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mtd: hyperbus: move direct mapping setup to AM654 HBMC driver

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The Hyperbus core expects that HyperFlash is always directly mapped for
both read and write, but in reality this may not always be the case, e.g.
Renesas RPC-IF has read only direct mapping. Move the code setting up the
direct mapping from the Hyperbus core to thh TI AM554 HBMC driver.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
This commit is contained in:
Sergei Shtylyov 2020-01-29 23:37:37 +03:00 committed by Vignesh Raghavendra
parent cb6176ef25
commit b6fe8bc67d
2 changed files with 12 additions and 11 deletions
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12
drivers/mtd/hyperbus/hbmc-am654.c
View File

@ -11,6 +11,7 @@
#include <linux/mtd/mtd.h>
#include <linux/mux/consumer.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/types.h>
@ -57,8 +58,10 @@ static const struct hyperbus_ops am654_hbmc_ops = {
static int am654_hbmc_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct device *dev = &pdev->dev;
struct am654_hbmc_priv *priv;
struct resource res;
int ret;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
@ -67,6 +70,10 @@ static int am654_hbmc_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, priv);
ret = of_address_to_resource(np, 0, &res);
if (ret)
return ret;
if (of_property_read_bool(dev->of_node, "mux-controls")) {
struct mux_control *control = devm_mux_control_get(dev, NULL);
@ -88,6 +95,11 @@ static int am654_hbmc_probe(struct platform_device *pdev)
goto disable_pm;
}
priv->hbdev.map.size = resource_size(&res);
priv->hbdev.map.virt = devm_ioremap_resource(dev, &res);
if (IS_ERR(priv->hbdev.map.virt))
return PTR_ERR(priv->hbdev.map.virt);
priv->ctlr.dev = dev;
priv->ctlr.ops = &am654_hbmc_ops;
priv->hbdev.ctlr = &priv->ctlr;

11
drivers/mtd/hyperbus/hyperbus-core.c
View File

@ -10,7 +10,6 @@
#include <linux/mtd/map.h>
#include <linux/mtd/mtd.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/types.h>
static struct hyperbus_device *map_to_hbdev(struct map_info *map)
@ -62,7 +61,6 @@ int hyperbus_register_device(struct hyperbus_device *hbdev)
struct hyperbus_ctlr *ctlr;
struct device_node *np;
struct map_info *map;
struct resource res;
struct device *dev;
int ret;
@ -80,17 +78,8 @@ int hyperbus_register_device(struct hyperbus_device *hbdev)
hbdev->memtype = HYPERFLASH;
ret = of_address_to_resource(np, 0, &res);
if (ret)
return ret;
dev = ctlr->dev;
map = &hbdev->map;
map->size = resource_size(&res);
map->virt = devm_ioremap_resource(dev, &res);
if (IS_ERR(map->virt))
return PTR_ERR(map->virt);
map->name = dev_name(dev);
map->bankwidth = 2;
map->device_node = np;