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Message-Id: <1473857993-6386-2-git-send-email-peter.griffin@linaro.org>
Date: Wed, 14 Sep 2016 13:59:35 +0100
From: Peter Griffin <peter.griffin@...aro.org>
To: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
kernel@...inux.com, patrice.chotard@...com
Cc: peter.griffin@...aro.org, lee.jones@...aro.org,
devicetree@...r.kernel.org
Subject: [PATCH 01/19] phy: phy-miphy365x: Remove miphy365 driver and dt binding documentation.
This phy is only used on STiH415/6 based silicon, and support for
these SoC's is being removed from the kernel.
Signed-off-by: Peter Griffin <peter.griffin@...aro.org>
To: kishon@...com
---
.../devicetree/bindings/phy/phy-miphy365x.txt | 77 ---
drivers/phy/Kconfig | 10 -
drivers/phy/Makefile | 1 -
drivers/phy/phy-miphy365x.c | 625 ---------------------
4 files changed, 713 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/phy/phy-miphy365x.txt
delete mode 100644 drivers/phy/phy-miphy365x.c
diff --git a/Documentation/devicetree/bindings/phy/phy-miphy365x.txt b/Documentation/devicetree/bindings/phy/phy-miphy365x.txt
deleted file mode 100644
index 8772900..0000000
--- a/Documentation/devicetree/bindings/phy/phy-miphy365x.txt
+++ /dev/null
@@ -1,77 +0,0 @@
-STMicroelectronics STi MIPHY365x PHY binding
-============================================
-
-This binding describes a miphy device that is used to control PHY hardware
-for SATA and PCIe.
-
-Required properties (controller (parent) node):
-- compatible : Should be "st,miphy365x-phy"
-- st,syscfg : Phandle / integer array property. Phandle of sysconfig group
- containing the miphy registers and integer array should contain
- an entry for each port sub-node, specifying the control
- register offset inside the sysconfig group.
-
-Required nodes : A sub-node is required for each channel the controller
- provides. Address range information including the usual
- 'reg' and 'reg-names' properties are used inside these
- nodes to describe the controller's topology. These nodes
- are translated by the driver's .xlate() function.
-
-Required properties (port (child) node):
-- #phy-cells : Should be 1 (See second example)
- Cell after port phandle is device type from:
- - PHY_TYPE_SATA
- - PHY_TYPE_PCI
-- reg : Address and length of register sets for each device in
- "reg-names"
-- reg-names : The names of the register addresses corresponding to the
- registers filled in "reg":
- - sata: For SATA devices
- - pcie: For PCIe devices
-
-Optional properties (port (child) node):
-- st,sata-gen : Generation of locally attached SATA IP. Expected values
- are {1,2,3). If not supplied generation 1 hardware will
- be expected
-- st,pcie-tx-pol-inv : Bool property to invert the polarity PCIe Tx (Txn/Txp)
-- st,sata-tx-pol-inv : Bool property to invert the polarity SATA Tx (Txn/Txp)
-
-Example:
-
- miphy365x_phy: miphy365x@...82000 {
- compatible = "st,miphy365x-phy";
- st,syscfg = <&syscfg_rear 0x824 0x828>;
- #address-cells = <1>;
- #size-cells = <1>;
- ranges;
-
- phy_port0: port@...82000 {
- reg = <0xfe382000 0x100>, <0xfe394000 0x100>;
- reg-names = "sata", "pcie";
- #phy-cells = <1>;
- st,sata-gen = <3>;
- };
-
- phy_port1: port@...8a000 {
- reg = <0xfe38a000 0x100>, <0xfe804000 0x100>;;
- reg-names = "sata", "pcie", "syscfg";
- #phy-cells = <1>;
- st,pcie-tx-pol-inv;
- };
- };
-
-Specifying phy control of devices
-=================================
-
-Device nodes should specify the configuration required in their "phys"
-property, containing a phandle to the phy port node and a device type.
-
-Example:
-
-#include <dt-bindings/phy/phy.h>
-
- sata0: sata@...80000 {
- ...
- phys = <&phy_port0 PHY_TYPE_SATA>;
- ...
- };
diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index 19bff3a..d1f22ac 100644
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -120,16 +120,6 @@ config PHY_MIPHY28LP
Enable this to support the miphy transceiver (for SATA/PCIE/USB3)
that is part of STMicroelectronics STiH407 SoC.
