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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 // SPDX-License-Identifier: GPL-2.0-only
/* /*
* Cadence MHDP DisplayPort SD0801 PHY driver. * Cadence Torrent SD0801 PHY driver.
* *
* Copyright 2018 Cadence Design Systems, Inc. * Copyright 2018 Cadence Design Systems, Inc.
* *
...@@ -101,7 +101,7 @@ ...@@ -101,7 +101,7 @@
#define RX_PSC_A3 0x2000c #define RX_PSC_A3 0x2000c
#define PHY_PLL_CFG 0x30038 #define PHY_PLL_CFG 0x30038
struct cdns_dp_phy { struct cdns_torrent_phy {
void __iomem *base; /* DPTX registers base */ void __iomem *base; /* DPTX registers base */
void __iomem *sd_base; /* SD0801 registers base */ void __iomem *sd_base; /* SD0801 registers base */
u32 num_lanes; /* Number of lanes to use */ u32 num_lanes; /* Number of lanes to use */
...@@ -109,36 +109,39 @@ struct cdns_dp_phy { ...@@ -109,36 +109,39 @@ struct cdns_dp_phy {
struct device *dev; struct device *dev;
}; };
static int cdns_dp_phy_init(struct phy *phy); static int cdns_torrent_dp_init(struct phy *phy);
static void cdns_dp_phy_run(struct cdns_dp_phy *cdns_phy); static void cdns_torrent_dp_run(struct cdns_torrent_phy *cdns_phy);
static void cdns_dp_phy_wait_pma_cmn_ready(struct cdns_dp_phy *cdns_phy); static
static void cdns_dp_phy_pma_cfg(struct cdns_dp_phy *cdns_phy); void cdns_torrent_dp_wait_pma_cmn_ready(struct cdns_torrent_phy *cdns_phy);
static void cdns_dp_phy_pma_cmn_cfg_25mhz(struct cdns_dp_phy *cdns_phy); static void cdns_torrent_dp_pma_cfg(struct cdns_torrent_phy *cdns_phy);
static void cdns_dp_phy_pma_lane_cfg(struct cdns_dp_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); unsigned int lane);
static void cdns_dp_phy_pma_cmn_vco_cfg_25mhz(struct cdns_dp_phy *cdns_phy); static
static void cdns_dp_phy_pma_cmn_rate(struct cdns_dp_phy *cdns_phy); void cdns_torrent_dp_pma_cmn_vco_cfg_25mhz(struct cdns_torrent_phy *cdns_phy);
static void cdns_dp_phy_write_field(struct cdns_dp_phy *cdns_phy, static void cdns_torrent_dp_pma_cmn_rate(struct cdns_torrent_phy *cdns_phy);
unsigned int offset, static void cdns_dp_phy_write_field(struct cdns_torrent_phy *cdns_phy,
unsigned char start_bit, unsigned int offset,
unsigned char num_bits, unsigned char start_bit,
unsigned int val); unsigned char num_bits,
unsigned int val);
static const struct phy_ops cdns_dp_phy_ops = {
.init = cdns_dp_phy_init, static const struct phy_ops cdns_torrent_phy_ops = {
.init = cdns_torrent_dp_init,
.owner = THIS_MODULE, .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; 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 */ writel(0x0003, cdns_phy->base + PHY_AUX_CTRL); /* enable AUX */
/* PHY PMA registers configuration function */ /* 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 * Set lines power state to A0
...@@ -185,24 +188,25 @@ static int cdns_dp_phy_init(struct phy *phy) ...@@ -185,24 +188,25 @@ static int cdns_dp_phy_init(struct phy *phy)
*/ */
lane_bits = (1 << cdns_phy->num_lanes) - 1; lane_bits = (1 << cdns_phy->num_lanes) - 1;
writel(((0xF & ~lane_bits) << 4) | (0xF & lane_bits), 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 */ /* release pma_xcvr_pllclk_en_ln_*, only for the master lane */
writel(0x0001, cdns_phy->base + PHY_PMA_XCVR_PLLCLK_EN); writel(0x0001, cdns_phy->base + PHY_PMA_XCVR_PLLCLK_EN);
/* PHY PMA registers configuration functions */ /* PHY PMA registers configuration functions */
cdns_dp_phy_pma_cmn_vco_cfg_25mhz(cdns_phy); cdns_torrent_dp_pma_cmn_vco_cfg_25mhz(cdns_phy);
cdns_dp_phy_pma_cmn_rate(cdns_phy); cdns_torrent_dp_pma_cmn_rate(cdns_phy);
/* take out of reset */ /* take out of reset */
cdns_dp_phy_write_field(cdns_phy, PHY_RESET, 8, 1, 1); cdns_dp_phy_write_field(cdns_phy, PHY_RESET, 8, 1, 1);
cdns_dp_phy_wait_pma_cmn_ready(cdns_phy); cdns_torrent_dp_wait_pma_cmn_ready(cdns_phy);
cdns_dp_phy_run(cdns_phy); cdns_torrent_dp_run(cdns_phy);
return 0; 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; unsigned int reg;
int ret; int ret;
...@@ -214,19 +218,20 @@ static void cdns_dp_phy_wait_pma_cmn_ready(struct cdns_dp_phy *cdns_phy) ...@@ -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"); "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; unsigned int i;
/* PMA common configuration */ /* 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 */ /* PMA lane configuration to deal with multi-link operation */
for (i = 0; i < cdns_phy->num_lanes; i++) 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 */ /* refclock registers - assumes 25 MHz refclock */
