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-rw-r--r--target/linux/sunxi/patches-3.13/162-2-ahci-plat-manage-sata-phy.patch142
1 files changed, 142 insertions, 0 deletions
diff --git a/target/linux/sunxi/patches-3.13/162-2-ahci-plat-manage-sata-phy.patch b/target/linux/sunxi/patches-3.13/162-2-ahci-plat-manage-sata-phy.patch
new file mode 100644
index 0000000000..1ab704beda
--- /dev/null
+++ b/target/linux/sunxi/patches-3.13/162-2-ahci-plat-manage-sata-phy.patch
@@ -0,0 +1,142 @@
+From 154a670a945c54300749d5ba008f30bbd6089017 Mon Sep 17 00:00:00 2001
+From: Roger Quadros <rogerq@ti.com>
+Date: Mon, 27 Jan 2014 16:41:18 +0200
+Subject: [PATCH] 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.
+
+CC: Balaji T K <balajitk@ti.com>
+Signed-off-by: Roger Quadros <rogerq@ti.com>
+Signed-off-by: Hans de Goede <hdegoede@redhat.com>
+---
+ 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 d7e55ba..99d38c1 100644
+--- a/drivers/ata/ahci_platform.c
++++ b/drivers/ata/ahci_platform.c
+@@ -23,6 +23,7 @@
+ #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);
+@@ -147,6 +148,7 @@ void ahci_platform_disable_clks(struct ahci_host_priv *hpriv)
+ * the 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.
+@@ -171,8 +173,23 @@ 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);
+@@ -186,14 +203,20 @@ int ahci_platform_enable_resources(struct ahci_host_priv *hpriv)
+ *
+ * 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
+ *
+ * LOCKING:
+ * None.
+ */
+ 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)
+@@ -222,6 +245,7 @@ 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)
+ *
+ * LOCKING:
+ * None.
+@@ -283,6 +307,25 @@ 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;
+
+--
+1.8.5.5
+