From patchwork Wed Jun 13 11:33:27 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [v2,05/10] ARM: OMAP2+: gpmc-onenand: provide memory as resource Date: Wed, 13 Jun 2012 01:33:27 -0000 From: Mohammed Afzal X-Patchwork-Id: 164645 Message-Id: <0f8bcea7d8fdf0a7b85cfc5a8856bb7bad28826b.1339586624.git.afzal@ti.com> To: , , , Cc: ivan.djelic@parrot.com, Afzal Mohammed Currently omap onenand driver invokes gpmc_cs_request, obtains address space allocated by gpmc to onenand. Remove this, instead use resource structure; this is now updated with address space for onenand by gpmc initialization with the help of gpmc_cs_request. And remove usage of gpmc_cs_request in onenand driver. This helps in smooth migration of gpmc to driver. Signed-off-by: Afzal Mohammed --- arch/arm/mach-omap2/gpmc-onenand.c | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-omap2/gpmc-onenand.c b/arch/arm/mach-omap2/gpmc-onenand.c index a0fa9bb..71d7c07 100644 --- a/arch/arm/mach-omap2/gpmc-onenand.c +++ b/arch/arm/mach-omap2/gpmc-onenand.c @@ -23,11 +23,19 @@ #include #include +#define ONENAND_IO_SIZE SZ_128K + static struct omap_onenand_platform_data *gpmc_onenand_data; +static struct resource gpmc_onenand_resource = { + .flags = IORESOURCE_MEM, +}; + static struct platform_device gpmc_onenand_device = { .name = "omap2-onenand", .id = -1, + .num_resources = 1, + .resource = &gpmc_onenand_resource, }; static int omap2_onenand_set_async_mode(int cs, void __iomem *onenand_base) @@ -390,6 +398,8 @@ static int gpmc_onenand_setup(void __iomem *onenand_base, int *freq_ptr) void __init gpmc_onenand_init(struct omap_onenand_platform_data *_onenand_data) { + int err; + gpmc_onenand_data = _onenand_data; gpmc_onenand_data->onenand_setup = gpmc_onenand_setup; gpmc_onenand_device.dev.platform_data = gpmc_onenand_data; @@ -401,8 +411,19 @@ void __init gpmc_onenand_init(struct omap_onenand_platform_data *_onenand_data) gpmc_onenand_data->flags |= ONENAND_SYNC_READ; } + err = gpmc_cs_request(gpmc_onenand_data->cs, ONENAND_IO_SIZE, + (unsigned long *)&gpmc_onenand_resource.start); + if (err < 0) { + pr_err("%s: Cannot request GPMC CS\n", __func__); + return; + } + + gpmc_onenand_resource.end = gpmc_onenand_resource.start + + ONENAND_IO_SIZE - 1; + if (platform_device_register(&gpmc_onenand_device) < 0) { - printk(KERN_ERR "Unable to register OneNAND device\n"); + pr_err("%s: Unable to register OneNAND device\n", __func__); + gpmc_cs_free(gpmc_onenand_data->cs); return; } }