writel(0x0019, cdns_phy->sd_base + CMN_SSM_BIAS_TMR); 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) ...@@ -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); 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 */ /* Assumes 25 MHz refclock */
switch (cdns_phy->max_bit_rate) { 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) ...@@ -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); 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 clk_sel_val = 0;
unsigned int hsclk_div_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) ...@@ -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 */ /* PMA lane configuration to deal with multi-link operation */
for (i = 0; i < cdns_phy->num_lanes; i++) { for (i = 0; i < cdns_phy->num_lanes; i++) {
writel(hsclk_div_val, 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, static void cdns_torrent_dp_pma_lane_cfg(struct cdns_torrent_phy *cdns_phy,
unsigned int lane) unsigned int lane)
{ {
unsigned int lane_bits = (lane & LANE_MASK) << 11; 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, ...@@ -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)); 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; unsigned int read_val;
u32 write_val1 = 0; u32 write_val1 = 0;
...@@ -382,7 +388,6 @@ static void cdns_dp_phy_run(struct cdns_dp_phy *cdns_phy) ...@@ -382,7 +388,6 @@ static void cdns_dp_phy_run(struct cdns_dp_phy *cdns_phy)
ndelay(100); ndelay(100);
switch (cdns_phy->num_lanes) { switch (cdns_phy->num_lanes) {
case 1: /* lane 0 */ case 1: /* lane 0 */
write_val1 = 0x00000004; write_val1 = 0x00000004;
write_val2 = 0x00000001; write_val2 = 0x00000001;
...@@ -425,7 +430,7 @@ static void cdns_dp_phy_run(struct cdns_dp_phy *cdns_phy) ...@@ -425,7 +430,7 @@ static void cdns_dp_phy_run(struct cdns_dp_phy *cdns_phy)
ndelay(100); 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 int offset,
unsigned char start_bit, unsigned char start_bit,
unsigned char num_bits, unsigned char num_bits,
...@@ -438,10 +443,10 @@ static void cdns_dp_phy_write_field(struct cdns_dp_phy *cdns_phy, ...@@ -438,10 +443,10 @@ static void cdns_dp_phy_write_field(struct cdns_dp_phy *cdns_phy,
start_bit))), cdns_phy->base + offset); 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 resource *regs;
struct cdns_dp_phy *cdns_phy; struct cdns_torrent_phy *cdns_phy;
struct device *dev = &pdev->dev; struct device *dev = &pdev->dev;
struct phy_provider *phy_provider; struct phy_provider *phy_provider;
struct phy *phy; struct phy *phy;
...@@ -453,9 +458,9 @@ static int cdns_dp_phy_probe(struct platform_device *pdev) ...@@ -453,9 +458,9 @@ static int cdns_dp_phy_probe(struct platform_device *pdev)
cdns_phy->dev = &pdev->dev; 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)) { 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); return PTR_ERR(phy);
} }
...@@ -470,7 +475,7 @@ static int cdns_dp_phy_probe(struct platform_device *pdev) ...@@ -470,7 +475,7 @@ static int cdns_dp_phy_probe(struct platform_device *pdev)
return PTR_ERR(cdns_phy->sd_base); return PTR_ERR(cdns_phy->sd_base);
err = device_property_read_u32(dev, "num_lanes", err = device_property_read_u32(dev, "num_lanes",
&(cdns_phy->num_lanes)); &cdns_phy->num_lanes);
if (err) if (err)
cdns_phy->num_lanes = DEFAULT_NUM_LANES; cdns_phy->num_lanes = DEFAULT_NUM_LANES;
...@@ -487,7 +492,7 @@ static int cdns_dp_phy_probe(struct platform_device *pdev) ...@@ -487,7 +492,7 @@ static int cdns_dp_phy_probe(struct platform_device *pdev)
} }
err = device_property_read_u32(dev, "max_bit_rate", err = device_property_read_u32(dev, "max_bit_rate",
&(cdns_phy->max_bit_rate)); &cdns_phy->max_bit_rate);
if (err) if (err)
cdns_phy->max_bit_rate = DEFAULT_MAX_BIT_RATE; cdns_phy->max_bit_rate = DEFAULT_MAX_BIT_RATE;
...@@ -519,23 +524,23 @@ static int cdns_dp_phy_probe(struct platform_device *pdev) ...@@ -519,23 +524,23 @@ static int cdns_dp_phy_probe(struct platform_device *pdev)
return PTR_ERR_OR_ZERO(phy_provider); 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" .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 = { static struct platform_driver cdns_torrent_phy_driver = {
.probe = cdns_dp_phy_probe, .probe = cdns_torrent_phy_probe,
.driver = { .driver = {
.name = "cdns-dp-phy", .name = "cdns-torrent-phy",
.of_match_table = cdns_dp_phy_of_match, .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_AUTHOR("Cadence Design Systems, Inc.");
MODULE_DESCRIPTION("Cadence MHDP PHY driver"); MODULE_DESCRIPTION("Cadence Torrent PHY driver");
MODULE_LICENSE("GPL v2"); MODULE_LICENSE("GPL v2");
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