blob: f2d71b62e65807052f83a334969359563a4bfccd [file] [log] [blame]
/* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/slab.h>
#include <linux/mutex.h>
#include <linux/mfd/wcd9xxx/wcd9xxx-slimslave.h>
#include <linux/mfd/wcd9xxx/wcd9xxx_registers.h>
struct wcd9xxx_slim_sch {
u16 rx_port_ch_reg_base;
u16 port_tx_cfg_reg_base;
u16 port_rx_cfg_reg_base;
};
static struct wcd9xxx_slim_sch sh_ch;
static int wcd9xxx_alloc_slim_sh_ch(struct wcd9xxx *wcd9xxx,
u8 wcd9xxx_pgd_la, u32 cnt,
struct wcd9xxx_ch *channels, u32 path);
static int wcd9xxx_dealloc_slim_sh_ch(struct slim_device *slim,
u32 cnt, struct wcd9xxx_ch *channels);
static int wcd9xxx_configure_ports(struct wcd9xxx *wcd9xxx)
{
if (wcd9xxx->slim_slave_type == WCD9XXX_SLIM_SLAVE_ADDR_TYPE_TABLA) {
sh_ch.rx_port_ch_reg_base = 0x180;
sh_ch.port_rx_cfg_reg_base = 0x040;
sh_ch.port_tx_cfg_reg_base = 0x040;
} else {
sh_ch.rx_port_ch_reg_base =
0x180 - (TAIKO_SB_PGD_OFFSET_OF_RX_SLAVE_DEV_PORTS * 4);
sh_ch.port_rx_cfg_reg_base =
0x040 - TAIKO_SB_PGD_OFFSET_OF_RX_SLAVE_DEV_PORTS;
sh_ch.port_tx_cfg_reg_base = 0x050;
}
return 0;
}
int wcd9xxx_init_slimslave(struct wcd9xxx *wcd9xxx, u8 wcd9xxx_pgd_la,
unsigned int tx_num, unsigned int *tx_slot,
unsigned int rx_num, unsigned int *rx_slot)
{
int ret = 0;
int i;
ret = wcd9xxx_configure_ports(wcd9xxx);
if (ret) {
pr_err("%s: Failed to configure register address offset\n",
__func__);
goto err;
}
if (wcd9xxx->rx_chs) {
wcd9xxx->num_rx_port = rx_num;
for (i = 0; i < rx_num; i++) {
wcd9xxx->rx_chs[i].ch_num = rx_slot[i];
INIT_LIST_HEAD(&wcd9xxx->rx_chs[i].list);
}
ret = wcd9xxx_alloc_slim_sh_ch(wcd9xxx, wcd9xxx_pgd_la,
wcd9xxx->num_rx_port,
wcd9xxx->rx_chs,
SLIM_SINK);
if (ret) {
pr_err("%s: Failed to alloc %d rx slimbus channels\n",
__func__, wcd9xxx->num_rx_port);
kfree(wcd9xxx->rx_chs);
wcd9xxx->rx_chs = NULL;
wcd9xxx->num_rx_port = 0;
}
} else {
pr_err("Not able to allocate memory for %d slimbus rx ports\n",
wcd9xxx->num_rx_port);
}
if (wcd9xxx->tx_chs) {
wcd9xxx->num_tx_port = tx_num;
for (i = 0; i < tx_num; i++) {
wcd9xxx->tx_chs[i].ch_num = tx_slot[i];
INIT_LIST_HEAD(&wcd9xxx->tx_chs[i].list);
}
ret = wcd9xxx_alloc_slim_sh_ch(wcd9xxx, wcd9xxx_pgd_la,
wcd9xxx->num_tx_port,
wcd9xxx->tx_chs,
SLIM_SRC);
if (ret) {
pr_err("%s: Failed to alloc %d tx slimbus channels\n",
__func__, wcd9xxx->num_tx_port);
kfree(wcd9xxx->tx_chs);
wcd9xxx->tx_chs = NULL;
wcd9xxx->num_tx_port = 0;
}
} else {
pr_err("Not able to allocate memory for %d slimbus tx ports\n",
wcd9xxx->num_tx_port);
}
return 0;
err:
return ret;
}
int wcd9xxx_deinit_slimslave(struct wcd9xxx *wcd9xxx)
{
if (wcd9xxx->num_rx_port) {
wcd9xxx_dealloc_slim_sh_ch(wcd9xxx->slim,
wcd9xxx->num_rx_port,
wcd9xxx->rx_chs);
wcd9xxx->num_rx_port = 0;
}
if (wcd9xxx->num_tx_port) {
wcd9xxx_dealloc_slim_sh_ch(wcd9xxx->slim,
wcd9xxx->num_tx_port,
wcd9xxx->tx_chs);
wcd9xxx->num_tx_port = 0;
}
return 0;
}
static int wcd9xxx_alloc_slim_sh_ch(struct wcd9xxx *wcd9xxx,
u8 wcd9xxx_pgd_la, u32 cnt,
struct wcd9xxx_ch *channels, u32 path)
{
int ret = 0;
u32 ch_idx ;
/* The slimbus channel allocation seem take longer time
* so do the allocation up front to avoid delay in start of
* playback
*/
pr_debug("%s: pgd_la[%d]\n", __func__, wcd9xxx_pgd_la);
for (ch_idx = 0; ch_idx < cnt; ch_idx++) {
ret = slim_get_slaveport(wcd9xxx_pgd_la,
channels[ch_idx].port,
&channels[ch_idx].sph, path);
pr_debug("%s: pgd_la[%d] channels[%d].port[%d]\n"
"channels[%d].sph[%d] path[%d]\n",
__func__, wcd9xxx_pgd_la, ch_idx,
channels[ch_idx].port,
ch_idx, channels[ch_idx].sph, path);
if (ret < 0) {
pr_err("%s: slave port failure id[%d] ret[%d]\n",
__func__, channels[ch_idx].ch_num, ret);
goto err;
}
ret = slim_query_ch(wcd9xxx->slim,
channels[ch_idx].ch_num,
&channels[ch_idx].ch_h);
if (ret < 0) {
pr_err("%s: slim_query_ch failed ch-num[%d] ret[%d]\n",
__func__, channels[ch_idx].ch_num, ret);
goto err;
}
}
err:
return ret;
}
static int wcd9xxx_dealloc_slim_sh_ch(struct slim_device *slim,
u32 cnt, struct wcd9xxx_ch *channels)
{
int idx = 0;
int ret = 0;
/* slim_dealloc_ch */
for (idx = 0; idx < cnt; idx++) {
ret = slim_dealloc_ch(slim, channels[idx].ch_h);
if (ret < 0) {
pr_err("%s: slim_dealloc_ch fail ret[%d] ch_h[%d]\n",
__func__, ret, channels[idx].ch_h);
}
}
return ret;
}
/* Enable slimbus slave device for RX path */
int wcd9xxx_cfg_slim_sch_rx(struct wcd9xxx *wcd9xxx,
struct list_head *wcd9xxx_ch_list,
unsigned int rate, unsigned int bit_width,
u16 *grph)
{
u8 ch_cnt = 0;
u16 ch_h[SLIM_MAX_RX_PORTS] = {0};
u8 payload = 0;
u16 codec_port = 0;
int ret;
struct slim_ch prop;
struct wcd9xxx_ch *rx;
/* Configure slave interface device */
list_for_each_entry(rx, wcd9xxx_ch_list, list) {
payload |= 1 << rx->shift;
ch_h[ch_cnt] = rx->ch_h;
ch_cnt++;
pr_debug("list ch->ch_h %d ch->sph %d\n", rx->ch_h, rx->sph);
}
pr_debug("%s: ch_cnt[%d] rate=%d WATER_MARK_VAL %d\n",
__func__, ch_cnt, rate, WATER_MARK_VAL);
/* slim_define_ch api */
prop.prot = SLIM_AUTO_ISO;
prop.baser = SLIM_RATE_4000HZ;
prop.dataf = SLIM_CH_DATAF_NOT_DEFINED;
prop.auxf = SLIM_CH_AUXF_NOT_APPLICABLE;