-config PHY_MIPHY365X
- tristate "STMicroelectronics MIPHY365X PHY driver for STiH41x series"
- depends on ARCH_STI
- depends on HAS_IOMEM
- depends on OF
- select GENERIC_PHY
- help
- Enable this to support the miphy transceiver (for SATA/PCIE)
- that is part of STMicroelectronics STiH41x SoC series.
-
config PHY_RCAR_GEN2
tristate "Renesas R-Car generation 2 USB PHY driver"
depends on ARCH_RENESAS
diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile
index 90ae198..d169d80 100644
--- a/drivers/phy/Makefile
+++ b/drivers/phy/Makefile
@@ -17,7 +17,6 @@ obj-$(CONFIG_PHY_PXA_28NM_USB2) += phy-pxa-28nm-usb2.o
obj-$(CONFIG_PHY_PXA_28NM_HSIC) += phy-pxa-28nm-hsic.o
obj-$(CONFIG_PHY_MVEBU_SATA) += phy-mvebu-sata.o
obj-$(CONFIG_PHY_MIPHY28LP) += phy-miphy28lp.o
-obj-$(CONFIG_PHY_MIPHY365X) += phy-miphy365x.o
obj-$(CONFIG_PHY_RCAR_GEN2) += phy-rcar-gen2.o
obj-$(CONFIG_PHY_RCAR_GEN3_USB2) += phy-rcar-gen3-usb2.o
obj-$(CONFIG_OMAP_CONTROL_PHY) += phy-omap-control.o
diff --git a/drivers/phy/phy-miphy365x.c b/drivers/phy/phy-miphy365x.c
deleted file mode 100644
index e661f3b..0000000
--- a/drivers/phy/phy-miphy365x.c
+++ /dev/null
@@ -1,625 +0,0 @@
-/*
- * Copyright (C) 2014 STMicroelectronics – All Rights Reserved
- *
- * STMicroelectronics PHY driver MiPHY365 (for SoC STiH416).
- *
- * Authors: Alexandre Torgue <alexandre.torgue@...com>
- * Lee Jones <lee.jones@...aro.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2, as
- * published by the Free Software Foundation.
- *
- */
-
-#include <linux/platform_device.h>
-#include <linux/io.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_platform.h>
-#include <linux/of_address.h>
-#include <linux/clk.h>
-#include <linux/phy/phy.h>
-#include <linux/delay.h>
-#include <linux/mfd/syscon.h>
-#include <linux/regmap.h>
-
-#include <dt-bindings/phy/phy.h>
-
-#define HFC_TIMEOUT 100
-
-#define SYSCFG_SELECT_SATA_MASK BIT(1)
-#define SYSCFG_SELECT_SATA_POS 1
-
-/* MiPHY365x register definitions */
-#define RESET_REG 0x00
-#define RST_PLL BIT(1)
-#define RST_PLL_CAL BIT(2)
-#define RST_RX BIT(4)
-#define RST_MACRO BIT(7)
-
-#define STATUS_REG 0x01
-#define IDLL_RDY BIT(0)
-#define PLL_RDY BIT(1)
-#define DES_BIT_LOCK BIT(2)
-#define DES_SYMBOL_LOCK BIT(3)
-
-#define CTRL_REG 0x02
-#define TERM_EN BIT(0)
-#define PCI_EN BIT(2)
-#define DES_BIT_LOCK_EN BIT(3)
-#define TX_POL BIT(5)
-
-#define INT_CTRL_REG 0x03
-
-#define BOUNDARY1_REG 0x10
-#define SPDSEL_SEL BIT(0)
-
-#define BOUNDARY3_REG 0x12
-#define TX_SPDSEL_GEN1_VAL 0
-#define TX_SPDSEL_GEN2_VAL 0x01
