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Message-ID: <1402477001-31132-29-git-send-email-rogerq@ti.com>
Date: Wed, 11 Jun 2014 11:56:33 +0300
From: Roger Quadros <rogerq@...com>
To: <tony@...mide.com>, <dwmw2@...radead.org>,
<computersforpeace@...il.com>
CC: <kyungmin.park@...sung.com>, <pekon@...com>,
<ezequiel.garcia@...e-electrons.com>, <javier@...hile0.org>,
<nsekhar@...com>, <linux-omap@...r.kernel.org>,
<linux-mtd@...ts.infradead.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, Roger Quadros <rogerq@...com>
Subject: [PATCH 28/36] ARM: OMAP2+: nand: Update gpmc_nand_init() to use generic_gpmc_init()
This function should only be called by board init code for
legacy boot.
Re-arrange init order so that gpmc device is created after
the gpmc platform data is initialized by board files.
i.e. move omap_gpmc_init() to subsys_initcall.
Load gpmc platform driver later in the boot process.
i.e. move gpmc_init() to module_initcall.
NOTE: this will break legacy boot since they call gpmc_cs_*()
functions before gpmc_mem_init() is called. They will eventually
be fixed.
Signed-off-by: Roger Quadros <rogerq@...com>
---
arch/arm/mach-omap2/gpmc-nand.c | 51 ++++++++---------------------------------
arch/arm/mach-omap2/gpmc.c | 17 +++++++++-----
2 files changed, 21 insertions(+), 47 deletions(-)
diff --git a/arch/arm/mach-omap2/gpmc-nand.c b/arch/arm/mach-omap2/gpmc-nand.c
index f7491d0..42371e3 100644
--- a/arch/arm/mach-omap2/gpmc-nand.c
+++ b/arch/arm/mach-omap2/gpmc-nand.c
@@ -25,9 +25,12 @@
#define NAND_IO_SIZE 4
static struct resource gpmc_nand_resource[] = {
+/* GPMC driver will fixup all the resources, see gpmc_probe_legacy () */
{
/* GPMC I/O space */
.flags = IORESOURCE_MEM,
+ .start = 0,
+ .end = NAND_IO_SIZE - 1,
},
{
/* GPMC register space */
@@ -95,61 +98,27 @@ int gpmc_nand_init(struct omap_nand_platform_data *gpmc_nand_data,
{
int err = 0;
struct gpmc_settings s;
- struct device *dev = &gpmc_nand_device.dev;
- struct resource res;
memset(&s, 0, sizeof(struct gpmc_settings));
gpmc_nand_device.dev.platform_data = gpmc_nand_data;
- err = gpmc_cs_request(gpmc_nand_data->cs, NAND_IO_SIZE,
- (unsigned long *)&gpmc_nand_resource[0].start);
- if (err < 0) {
- dev_err(dev, "Cannot request GPMC CS %d, error %d\n",
- gpmc_nand_data->cs, err);
- return err;
- }
-
- gpmc_nand_resource[0].end = gpmc_nand_resource[0].start +
- NAND_IO_SIZE - 1;
-
- gpmc_get_mem_resource(&res);
- gpmc_nand_resource[1].start = res.start;
- gpmc_nand_resource[1].end = res.end;
-
- gpmc_nand_resource[2].start = gpmc_get_irq();
-
- if (gpmc_t) {
- err = gpmc_cs_set_timings(gpmc_nand_data->cs, gpmc_t);
- if (err < 0) {
- dev_err(dev, "Unable to set gpmc timings: %d\n", err);
- return err;
- }
- }
-
gpmc_set_legacy(gpmc_nand_data, &s);
s.device_nand = true;
- err = gpmc_cs_program_settings(gpmc_nand_data->cs, &s);
- if (err < 0)
- goto out_free_cs;
-
if (!gpmc_hwecc_bch_capable(gpmc_nand_data->ecc_opt)) {
- dev_err(dev, "Unsupported NAND ECC scheme selected\n");
+ pr_err("%s: Unsupported NAND ECC scheme selected\n", __func__);
return -EINVAL;
}
- err = platform_device_register(&gpmc_nand_device);
- if (err < 0) {
- dev_err(dev, "Unable to register NAND device\n");
- goto out_free_cs;
+ err = gpmc_generic_init(gpmc_nand_data->cs, true,
+ &s, NULL, gpmc_t,
+ &gpmc_nand_device, sizeof(*gpmc_nand_data));
+ if (err) {
+ pr_err("%s: gpmc_generic_init() failed %d\n", __func__, err);
+ return err;
}
return 0;
-
-out_free_cs:
- gpmc_cs_free(gpmc_nand_data->cs);
-
- return err;
}
diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c
index 34545ca..7a667ca 100644
--- a/arch/arm/mach-omap2/gpmc.c
+++ b/arch/arm/mach-omap2/gpmc.c
@@ -1401,9 +1401,6 @@ static void gpmc_probe_legacy(struct platform_device *pdev)
gpmc_cs_num = GPMC_CS_NUM;
gpmc_nr_waitpins = GPMC_NR_WAITPINS;
- if (!gpmc_pdata)
- return;
-
for (i = 0; i < GPMC_CS_NUM; i++) {
cs = &gpmc_pdata->cs[i];
if (!cs->valid)
@@ -1609,6 +1606,12 @@ static int gpmc_probe(struct platform_device *pdev)
}
} else {
/* Legacy probing based on platform data */
+ if (!dev->platform_data) {
+ dev_err(dev, "No platform data\n");
+ rc = -EINVAL;
+ goto error;
+ }
+
gpmc_probe_legacy(pdev);
}
@@ -1669,7 +1672,7 @@ static __exit void gpmc_exit(void)
}
-omap_postcore_initcall(gpmc_init);
+module_init(gpmc_init);
module_exit(gpmc_exit);
static int __init omap_gpmc_init(void)
@@ -1691,12 +1694,14 @@ static int __init omap_gpmc_init(void)
return -ENODEV;
}
- pdev = omap_device_build(DEVICE_NAME, -1, oh, NULL, 0);
+ pdev = omap_device_build(DEVICE_NAME, -1, oh, (void *)&gpmc_pdata,
+ sizeof(gpmc_pdata));
WARN(IS_ERR(pdev), "could not build omap_device for %s\n", oh_name);
return PTR_RET(pdev);
}
-omap_postcore_initcall(omap_gpmc_init);
+/* must run after machine_init code. i.e. arch_init */
+omap_subsys_initcall(omap_gpmc_init);
/**
* gpmc_generic_init - Initialize platform data for a Chip Select
--
1.8.3.2
--
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