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

drivers/phy/cadence/phy-cadence-torrent.c

+58 −53
Original line number Diff line number Diff line 
// 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,

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_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,

};



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
@@ -191,18 +194,19 @@ static int cdns_dp_phy_init(struct phy *phy) 
	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;
@@ -344,7 +350,7 @@ static void cdns_dp_phy_pma_cmn_rate(struct cdns_dp_phy *cdns_phy) 
	}

}



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_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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