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

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;