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authorLinus Torvalds <torvalds@linux-foundation.org>2013-05-02 09:38:16 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-05-02 09:38:16 -0700
commit99c6bcf46d2233d33e441834e958ed0bc22b190a (patch)
tree25abf5e856bc0f08d75e623715eb5acc4d4de2b2 /arch/arm/mach-cns3xxx/core.c
parent97b1007a2924aaa9126398623f6755a8c3c6a616 (diff)
parent2fdfe1c26fb9f24cfdf124384abb35396ca2cd3f (diff)
Merge tag 'multiplatform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC multiplatform updates from Olof Johansson: "More multiplatform enablement for ARM platforms. The ones converted in this branch are: - bcm2835 - cns3xxx - sirf - nomadik - msx - spear - tegra - ux500 We're getting close to having most of them converted! One of the larger platforms remaining is Samsung Exynos, and there are a bunch of supporting patches in this merge window for it. There was a patch in this branch to a early version of multiplatform conversion, but it ended up being reverted due to need of more bake time. The revert commit is part of the branch since it would have required rebasing multiple dependent branches and they were stable by then" * tag 'multiplatform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (70 commits) mmc: sdhci-s3c: Fix operation on non-single image Samsung platforms clocksource: nomadik-mtu: fix up clocksource/timer Revert "ARM: exynos: enable multiplatform support" ARM: SPEAr13xx: Fix typo "ARCH_HAVE_CPUFREQ" ARM: exynos: enable multiplatform support rtc: s3c: make header file local mtd: onenand/samsung: make regs-onenand.h file local thermal/exynos: remove unnecessary header inclusions mmc: sdhci-s3c: remove platform dependencies ARM: samsung: move mfc device definition to s5p-dev-mfc.c ARM: exynos: move debug-macro.S to include/debug/ ARM: exynos: prepare for sparse IRQ ARM: exynos: introduce EXYNOS_ATAGS symbol ARM: tegra: build assembly files with -march=armv7-a ARM: Push selects for TWD/SCU into machine entries ARM: ux500: build hotplug.o for ARMv7-a ARM: ux500: move to multiplatform ARM: ux500: make remaining headers local ARM: ux500: make irqs.h local to platform ARM: ux500: get rid of <mach/[hardware|db8500-regs].h> ...
Diffstat (limited to 'arch/arm/mach-cns3xxx/core.c')
-rw-r--r--arch/arm/mach-cns3xxx/core.c121
1 files changed, 120 insertions, 1 deletions
diff --git a/arch/arm/mach-cns3xxx/core.c b/arch/arm/mach-cns3xxx/core.c
index 126f74f6087c..e38b279f402c 100644
--- a/arch/arm/mach-cns3xxx/core.c
+++ b/arch/arm/mach-cns3xxx/core.c
@@ -13,12 +13,18 @@
#include <linux/clockchips.h>
#include <linux/io.h>
#include <linux/irqchip/arm-gic.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/usb/ehci_pdriver.h>
+#include <linux/usb/ohci_pdriver.h>
+#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/time.h>
#include <asm/mach/irq.h>
#include <asm/hardware/cache-l2x0.h>
-#include <mach/cns3xxx.h>
+#include "cns3xxx.h"
#include "core.h"
+#include "pm.h"
static struct map_desc cns3xxx_io_desc[] __initdata = {
{
@@ -256,3 +262,116 @@ void __init cns3xxx_l2x0_init(void)
}
#endif /* CONFIG_CACHE_L2X0 */
+
+static int csn3xxx_usb_power_on(struct platform_device *pdev)
+{
+ /*
+ * EHCI and OHCI share the same clock and power,
+ * resetting twice would cause the 1st controller been reset.
+ * Therefore only do power up at the first up device, and
+ * power down at the last down device.
+ *
+ * Set USB AHB INCR length to 16
+ */
+ if (atomic_inc_return(&usb_pwr_ref) == 1) {
+ cns3xxx_pwr_power_up(1 << PM_PLL_HM_PD_CTRL_REG_OFFSET_PLL_USB);
+ cns3xxx_pwr_clk_en(1 << PM_CLK_GATE_REG_OFFSET_USB_HOST);
+ cns3xxx_pwr_soft_rst(1 << PM_SOFT_RST_REG_OFFST_USB_HOST);
+ __raw_writel((__raw_readl(MISC_CHIP_CONFIG_REG) | (0X2 << 24)),
+ MISC_CHIP_CONFIG_REG);
+ }
+
+ return 0;
+}
+
+static void csn3xxx_usb_power_off(struct platform_device *pdev)
+{
+ /*
+ * EHCI and OHCI share the same clock and power,
+ * resetting twice would cause the 1st controller been reset.