-#define TX_SPDSEL_GEN3_VAL 0x02
-#define RX_SPDSEL_GEN1_VAL 0
-#define RX_SPDSEL_GEN2_VAL (0x01 << 3)
-#define RX_SPDSEL_GEN3_VAL (0x02 << 3)
-
-#define PCIE_REG 0x16
-
-#define BUF_SEL_REG 0x20
-#define CONF_GEN_SEL_GEN3 0x02
-#define CONF_GEN_SEL_GEN2 0x01
-#define PD_VDDTFILTER BIT(4)
-
-#define TXBUF1_REG 0x21
-#define SWING_VAL 0x04
-#define SWING_VAL_GEN1 0x03
-#define PREEMPH_VAL (0x3 << 5)
-
-#define TXBUF2_REG 0x22
-#define TXSLEW_VAL 0x2
-#define TXSLEW_VAL_GEN1 0x4
-
-#define RXBUF_OFFSET_CTRL_REG 0x23
-
-#define RXBUF_REG 0x25
-#define SDTHRES_VAL 0x01
-#define EQ_ON3 (0x03 << 4)
-#define EQ_ON1 (0x01 << 4)
-
-#define COMP_CTRL1_REG 0x40
-#define START_COMSR BIT(0)
-#define START_COMZC BIT(1)
-#define COMSR_DONE BIT(2)
-#define COMZC_DONE BIT(3)
-#define COMP_AUTO_LOAD BIT(4)
-
-#define COMP_CTRL2_REG 0x41
-#define COMP_2MHZ_RAT_GEN1 0x1e
-#define COMP_2MHZ_RAT 0xf
-
-#define COMP_CTRL3_REG 0x42
-#define COMSR_COMP_REF 0x33
-
-#define COMP_IDLL_REG 0x47
-#define COMZC_IDLL 0x2a
-
-#define PLL_CTRL1_REG 0x50
-#define PLL_START_CAL BIT(0)
-#define BUF_EN BIT(2)
-#define SYNCHRO_TX BIT(3)
-#define SSC_EN BIT(6)
-#define CONFIG_PLL BIT(7)
-
-#define PLL_CTRL2_REG 0x51
-#define BYPASS_PLL_CAL BIT(1)
-
-#define PLL_RAT_REG 0x52
-
-#define PLL_SSC_STEP_MSB_REG 0x56
-#define PLL_SSC_STEP_MSB_VAL 0x03
-
-#define PLL_SSC_STEP_LSB_REG 0x57
-#define PLL_SSC_STEP_LSB_VAL 0x63
-
-#define PLL_SSC_PER_MSB_REG 0x58
-#define PLL_SSC_PER_MSB_VAL 0
-
-#define PLL_SSC_PER_LSB_REG 0x59
-#define PLL_SSC_PER_LSB_VAL 0xf1
-
-#define IDLL_TEST_REG 0x72
-#define START_CLK_HF BIT(6)
-
-#define DES_BITLOCK_REG 0x86
-#define BIT_LOCK_LEVEL 0x01
-#define BIT_LOCK_CNT_512 (0x03 << 5)
-
-struct miphy365x_phy {
- struct phy *phy;
- void __iomem *base;
- bool pcie_tx_pol_inv;
- bool sata_tx_pol_inv;
- u32 sata_gen;
- u32 ctrlreg;
- u8 type;
-};
-
-struct miphy365x_dev {
- struct device *dev;
- struct regmap *regmap;
- struct mutex miphy_mutex;
- struct miphy365x_phy **phys;
- int nphys;
-};
-
-/*
- * These values are represented in Device tree. They are considered to be ABI
- * and although they can be extended any existing values must not change.
- */
-enum miphy_sata_gen {
- SATA_GEN1 = 1,
- SATA_GEN2,
- SATA_GEN3
-};
-
-static u8 rx_tx_spd[] = {
- 0, /* GEN0 doesn't exist. */
- TX_SPDSEL_GEN1_VAL | RX_SPDSEL_GEN1_VAL,
- TX_SPDSEL_GEN2_VAL | RX_SPDSEL_GEN2_VAL,
- TX_SPDSEL_GEN3_VAL | RX_SPDSEL_GEN3_VAL
-};
-
-/*
- * This function selects the system configuration,
- * either two SATA, one SATA and one PCIe, or two PCIe lanes.
