From: prylowski@metasoft.pl (Rafal Prylowski)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 2/3] ep93xx: IDE driver platform support code
Date: Thu, 12 Apr 2012 14:14:12 +0200 [thread overview]
Message-ID: <4F86C714.4090605@metasoft.pl> (raw)
In-Reply-To: <4F86C63C.6030908@metasoft.pl>
Add IDE driver platform support code for ep93xx.
Signed-off-by: Rafal Prylowski <prylowski@metasoft.pl>
Cc: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ryan Mallon <rmallon@gmail.com>
---
arch/arm/mach-ep93xx/core.c | 96 +++++++++++++++++
arch/arm/mach-ep93xx/include/mach/platform.h | 3
arch/arm/mach-ep93xx/soc.h | 1
Index: linux-2.6/arch/arm/mach-ep93xx/soc.h
===================================================================
--- linux-2.6.orig/arch/arm/mach-ep93xx/soc.h
+++ linux-2.6/arch/arm/mach-ep93xx/soc.h
@@ -69,6 +69,7 @@
#define EP93XX_BOOT_ROM_BASE EP93XX_AHB_IOMEM(0x00090000)
+#define EP93XX_IDE_PHYS_BASE EP93XX_AHB_PHYS(0x000a0000)
#define EP93XX_IDE_BASE EP93XX_AHB_IOMEM(0x000a0000)
#define EP93XX_VIC1_BASE EP93XX_AHB_IOMEM(0x000b0000)
Index: linux-2.6/arch/arm/mach-ep93xx/core.c
===================================================================
--- linux-2.6.orig/arch/arm/mach-ep93xx/core.c
+++ linux-2.6/arch/arm/mach-ep93xx/core.c
@@ -868,6 +868,102 @@ static struct platform_device ep93xx_wdt
.resource = ep93xx_wdt_resources,
};
+/*************************************************************************
+ * EP93xx IDE
+ *************************************************************************/
+static struct resource ep93xx_ide_resources[] = {
+ DEFINE_RES_MEM(EP93XX_IDE_PHYS_BASE, 0x38),
+ DEFINE_RES_IRQ(IRQ_EP93XX_EXT3),
+};
+
+static struct platform_device ep93xx_ide_device = {
+ .name = "ep93xx-ide",
+ .id = -1,
+ .dev = {
+ .dma_mask = &ep93xx_ide_device.dev.coherent_dma_mask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ },
+ .num_resources = ARRAY_SIZE(ep93xx_ide_resources),
+ .resource = ep93xx_ide_resources,
+};
+
+void __init ep93xx_register_ide(void)
+{
+ platform_device_register(&ep93xx_ide_device);
+}
+
+int ep93xx_ide_acquire_gpio(struct platform_device *pdev)
+{
+ int err;
+ int i;
+
+ err = gpio_request(EP93XX_GPIO_LINE_EGPIO2, dev_name(&pdev->dev));
+ if (err)
+ return err;
+ err = gpio_request(EP93XX_GPIO_LINE_EGPIO15, dev_name(&pdev->dev));
+ if (err)
+ goto fail_egpio15;
+ for (i = 2; i < 8; i++) {
+ err = gpio_request(EP93XX_GPIO_LINE_E(i), dev_name(&pdev->dev));
+ if (err)
+ goto fail_gpio_e;
+ }
+ for (i = 4; i < 8; i++) {
+ err = gpio_request(EP93XX_GPIO_LINE_G(i), dev_name(&pdev->dev));
+ if (err)
+ goto fail_gpio_g;
+ }
+ for (i = 0; i < 8; i++) {
+ err = gpio_request(EP93XX_GPIO_LINE_H(i), dev_name(&pdev->dev));
+ if (err)
+ goto fail_gpio_h;
+ }
+
+ /* GPIO ports E[7:2], G[7:4] and H used by IDE */
+ ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_EONIDE |
+ EP93XX_SYSCON_DEVCFG_GONIDE |
+ EP93XX_SYSCON_DEVCFG_HONIDE);
+ return 0;
+
+fail_gpio_h:
+ for (--i; i >= 0; --i)
+ gpio_free(EP93XX_GPIO_LINE_H(i));
+ i = 8;
+fail_gpio_g:
+ for (--i; i >= 4; --i)
+ gpio_free(EP93XX_GPIO_LINE_G(i));
+ i = 8;
+fail_gpio_e:
+ for (--i; i >= 2; --i)
+ gpio_free(EP93XX_GPIO_LINE_E(i));
+ gpio_free(EP93XX_GPIO_LINE_EGPIO15);
+fail_egpio15:
+ gpio_free(EP93XX_GPIO_LINE_EGPIO2);
+ return err;
+}
+EXPORT_SYMBOL(ep93xx_ide_acquire_gpio);
+
+void ep93xx_ide_release_gpio(struct platform_device *pdev)
+{
+ int i;
+
+ for (i = 2; i < 8; i++)
+ gpio_free(EP93XX_GPIO_LINE_E(i));
+ for (i = 4; i < 8; i++)
+ gpio_free(EP93XX_GPIO_LINE_G(i));
+ for (i = 0; i < 8; i++)
+ gpio_free(EP93XX_GPIO_LINE_H(i));
+ gpio_free(EP93XX_GPIO_LINE_EGPIO15);
+ gpio_free(EP93XX_GPIO_LINE_EGPIO2);
+
+
+ /* GPIO ports E[7:2], G[7:4] and H used by GPIO */
+ ep93xx_devcfg_set_bits(EP93XX_SYSCON_DEVCFG_EONIDE |
+ EP93XX_SYSCON_DEVCFG_GONIDE |
+ EP93XX_SYSCON_DEVCFG_HONIDE);
+}
+EXPORT_SYMBOL(ep93xx_ide_release_gpio);
+
void __init ep93xx_init_devices(void)
{
/* Disallow access to MaverickCrunch initially */
Index: linux-2.6/arch/arm/mach-ep93xx/include/mach/platform.h
===================================================================
--- linux-2.6.orig/arch/arm/mach-ep93xx/include/mach/platform.h
+++ linux-2.6/arch/arm/mach-ep93xx/include/mach/platform.h
@@ -48,6 +48,9 @@ void ep93xx_register_i2s(void);
int ep93xx_i2s_acquire(void);
void ep93xx_i2s_release(void);
void ep93xx_register_ac97(void);
+void ep93xx_register_ide(void);
+int ep93xx_ide_acquire_gpio(struct platform_device *pdev);
+void ep93xx_ide_release_gpio(struct platform_device *pdev);
void ep93xx_init_devices(void);
extern struct sys_timer ep93xx_timer;
next prev parent reply other threads:[~2012-04-12 12:14 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-12 12:10 [PATCH v3 0/3] Add PATA host controller support for Cirrus Logic EP93xx CPU Rafal Prylowski
2012-04-12 12:13 ` [PATCH v3 1/3] PATA host controller driver for ep93xx Rafal Prylowski
2012-05-22 20:05 ` Jeff Garzik
2012-04-12 12:14 ` Rafal Prylowski [this message]
2012-04-12 17:09 ` [PATCH v3 2/3] ep93xx: IDE driver platform support code H Hartley Sweeten
2012-06-04 5:00 ` Ryan Mallon
2012-04-12 12:15 ` [PATCH v3 3/3] ep93xx: Add IDE support to edb93xx boards Rafal Prylowski
2012-06-04 5:01 ` Ryan Mallon
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