum.
*/
if (value == def) {
dev_vdbg(hsotg->dev, "%s: setting value to min=%llu\n",
__func__, min);
value = min;
break;
}
/* Try the default value */
dev_vdbg(hsotg->dev, "%s: setting value to default=%llu\n",
__func__, def);
value = def;
}
dev_dbg(hsotg->dev, "Setting %s to %llu\n", property, value);
dwc2_set_core_param(param, size, value);
}
/**
* dwc2_set_param_u16() - Set a u16 parameter
*
* See dwc2_set_param().
*/
static void dwc2_set_param_u16(struct dwc2_hsotg *hsotg, u16 *param,
bool lookup, char *property, u16 legacy,
u16 def, u16 min, u16 max)
{
dwc2_set_param(hsotg, param, lookup, property,
legacy, def, min, max, 2);
}
/**
* dwc2_set_param_bool() - Set a bool parameter
*
* See dwc2_set_param().
*
* Note: there is no 'legacy' argument here because there is no legacy
* source of bool params.
*/
static void dwc2_set_param_bool(struct dwc2_hsotg *hsotg, bool *param,
bool lookup, char *property,
bool def, bool min, bool max)
{
dwc2_set_param(hsotg, param, lookup, property,
def, def, min, max, 0);
}
#define DWC2_OUT_OF_BOUNDS(a, b, c) ((a) < (b) || (a) > (c))
/* Parameter access functions */
static void dwc2_set_param_otg_cap(struct dwc2_hsotg *hsotg, int val)
{
int valid = 1;
switch (val) {
case DWC2_CAP_PARAM_HNP_SRP_CAPABLE:
if (hsotg->hw_params.op_mode != GHWCFG2_OP_MODE_HNP_SRP_CAPABLE)
valid = 0;
break;
case DWC2_CAP_PARAM_SRP_ONLY_CAPABLE:
switch (hsotg->hw_params.op_mode) {
case GHWCFG2_OP_MODE_HNP_SRP_CAPABLE:
case GHWCFG2_OP_MODE_SRP_ONLY_CAPABLE:
case GHWCFG2_OP_MODE_SRP_CAPABLE_DEVICE:
case GHWCFG2_OP_MODE_SRP_CAPABLE_HOST:
break;
default:
valid = 0;
break;
}
break;
case DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE:
/* always valid */
break;
default:
valid = 0;
break;
}
if (!valid) {
if (val >= 0)
dev_err(hsotg->dev,
"%d invalid for otg_cap parameter. Check HW configuration.\n",
val);
switch (hsotg->hw_params.op_mode) {
case GHWCFG2_OP_MODE_HNP_SRP_CAPABLE:
val = DWC2_CAP_PARAM_HNP_SRP_CAPABLE;
break;
case GHWCFG2_OP_MODE_SRP_ONLY_CAPABLE:
case GHWCFG2_OP_MODE_SRP_CAPABLE_DEVICE:
case GHWCFG2_OP_MODE_SRP_CAPABLE_HOST:
val = DWC2_CAP_PARAM_SRP_ONLY_CAPABLE;
break;
default:
val = DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE;
break;
}
dev_dbg(hsotg->dev, "Setting otg_cap to %d\n", val);
}
hsotg->params.otg_cap = val;
}
static void dwc2_set_param_dma_desc_enable(struct dwc2_hsotg *hsotg, int val)
{
int valid = 1;
if (val > 0 && (hsotg->params.host_dma <= 0 ||
!hsotg->hw_params.dma_desc_enable))
valid = 0;
if (val < 0)
valid = 0;
if (!valid) {
if (val >= 0)
dev_err(hsotg->dev,
"%d invalid for dma_desc_enable parameter. Check HW configuration.\n",
val);
val = (hsotg->params.host_dma > 0 &&
hsotg->hw_params.dma_desc_enable);
dev_dbg(hsotg->dev, "Setting dma_desc_enable to %d\n", val);
}
hsotg->params.dma_desc_enable = val;
}
static void dwc2_set_param_dma_desc_fs_enable(struct dwc2_hsotg *hsotg, int val)
{
int valid = 1;
if (val > 0 && (hsotg->params.host_dma <= 0 ||
!hsotg->hw_params.dma_desc_enable))
valid = 0;
if (val < 0)
valid = 0;
if (!valid) {
if (val >= 0)
dev_err(hsotg->dev,
"%d invalid for dma_desc_fs_enable parameter. Check HW configuration.\n",
val);
val = (hsotg->params.host_dma > 0 &&
hsotg->hw_params.dma_desc_enable);
}
hsotg->params.dma_desc_fs_enable = val;
dev_dbg(hsotg->dev, "Setting dma_desc_fs_enable to %d\n", val);
}
static void
dwc2_set_param_host_support_fs_ls_low_power(struct dwc2_hsotg *hsotg,