- */
-static int miphy365x_set_path(struct miphy365x_phy *miphy_phy,
- struct miphy365x_dev *miphy_dev)
-{
- bool sata = (miphy_phy->type == PHY_TYPE_SATA);
-
- return regmap_update_bits(miphy_dev->regmap,
- miphy_phy->ctrlreg,
- SYSCFG_SELECT_SATA_MASK,
- sata << SYSCFG_SELECT_SATA_POS);
-}
-
-static int miphy365x_init_pcie_port(struct miphy365x_phy *miphy_phy,
- struct miphy365x_dev *miphy_dev)
-{
- u8 val;
-
- if (miphy_phy->pcie_tx_pol_inv) {
- /* Invert Tx polarity and clear pci_txdetect_pol bit */
- val = TERM_EN | PCI_EN | DES_BIT_LOCK_EN | TX_POL;
- writeb_relaxed(val, miphy_phy->base + CTRL_REG);
- writeb_relaxed(0x00, miphy_phy->base + PCIE_REG);
- }
-
- return 0;
-}
-
-static inline int miphy365x_hfc_not_rdy(struct miphy365x_phy *miphy_phy,
- struct miphy365x_dev *miphy_dev)
-{
- unsigned long timeout = jiffies + msecs_to_jiffies(HFC_TIMEOUT);
- u8 mask = IDLL_RDY | PLL_RDY;
- u8 regval;
-
- do {
- regval = readb_relaxed(miphy_phy->base + STATUS_REG);
- if (!(regval & mask))
- return 0;
-
- usleep_range(2000, 2500);
- } while (time_before(jiffies, timeout));
-
- dev_err(miphy_dev->dev, "HFC ready timeout!\n");
- return -EBUSY;
-}
-
-static inline int miphy365x_rdy(struct miphy365x_phy *miphy_phy,
- struct miphy365x_dev *miphy_dev)
-{
- unsigned long timeout = jiffies + msecs_to_jiffies(HFC_TIMEOUT);
- u8 mask = IDLL_RDY | PLL_RDY;
- u8 regval;
-
- do {
- regval = readb_relaxed(miphy_phy->base + STATUS_REG);
- if ((regval & mask) == mask)
- return 0;
-
- usleep_range(2000, 2500);
- } while (time_before(jiffies, timeout));
-
- dev_err(miphy_dev->dev, "PHY not ready timeout!\n");
- return -EBUSY;
-}
-
-static inline void miphy365x_set_comp(struct miphy365x_phy *miphy_phy,
- struct miphy365x_dev *miphy_dev)
-{
- u8 val, mask;
-
- if (miphy_phy->sata_gen == SATA_GEN1)
- writeb_relaxed(COMP_2MHZ_RAT_GEN1,
- miphy_phy->base + COMP_CTRL2_REG);
- else
- writeb_relaxed(COMP_2MHZ_RAT,
- miphy_phy->base + COMP_CTRL2_REG);
-
- if (miphy_phy->sata_gen != SATA_GEN3) {
- writeb_relaxed(COMSR_COMP_REF,
- miphy_phy->base + COMP_CTRL3_REG);
- /*
- * Force VCO current to value defined by address 0x5A
- * and disable PCIe100Mref bit
- * Enable auto load compensation for pll_i_bias
- */
- writeb_relaxed(BYPASS_PLL_CAL, miphy_phy->base + PLL_CTRL2_REG);
- writeb_relaxed(COMZC_IDLL, miphy_phy->base + COMP_IDLL_REG);
- }
-
- /*
- * Force restart compensation and enable auto load
- * for Comzc_Tx, Comzc_Rx and Comsr on macro
- */
- val = START_COMSR | START_COMZC | COMP_AUTO_LOAD;
- writeb_relaxed(val, miphy_phy->base + COMP_CTRL1_REG);
-
- mask = COMSR_DONE | COMZC_DONE;
- while ((readb_relaxed(miphy_phy->base + COMP_CTRL1_REG) & mask) != mask)
- cpu_relax();
-}
-
-static inline void miphy365x_set_ssc(struct miphy365x_phy *miphy_phy,
- struct miphy365x_dev *miphy_dev)
-{
- u8 val;
-
- /*
- * SSC Settings. SSC will be enabled through Link
- * SSC Ampl. = 0.4%
- * SSC Freq = 31KHz
- */
- writeb_relaxed(PLL_SSC_STEP_MSB_VAL,
- miphy_phy->base + PLL_SSC_STEP_MSB_REG);
- writeb_relaxed(PLL_SSC_STEP_LSB_VAL,
- miphy_phy->base + PLL_SSC_STEP_LSB_REG);
- writeb_relaxed(PLL_SSC_PER_MSB_VAL,
- miphy_phy->base + PLL_SSC_PER_MSB_REG);
- writeb_relaxed(PLL_SSC_PER_LSB_VAL,
- miphy_phy->base + PLL_SSC_PER_LSB_REG);
-
- /* SSC Settings complete */
- if (miphy_phy->sata_gen == SATA_GEN1) {
- val = PLL_START_CAL | BUF_EN | SYNCHRO_TX | CONFIG_PLL;
- writeb_relaxed(val, miphy_phy->base + PLL_CTRL1_REG);