prop.ratem = (rate/4000);
prop.sampleszbits = bit_width;
pr_debug("Before slim_define_ch:\n"
"ch_cnt %d,ch_h[0] %d ch_h[1] %d, grph %d\n",
ch_cnt, ch_h[0], ch_h[1], *grph);
ret = slim_define_ch(wcd9xxx->slim, &prop, ch_h, ch_cnt,
true, grph);
if (ret < 0) {
pr_err("%s: slim_define_ch failed ret[%d]\n",
__func__, ret);
goto err;
}
list_for_each_entry(rx, wcd9xxx_ch_list, list) {
codec_port = rx->port;
pr_debug("%s: codec_port %d rx 0x%x, payload %d\n"
"sh_ch.rx_port_ch_reg_base0 0x%x\n"
"sh_ch.port_rx_cfg_reg_base 0x%x\n",
__func__, codec_port, (u32)rx, payload,
sh_ch.rx_port_ch_reg_base,
sh_ch.port_rx_cfg_reg_base);
/* look for the valid port range and chose the
* payload accordingly
*/
/* write to interface device */
ret = wcd9xxx_interface_reg_write(wcd9xxx,
SB_PGD_RX_PORT_MULTI_CHANNEL_0(
sh_ch.rx_port_ch_reg_base, codec_port),
payload);
if (ret < 0) {
pr_err("%s:Intf-dev fail reg[%d] payload[%d] ret[%d]\n",
__func__,
SB_PGD_RX_PORT_MULTI_CHANNEL_0(
sh_ch.rx_port_ch_reg_base, codec_port),
payload, ret);
goto err;
}
/* configure the slave port for water mark and enable*/
ret = wcd9xxx_interface_reg_write(wcd9xxx,
SB_PGD_PORT_CFG_BYTE_ADDR(
sh_ch.port_rx_cfg_reg_base, codec_port),
WATER_MARK_VAL);
if (ret < 0) {
pr_err("%s:watermark set failure for port[%d] ret[%d]",
__func__, codec_port, ret);
}
ret = slim_connect_sink(wcd9xxx->slim, &rx->sph, 1, rx->ch_h);
if (ret < 0) {
pr_err("%s: slim_connect_sink failed ret[%d]\n",
__func__, ret);
goto err_close_slim_sch;
}
}
/* slim_control_ch */
ret = slim_control_ch(wcd9xxx->slim, *grph, SLIM_CH_ACTIVATE,
true);
if (ret < 0) {
pr_err("%s: slim_control_ch failed ret[%d]\n",
__func__, ret);
goto err_close_slim_sch;
}
return 0;
err_close_slim_sch:
/* release all acquired handles */
wcd9xxx_close_slim_sch_rx(wcd9xxx, wcd9xxx_ch_list, *grph);
err:
return ret;
}
EXPORT_SYMBOL_GPL(wcd9xxx_cfg_slim_sch_rx);
/* Enable slimbus slave device for RX path */
int wcd9xxx_cfg_slim_sch_tx(struct wcd9xxx *wcd9xxx,
struct list_head *wcd9xxx_ch_list,
unsigned int rate, unsigned int bit_width,
u16 *grph)
{
u16 ch_cnt = 0;
u16 payload = 0;
u16 ch_h[SLIM_MAX_TX_PORTS] = {0};
u16 codec_port;
int ret = 0;
struct wcd9xxx_ch *tx;
struct slim_ch prop;
list_for_each_entry(tx, wcd9xxx_ch_list, list) {
payload |= 1 << tx->shift;
ch_h[ch_cnt] = tx->ch_h;
ch_cnt++;
}
/* slim_define_ch api */
prop.prot = SLIM_AUTO_ISO;
prop.baser = SLIM_RATE_4000HZ;
prop.dataf = SLIM_CH_DATAF_NOT_DEFINED;
prop.auxf = SLIM_CH_AUXF_NOT_APPLICABLE;
prop.ratem = (rate/4000);
prop.sampleszbits = 16;