int val)
{
if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) {
if (val >= 0) {
dev_err(hsotg->dev,
"Wrong value for host_support_fs_low_power\n");
dev_err(hsotg->dev,
"host_support_fs_low_power must be 0 or 1\n");
}
val = 0;
dev_dbg(hsotg->dev,
"Setting host_support_fs_low_power to %d\n", val);
}
hsotg->params.host_support_fs_ls_low_power = val;
}
static void dwc2_set_param_enable_dynamic_fifo(struct dwc2_hsotg *hsotg,
int val)
{
int valid = 1;
if (val > 0 && !hsotg->hw_params.enable_dynamic_fifo)
valid = 0;
if (val < 0)
valid = 0;
if (!valid) {
if (val >= 0)
dev_err(hsotg->dev,
"%d invalid for enable_dynamic_fifo parameter. Check HW configuration.\n",
val);
val = hsotg->hw_params.enable_dynamic_fifo;
dev_dbg(hsotg->dev, "Setting enable_dynamic_fifo to %d\n", val);
}
hsotg->params.enable_dynamic_fifo = val;
}
static void dwc2_set_param_host_rx_fifo_size(struct dwc2_hsotg *hsotg, int val)
{
int valid = 1;
if (val < 16 || val > hsotg->hw_params.rx_fifo_size)
valid = 0;
if (!valid) {
if (val >= 0)
dev_err(hsotg->dev,
"%d invalid for host_rx_fifo_size. Check HW configuration.\n",
val);
val = hsotg->hw_params.rx_fifo_size;
dev_dbg(hsotg->dev, "Setting host_rx_fifo_size to %d\n", val);
}
hsotg->params.host_rx_fifo_size = val;
}
static void dwc2_set_param_host_nperio_tx_fifo_size(struct dwc2_hsotg *hsotg,
int val)
{
int valid = 1;
if (val < 16 || val > hsotg->hw_params.host_nperio_tx_fifo_size)
valid = 0;
if (!valid) {
if (val >= 0)
dev_err(hsotg->dev,
"%d invalid for host_nperio_tx_fifo_size. Check HW configuration.\n",
val);
val = hsotg->hw_params.host_nperio_tx_fifo_size;
dev_dbg(hsotg->dev, "Setting host_nperio_tx_fifo_size to %d\n",
val);
}
hsotg->params.host_nperio_tx_fifo_size = val;
}
static void dwc2_set_param_host_perio_tx_fifo_size(struct dwc2_hsotg *hsotg,
int val)
{
int valid = 1;
if (val < 16 || val > hsotg->hw_params.host_perio_tx_fifo_size)
valid = 0;
if (!valid) {
if (val >= 0)
dev_err(hsotg->dev,
"%d invalid for host_perio_tx_fifo_size. Check HW configuration.\n",
val);
val = hsotg->hw_params.host_perio_tx_fifo_size;
dev_dbg(hsotg->dev, "Setting host_perio_tx_fifo_size to %d\n",
val);
}
hsotg->params.host_perio_tx_fifo_size = val;
}
static void dwc2_set_param_max_transfer_size(struct dwc2_hsotg *hsotg, int val)
{
int valid = 1;
if (val < 2047 || val > hsotg->hw_params.max_transfer_size)
valid = 0;
if (!valid) {
if (val >= 0)
dev_err(hsotg->dev,
"%d invalid for max_transfer_size. Check HW configuration.\n",
val);
val = hsotg->hw_params.max_transfer_size;
dev_dbg(hsotg->dev, "Setting max_transfer_size to %d\n", val);
}
hsotg->params.max_transfer_size = val;
}
static void dwc2_set_param_max_packet_count(struct dwc2_hsotg *hsotg, int val)
{
int valid = 1;
if (val < 15 || val > hsotg->hw_params.max_packet_count)
valid = 0;
if (!valid) {
if (val >= 0)
dev_err(hsotg->dev,
"%d invalid for max_packet_count. Check HW configuration.\n",
val);
val = hsotg->hw_params.max_packet_count;
dev_dbg(hsotg->dev, "Setting max_packet_count to %d\n", val);
}
hsotg->params.max_packet_count = val;
}
static void dwc2_set_param_host_channels(struct dwc2_hsotg *hsotg, int val)
{
int valid = 1;
if (val < 1 || val > hsotg->hw_params.host_channels)
valid = 0;
if (!valid) {
if (val >= 0)
dev_err(hsotg->dev,
"%d invalid for host_channels. Check HW configuration.\n",
val);
val = hsotg->hw_params.host_channels;
dev_dbg(hsotg->dev, "Setting host_channels to %d\n", val);