- } else {
- val = SSC_EN | PLL_START_CAL | BUF_EN | SYNCHRO_TX | CONFIG_PLL;
- writeb_relaxed(val, miphy_phy->base + PLL_CTRL1_REG);
- }
-}
-
-static int miphy365x_init_sata_port(struct miphy365x_phy *miphy_phy,
- struct miphy365x_dev *miphy_dev)
-{
- int ret;
- u8 val;
-
- /*
- * Force PHY macro reset, PLL calibration reset, PLL reset
- * and assert Deserializer Reset
- */
- val = RST_PLL | RST_PLL_CAL | RST_RX | RST_MACRO;
- writeb_relaxed(val, miphy_phy->base + RESET_REG);
-
- if (miphy_phy->sata_tx_pol_inv)
- writeb_relaxed(TX_POL, miphy_phy->base + CTRL_REG);
-
- /*
- * Force macro1 to use rx_lspd, tx_lspd
- * Force Rx_Clock on first I-DLL phase
- * Force Des in HP mode on macro, rx_lspd, tx_lspd for Gen2/3
- */
- writeb_relaxed(SPDSEL_SEL, miphy_phy->base + BOUNDARY1_REG);
- writeb_relaxed(START_CLK_HF, miphy_phy->base + IDLL_TEST_REG);
- val = rx_tx_spd[miphy_phy->sata_gen];
- writeb_relaxed(val, miphy_phy->base + BOUNDARY3_REG);
-
- /* Wait for HFC_READY = 0 */
- ret = miphy365x_hfc_not_rdy(miphy_phy, miphy_dev);
- if (ret)
- return ret;
-
- /* Compensation Recalibration */
- miphy365x_set_comp(miphy_phy, miphy_dev);
-
- switch (miphy_phy->sata_gen) {
- case SATA_GEN3:
- /*
- * TX Swing target 550-600mv peak to peak diff
- * Tx Slew target 90-110ps rising/falling time
- * Rx Eq ON3, Sigdet threshold SDTH1
- */
- val = PD_VDDTFILTER | CONF_GEN_SEL_GEN3;
- writeb_relaxed(val, miphy_phy->base + BUF_SEL_REG);
- val = SWING_VAL | PREEMPH_VAL;
- writeb_relaxed(val, miphy_phy->base + TXBUF1_REG);
- writeb_relaxed(TXSLEW_VAL, miphy_phy->base + TXBUF2_REG);
- writeb_relaxed(0x00, miphy_phy->base + RXBUF_OFFSET_CTRL_REG);
- val = SDTHRES_VAL | EQ_ON3;
- writeb_relaxed(val, miphy_phy->base + RXBUF_REG);
- break;
- case SATA_GEN2:
- /*
- * conf gen sel=0x1 to program Gen2 banked registers
- * VDDT filter ON
- * Tx Swing target 550-600mV peak-to-peak diff
- * Tx Slew target 90-110 ps rising/falling time
- * RX Equalization ON1, Sigdet threshold SDTH1
- */
- writeb_relaxed(CONF_GEN_SEL_GEN2,
- miphy_phy->base + BUF_SEL_REG);
- writeb_relaxed(SWING_VAL, miphy_phy->base + TXBUF1_REG);
- writeb_relaxed(TXSLEW_VAL, miphy_phy->base + TXBUF2_REG);
- val = SDTHRES_VAL | EQ_ON1;
- writeb_relaxed(val, miphy_phy->base + RXBUF_REG);
- break;
- case SATA_GEN1:
- /*
- * conf gen sel = 00b to program Gen1 banked registers
- * VDDT filter ON
- * Tx Swing target 500-550mV peak-to-peak diff
- * Tx Slew target120-140 ps rising/falling time
- */
- writeb_relaxed(PD_VDDTFILTER, miphy_phy->base + BUF_SEL_REG);
- writeb_relaxed(SWING_VAL_GEN1, miphy_phy->base + TXBUF1_REG);
- writeb_relaxed(TXSLEW_VAL_GEN1, miphy_phy->base + TXBUF2_REG);
- break;
- default:
- break;
- }
-
- /* Force Macro1 in partial mode & release pll cal reset */
- writeb_relaxed(RST_RX, miphy_phy->base + RESET_REG);
- usleep_range(100, 150);
-
- miphy365x_set_ssc(miphy_phy, miphy_dev);
-
- /* Wait for phy_ready */
- ret = miphy365x_rdy(miphy_phy, miphy_dev);
- if (ret)
- return ret;
-
- /*
- * Enable macro1 to use rx_lspd & tx_lspd
- * Release Rx_Clock on first I-DLL phase on macro1
- * Assert deserializer reset
- * des_bit_lock_en is set
- * bit lock detection strength
- * Deassert deserializer reset
- */
- writeb_relaxed(0x00, miphy_phy->base + BOUNDARY1_REG);
- writeb_relaxed(0x00, miphy_phy->base + IDLL_TEST_REG);
- writeb_relaxed(RST_RX, miphy_phy->base + RESET_REG);
- val = miphy_phy->sata_tx_pol_inv ?
