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Commit 92e9ccc6 authored by Swapnil Jakhade's avatar Swapnil Jakhade Committed by Kishon Vijay Abraham I
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phy: cadence-torrent: Adopt Torrent nomenclature 

- Change private data struct cdns_dp_phy to cdns_torrent_phy
- Change module description and registration accordingly
- Generic torrent functions have prefix cdns_torrent_phy_*
- Functions specific to Torrent phy for DisplayPort are prefixed as
  cdns_torrent_dp_*
Signed-off-by: default avatarSwapnil Jakhade <sjakhade@cadence.com>
Signed-off-by: default avatarYuti Amonkar <yamonkar@cadence.com>
Signed-off-by: default avatarKishon Vijay Abraham I <kishon@ti.com>
parent c589e701
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Showing with 58 additions and 53 deletions
drivers/phy/cadence/phy-cadence-torrent.c
View file @ 92e9ccc6
// SPDX-License-Identifier: GPL-2.0-only
/*
* Cadence MHDP DisplayPort SD0801 PHY driver.
* Cadence Torrent SD0801 PHY driver.
*
* Copyright 2018 Cadence Design Systems, Inc.
*
......@@ -101,7 +101,7 @@
#define RX_PSC_A3 0x2000c
#define PHY_PLL_CFG 0x30038
struct cdns_dp_phy {
struct cdns_torrent_phy {
void __iomem *base; /* DPTX registers base */
void __iomem *sd_base; /* SD0801 registers base */
u32 num_lanes; /* Number of lanes to use */
......@@ -109,36 +109,39 @@ struct cdns_dp_phy {
struct device *dev;
};
static int cdns_dp_phy_init(struct phy *phy);
static void cdns_dp_phy_run(struct cdns_dp_phy *cdns_phy);
static void cdns_dp_phy_wait_pma_cmn_ready(struct cdns_dp_phy *cdns_phy);
static void cdns_dp_phy_pma_cfg(struct cdns_dp_phy *cdns_phy);
static void cdns_dp_phy_pma_cmn_cfg_25mhz(struct cdns_dp_phy *cdns_phy);
static void cdns_dp_phy_pma_lane_cfg(struct cdns_dp_phy *cdns_phy,
static int cdns_torrent_dp_init(struct phy *phy);
static void cdns_torrent_dp_run(struct cdns_torrent_phy *cdns_phy);
static
void cdns_torrent_dp_wait_pma_cmn_ready(struct cdns_torrent_phy *cdns_phy);
static void cdns_torrent_dp_pma_cfg(struct cdns_torrent_phy *cdns_phy);
static
void cdns_torrent_dp_pma_cmn_cfg_25mhz(struct cdns_torrent_phy *cdns_phy);
static void cdns_torrent_dp_pma_lane_cfg(struct cdns_torrent_phy *cdns_phy,
unsigned int lane);
static void cdns_dp_phy_pma_cmn_vco_cfg_25mhz(struct cdns_dp_phy *cdns_phy);
static void cdns_dp_phy_pma_cmn_rate(struct cdns_dp_phy *cdns_phy);
static void cdns_dp_phy_write_field(struct cdns_dp_phy *cdns_phy,
unsigned int offset,
unsigned char start_bit,
unsigned char num_bits,
unsigned int val);
static const struct phy_ops cdns_dp_phy_ops = {
.init = cdns_dp_phy_init,
static
void cdns_torrent_dp_pma_cmn_vco_cfg_25mhz(struct cdns_torrent_phy *cdns_phy);
static void cdns_torrent_dp_pma_cmn_rate(struct cdns_torrent_phy *cdns_phy);
static void cdns_dp_phy_write_field(struct cdns_torrent_phy *cdns_phy,
unsigned int offset,
unsigned char start_bit,
unsigned char num_bits,
unsigned int val);
static const struct phy_ops cdns_torrent_phy_ops = {
.init = cdns_torrent_dp_init,
.owner = THIS_MODULE,
};
static int cdns_dp_phy_init(struct phy *phy)
static int cdns_torrent_dp_init(struct phy *phy)
{
unsigned char lane_bits;
struct cdns_dp_phy *cdns_phy = phy_get_drvdata(phy);
struct cdns_torrent_phy *cdns_phy = phy_get_drvdata(phy);