}
hsotg->params.host_channels = val;
}
static void dwc2_set_param_phy_type(struct dwc2_hsotg *hsotg, int val)
{
int valid = 0;
u32 hs_phy_type, fs_phy_type;
if (DWC2_OUT_OF_BOUNDS(val, DWC2_PHY_TYPE_PARAM_FS,
DWC2_PHY_TYPE_PARAM_ULPI)) {
if (val >= 0) {
dev_err(hsotg->dev, "Wrong value for phy_type\n");
dev_err(hsotg->dev, "phy_type must be 0, 1 or 2\n");
}
valid = 0;
}
hs_phy_type = hsotg->hw_params.hs_phy_type;
fs_phy_type = hsotg->hw_params.fs_phy_type;
if (val == DWC2_PHY_TYPE_PARAM_UTMI &&
(hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI ||
hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI_ULPI))
valid = 1;
else if (val == DWC2_PHY_TYPE_PARAM_ULPI &&
(hs_phy_type == GHWCFG2_HS_PHY_TYPE_ULPI ||
hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI_ULPI))
valid = 1;
else if (val == DWC2_PHY_TYPE_PARAM_FS &&
fs_phy_type == GHWCFG2_FS_PHY_TYPE_DEDICATED)
valid = 1;
if (!valid) {
if (val >= 0)
dev_err(hsotg->dev,
"%d invalid for phy_type. Check HW configuration.\n",
val);
val = DWC2_PHY_TYPE_PARAM_FS;
if (hs_phy_type != GHWCFG2_HS_PHY_TYPE_NOT_SUPPORTED) {
if (hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI ||
hs_phy_type == GHWCFG2_HS_PHY_TYPE_UTMI_ULPI)
val = DWC2_PHY_TYPE_PARAM_UTMI;
else
val = DWC2_PHY_TYPE_PARAM_ULPI;
}
dev_dbg(hsotg->dev, "Setting phy_type to %d\n", val);
}
hsotg->params.phy_type = val;
}
static int dwc2_get_param_phy_type(struct dwc2_hsotg *hsotg)
{
return hsotg->params.phy_type;
}
static void dwc2_set_param_speed(struct dwc2_hsotg *hsotg, int val)
{
int valid = 1;
if (DWC2_OUT_OF_BOUNDS(val, 0, 2)) {
if (val >= 0) {
dev_err(hsotg->dev, "Wrong value for speed parameter\n");
dev_err(hsotg->dev, "max_speed parameter must be 0, 1, or 2\n");
}
valid = 0;
}
if (dwc2_is_hs_iot(hsotg) &&
val == DWC2_SPEED_PARAM_LOW)
valid = 0;
if (val == DWC2_SPEED_PARAM_HIGH &&
dwc2_get_param_phy_type(hsotg) == DWC2_PHY_TYPE_PARAM_FS)
valid = 0;
if (!valid) {
if (val >= 0)
dev_err(hsotg->dev,
"%d invalid for speed parameter. Check HW configuration.\n",
val);
val = dwc2_get_param_phy_type(hsotg) == DWC2_PHY_TYPE_PARAM_FS ?
DWC2_SPEED_PARAM_FULL : DWC2_SPEED_PARAM_HIGH;
dev_dbg(hsotg->dev, "Setting speed to %d\n", val);
}
hsotg->params.speed = val;
}
static void dwc2_set_param_host_ls_low_power_phy_clk(struct dwc2_hsotg *hsotg,
int val)
{
int valid = 1;
if (DWC2_OUT_OF_BOUNDS(val, DWC2_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ,
DWC2_HOST_LS_LOW_POWER_PHY_CLK_PARAM_6MHZ)) {
if (val >= 0) {
dev_err(hsotg->dev,
"Wrong value for host_ls_low_power_phy_clk parameter\n");
dev_err(hsotg->dev,
"host_ls_low_power_phy_clk must be 0 or 1\n");
}
valid = 0;
}
if (val == DWC2_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ &&
dwc2_get_param_phy_type(hsotg) == DWC2_PHY_TYPE_PARAM_FS)
valid = 0;
if (!valid) {
if (val >= 0)
dev_err(hsotg->dev,
"%d invalid for host_ls_low_power_phy_clk. Check HW configuration.\n",
val);
val = dwc2_get_param_phy_type(hsotg) == DWC2_PHY_TYPE_PARAM_FS
? DWC2_HOST_LS_LOW_POWER_PHY_CLK_PARAM_6MHZ
: DWC2_HOST_LS_LOW_POWER_PHY_CLK_PARAM_48MHZ;
dev_dbg(hsotg->dev, "Setting host_ls_low_power_phy_clk to %d\n",
val);
}
hsotg->params.host_ls_low_power_phy_clk = val;
}
static void dwc2_set_param_phy_ulpi_ddr(struct dwc2_hsotg *hsotg, int val)
{
if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) {
if (val >= 0) {
dev_err(hsotg->dev, "Wrong value for phy_ulpi_ddr\n");