ret = slim_define_ch(wcd9xxx->slim, &prop, ch_h, ch_cnt,
true, grph);
if (ret < 0) {
pr_err("%s: slim_define_ch failed ret[%d]\n",
__func__, ret);
goto err;
}
pr_debug("%s: ch_cnt[%d] rate[%d]\n", __func__, ch_cnt, rate);
list_for_each_entry(tx, wcd9xxx_ch_list, list) {
codec_port = tx->port;
pr_debug("%s: codec_port %d rx 0x%x, payload 0x%x\n",
__func__, codec_port, (u32)tx, payload);
/* write to interface device */
ret = wcd9xxx_interface_reg_write(wcd9xxx,
SB_PGD_TX_PORT_MULTI_CHANNEL_0(codec_port),
payload & 0x00FF);
if (ret < 0) {
pr_err("%s:Intf-dev fail reg[%d] payload[%d] ret[%d]\n",
__func__,
SB_PGD_TX_PORT_MULTI_CHANNEL_0(codec_port),
payload, ret);
goto err;
}
/* ports 8,9 */
ret = wcd9xxx_interface_reg_write(wcd9xxx,
SB_PGD_TX_PORT_MULTI_CHANNEL_1(codec_port),
(payload & 0xFF00)>>8);
if (ret < 0) {
pr_err("%s:Intf-dev fail reg[%d] payload[%d] ret[%d]\n",
__func__,
SB_PGD_TX_PORT_MULTI_CHANNEL_1(codec_port),
payload, ret);
goto err;
}
/* configure the slave port for water mark and enable*/
ret = wcd9xxx_interface_reg_write(wcd9xxx,
SB_PGD_PORT_CFG_BYTE_ADDR(
sh_ch.port_tx_cfg_reg_base, codec_port),
WATER_MARK_VAL);
if (ret < 0) {
pr_err("%s:watermark set failure for port[%d] ret[%d]",
__func__, codec_port, ret);
}
ret = slim_connect_src(wcd9xxx->slim, tx->sph, tx->ch_h);
if (ret < 0) {
pr_err("%s: slim_connect_src failed ret[%d]\n",
__func__, ret);
goto err;
}
}
/* slim_control_ch */
ret = slim_control_ch(wcd9xxx->slim, *grph, SLIM_CH_ACTIVATE,
true);
if (ret < 0) {
pr_err("%s: slim_control_ch failed ret[%d]\n",
__func__, ret);
goto err;
}
return 0;
err:
/* release all acquired handles */
wcd9xxx_close_slim_sch_tx(wcd9xxx, wcd9xxx_ch_list, *grph);
return ret;
}
EXPORT_SYMBOL_GPL(wcd9xxx_cfg_slim_sch_tx);
int wcd9xxx_close_slim_sch_rx(struct wcd9xxx *wcd9xxx,
struct list_head *wcd9xxx_ch_list, u16 grph)
{
u32 sph[SLIM_MAX_RX_PORTS] = {0};
int ch_cnt = 0 ;
int ret = 0;
struct wcd9xxx_ch *rx;
list_for_each_entry(rx, wcd9xxx_ch_list, list)
sph[ch_cnt++] = rx->sph;
pr_debug("%s ch_cht %d, sph[0] %d sph[1] %d\n", __func__, ch_cnt,
sph[0], sph[1]);
/* slim_control_ch (REMOVE) */
pr_debug("%s before slim_control_ch grph %d\n", __func__, grph);
ret = slim_control_ch(wcd9xxx->slim, grph, SLIM_CH_REMOVE, true);
if (ret < 0) {
pr_err("%s: slim_control_ch failed ret[%d]\n", __func__, ret);
goto err;
}
err:
return ret;
}
EXPORT_SYMBOL_GPL(wcd9xxx_close_slim_sch_rx);
int wcd9xxx_close_slim_sch_tx(struct wcd9xxx *wcd9xxx,
struct list_head *wcd9xxx_ch_list,
u16 grph)
{
