+++ /dev/null
-From a52ae09871d171d6771b4bef2d4c56dd435e740f Mon Sep 17 00:00:00 2001
-From: Roger Quadros <rogerq@ti.com>
-Date: Mon, 20 Jan 2014 16:32:33 +0200
-Subject: [PATCH] ata: ahci_platform: Add DT compatible for Synopsis DWC AHCI
- controller
-
-Add compatible string "snps,dwc-ahci", which should be used
-for Synopsis Designware SATA cores. e.g. on TI OMAP5 and DRA7 platforms.
-
-Signed-off-by: Roger Quadros <rogerq@ti.com>
-Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
-Signed-off-by: Hans de Goede <hdegoede@redhat.com>
----
- drivers/ata/ahci_platform.c | 1 +
- 1 file changed, 1 insertion(+)
-
---- a/drivers/ata/ahci_platform.c
-+++ b/drivers/ata/ahci_platform.c
-@@ -23,6 +23,8 @@
- #include <linux/platform_device.h>
- #include <linux/libata.h>
- #include <linux/ahci_platform.h>
-+#include <linux/phy/phy.h>
-+#include <linux/pm_runtime.h>
- #include "ahci.h"
-
- static void ahci_host_stop(struct ata_host *host);
-@@ -147,6 +149,7 @@ EXPORT_SYMBOL_GPL(ahci_platform_disable_
- * 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 +174,23 @@ int ahci_platform_enable_resources(struc
- 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 +204,20 @@ EXPORT_SYMBOL_GPL(ahci_platform_enable_r
- *
- * 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)
-@@ -206,6 +230,11 @@ static void ahci_platform_put_resources(
- struct ahci_host_priv *hpriv = res;
- int c;
-
-+ if (hpriv->got_runtime_pm) {
-+ pm_runtime_put_sync(dev);
-+ pm_runtime_disable(dev);
-+ }
-+
- for (c = 0; c < AHCI_MAX_CLKS && hpriv->clks[c]; c++)
- clk_put(hpriv->clks[c]);
- }
-@@ -222,6 +251,7 @@ static void ahci_platform_put_resources(
- * 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 +313,29 @@ struct ahci_host_priv *ahci_platform_get
- 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;
-+ }
-+ }
-+
-+ pm_runtime_enable(dev);
-+ pm_runtime_get_sync(dev);
-+ hpriv->got_runtime_pm = true;
-+
- devres_remove_group(dev, NULL);
- return hpriv;
-
-@@ -592,6 +645,11 @@ int ahci_platform_resume(struct device *
- if (rc)
- goto disable_resources;
-
-+ /* We resumed so update PM runtime state */
-+ pm_runtime_disable(dev);
-+ pm_runtime_set_active(dev);
-+ pm_runtime_enable(dev);
-+
- return 0;
-
- disable_resources:
-@@ -609,6 +667,7 @@ static const struct of_device_id ahci_of
- { .compatible = "snps,spear-ahci", },
- { .compatible = "snps,exynos5440-ahci", },
- { .compatible = "ibm,476gtr-ahci", },
-+ { .compatible = "snps,dwc-ahci", },
- {},
- };
- MODULE_DEVICE_TABLE(of, ahci_of_match);
---- 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 */
-@@ -324,8 +325,10 @@ struct ahci_host_priv {
- u32 em_loc; /* enclosure management location */
- u32 em_buf_sz; /* EM buffer size in byte */
- u32 em_msg_type; /* EM message type */
-+ bool got_runtime_pm; /* Did we do pm_runtime_get? */
- 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
---- a/drivers/ata/ahci_sunxi.c
-+++ b/drivers/ata/ahci_sunxi.c
-@@ -90,7 +90,7 @@ static int ahci_sunxi_phy_init(struct de
-
- /* This magic is from the original code */
- writel(0, reg_base + AHCI_RWCR);
-- mdelay(5);
-+ msleep(5);
-
- sunxi_setbits(reg_base + AHCI_PHYCS1R, BIT(19));
- sunxi_clrsetbits(reg_base + AHCI_PHYCS0R,
-@@ -105,7 +105,7 @@ static int ahci_sunxi_phy_init(struct de
- (0x7 << 20), (0x3 << 20));
- sunxi_clrsetbits(reg_base + AHCI_PHYCS2R,
- (0x1f << 5), (0x19 << 5));
-- mdelay(5);
-+ msleep(5);
-
- sunxi_setbits(reg_base + AHCI_PHYCS0R, (0x1 << 19));
-
-@@ -137,7 +137,7 @@ static int ahci_sunxi_phy_init(struct de
- udelay(1);
- } while (1);
-
-- mdelay(15);
-+ msleep(15);
-
- writel(0x7, reg_base + AHCI_RWCR);
-
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