-+static void ahci_put_clks(struct ahci_host_priv *hpriv)
-+{
-+ int c;
-+
-+ for (c = 0; c < AHCI_MAX_CLKS && hpriv->clks[c]; c++)
-+ clk_put(hpriv->clks[c]);
-+}
-+
- static int ahci_probe(struct platform_device *pdev)
- {
- struct device *dev = &pdev->dev;
-@@ -97,6 +157,7 @@ static int ahci_probe(struct platform_device *pdev)
- struct ahci_host_priv *hpriv;
- struct ata_host *host;
- struct resource *mem;
-+ struct clk *clk;
- int irq;
- int n_ports;
- int i;
-@@ -131,17 +192,31 @@ static int ahci_probe(struct platform_device *pdev)
- return -ENOMEM;
- }
-
-- hpriv->clk = clk_get(dev, NULL);
-- if (IS_ERR(hpriv->clk)) {
-- dev_err(dev, "can't get clock\n");
-- } else {
-- rc = clk_prepare_enable(hpriv->clk);
-- if (rc) {
-- dev_err(dev, "clock prepare enable failed");
-- goto free_clk;
-+ for (i = 0; i < AHCI_MAX_CLKS; i++) {
-+ /*
-+ * For now we must use clk_get(dev, NULL) for the first clock,
-+ * because some platforms (da850, spear13xx) are not yet
-+ * converted to use devicetree for clocks. For new platforms
-+ * this is equivalent to of_clk_get(dev->of_node, 0).
-+ */
-+ if (i == 0)
-+ clk = clk_get(dev, NULL);
-+ else
-+ clk = of_clk_get(dev->of_node, i);
-+
-+ if (IS_ERR(clk)) {
-+ rc = PTR_ERR(clk);
-+ if (rc == -EPROBE_DEFER)
-+ goto free_clk;
-+ break;
- }
-+ hpriv->clks[i] = clk;
- }
-
-+ rc = ahci_enable_clks(dev, hpriv);
-+ if (rc)
-+ goto free_clk;
-+
- /*
- * Some platforms might need to prepare for mmio region access,
- * which could be done in the following init call. So, the mmio
-@@ -222,11 +297,9 @@ static int ahci_probe(struct platform_device *pdev)
- if (pdata && pdata->exit)
- pdata->exit(dev);
- disable_unprepare_clk:
-- if (!IS_ERR(hpriv->clk))
-- clk_disable_unprepare(hpriv->clk);
-+ ahci_disable_clks(hpriv);
- free_clk:
-- if (!IS_ERR(hpriv->clk))
-- clk_put(hpriv->clk);
-+ ahci_put_clks(hpriv);
- return rc;
- }
-
-@@ -239,10 +312,8 @@ static void ahci_host_stop(struct ata_host *host)
- if (pdata && pdata->exit)
- pdata->exit(dev);
-
-- if (!IS_ERR(hpriv->clk)) {
-- clk_disable_unprepare(hpriv->clk);
-- clk_put(hpriv->clk);
-- }
-+ ahci_disable_clks(hpriv);
-+ ahci_put_clks(hpriv);
- }
-
- #ifdef CONFIG_PM_SLEEP
-@@ -277,8 +348,7 @@ static int ahci_suspend(struct device *dev)
- if (pdata && pdata->suspend)
- return pdata->suspend(dev);
-
-- if (!IS_ERR(hpriv->clk))
-- clk_disable_unprepare(hpriv->clk);
-+ ahci_disable_clks(hpriv);
-
- return 0;
- }
-@@ -290,13 +360,9 @@ static int ahci_resume(struct device *dev)
- struct ahci_host_priv *hpriv = host->private_data;
- int rc;
-
-- if (!IS_ERR(hpriv->clk)) {
-- rc = clk_prepare_enable(hpriv->clk);
-- if (rc) {
-- dev_err(dev, "clock prepare enable failed");
-- return rc;
-- }
-- }
-+ rc = ahci_enable_clks(dev, hpriv);
-+ if (rc)
-+ return rc;
-
- if (pdata && pdata->resume) {
- rc = pdata->resume(dev);
-@@ -317,8 +383,7 @@ static int ahci_resume(struct device *dev)
- return 0;
-
- disable_unprepare_clk:
-- if (!IS_ERR(hpriv->clk))
-- clk_disable_unprepare(hpriv->clk);
-+ ahci_disable_clks(hpriv);
-
- return rc;
- }
-diff --git a/include/linux/ahci_platform.h b/include/linux/ahci_platform.h
-index 73a2500..769d065 100644
---- a/include/linux/ahci_platform.h
-+++ b/include/linux/ahci_platform.h
-@@ -19,6 +19,7 @@
-
- struct device;
- struct ata_port_info;
-+struct ahci_host_priv;
-
- struct ahci_platform_data {
- int (*init)(struct device *dev, void __iomem *addr);
-@@ -30,4 +31,7 @@ struct ahci_platform_data {
- unsigned int mask_port_map;
- };
-
-+int ahci_platform_enable_clks(struct ahci_host_priv *hpriv);
-+void ahci_platform_disable_clks(struct ahci_host_priv *hpriv);
-+
- #endif /* _AHCI_PLATFORM_H */
---
-2.0.3
-
-From 3dc53b267843b6dfeb2eb67e52e17915dc2347ab Mon Sep 17 00:00:00 2001
-From: Hans de Goede <hdegoede@redhat.com>
-Date: Fri, 17 Jan 2014 13:23:21 +0100
-Subject: [PATCH] ahci-platform: Add support for an optional regulator for
- sata-target power
-
-Signed-off-by: Hans de Goede <hdegoede@redhat.com>
----
- .../devicetree/bindings/ata/ahci-platform.txt | 1 +
- drivers/ata/ahci.h | 2 ++
- drivers/ata/ahci_platform.c | 36 ++++++++++++++++++++--
- 3 files changed, 37 insertions(+), 2 deletions(-)