u32 sph[SLIM_MAX_TX_PORTS] = {0};
int ret = 0;
int ch_cnt = 0 ;
struct wcd9xxx_ch *tx;
pr_debug("%s\n", __func__);
list_for_each_entry(tx, wcd9xxx_ch_list, list)
sph[ch_cnt++] = tx->sph;
pr_debug("%s ch_cht %d, sph[0] %d sph[1] %d\n",
__func__, ch_cnt, sph[0], sph[1]);
/* slim_control_ch (REMOVE) */
ret = slim_control_ch(wcd9xxx->slim, grph, SLIM_CH_REMOVE, true);
if (ret < 0) {
pr_err("%s: slim_control_ch failed ret[%d]\n",
__func__, ret);
goto err;
}
err:
return ret;
}
EXPORT_SYMBOL_GPL(wcd9xxx_close_slim_sch_tx);
int wcd9xxx_get_slave_port(unsigned int ch_num)
{
int ret = 0;
ret = (ch_num - BASE_CH_NUM);
pr_debug("%s: ch_num[%d] slave port[%d]\n", __func__, ch_num, ret);
if (ret < 0) {
pr_err("%s: Error:- Invalid slave port found = %d\n",
__func__, ret);
return -EINVAL;
}
return ret;
}
EXPORT_SYMBOL_GPL(wcd9xxx_get_slave_port);
int wcd9xxx_disconnect_port(struct wcd9xxx *wcd9xxx,
struct list_head *wcd9xxx_ch_list, u16 grph)
{
u32 sph[SLIM_MAX_TX_PORTS + SLIM_MAX_RX_PORTS] = {0};
int ch_cnt = 0 ;
int ret = 0;
struct wcd9xxx_ch *slim_ch;
list_for_each_entry(slim_ch, wcd9xxx_ch_list, list)
sph[ch_cnt++] = slim_ch->sph;
/* slim_disconnect_port */
ret = slim_disconnect_ports(wcd9xxx->slim, sph, ch_cnt);
if (ret < 0) {
pr_err("%s: slim_disconnect_ports failed ret[%d]\n",
__func__, ret);
}
return ret;
}
EXPORT_SYMBOL_GPL(wcd9xxx_disconnect_port);
/* This function is called with mutex acquired */
int wcd9xxx_rx_vport_validation(u32 port_id,
struct list_head *codec_dai_list)
{
struct wcd9xxx_ch *ch;
int ret = 0;
pr_debug("%s: port_id %u\n", __func__, port_id);
list_for_each_entry(ch,
codec_dai_list, list) {
pr_debug("%s: ch->port %u\n", __func__, ch->port);
if (ch->port == port_id) {
ret = -EINVAL;
break;
}
}
return ret;
}
EXPORT_SYMBOL_GPL(wcd9xxx_rx_vport_validation);
/* This function is called with mutex acquired */
int wcd9xxx_tx_vport_validation(u32 vtable, u32 port_id,
struct wcd9xxx_codec_dai_data *codec_dai)
{
struct wcd9xxx_ch *ch;
int ret = 0;
u32 index;
u32 size = sizeof(vtable) * 8;
pr_debug("%s: vtable 0x%x port_id %u size %d\n", __func__,
vtable, port_id, size);
for_each_set_bit(index, (unsigned long *)&vtable, size) {
list_for_each_entry(ch,
&codec_dai[index].wcd9xxx_ch_list,
list) {
pr_debug("%s: index %u ch->port %u vtable 0x%x\n",
__func__, index, ch->port, vtable);
if (ch->port == port_id) {
pr_err("%s: TX%u is used by AIF%u_CAP Mixer\n",
__func__, port_id + 1,
(index + 1)/2);
ret = -EINVAL;
break;
}
}
if (ret)
break;
}
return ret;
}
EXPORT_SYMBOL_GPL(wcd9xxx_tx_vport_validation);