writel(0x0003, cdns_phy->base + PHY_AUX_CTRL); /* enable AUX */
/* PHY PMA registers configuration function */
cdns_dp_phy_pma_cfg(cdns_phy);
cdns_torrent_dp_pma_cfg(cdns_phy);
/*
* Set lines power state to A0
......@@ -185,24 +188,25 @@ static int cdns_dp_phy_init(struct phy *phy)
*/
lane_bits = (1 << cdns_phy->num_lanes) - 1;
writel(((0xF & ~lane_bits) << 4) | (0xF & lane_bits),
cdns_phy->base + PHY_RESET);
cdns_phy->base + PHY_RESET);
/* release pma_xcvr_pllclk_en_ln_*, only for the master lane */
writel(0x0001, cdns_phy->base + PHY_PMA_XCVR_PLLCLK_EN);
/* PHY PMA registers configuration functions */
cdns_dp_phy_pma_cmn_vco_cfg_25mhz(cdns_phy);
cdns_dp_phy_pma_cmn_rate(cdns_phy);
cdns_torrent_dp_pma_cmn_vco_cfg_25mhz(cdns_phy);
cdns_torrent_dp_pma_cmn_rate(cdns_phy);
/* take out of reset */
cdns_dp_phy_write_field(cdns_phy, PHY_RESET, 8, 1, 1);
cdns_dp_phy_wait_pma_cmn_ready(cdns_phy);
cdns_dp_phy_run(cdns_phy);
cdns_torrent_dp_wait_pma_cmn_ready(cdns_phy);
cdns_torrent_dp_run(cdns_phy);
return 0;
}
static void cdns_dp_phy_wait_pma_cmn_ready(struct cdns_dp_phy *cdns_phy)
static
void cdns_torrent_dp_wait_pma_cmn_ready(struct cdns_torrent_phy *cdns_phy)
{
unsigned int reg;
int ret;
......@@ -214,19 +218,20 @@ static void cdns_dp_phy_wait_pma_cmn_ready(struct cdns_dp_phy *cdns_phy)
"timeout waiting for PMA common ready\n");
}
static void cdns_dp_phy_pma_cfg(struct cdns_dp_phy *cdns_phy)
static void cdns_torrent_dp_pma_cfg(struct cdns_torrent_phy *cdns_phy)
{
unsigned int i;
/* PMA common configuration */
cdns_dp_phy_pma_cmn_cfg_25mhz(cdns_phy);
cdns_torrent_dp_pma_cmn_cfg_25mhz(cdns_phy);
/* PMA lane configuration to deal with multi-link operation */
for (i = 0; i < cdns_phy->num_lanes; i++)
cdns_dp_phy_pma_lane_cfg(cdns_phy, i);
cdns_torrent_dp_pma_lane_cfg(cdns_phy, i);
}
static void cdns_dp_phy_pma_cmn_cfg_25mhz(struct cdns_dp_phy *cdns_phy)
static
void cdns_torrent_dp_pma_cmn_cfg_25mhz(struct cdns_torrent_phy *cdns_phy)
{
/* refclock registers - assumes 25 MHz refclock */
writel(0x0019, cdns_phy->sd_base + CMN_SSM_BIAS_TMR);
......@@ -259,7 +264,8 @@ static void cdns_dp_phy_pma_cmn_cfg_25mhz(struct cdns_dp_phy *cdns_phy)
writel(0x0318, cdns_phy->sd_base + CMN_PLL0_VCOCAL_REFTIM_START);
}
static void cdns_dp_phy_pma_cmn_vco_cfg_25mhz(struct cdns_dp_phy *cdns_phy)
static
void cdns_torrent_dp_pma_cmn_vco_cfg_25mhz(struct cdns_torrent_phy *cdns_phy)
{
/* Assumes 25 MHz refclock */
switch (cdns_phy->max_bit_rate) {
......@@ -300,7 +306,7 @@ static void cdns_dp_phy_pma_cmn_vco_cfg_25mhz(struct cdns_dp_phy *cdns_phy)
writel(0x0318, cdns_phy->sd_base + CMN_PLL0_VCOCAL_PLLCNT_START);
}
static void cdns_dp_phy_pma_cmn_rate(struct cdns_dp_phy *cdns_phy)
static void cdns_torrent_dp_pma_cmn_rate(struct cdns_torrent_phy *cdns_phy)
{
unsigned int clk_sel_val = 0;
unsigned int hsclk_div_val = 0;
......@@ -340,12 +346,12 @@ static void cdns_dp_phy_pma_cmn_rate(struct cdns_dp_phy *cdns_phy)
/* PMA lane configuration to deal with multi-link operation */
for (i = 0; i < cdns_phy->num_lanes; i++) {
writel(hsclk_div_val,
cdns_phy->sd_base + (XCVR_DIAG_HSCLK_DIV | (i<<11)));
cdns_phy->sd_base + (XCVR_DIAG_HSCLK_DIV | (i << 11)));
}
}
static void cdns_dp_phy_pma_lane_cfg(struct cdns_dp_phy *cdns_phy,
unsigned int lane)
static void cdns_torrent_dp_pma_lane_cfg(struct cdns_torrent_phy *cdns_phy,
