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-rw-r--r--target/linux/sunxi/patches-3.13/160-8-ahci-plat-libraryise-ahci_probe.patch344
1 files changed, 0 insertions, 344 deletions
diff --git a/target/linux/sunxi/patches-3.13/160-8-ahci-plat-libraryise-ahci_probe.patch b/target/linux/sunxi/patches-3.13/160-8-ahci-plat-libraryise-ahci_probe.patch
deleted file mode 100644
index 8f0ba4c2cd..0000000000
--- a/target/linux/sunxi/patches-3.13/160-8-ahci-plat-libraryise-ahci_probe.patch
+++ /dev/null
@@ -1,344 +0,0 @@
-From 98601575da5276173233dd575bdd61cccdeb861a Mon Sep 17 00:00:00 2001
-From: Hans de Goede <hdegoede@redhat.com>
-Date: Mon, 20 Jan 2014 14:58:04 +0100
-Subject: [PATCH] ahci-platform: "Library-ise" ahci_probe functionality
-
-ahci_probe consists of 3 steps:
-1) Get resources (get mmio, clks, regulator)
-2) Enable resources, handled by ahci_platform_enable_resouces
-3) The more or less standard ahci-host controller init sequence
-
-This commit refactors step 1 and 3 into separate functions, so the platform
-drivers for AHCI implementations which need a specific order in step 2,
-and / or need to do some custom register poking at some time, can re-use
-ahci-platform.c code without needing to copy and paste it.
-
-Note that ahci_platform_init_host's prototype takes the 3 non function
-members of ahci_platform_data as arguments, the idea is that drivers using
-the new exported utility functions will not use ahci_platform_data at all,
-and hopefully in the future ahci_platform_data can go away entirely.
-
-Signed-off-by: Hans de Goede <hdegoede@redhat.com>
----
- drivers/ata/ahci_platform.c | 195 ++++++++++++++++++++++++++++--------------
- include/linux/ahci_platform.h | 14 +++
- 2 files changed, 144 insertions(+), 65 deletions(-)
-
-diff --git a/drivers/ata/ahci_platform.c b/drivers/ata/ahci_platform.c
-index 6ebbc17..7f3f2ac 100644
---- a/drivers/ata/ahci_platform.c
-+++ b/drivers/ata/ahci_platform.c
-@@ -201,64 +201,64 @@ void ahci_platform_disable_resources(struct ahci_host_priv *hpriv)
- }
- EXPORT_SYMBOL_GPL(ahci_platform_disable_resources);
-
--static void ahci_put_clks(struct ahci_host_priv *hpriv)
-+static void ahci_platform_put_resources(struct device *dev, void *res)
- {
-+ struct ahci_host_priv *hpriv = res;
- 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)
-+/**
-+ * ahci_platform_get_resources - Get platform resources
-+ * @pdev: platform device to get resources for
-+ *
-+ * This function allocates an ahci_host_priv struct, and gets the
-+ * following resources, storing a reference to them inside the returned
-+ * struct:
-+ *
-+ * 1) mmio registers (IORESOURCE_MEM 0, mandatory)
-+ * 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
-+ *
-+ * LOCKING:
-+ * None.
-+ *
-+ * RETURNS:
-+ * The allocated ahci_host_priv on success, otherwise an ERR_PTR value
-+ */
-+struct ahci_host_priv *ahci_platform_get_resources(
-+ struct platform_device *pdev)
- {
- struct device *dev = &pdev->dev;
-- struct ahci_platform_data *pdata = dev_get_platdata(dev);
-- const struct platform_device_id *id = platform_get_device_id(pdev);
-- struct ata_port_info pi = ahci_port_info[id ? id->driver_data : 0];
-- const struct ata_port_info *ppi[] = { &pi, NULL };
- struct ahci_host_priv *hpriv;
-- struct ata_host *host;
-- struct resource *mem;
- struct clk *clk;
-- int irq;
-- int n_ports;
-- int i;
-- int rc;
-+ int i, rc = -ENOMEM;
-
-- mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-- if (!mem) {
-- dev_err(dev, "no mmio space\n");
-- return -EINVAL;
-- }
-+ if (!devres_open_group(dev, NULL, GFP_KERNEL))
-+ return ERR_PTR(-ENOMEM);
-
-- irq = platform_get_irq(pdev, 0);