dev_err(hsotg->dev, "phy_upli_ddr must be 0 or 1\n");
}
val = 0;
dev_dbg(hsotg->dev, "Setting phy_upli_ddr to %d\n", val);
}
hsotg->params.phy_ulpi_ddr = val;
}
static void dwc2_set_param_phy_ulpi_ext_vbus(struct dwc2_hsotg *hsotg, int val)
{
if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) {
if (val >= 0) {
dev_err(hsotg->dev,
"Wrong value for phy_ulpi_ext_vbus\n");
dev_err(hsotg->dev,
"phy_ulpi_ext_vbus must be 0 or 1\n");
}
val = 0;
dev_dbg(hsotg->dev, "Setting phy_ulpi_ext_vbus to %d\n", val);
}
hsotg->params.phy_ulpi_ext_vbus = val;
}
static void dwc2_set_param_phy_utmi_width(struct dwc2_hsotg *hsotg, int val)
{
int valid = 0;
switch (hsotg->hw_params.utmi_phy_data_width) {
case GHWCFG4_UTMI_PHY_DATA_WIDTH_8:
valid = (val == 8);
break;
case GHWCFG4_UTMI_PHY_DATA_WIDTH_16:
valid = (val == 16);
break;
case GHWCFG4_UTMI_PHY_DATA_WIDTH_8_OR_16:
valid = (val == 8 || val == 16);
break;
}
if (!valid) {
if (val >= 0) {
dev_err(hsotg->dev,
"%d invalid for phy_utmi_width. Check HW configuration.\n",
val);
}
val = (hsotg->hw_params.utmi_phy_data_width ==
GHWCFG4_UTMI_PHY_DATA_WIDTH_8) ? 8 : 16;
dev_dbg(hsotg->dev, "Setting phy_utmi_width to %d\n", val);
}
hsotg->params.phy_utmi_width = val;
}
static void dwc2_set_param_ulpi_fs_ls(struct dwc2_hsotg *hsotg, int val)
{
if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) {
if (val >= 0) {
dev_err(hsotg->dev, "Wrong value for ulpi_fs_ls\n");
dev_err(hsotg->dev, "ulpi_fs_ls must be 0 or 1\n");
}
val = 0;
dev_dbg(hsotg->dev, "Setting ulpi_fs_ls to %d\n", val);
}
hsotg->params.ulpi_fs_ls = val;
}
static void dwc2_set_param_ts_dline(struct dwc2_hsotg *hsotg, int val)
{
if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) {
if (val >= 0) {
dev_err(hsotg->dev, "Wrong value for ts_dline\n");
dev_err(hsotg->dev, "ts_dline must be 0 or 1\n");
}
val = 0;
dev_dbg(hsotg->dev, "Setting ts_dline to %d\n", val);
}
hsotg->params.ts_dline = val;
}
static void dwc2_set_param_i2c_enable(struct dwc2_hsotg *hsotg, int val)
{
int valid = 1;
if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) {
if (val >= 0) {
dev_err(hsotg->dev, "Wrong value for i2c_enable\n");
dev_err(hsotg->dev, "i2c_enable must be 0 or 1\n");
}
valid = 0;
}
if (val == 1 && !(hsotg->hw_params.i2c_enable))
valid = 0;
if (!valid) {
if (val >= 0)
dev_err(hsotg->dev,
"%d invalid for i2c_enable. Check HW configuration.\n",
val);
val = hsotg->hw_params.i2c_enable;
dev_dbg(hsotg->dev, "Setting i2c_enable to %d\n", val);
}
hsotg->params.i2c_enable = val;
}
static void dwc2_set_param_en_multiple_tx_fifo(struct dwc2_hsotg *hsotg,
int val)
{
int valid = 1;
if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) {
if (val >= 0) {
dev_err(hsotg->dev,
"Wrong value for en_multiple_tx_fifo,\n");
dev_err(hsotg->dev,
"en_multiple_tx_fifo must be 0 or 1\n");
}
valid = 0;
}
if (val == 1 && !hsotg->hw_params.en_multiple_tx_fifo)
valid = 0;
if (!valid) {
if (val >= 0)
dev_err(hsotg->dev,
"%d invalid for parameter en_multiple_tx_fifo. Check HW configuration.\n",
val);
val = hsotg->hw_params.en_multiple_tx_fifo;
dev_dbg(hsotg->dev, "Setting en_multiple_tx_fifo to %d\n", val);
}
hsotg->params.en_multiple_tx_fifo = val;
}
static void dwc2_set_param_reload_ctl(struct dwc2_hsotg *hsotg, int val)
{
int valid = 1;
if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) {
if (val >= 0) {
dev_err(hsotg->dev,
"'%d' invalid for parameter reload_ctl\n", val);
