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authorAnton Arapov <anton@redhat.com>2012-10-29 11:15:37 +0100
committerAnton Arapov <anton@redhat.com>2012-10-29 11:15:37 +0100
commit7d558cd9c7b18e4b16953265aa0da45e63f3b968 (patch)
tree7135d5a810768c9c619346282ee9cfdf1765e225 /arch/arm/mach-ep93xx/core.c
parent985ef6b2108ed28ffd5f6630e1e0fce2e2a775f2 (diff)
downloadkernel-uprobes-f17.tar.gz
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fedora kernel: cd394142aac30b5c751f25b517572e2448695641v3.6.3-2f17
Signed-off-by: Anton Arapov <anton@redhat.com>
Diffstat (limited to 'arch/arm/mach-ep93xx/core.c')
-rw-r--r--arch/arm/mach-ep93xx/core.c96
1 files changed, 96 insertions, 0 deletions
diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c
index 4dd07a0e360..4afe52aaaff 100644
--- a/arch/arm/mach-ep93xx/core.c
+++ b/arch/arm/mach-ep93xx/core.c
@@ -797,6 +797,102 @@ static struct platform_device ep93xx_wdt_device = {
.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 */