diff options
Diffstat (limited to 'target/linux/ipq806x/patches/0117-ata-ahci_platform-Manage-SATA-PHY.patch')
| -rw-r--r-- | target/linux/ipq806x/patches/0117-ata-ahci_platform-Manage-SATA-PHY.patch | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches/0117-ata-ahci_platform-Manage-SATA-PHY.patch b/target/linux/ipq806x/patches/0117-ata-ahci_platform-Manage-SATA-PHY.patch new file mode 100644 index 0000000000..fab7e57635 --- /dev/null +++ b/target/linux/ipq806x/patches/0117-ata-ahci_platform-Manage-SATA-PHY.patch @@ -0,0 +1,141 @@ +From 05b9b8d1035944af25694d2ebe53077cf1ccb067 Mon Sep 17 00:00:00 2001 +From: Roger Quadros <rogerq@ti.com> +Date: Sat, 22 Feb 2014 16:53:40 +0100 +Subject: [PATCH 117/182] ata: ahci_platform: Manage SATA PHY + +Some platforms have a PHY hooked up to the SATA controller. The PHY +needs to be initialized and powered up for SATA to work. We do that +using the PHY framework. + +tj: Minor comment formatting updates. + +CC: Balaji T K <balajitk@ti.com> +Signed-off-by: Roger Quadros <rogerq@ti.com> +Signed-off-by: Hans de Goede <hdegoede@redhat.com> +Signed-off-by: Tejun Heo<tj@kernel.org> +--- + drivers/ata/ahci.h | 2 ++ + drivers/ata/ahci_platform.c | 47 +++++++++++++++++++++++++++++++++++++++++-- + 2 files changed, 47 insertions(+), 2 deletions(-) + +diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h +index bf8100c..3ab7ac9 100644 +--- a/drivers/ata/ahci.h ++++ b/drivers/ata/ahci.h +@@ -37,6 +37,7 @@ + + #include <linux/clk.h> + #include <linux/libata.h> ++#include <linux/phy/phy.h> + #include <linux/regulator/consumer.h> + + /* Enclosure Management Control */ +@@ -325,6 +326,7 @@ struct ahci_host_priv { + u32 em_msg_type; /* EM message type */ + struct clk *clks[AHCI_MAX_CLKS]; /* Optional */ + struct regulator *target_pwr; /* Optional */ ++ struct phy *phy; /* If platform uses phy */ + void *plat_data; /* Other platform data */ + /* + * Optional ahci_start_engine override, if not set this gets set to the +diff --git a/drivers/ata/ahci_platform.c b/drivers/ata/ahci_platform.c +index 968e7d9..243dde3 100644 +--- a/drivers/ata/ahci_platform.c ++++ b/drivers/ata/ahci_platform.c +@@ -22,6 +22,7 @@ + #include <linux/platform_device.h> + #include <linux/libata.h> + #include <linux/ahci_platform.h> ++#include <linux/phy/phy.h> + #include "ahci.h" + + static void ahci_host_stop(struct ata_host *host); +@@ -140,6 +141,7 @@ EXPORT_SYMBOL_GPL(ahci_platform_disable_clks); + * following order: + * 1) Regulator + * 2) Clocks (through ahci_platform_enable_clks) ++ * 3) Phy + * + * If resource enabling fails at any point the previous enabled resources + * are disabled in reverse order. +@@ -161,8 +163,23 @@ int ahci_platform_enable_resources(struct ahci_host_priv *hpriv) + if (rc) + goto disable_regulator; + ++ if (hpriv->phy) { ++ rc = phy_init(hpriv->phy); ++ if (rc) ++ goto disable_clks; ++ ++ rc = phy_power_on(hpriv->phy); ++ if (rc) { ++ phy_exit(hpriv->phy); ++ goto disable_clks; ++ } ++ } ++ + return 0; + ++disable_clks: ++ ahci_platform_disable_clks(hpriv); ++ + disable_regulator: + if (hpriv->target_pwr) + regulator_disable(hpriv->target_pwr); +@@ -176,11 +193,17 @@ EXPORT_SYMBOL_GPL(ahci_platform_enable_resources); + * + * This function disables all ahci_platform managed resources in the + * following order: +- * 1) Clocks (through ahci_platform_disable_clks) +- * 2) Regulator ++ * 1) Phy ++ * 2) Clocks (through ahci_platform_disable_clks) ++ * 3) Regulator + */ + void ahci_platform_disable_resources(struct ahci_host_priv *hpriv) + { ++ if (hpriv->phy) { ++ phy_power_off(hpriv->phy); ++ phy_exit(hpriv->phy); ++ } ++ + ahci_platform_disable_clks(hpriv); + + if (hpriv->target_pwr) +@@ -208,6 +231,7 @@ static void ahci_platform_put_resources(struct device *dev, void *res) + * 2) regulator for controlling the targets power (optional) + * 3) 0 - AHCI_MAX_CLKS clocks, as specified in the devs devicetree node, + * or for non devicetree enabled platforms a single clock ++ * 4) phy (optional) + * + * RETURNS: + * The allocated ahci_host_priv on success, otherwise an ERR_PTR value +@@ -266,6 +290,25 @@ struct ahci_host_priv *ahci_platform_get_resources( + hpriv->clks[i] = clk; + } + ++ hpriv->phy = devm_phy_get(dev, "sata-phy"); ++ if (IS_ERR(hpriv->phy)) { ++ rc = PTR_ERR(hpriv->phy); ++ switch (rc) { ++ case -ENODEV: ++ case -ENOSYS: ++ /* continue normally */ ++ hpriv->phy = NULL; ++ break; ++ ++ case -EPROBE_DEFER: ++ goto err_out; ++ ++ default: ++ dev_err(dev, "couldn't get sata-phy\n"); ++ goto err_out; ++ } ++ } ++ + devres_remove_group(dev, NULL); + return hpriv; + +-- +1.7.10.4 + |