dev_err(hsotg->dev, "reload_ctl must be 0 or 1\n");
}
valid = 0;
}
if (val == 1 && hsotg->hw_params.snpsid < DWC2_CORE_REV_2_92a)
valid = 0;
if (!valid) {
if (val >= 0)
dev_err(hsotg->dev,
"%d invalid for parameter reload_ctl. Check HW configuration.\n",
val);
val = hsotg->hw_params.snpsid >= DWC2_CORE_REV_2_92a;
dev_dbg(hsotg->dev, "Setting reload_ctl to %d\n", val);
}
hsotg->params.reload_ctl = val;
}
static void dwc2_set_param_ahbcfg(struct dwc2_hsotg *hsotg, int val)
{
if (val != -1)
hsotg->params.ahbcfg = val;
else
hsotg->params.ahbcfg = GAHBCFG_HBSTLEN_INCR4 <<
GAHBCFG_HBSTLEN_SHIFT;
}
static void dwc2_set_param_otg_ver(struct dwc2_hsotg *hsotg, int val)
{
if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) {
if (val >= 0) {
dev_err(hsotg->dev,
"'%d' invalid for parameter otg_ver\n", val);
dev_err(hsotg->dev,
"otg_ver must be 0 (for OTG 1.3 support) or 1 (for OTG 2.0 support)\n");
}
val = 0;
dev_dbg(hsotg->dev, "Setting otg_ver to %d\n", val);
}
hsotg->params.otg_ver = val;
}
static void dwc2_set_param_uframe_sched(struct dwc2_hsotg *hsotg, int val)
{
if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) {
if (val >= 0) {
dev_err(hsotg->dev,
"'%d' invalid for parameter uframe_sched\n",
val);
dev_err(hsotg->dev, "uframe_sched must be 0 or 1\n");
}
val = 1;
dev_dbg(hsotg->dev, "Setting uframe_sched to %d\n", val);
}
hsotg->params.uframe_sched = val;
}
static void dwc2_set_param_external_id_pin_ctl(struct dwc2_hsotg *hsotg,
int val)
{
if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) {
if (val >= 0) {
dev_err(hsotg->dev,
"'%d' invalid for parameter external_id_pin_ctl\n",
val);
dev_err(hsotg->dev, "external_id_pin_ctl must be 0 or 1\n");
}
val = 0;
dev_dbg(hsotg->dev, "Setting external_id_pin_ctl to %d\n", val);
}
hsotg->params.external_id_pin_ctl = val;
}
static void dwc2_set_param_hibernation(struct dwc2_hsotg *hsotg,
int val)
{
if (DWC2_OUT_OF_BOUNDS(val, 0, 1)) {
if (val >= 0) {
dev_err(hsotg->dev,
"'%d' invalid for parameter hibernation\n",
val);
dev_err(hsotg->dev, "hibernation must be 0 or 1\n");
}
val = 0;
dev_dbg(hsotg->dev, "Setting hibernation to %d\n", val);
}
hsotg->params.hibernation = val;
}
static void dwc2_set_param_tx_fifo_sizes(struct dwc2_hsotg *hsotg)
{
int i;
int num;
char *property = "g-tx-fifo-size";
struct dwc2_core_params *p = &hsotg->params;
memset(p->g_tx_fifo_size, 0, sizeof(p->g_tx_fifo_size));
/* Read tx fifo sizes */
num = device_property_read_u32_array(hsotg->dev, property, NULL, 0);
if (num > 0) {
device_property_read_u32_array(hsotg->dev, property,
&p->g_tx_fifo_size[1],
num);
} else {
u32 p_tx_fifo[] = DWC2_G_P_LEGACY_TX_FIFO_SIZE;
memcpy(&p->g_tx_fifo_size[1],
p_tx_fifo,
sizeof(p_tx_fifo));
num = ARRAY_SIZE(p_tx_fifo);
}
for (i = 0; i < num; i++) {
if ((i + 1) >= ARRAY_SIZE(p->g_tx_fifo_size))
break;
dev_dbg(hsotg->dev, "Setting %s[%d] to %d\n",
property, i + 1, p->g_tx_fifo_size[i + 1]);
}
}
static void dwc2_set_gadget_dma(struct dwc2_hsotg *hsotg)
{
struct dwc2_hw_params *hw = &hsotg->hw_params;
struct dwc2_core_params *p = &hsotg->params;
bool dma_capable = !(hw->arch == GHWCFG2_SLAVE_ONLY_ARCH);
/* Buffer DMA */
dwc2_set_param_bool(hsotg, &p->g_dma,
false, "gadget-dma",
true, false,
dma_capable);
/* DMA Descriptor */
dwc2_set_param_bool(hsotg, &p->g_dma_desc, false,
"gadget-dma-desc",
p->g_dma, false,
!!hw->dma_desc_enable);
}
/**
* dwc2_set_parameters() - Set all core parameters.