- (TX_POL | DES_BIT_LOCK_EN) : DES_BIT_LOCK_EN;
- writeb_relaxed(val, miphy_phy->base + CTRL_REG);
-
- val = BIT_LOCK_CNT_512 | BIT_LOCK_LEVEL;
- writeb_relaxed(val, miphy_phy->base + DES_BITLOCK_REG);
- writeb_relaxed(0x00, miphy_phy->base + RESET_REG);
-
- return 0;
-}
-
-static int miphy365x_init(struct phy *phy)
-{
- struct miphy365x_phy *miphy_phy = phy_get_drvdata(phy);
- struct miphy365x_dev *miphy_dev = dev_get_drvdata(phy->dev.parent);
- int ret = 0;
-
- mutex_lock(&miphy_dev->miphy_mutex);
-
- ret = miphy365x_set_path(miphy_phy, miphy_dev);
- if (ret) {
- mutex_unlock(&miphy_dev->miphy_mutex);
- return ret;
- }
-
- /* Initialise Miphy for PCIe or SATA */
- if (miphy_phy->type == PHY_TYPE_PCIE)
- ret = miphy365x_init_pcie_port(miphy_phy, miphy_dev);
- else
- ret = miphy365x_init_sata_port(miphy_phy, miphy_dev);
-
- mutex_unlock(&miphy_dev->miphy_mutex);
-
- return ret;
-}
-
-static int miphy365x_get_addr(struct device *dev,
- struct miphy365x_phy *miphy_phy, int index)
-{
- struct device_node *phynode = miphy_phy->phy->dev.of_node;
- const char *name;
- int type = miphy_phy->type;
- int ret;
-
- ret = of_property_read_string_index(phynode, "reg-names", index, &name);
- if (ret) {
- dev_err(dev, "no reg-names property not found\n");
- return ret;
- }
-
- if (!((!strncmp(name, "sata", 4) && type == PHY_TYPE_SATA) ||
- (!strncmp(name, "pcie", 4) && type == PHY_TYPE_PCIE)))
- return 0;
-
- miphy_phy->base = of_iomap(phynode, index);
- if (!miphy_phy->base) {
- dev_err(dev, "Failed to map %s\n", phynode->full_name);
- return -EINVAL;
- }
-
- return 0;
-}
-
-static struct phy *miphy365x_xlate(struct device *dev,
- struct of_phandle_args *args)
-{
- struct miphy365x_dev *miphy_dev = dev_get_drvdata(dev);
- struct miphy365x_phy *miphy_phy = NULL;
- struct device_node *phynode = args->np;
- int ret, index;
-
- if (args->args_count != 1) {
- dev_err(dev, "Invalid number of cells in 'phy' property\n");
- return ERR_PTR(-EINVAL);
- }
-
- for (index = 0; index < miphy_dev->nphys; index++)
- if (phynode == miphy_dev->phys[index]->phy->dev.of_node) {
- miphy_phy = miphy_dev->phys[index];
- break;
- }
-
- if (!miphy_phy) {
- dev_err(dev, "Failed to find appropriate phy\n");
- return ERR_PTR(-EINVAL);
- }
-
- miphy_phy->type = args->args[0];
-
- if (!(miphy_phy->type == PHY_TYPE_SATA ||
- miphy_phy->type == PHY_TYPE_PCIE)) {
- dev_err(dev, "Unsupported device type: %d\n", miphy_phy->type);
- return ERR_PTR(-EINVAL);
- }
-
- /* Each port handles SATA and PCIE - third entry is always sysconf. */
- for (index = 0; index < 3; index++) {
- ret = miphy365x_get_addr(dev, miphy_phy, index);
- if (ret < 0)
- return ERR_PTR(ret);
- }
-
- return miphy_phy->phy;
-}
-
-static const struct phy_ops miphy365x_ops = {
- .init = miphy365x_init,
- .owner = THIS_MODULE,
-};
-