-- if (irq <= 0) {
-- dev_err(dev, "no irq\n");
-- return -EINVAL;
-- }
-+ hpriv = devres_alloc(ahci_platform_put_resources, sizeof(*hpriv),
-+ GFP_KERNEL);
-+ if (!hpriv)
-+ goto err_out;
-
-- if (pdata && pdata->ata_port_info)
-- pi = *pdata->ata_port_info;
-+ devres_add(dev, hpriv);
-
-- hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL);
-- if (!hpriv) {
-- dev_err(dev, "can't alloc ahci_host_priv\n");
-- return -ENOMEM;
-- }
--
-- hpriv->flags |= (unsigned long)pi.private_data;
--
-- hpriv->mmio = devm_ioremap(dev, mem->start, resource_size(mem));
-+ hpriv->mmio = devm_ioremap_resource(dev,
-+ platform_get_resource(pdev, IORESOURCE_MEM, 0));
- if (!hpriv->mmio) {
-- dev_err(dev, "can't map %pR\n", mem);
-- return -ENOMEM;
-+ dev_err(dev, "no mmio space\n");
-+ goto err_out;
- }
-
- 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;
-+ goto err_out;
- hpriv->target_pwr = NULL;
- }
-
-@@ -277,33 +277,62 @@ static int ahci_probe(struct platform_device *pdev)
- if (IS_ERR(clk)) {
- rc = PTR_ERR(clk);
- if (rc == -EPROBE_DEFER)
-- goto free_clk;
-+ goto err_out;
- break;
- }
- hpriv->clks[i] = clk;
- }
-
-- rc = ahci_platform_enable_resources(hpriv);
-- if (rc)
-- goto free_clk;
-+ devres_remove_group(dev, NULL);
-+ return hpriv;
-
-- /*
-- * Some platforms might need to prepare for mmio region access,
-- * which could be done in the following init call. So, the mmio
-- * region shouldn't be accessed before init (if provided) has
-- * returned successfully.
-- */
-- if (pdata && pdata->init) {
-- rc = pdata->init(dev, hpriv->mmio);
-- if (rc)
-- goto disable_resources;
-- }
-+err_out:
-+ devres_release_group(dev, NULL);
-+ return ERR_PTR(rc);
-+}
-+EXPORT_SYMBOL_GPL(ahci_platform_get_resources);
-+
-+/**
-+ * ahci_platform_init_host - Bring up an ahci-platform host
-+ * @pdev: platform device pointer for the host
-+ * @hpriv: ahci-host private data for the host
-+ * @pi_template: template for the ata_port_info to use
-+ * @force_port_map: param passed to ahci_save_initial_config
-+ * @mask_port_map: param passed to ahci_save_initial_config
-+ *
-+ * This function does all the usual steps needed to bring up an
-+ * ahci-platform host, note any necessary resources (ie clks, phy, etc.)
-+ * must be initialized / enabled before calling this.
-+ *
-+ * LOCKING:
-+ * None.
-+ *
-+ * RETURNS:
-+ * 0 on success otherwise a negative error code
-+ */
-+int ahci_platform_init_host(struct platform_device *pdev,
-+ struct ahci_host_priv *hpriv,
-+ const struct ata_port_info *pi_template,
-+ unsigned int force_port_map,
-+ unsigned int mask_port_map)
-+{
-+ struct device *dev = &pdev->dev;
-+ struct ata_port_info pi = *pi_template;
-+ const struct ata_port_info *ppi[] = { &pi, NULL };
-+ struct ata_host *host;
-+ int i, irq, n_ports, rc;
-
-- ahci_save_initial_config(dev, hpriv,
-- pdata ? pdata->force_port_map : 0,
-- pdata ? pdata->mask_port_map : 0);
-+ irq = platform_get_irq(pdev, 0);
-+ if (irq <= 0) {
-+ dev_err(dev, "no irq\n");
-+ return -EINVAL;
-+ }
-
- /* prepare host */
-+ hpriv->flags |= (unsigned long)pi.private_data;
-+
-+ ahci_save_initial_config(dev, hpriv, force_port_map, mask_port_map);
-+
- if (hpriv->cap & HOST_CAP_NCQ)
- pi.flags |= ATA_FLAG_NCQ;
-
-@@ -320,10 +349,8 @@ static int ahci_probe(struct platform_device *pdev)
- n_ports = max(ahci_nr_ports(hpriv->cap), fls(hpriv->port_map));
-
- host = ata_host_alloc_pinfo(dev, ppi, n_ports);
-- if (!host) {
-- rc = -ENOMEM;
-- goto pdata_exit;
-- }
-+ if (!host)
-+ return -ENOMEM;
-
- host->private_data = hpriv;
-
-@@ -338,7 +365,8 @@ static int ahci_probe(struct platform_device *pdev)
- for (i = 0; i < host->n_ports; i++) {