*
* @hsotg: Programming view of the DWC_otg controller
* @params: The parameters to set
*/
static void dwc2_set_parameters(struct dwc2_hsotg *hsotg,
const struct dwc2_core_params *params)
{
struct dwc2_hw_params *hw = &hsotg->hw_params;
struct dwc2_core_params *p = &hsotg->params;
bool dma_capable = !(hw->arch == GHWCFG2_SLAVE_ONLY_ARCH);
dwc2_set_param_otg_cap(hsotg, params->otg_cap);
if ((hsotg->dr_mode == USB_DR_MODE_HOST) ||
(hsotg->dr_mode == USB_DR_MODE_OTG)) {
dev_dbg(hsotg->dev, "Setting HOST parameters\n");
dwc2_set_param_bool(hsotg, &p->host_dma,
false, "host-dma",
true, false,
dma_capable);
}
dwc2_set_param_dma_desc_enable(hsotg, params->dma_desc_enable);
dwc2_set_param_dma_desc_fs_enable(hsotg, params->dma_desc_fs_enable);
dwc2_set_param_host_support_fs_ls_low_power(hsotg,
params->host_support_fs_ls_low_power);
dwc2_set_param_enable_dynamic_fifo(hsotg,
params->enable_dynamic_fifo);
dwc2_set_param_host_rx_fifo_size(hsotg,
params->host_rx_fifo_size);
dwc2_set_param_host_nperio_tx_fifo_size(hsotg,
params->host_nperio_tx_fifo_size);
dwc2_set_param_host_perio_tx_fifo_size(hsotg,
params->host_perio_tx_fifo_size);
dwc2_set_param_max_transfer_size(hsotg,
params->max_transfer_size);
dwc2_set_param_max_packet_count(hsotg,
params->max_packet_count);
dwc2_set_param_host_channels(hsotg, params->host_channels);
dwc2_set_param_phy_type(hsotg, params->phy_type);
dwc2_set_param_speed(hsotg, params->speed);
dwc2_set_param_host_ls_low_power_phy_clk(hsotg,
params->host_ls_low_power_phy_clk);
dwc2_set_param_phy_ulpi_ddr(hsotg, params->phy_ulpi_ddr);
dwc2_set_param_phy_ulpi_ext_vbus(hsotg,
params->phy_ulpi_ext_vbus);
dwc2_set_param_phy_utmi_width(hsotg, params->phy_utmi_width);
dwc2_set_param_ulpi_fs_ls(hsotg, params->ulpi_fs_ls);
dwc2_set_param_ts_dline(hsotg, params->ts_dline);
dwc2_set_param_i2c_enable(hsotg, params->i2c_enable);
dwc2_set_param_en_multiple_tx_fifo(hsotg,
params->en_multiple_tx_fifo);
dwc2_set_param_reload_ctl(hsotg, params->reload_ctl);
dwc2_set_param_ahbcfg(hsotg, params->ahbcfg);
dwc2_set_param_otg_ver(hsotg, params->otg_ver);
dwc2_set_param_uframe_sched(hsotg, params->uframe_sched);
dwc2_set_param_external_id_pin_ctl(hsotg, params->external_id_pin_ctl);
dwc2_set_param_hibernation(hsotg, params->hibernation);
/*
* Set devicetree-only parameters. These parameters do not
* take any values from @params.
*/
if ((hsotg->dr_mode == USB_DR_MODE_PERIPHERAL) ||
(hsotg->dr_mode == USB_DR_MODE_OTG)) {
dev_dbg(hsotg->dev, "Setting peripheral device properties\n");
dwc2_set_gadget_dma(hsotg);
/*
* The values for g_rx_fifo_size (2048) and
* g_np_tx_fifo_size (1024) come from the legacy s3c
* gadget driver. These defaults have been hard-coded
* for some time so many platforms depend on these
* values. Leave them as defaults for now and only
* auto-detect if the hardware does not support the
* default.
*/
dwc2_set_param_u16(hsotg, &p->g_rx_fifo_size,
true, "g-rx-fifo-size", 2048,
hw->rx_fifo_size,
16, hw->rx_fifo_size);
dwc2_set_param_u16(hsotg, &p->g_np_tx_fifo_size,
true, "g-np-tx-fifo-size", 1024,
hw->dev_nperio_tx_fifo_size,
16, hw->dev_nperio_tx_fifo_size);
dwc2_set_param_tx_fifo_sizes(hsotg);
}
}
/*
* Gets host hardware parameters. Forces host mode if not currently in
* host mode. Should be called immediately after a core soft reset in
* order to get the reset values.
*/
static void dwc2_get_host_hwparams(struct dwc2_hsotg *hsotg)
{
struct dwc2_hw_params *hw = &hsotg->hw_params;
u32 gnptxfsiz;
u32 hptxfsiz;
bool forced;
if (hsotg->dr_mode == USB_DR_MODE_PERIPHERAL)
return;
forced = dwc2_force_mode_if_needed(hsotg, true);
gnptxfsiz = dwc2_readl(hsotg->regs + GNPTXFSIZ);
hptxfsiz = dwc2_readl(hsotg->regs + HPTXFSIZ);
dev_dbg(hsotg->dev, "gnptxfsiz=%08x\n", gnptxfsiz);
dev_dbg(hsotg->dev, "hptxfsiz=%08x\n", hptxfsiz);
if (forced)
dwc2_clear_force_mode(hsotg);
hw->host_nperio_tx_fifo_size = (gnptxfsiz & FIFOSIZE_DEPTH_MASK) >>
FIFOSIZE_DEPTH_SHIFT;
hw->host_perio_tx_fifo_size = (hptxfsiz & FIFOSIZE_DEPTH_MASK) >>
FIFOSIZE_DEPTH_SHIFT;
}
/*
* Gets device hardware parameters. Forces device mode if not
* currently in device mode. Should be called immediately after a core
* soft reset in order to get the reset values.