-static int miphy365x_of_probe(struct device_node *phynode,
- struct miphy365x_phy *miphy_phy)
-{
- of_property_read_u32(phynode, "st,sata-gen", &miphy_phy->sata_gen);
- if (!miphy_phy->sata_gen)
- miphy_phy->sata_gen = SATA_GEN1;
-
- miphy_phy->pcie_tx_pol_inv =
- of_property_read_bool(phynode, "st,pcie-tx-pol-inv");
-
- miphy_phy->sata_tx_pol_inv =
- of_property_read_bool(phynode, "st,sata-tx-pol-inv");
-
- return 0;
-}
-
-static int miphy365x_probe(struct platform_device *pdev)
-{
- struct device_node *child, *np = pdev->dev.of_node;
- struct miphy365x_dev *miphy_dev;
- struct phy_provider *provider;
- struct phy *phy;
- int ret, port = 0;
-
- miphy_dev = devm_kzalloc(&pdev->dev, sizeof(*miphy_dev), GFP_KERNEL);
- if (!miphy_dev)
- return -ENOMEM;
-
- miphy_dev->nphys = of_get_child_count(np);
- miphy_dev->phys = devm_kcalloc(&pdev->dev, miphy_dev->nphys,
- sizeof(*miphy_dev->phys), GFP_KERNEL);
- if (!miphy_dev->phys)
- return -ENOMEM;
-
- miphy_dev->regmap = syscon_regmap_lookup_by_phandle(np, "st,syscfg");
- if (IS_ERR(miphy_dev->regmap)) {
- dev_err(miphy_dev->dev, "No syscfg phandle specified\n");
- return PTR_ERR(miphy_dev->regmap);
- }
-
- miphy_dev->dev = &pdev->dev;
-
- dev_set_drvdata(&pdev->dev, miphy_dev);
-
- mutex_init(&miphy_dev->miphy_mutex);
-
- for_each_child_of_node(np, child) {
- struct miphy365x_phy *miphy_phy;
-
- miphy_phy = devm_kzalloc(&pdev->dev, sizeof(*miphy_phy),
- GFP_KERNEL);
- if (!miphy_phy) {
- ret = -ENOMEM;
- goto put_child;
- }
-
- miphy_dev->phys[port] = miphy_phy;
-
- phy = devm_phy_create(&pdev->dev, child, &miphy365x_ops);
- if (IS_ERR(phy)) {
- dev_err(&pdev->dev, "failed to create PHY\n");
- ret = PTR_ERR(phy);
- goto put_child;
- }
-
- miphy_dev->phys[port]->phy = phy;
-
- ret = miphy365x_of_probe(child, miphy_phy);
- if (ret)
- goto put_child;
-
- phy_set_drvdata(phy, miphy_dev->phys[port]);
-
- port++;
- /* sysconfig offsets are indexed from 1 */
- ret = of_property_read_u32_index(np, "st,syscfg", port,
- &miphy_phy->ctrlreg);
- if (ret) {
- dev_err(&pdev->dev, "No sysconfig offset found\n");
- goto put_child;
- }
- }
-
- provider = devm_of_phy_provider_register(&pdev->dev, miphy365x_xlate);
- return PTR_ERR_OR_ZERO(provider);
-put_child:
- of_node_put(child);
- return ret;
-}
-
-static const struct of_device_id miphy365x_of_match[] = {
- { .compatible = "st,miphy365x-phy", },
- { },
-};
-MODULE_DEVICE_TABLE(of, miphy365x_of_match);
-
-static struct platform_driver miphy365x_driver = {
- .probe = miphy365x_probe,
- .driver = {
- .name = "miphy365x-phy",
- .of_match_table = miphy365x_of_match,
- }
-};
-module_platform_driver(miphy365x_driver);
-
-MODULE_AUTHOR("Alexandre Torgue <alexandre.torgue@...com>");
-MODULE_DESCRIPTION("STMicroelectronics miphy365x driver");
-MODULE_LICENSE("GPL v2");
--
1.9.1
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