- struct ata_port *ap = host->ports[i];
-
-- ata_port_desc(ap, "mmio %pR", mem);
-+ ata_port_desc(ap, "mmio %pR",
-+ platform_get_resource(pdev, IORESOURCE_MEM, 0));
- ata_port_desc(ap, "port 0x%x", 0x100 + ap->port_no * 0x80);
-
- /* set enclosure management message type */
-@@ -352,13 +380,53 @@ static int ahci_probe(struct platform_device *pdev)
-
- rc = ahci_reset_controller(host);
- if (rc)
-- goto pdata_exit;
-+ return rc;
-
- ahci_init_controller(host);
- ahci_print_info(host, "platform");
-
-- rc = ata_host_activate(host, irq, ahci_interrupt, IRQF_SHARED,
-- &ahci_platform_sht);
-+ return ata_host_activate(host, irq, ahci_interrupt, IRQF_SHARED,
-+ &ahci_platform_sht);
-+}
-+EXPORT_SYMBOL_GPL(ahci_platform_init_host);
-+
-+static int ahci_probe(struct platform_device *pdev)
-+{
-+ struct device *dev = &pdev->dev;
-+ struct ahci_platform_data *pdata = dev_get_platdata(dev);
-+ const struct platform_device_id *id = platform_get_device_id(pdev);
-+ const struct ata_port_info *pi_template;
-+ struct ahci_host_priv *hpriv;
-+ int rc;
-+
-+ hpriv = ahci_platform_get_resources(pdev);
-+ if (IS_ERR(hpriv))
-+ return PTR_ERR(hpriv);
-+
-+ rc = ahci_platform_enable_resources(hpriv);
-+ if (rc)
-+ return rc;
-+
-+ /*
-+ * Some platforms might need to prepare for mmio region access,
-+ * which could be done in the following init call. So, the mmio
-+ * region shouldn't be accessed before init (if provided) has
-+ * returned successfully.
-+ */
-+ if (pdata && pdata->init) {
-+ rc = pdata->init(dev, hpriv->mmio);
-+ if (rc)
-+ goto disable_resources;
-+ }
-+
-+ if (pdata && pdata->ata_port_info)
-+ pi_template = pdata->ata_port_info;
-+ else
-+ pi_template = &ahci_port_info[id ? id->driver_data : 0];
-+
-+ rc = ahci_platform_init_host(pdev, hpriv, pi_template,
-+ pdata ? pdata->force_port_map : 0,
-+ pdata ? pdata->mask_port_map : 0);
- if (rc)
- goto pdata_exit;
-
-@@ -368,8 +436,6 @@ static int ahci_probe(struct platform_device *pdev)
- pdata->exit(dev);
- disable_resources:
- ahci_platform_disable_resources(hpriv);
--free_clk:
-- ahci_put_clks(hpriv);
- return rc;
- }
-
-@@ -383,7 +449,6 @@ static void ahci_host_stop(struct ata_host *host)
- pdata->exit(dev);
-
- ahci_platform_disable_resources(hpriv);
-- ahci_put_clks(hpriv);
- }
-
- #ifdef CONFIG_PM_SLEEP
-diff --git a/include/linux/ahci_platform.h b/include/linux/ahci_platform.h
-index b674b01..b80c51c 100644
---- a/include/linux/ahci_platform.h
-+++ b/include/linux/ahci_platform.h
-@@ -20,7 +20,14 @@
- struct device;
- struct ata_port_info;
- struct ahci_host_priv;
-+struct platform_device;
-
-+/*
-+ * Note ahci_platform_data is deprecated, it is only kept around for use
-+ * by the old da850 and spear13xx ahci code.
-+ * New drivers should instead declare their own platform_driver struct, and
-+ * use ahci_platform* functions in their own probe, suspend and resume methods.
-+ */
- struct ahci_platform_data {
- int (*init)(struct device *dev, void __iomem *addr);
- void (*exit)(struct device *dev);
-@@ -35,5 +42,12 @@ struct ahci_platform_data {
- void ahci_platform_disable_clks(struct ahci_host_priv *hpriv);
- int ahci_platform_enable_resources(struct ahci_host_priv *hpriv);
- void ahci_platform_disable_resources(struct ahci_host_priv *hpriv);
-+struct ahci_host_priv *ahci_platform_get_resources(
-+ struct platform_device *pdev);
-+int ahci_platform_init_host(struct platform_device *pdev,
-+ struct ahci_host_priv *hpriv,
-+ const struct ata_port_info *pi_template,
-+ unsigned int force_port_map,
-+ unsigned int mask_port_map);
-
- #endif /* _AHCI_PLATFORM_H */
---
-1.8.5.5
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-07 12:47:57 +0000