*/
static void dwc2_get_dev_hwparams(struct dwc2_hsotg *hsotg)
{
struct dwc2_hw_params *hw = &hsotg->hw_params;
bool forced;
u32 gnptxfsiz;
if (hsotg->dr_mode == USB_DR_MODE_HOST)
return;
forced = dwc2_force_mode_if_needed(hsotg, false);
gnptxfsiz = dwc2_readl(hsotg->regs + GNPTXFSIZ);
dev_dbg(hsotg->dev, "gnptxfsiz=%08x\n", gnptxfsiz);
if (forced)
dwc2_clear_force_mode(hsotg);
hw->dev_nperio_tx_fifo_size = (gnptxfsiz & FIFOSIZE_DEPTH_MASK) >>
FIFOSIZE_DEPTH_SHIFT;
}
/**
* During device initialization, read various hardware configuration
* registers and interpret the contents.
*/
int dwc2_get_hwparams(struct dwc2_hsotg *hsotg)
{
struct dwc2_hw_params *hw = &hsotg->hw_params;
unsigned int width;
u32 hwcfg1, hwcfg2, hwcfg3, hwcfg4;
u32 grxfsiz;
/*
* Attempt to ensure this device is really a DWC_otg Controller.
* Read and verify the GSNPSID register contents. The value should be
* 0x45f42xxx or 0x45f43xxx, which corresponds to either "OT2" or "OT3",
* as in "OTG version 2.xx" or "OTG version 3.xx".
*/
hw->snpsid = dwc2_readl(hsotg->regs + GSNPSID);
if ((hw->snpsid & 0xfffff000) != 0x4f542000 &&
(hw->snpsid & 0xfffff000) != 0x4f543000 &&
(hw->snpsid & 0xffff0000) != 0x55310000 &&
(hw->snpsid & 0xffff0000) != 0x55320000) {
dev_err(hsotg->dev, "Bad value for GSNPSID: 0x%08x\n",
hw->snpsid);
return -ENODEV;
}
dev_dbg(hsotg->dev, "Core Release: %1x.%1x%1x%1x (snpsid=%x)\n",
hw->snpsid >> 12 & 0xf, hw->snpsid >> 8 & 0xf,
hw->snpsid >> 4 & 0xf, hw->snpsid & 0xf, hw->snpsid);
hwcfg1 = dwc2_readl(hsotg->regs + GHWCFG1);
hwcfg2 = dwc2_readl(hsotg->regs + GHWCFG2);
hwcfg3 = dwc2_readl(hsotg->regs + GHWCFG3);
hwcfg4 = dwc2_readl(hsotg->regs + GHWCFG4);
grxfsiz = dwc2_readl(hsotg->regs + GRXFSIZ);
dev_dbg(hsotg->dev, "hwcfg1=%08x\n", hwcfg1);
dev_dbg(hsotg->dev, "hwcfg2=%08x\n", hwcfg2);
dev_dbg(hsotg->dev, "hwcfg3=%08x\n", hwcfg3);
dev_dbg(hsotg->dev, "hwcfg4=%08x\n", hwcfg4);
dev_dbg(hsotg->dev, "grxfsiz=%08x\n", grxfsiz);
/*
* Host specific hardware parameters. Reading these parameters
* requires the controller to be in host mode. The mode will
* be forced, if necessary, to read these values.
*/
dwc2_get_host_hwparams(hsotg);
dwc2_get_dev_hwparams(hsotg);
/* hwcfg1 */
hw->dev_ep_dirs = hwcfg1;
/* hwcfg2 */
hw->op_mode = (hwcfg2 & GHWCFG2_OP_MODE_MASK) >>
GHWCFG2_OP_MODE_SHIFT;
hw->arch = (hwcfg2 & GHWCFG2_ARCHITECTURE_MASK) >>
GHWCFG2_ARCHITECTURE_SHIFT;
hw->enable_dynamic_fifo = !!(hwcfg2 & GHWCFG2_DYNAMIC_FIFO);
hw->host_channels = 1 + ((hwcfg2 & GHWCFG2_NUM_HOST_CHAN_MASK) >>
GHWCFG2_NUM_HOST_CHAN_SHIFT);
hw->hs_phy_type = (hwcfg2 & GHWCFG2_HS_PHY_TYPE_MASK) >>
GHWCFG2_HS_PHY_TYPE_SHIFT;
hw->fs_phy_type = (hwcfg2 & GHWCFG2_FS_PHY_TYPE_MASK) >>
GHWCFG2_FS_PHY_TYPE_SHIFT;
hw->num_dev_ep = (hwcfg2 & GHWCFG2_NUM_DEV_EP_MASK) >>
GHWCFG2_NUM_DEV_EP_SHIFT;
hw->nperio_tx_q_depth =
(hwcfg2 & GHWCFG2_NONPERIO_TX_Q_DEPTH_MASK) >>
GHWCFG2_NONPERIO_TX_Q_DEPTH_SHIFT << 1;
hw->host_perio_tx_q_depth =
(hwcfg2 & GHWCFG2_HOST_PERIO_TX_Q_DEPTH_MASK) >>
GHWCFG2_HOST_PERIO_TX_Q_DEPTH_SHIFT << 1;
hw->dev_token_q_depth =