+ * Therefore only do power up at the first up device, and
+ * power down at the last down device.
+ */
+ if (atomic_dec_return(&usb_pwr_ref) == 0)
+ cns3xxx_pwr_clk_dis(1 << PM_CLK_GATE_REG_OFFSET_USB_HOST);
+}
+
+static struct usb_ehci_pdata cns3xxx_usb_ehci_pdata = {
+ .power_on = csn3xxx_usb_power_on,
+ .power_off = csn3xxx_usb_power_off,
+};
+
+static struct usb_ohci_pdata cns3xxx_usb_ohci_pdata = {
+ .num_ports = 1,
+ .power_on = csn3xxx_usb_power_on,
+ .power_off = csn3xxx_usb_power_off,
+};
+
+static struct of_dev_auxdata cns3xxx_auxdata[] __initconst = {
+ { "intel,usb-ehci", CNS3XXX_USB_BASE, "ehci-platform", &cns3xxx_usb_ehci_pdata },
+ { "intel,usb-ohci", CNS3XXX_USB_OHCI_BASE, "ohci-platform", &cns3xxx_usb_ohci_pdata },
+ { "cavium,cns3420-ahci", CNS3XXX_SATA2_BASE, "ahci", NULL },
+ { "cavium,cns3420-sdhci", CNS3XXX_SDIO_BASE, "ahci", NULL },
+ {},
+};
+
+static void __init cns3xxx_init(void)
+{
+ struct device_node *dn;
+
+ cns3xxx_l2x0_init();
+
+ dn = of_find_compatible_node(NULL, NULL, "cavium,cns3420-ahci");
+ if (of_device_is_available(dn)) {
+ u32 tmp;
+
+ tmp = __raw_readl(MISC_SATA_POWER_MODE);
+ tmp |= 0x1 << 16; /* Disable SATA PHY 0 from SLUMBER Mode */
+ tmp |= 0x1 << 17; /* Disable SATA PHY 1 from SLUMBER Mode */
+ __raw_writel(tmp, MISC_SATA_POWER_MODE);
+
+ /* Enable SATA PHY */
+ cns3xxx_pwr_power_up(0x1 << PM_PLL_HM_PD_CTRL_REG_OFFSET_SATA_PHY0);
+ cns3xxx_pwr_power_up(0x1 << PM_PLL_HM_PD_CTRL_REG_OFFSET_SATA_PHY1);
+
+ /* Enable SATA Clock */
+ cns3xxx_pwr_clk_en(0x1 << PM_CLK_GATE_REG_OFFSET_SATA);
+
+ /* De-Asscer SATA Reset */
+ cns3xxx_pwr_soft_rst(CNS3XXX_PWR_SOFTWARE_RST(SATA));
+ }
+
+ dn = of_find_compatible_node(NULL, NULL, "cavium,cns3420-sdhci");
+ if (of_device_is_available(dn)) {
+ u32 __iomem *gpioa = IOMEM(CNS3XXX_MISC_BASE_VIRT + 0x0014);
+ u32 gpioa_pins = __raw_readl(gpioa);
+
+ /* MMC/SD pins share with GPIOA */
+ gpioa_pins |= 0x1fff0004;
+ __raw_writel(gpioa_pins, gpioa);
+
+ cns3xxx_pwr_clk_en(CNS3XXX_PWR_CLK_EN(SDIO));
+ cns3xxx_pwr_soft_rst(CNS3XXX_PWR_SOFTWARE_RST(SDIO));
+ }
+
+ pm_power_off = cns3xxx_power_off;
+
+ of_platform_populate(NULL, of_default_bus_match_table,
+ cns3xxx_auxdata, NULL);
+}
+
+static const char *cns3xxx_dt_compat[] __initdata = {
+ "cavium,cns3410",
+ "cavium,cns3420",
+ NULL,
+};
+
+DT_MACHINE_START(CNS3XXX_DT, "Cavium Networks CNS3xxx")
+ .dt_compat = cns3xxx_dt_compat,
+ .nr_irqs = NR_IRQS_CNS3XXX,
+ .map_io = cns3xxx_map_io,
+ .init_irq = cns3xxx_init_irq,
+ .init_time = cns3xxx_timer_init,
+ .init_machine = cns3xxx_init,
+ .restart = cns3xxx_restart,
+MACHINE_END