-
-diff --git a/Documentation/devicetree/bindings/ata/ahci-platform.txt b/Documentation/devicetree/bindings/ata/ahci-platform.txt
-index 3ced07d..1ac807f 100644
---- a/Documentation/devicetree/bindings/ata/ahci-platform.txt
-+++ b/Documentation/devicetree/bindings/ata/ahci-platform.txt
-@@ -11,6 +11,7 @@ Required properties:
- Optional properties:
- - dma-coherent : Present if dma operations are coherent
- - clocks : a list of phandle + clock specifier pairs
-+- target-supply : regulator for SATA target power
-
- Example:
- sata@ffe08000 {
-diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h
-index c12862b..bf8100c 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/regulator/consumer.h>
-
- /* Enclosure Management Control */
- #define EM_CTRL_MSG_TYPE 0x000f0000
-@@ -323,6 +324,7 @@ struct ahci_host_priv {
- u32 em_buf_sz; /* EM buffer size in byte */
- u32 em_msg_type; /* EM message type */
- struct clk *clks[AHCI_MAX_CLKS]; /* Optional */
-+ struct regulator *target_pwr; /* Optional */
- 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 609975d..907c076 100644
---- a/drivers/ata/ahci_platform.c
-+++ b/drivers/ata/ahci_platform.c
-@@ -192,6 +192,14 @@ static int ahci_probe(struct platform_device *pdev)
- return -ENOMEM;
- }
-
-+ hpriv->target_pwr = devm_regulator_get_optional(dev, "target");
-+ if (IS_ERR(hpriv->target_pwr)) {
-+ rc = PTR_ERR(hpriv->target_pwr);
-+ if (rc == -EPROBE_DEFER)
-+ return -EPROBE_DEFER;
-+ hpriv->target_pwr = NULL;
-+ }
-+
- for (i = 0; i < AHCI_MAX_CLKS; i++) {
- /*
- * For now we must use clk_get(dev, NULL) for the first clock,
-@@ -213,9 +221,15 @@ static int ahci_probe(struct platform_device *pdev)
- hpriv->clks[i] = clk;
- }
-
-+ if (hpriv->target_pwr) {
-+ rc = regulator_enable(hpriv->target_pwr);
-+ if (rc)
-+ goto free_clk;
-+ }
-+
- rc = ahci_enable_clks(dev, hpriv);
- if (rc)
-- goto free_clk;
-+ goto disable_regulator;
-
- /*
- * Some platforms might need to prepare for mmio region access,
-@@ -298,6 +312,9 @@ static int ahci_probe(struct platform_device *pdev)
- pdata->exit(dev);
- disable_unprepare_clk:
- ahci_disable_clks(hpriv);
-+disable_regulator:
-+ if (hpriv->target_pwr)
-+ regulator_disable(hpriv->target_pwr);
- free_clk:
- ahci_put_clks(hpriv);
- return rc;
-@@ -314,6 +331,9 @@ static void ahci_host_stop(struct ata_host *host)
-
- ahci_disable_clks(hpriv);
- ahci_put_clks(hpriv);
-+
-+ if (hpriv->target_pwr)
-+ regulator_disable(hpriv->target_pwr);
- }
-
- #ifdef CONFIG_PM_SLEEP
-@@ -350,6 +370,9 @@ static int ahci_suspend(struct device *dev)
-
- ahci_disable_clks(hpriv);
-
-+ if (hpriv->target_pwr)
-+ regulator_disable(hpriv->target_pwr);
-+
- return 0;
- }
-
-@@ -360,9 +383,15 @@ static int ahci_resume(struct device *dev)
- struct ahci_host_priv *hpriv = host->private_data;
- int rc;
-
-+ if (hpriv->target_pwr) {
-+ rc = regulator_enable(hpriv->target_pwr);
-+ if (rc)
-+ return rc;
-+ }
-+
- rc = ahci_enable_clks(dev, hpriv);
- if (rc)
-- return rc;
-+ goto disable_regulator;
-
- if (pdata && pdata->resume) {
- rc = pdata->resume(dev);
-@@ -384,6 +413,9 @@ static int ahci_resume(struct device *dev)
-
- disable_unprepare_clk:
- ahci_disable_clks(hpriv);
-+disable_regulator:
-+ if (hpriv->target_pwr)
-+ regulator_disable(hpriv->target_pwr);
-
- return rc;
- }
---
-2.0.3
-
-From 74f54552b061865ff46d43aa68d0c6e8852dc592 Mon Sep 17 00:00:00 2001
-From: Hans de Goede <hdegoede@redhat.com>
-Date: Mon, 20 Jan 2014 14:54:40 +0100
-Subject: [PATCH] ahci-platform: Add enable_ / disable_resources helper
- functions
-
-Signed-off-by: Hans de Goede <hdegoede@redhat.com>
----
- drivers/ata/ahci_platform.c | 112 ++++++++++++++++++++++++++++--------------
- include/linux/ahci_platform.h | 2 +
- 2 files changed, 77 insertions(+), 37 deletions(-)
-
-diff --git a/drivers/ata/ahci_platform.c b/drivers/ata/ahci_platform.c
-index 907c076..6ebbc17 100644
---- a/drivers/ata/ahci_platform.c
-+++ b/drivers/ata/ahci_platform.c
-@@ -139,6 +139,68 @@ void ahci_platform_disable_clks(struct ahci_host_priv *hpriv)
- }
- EXPORT_SYMBOL_GPL(ahci_platform_disable_clks);
-
projects / openwrt / staging / mkresin.git / commitdiff