(hwcfg2 & GHWCFG2_DEV_TOKEN_Q_DEPTH_MASK) >>
GHWCFG2_DEV_TOKEN_Q_DEPTH_SHIFT;
/* hwcfg3 */
width = (hwcfg3 & GHWCFG3_XFER_SIZE_CNTR_WIDTH_MASK) >>
GHWCFG3_XFER_SIZE_CNTR_WIDTH_SHIFT;
hw->max_transfer_size = (1 << (width + 11)) - 1;
width = (hwcfg3 & GHWCFG3_PACKET_SIZE_CNTR_WIDTH_MASK) >>
GHWCFG3_PACKET_SIZE_CNTR_WIDTH_SHIFT;
hw->max_packet_count = (1 << (width + 4)) - 1;
hw->i2c_enable = !!(hwcfg3 & GHWCFG3_I2C);
hw->total_fifo_size = (hwcfg3 & GHWCFG3_DFIFO_DEPTH_MASK) >>
GHWCFG3_DFIFO_DEPTH_SHIFT;
/* hwcfg4 */
hw->en_multiple_tx_fifo = !!(hwcfg4 & GHWCFG4_DED_FIFO_EN);
hw->num_dev_perio_in_ep = (hwcfg4 & GHWCFG4_NUM_DEV_PERIO_IN_EP_MASK) >>
GHWCFG4_NUM_DEV_PERIO_IN_EP_SHIFT;
hw->dma_desc_enable = !!(hwcfg4 & GHWCFG4_DESC_DMA);
hw->power_optimized = !!(hwcfg4 & GHWCFG4_POWER_OPTIMIZ);
hw->utmi_phy_data_width = (hwcfg4 & GHWCFG4_UTMI_PHY_DATA_WIDTH_MASK) >>
GHWCFG4_UTMI_PHY_DATA_WIDTH_SHIFT;
/* fifo sizes */
hw->rx_fifo_size = (grxfsiz & GRXFSIZ_DEPTH_MASK) >>
GRXFSIZ_DEPTH_SHIFT;
dev_dbg(hsotg->dev, "Detected values from hardware:\n");
dev_dbg(hsotg->dev, " op_mode=%d\n",
hw->op_mode);
dev_dbg(hsotg->dev, " arch=%d\n",
hw->arch);
dev_dbg(hsotg->dev, " dma_desc_enable=%d\n",
hw->dma_desc_enable);
dev_dbg(hsotg->dev, " power_optimized=%d\n",
hw->power_optimized);
dev_dbg(hsotg->dev, " i2c_enable=%d\n",
hw->i2c_enable);
dev_dbg(hsotg->dev, " hs_phy_type=%d\n",
hw->hs_phy_type);
dev_dbg(hsotg->dev, " fs_phy_type=%d\n",
hw->fs_phy_type);
dev_dbg(hsotg->dev, " utmi_phy_data_width=%d\n",
hw->utmi_phy_data_width);
dev_dbg(hsotg->dev, " num_dev_ep=%d\n",
hw->num_dev_ep);
dev_dbg(hsotg->dev, " num_dev_perio_in_ep=%d\n",
hw->num_dev_perio_in_ep);
dev_dbg(hsotg->dev, " host_channels=%d\n",
hw->host_channels);
dev_dbg(hsotg->dev, " max_transfer_size=%d\n",
hw->max_transfer_size);
dev_dbg(hsotg->dev, " max_packet_count=%d\n",
hw->max_packet_count);
dev_dbg(hsotg->dev, " nperio_tx_q_depth=0x%0x\n",
hw->nperio_tx_q_depth);
dev_dbg(hsotg->dev, " host_perio_tx_q_depth=0x%0x\n",
hw->host_perio_tx_q_depth);
dev_dbg(hsotg->dev, " dev_token_q_depth=0x%0x\n",
hw->dev_token_q_depth);
dev_dbg(hsotg->dev, " enable_dynamic_fifo=%d\n",
hw->enable_dynamic_fifo);
dev_dbg(hsotg->dev, " en_multiple_tx_fifo=%d\n",
hw->en_multiple_tx_fifo);
dev_dbg(hsotg->dev, " total_fifo_size=%d\n",
hw->total_fifo_size);
dev_dbg(hsotg->dev, " rx_fifo_size=%d\n",
hw->rx_fifo_size);
dev_dbg(hsotg->dev, " host_nperio_tx_fifo_size=%d\n",
hw->host_nperio_tx_fifo_size);
dev_dbg(hsotg->dev, " host_perio_tx_fifo_size=%d\n",
hw->host_perio_tx_fifo_size);
dev_dbg(hsotg->dev, "\n");
return 0;
}
int dwc2_init_params(struct dwc2_hsotg *hsotg)
{
const struct of_device_id *match;
struct dwc2_core_params params;
match = of_match_device(dwc2_of_match_table, hsotg->dev);
if (match && match->data)
params = *((struct dwc2_core_params *)match->data);
else
params = params_default;
if (dwc2_is_fs_iot(hsotg)) {
params.speed = DWC2_SPEED_PARAM_FULL;
params.phy_type = DWC2_PHY_TYPE_PARAM_FS;
}
dwc2_set_parameters(hsotg, &params);
return 0;
}
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