unsigned int lane)
{
unsigned int lane_bits = (lane & LANE_MASK) << 11;
......@@ -361,7 +367,7 @@ static void cdns_dp_phy_pma_lane_cfg(struct cdns_dp_phy *cdns_phy,
writel(0x0000, cdns_phy->sd_base + (XCVR_DIAG_HSCLK_SEL | lane_bits));
}
static void cdns_dp_phy_run(struct cdns_dp_phy *cdns_phy)
static void cdns_torrent_dp_run(struct cdns_torrent_phy *cdns_phy)
{
unsigned int read_val;
u32 write_val1 = 0;
......@@ -382,7 +388,6 @@ static void cdns_dp_phy_run(struct cdns_dp_phy *cdns_phy)
ndelay(100);
switch (cdns_phy->num_lanes) {
case 1: /* lane 0 */
write_val1 = 0x00000004;
write_val2 = 0x00000001;
......@@ -425,7 +430,7 @@ static void cdns_dp_phy_run(struct cdns_dp_phy *cdns_phy)
ndelay(100);
}
static void cdns_dp_phy_write_field(struct cdns_dp_phy *cdns_phy,
static void cdns_dp_phy_write_field(struct cdns_torrent_phy *cdns_phy,
unsigned int offset,
unsigned char start_bit,
unsigned char num_bits,
......@@ -438,10 +443,10 @@ static void cdns_dp_phy_write_field(struct cdns_dp_phy *cdns_phy,
start_bit))), cdns_phy->base + offset);
}
static int cdns_dp_phy_probe(struct platform_device *pdev)
static int cdns_torrent_phy_probe(struct platform_device *pdev)
{
struct resource *regs;
struct cdns_dp_phy *cdns_phy;
struct cdns_torrent_phy *cdns_phy;
struct device *dev = &pdev->dev;
struct phy_provider *phy_provider;
struct phy *phy;
......@@ -453,9 +458,9 @@ static int cdns_dp_phy_probe(struct platform_device *pdev)
cdns_phy->dev = &pdev->dev;
phy = devm_phy_create(dev, NULL, &cdns_dp_phy_ops);
phy = devm_phy_create(dev, NULL, &cdns_torrent_phy_ops);
if (IS_ERR(phy)) {
dev_err(dev, "failed to create DisplayPort PHY\n");
dev_err(dev, "failed to create Torrent PHY\n");
return PTR_ERR(phy);
}
......@@ -470,7 +475,7 @@ static int cdns_dp_phy_probe(struct platform_device *pdev)
return PTR_ERR(cdns_phy->sd_base);
err = device_property_read_u32(dev, "num_lanes",
&(cdns_phy->num_lanes));
&cdns_phy->num_lanes);
if (err)
cdns_phy->num_lanes = DEFAULT_NUM_LANES;
......@@ -487,7 +492,7 @@ static int cdns_dp_phy_probe(struct platform_device *pdev)
}
err = device_property_read_u32(dev, "max_bit_rate",
&(cdns_phy->max_bit_rate));
&cdns_phy->max_bit_rate);
if (err)
cdns_phy->max_bit_rate = DEFAULT_MAX_BIT_RATE;
......@@ -519,23 +524,23 @@ static int cdns_dp_phy_probe(struct platform_device *pdev)
return PTR_ERR_OR_ZERO(phy_provider);
}
static const struct of_device_id cdns_dp_phy_of_match[] = {
static const struct of_device_id cdns_torrent_phy_of_match[] = {
{
.compatible = "cdns,torrent-phy"
},
{}
};
MODULE_DEVICE_TABLE(of, cdns_dp_phy_of_match);
MODULE_DEVICE_TABLE(of, cdns_torrent_phy_of_match);
static struct platform_driver cdns_dp_phy_driver = {
.probe = cdns_dp_phy_probe,
static struct platform_driver cdns_torrent_phy_driver = {
.probe = cdns_torrent_phy_probe,
.driver = {
.name = "cdns-dp-phy",
.of_match_table = cdns_dp_phy_of_match,
.name = "cdns-torrent-phy",
.of_match_table = cdns_torrent_phy_of_match,
}
};
module_platform_driver(cdns_dp_phy_driver);
module_platform_driver(cdns_torrent_phy_driver);
MODULE_AUTHOR("Cadence Design Systems, Inc.");
MODULE_DESCRIPTION("Cadence MHDP PHY driver");
MODULE_DESCRIPTION("Cadence Torrent PHY driver");
MODULE_LICENSE("GPL v2");
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