From: Roger Quadros <rogerq@ti.com>
To: <tony@atomide.com>, <computersforpeace@gmail.com>
Cc: <pekon@ti.com>, <ezequiel.garcia@free-electrons.com>,
<robertcnelson@gmail.com>, <jg1.han@samsung.com>,
<dwmw2@infradead.org>, <javier@dowhile0.org>, <nsekhar@ti.com>,
<linux-omap@vger.kernel.org>, <linux-mtd@lists.infradead.org>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
Roger Quadros <rogerq@ti.com>
Subject: [RFC PATCH 06/16] ARM: OMAP2+: gpmc: add NAND specific setup
Date: Wed, 21 May 2014 14:20:54 +0300 [thread overview]
Message-ID: <1400671264-10702-7-git-send-email-rogerq@ti.com> (raw)
In-Reply-To: <1400671264-10702-1-git-send-email-rogerq@ti.com>
Provide NAND specific resources and platform data.
Signed-off-by: Roger Quadros <rogerq@ti.com>
---
arch/arm/mach-omap2/gpmc.c | 77 ++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 77 insertions(+)
diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c
index 26b26ec..f4ee6e9 100644
--- a/arch/arm/mach-omap2/gpmc.c
+++ b/arch/arm/mach-omap2/gpmc.c
@@ -1629,6 +1629,61 @@ static int gpmc_probe_dt(struct platform_device *pdev)
}
#endif
+static int gpmc_nand_setup(struct platform_device *pdev,
+ struct gpmc_settings *settings)
+{
+ struct resource *res;
+ int rc;
+ struct omap_nand_platform_data *gpmc_nand_data;
+
+ gpmc_nand_data = pdev->dev.platform_data;
+ if (!gpmc_nand_data)
+ return -EINVAL;
+
+ res = pdev->resource;
+
+ /* setup IRQ resources */
+ res[1].start = gpmc_get_client_irq(GPMC_IRQ_FIFOEVENTENABLE);
+
+ res[2].start = gpmc_get_client_irq(GPMC_IRQ_COUNT_EVENT);
+
+ settings->device_nand = true;
+ /*
+ * Not sure why WP is explicitly turned OFF. we just moved it here
+ * as is from mach-omap2/gpmc-nand.c
+ */
+ rc = gpmc_configure(GPMC_CONFIG_WP, 0);
+ if (rc < 0)
+ return rc;
+
+ /* update register addresses in NAND platform data */
+ gpmc_update_nand_reg(&gpmc_nand_data->reg, gpmc_nand_data->cs);
+
+ return 0;
+}
+
+static int gpmc_nand_check_csdata(struct gpmc_omap_cs_data *cs)
+{
+ struct resource *res;
+
+ if (!cs->pdev)
+ return -EINVAL;
+
+ res = cs->pdev->resource;
+
+ if (cs->pdev->num_resources < 3)
+ return -EINVAL;
+
+ if (resource_type(&res[1]) != IORESOURCE_IRQ ||
+ resource_type(&res[2]) != IORESOURCE_IRQ)
+ return -EINVAL;
+
+ if (!cs->settings)
+ return -EINVAL;
+
+ return 0;
+}
+
static void gpmc_probe_legacy(struct platform_device *pdev)
{
int i, rc;
@@ -1677,6 +1732,28 @@ static void gpmc_probe_legacy(struct platform_device *pdev)
/* FIXME: When do we need to call gpmc_cs_remap()? */
skip_mem:
+ /* Customized setup based on type */
+ switch (cs->type) {
+ case GPMC_OMAP_TYPE_NAND:
+ if (gpmc_nand_check_csdata(cs)) {
+ dev_err(dev, "Invalid NAND config on CS %d\n",
+ i);
+ continue;
+ }
+
+ rc = gpmc_nand_setup(cs->pdev, cs->settings);
+ if (rc) {
+ dev_err(dev, "Error setting up NAND on CS %d\n",
+ i);
+ continue;
+ }
+ break;
+ case GPMC_OMAP_TYPE_NOR:
+ case GPMC_OMAP_TYPE_ONENAND:
+ case GPMC_OMAP_TYPE_GENERIC:
+ break;
+ }
+
if (cs->settings) {
if (gpmc_cs_program_settings(i, cs->settings)) {
dev_err(dev,
--
1.8.3.2
next prev parent reply other threads:[~2014-05-21 11:22 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-21 11:20 [RFC PATCH 00/16] OMAP: GPMC: Restructure OMAP GPMC driver (NAND) Roger Quadros
2014-05-21 11:20 ` [RFC PATCH 01/16] ARM: OMAP2+: gpmc: Add platform data Roger Quadros
2014-05-21 11:20 ` [RFC PATCH 02/16] ARM: OMAP2+: gpmc: Add gpmc timings and settings to " Roger Quadros
2014-05-21 11:20 ` [RFC PATCH 03/16] ARM: OMAP2+: gmpc: add gpmc_generic_init() Roger Quadros
2014-05-21 11:20 ` [RFC PATCH 04/16] ARM: OMAP2+: gpmc: use platform data to configure CS space and poplulate device Roger Quadros
2014-05-21 11:20 ` [RFC PATCH 05/16] ARM: OMAP2+: gpmc: Use low level read/write for context save/restore Roger Quadros
2014-05-21 11:20 ` Roger Quadros [this message]
2014-05-21 11:20 ` [RFC PATCH 07/16] ARM: OMAP2+: nand: Update gpmc_nand_init() to use generic_gpmc_init() Roger Quadros
2014-05-21 11:20 ` [RFC PATCH 08/16] mtd: nand: omap: Fix build warning Roger Quadros
2014-05-22 0:54 ` Jingoo Han
2014-05-22 8:17 ` Roger Quadros
2014-05-21 11:20 ` [RFC PATCH 09/16] mtd: nand: omap: Move IRQ handling from GPMC to NAND driver Roger Quadros
2014-05-21 11:20 ` [RFC PATCH 10/16] mtd: nand: omap: Move gpmc_update_nand_reg to nand driver Roger Quadros
2014-05-21 11:20 ` [RFC PATCH 11/16] mtd: nand: omap: Move NAND write protect code from GPMC to NAND driver Roger Quadros
2014-05-21 11:21 ` [RFC PATCH 12/16] mtd: nand: omap: Copy platform data parameters to omap_nand_info data Roger Quadros
2014-05-21 11:21 ` [RFC PATCH 13/16] mtd: nand: omap: True device tree support Roger Quadros
2014-05-21 11:21 ` [RFC PATCH 14/16] ARM: OMAP: gpmc: Update DT binding documentation Roger Quadros
2014-05-21 11:21 ` [RFC PATCH 15/16] mtd: nand: omap: " Roger Quadros
2014-05-21 11:21 ` [RFC PATCH 16/16] ARM: dts: omap3-beagle: Add NAND device Roger Quadros
2014-05-21 16:08 ` [RFC PATCH 00/16] OMAP: GPMC: Restructure OMAP GPMC driver (NAND) Ezequiel Garcia
2014-05-22 8:12 ` [RFC PATCH 00/16] OMAP: GPMC: Restructure OMAP GPMC driver (NAND) : DT binding change proposal Roger Quadros
2014-05-22 11:51 ` Javier Martinez Canillas
2014-05-22 14:46 ` Ezequiel Garcia
2014-05-23 8:16 ` Roger Quadros
2014-05-23 9:40 ` Javier Martinez Canillas
2014-05-26 7:23 ` Roger Quadros
2014-05-23 14:53 ` Tony Lindgren
2014-05-26 7:33 ` Roger Quadros
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