1 files changed, 193 insertions, 0 deletions

diff --git a/arch/arm/mach-spear/spear1340.c b/arch/arm/mach-spear/spear1340.c
new file mode 100644
index 000000000000..75e38644bbfb
--- /dev/null
+++ b/arch/arm/mach-spear/spear1340.c
@@ -0,0 +1,193 @@
+/*
+ * arch/arm/mach-spear13xx/spear1340.c
+ *
+ * SPEAr1340 machine source file
+ *
+ * Copyright (C) 2012 ST Microelectronics
+ * Viresh Kumar <viresh.linux@gmail.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#define pr_fmt(fmt) "SPEAr1340: " fmt
+
+#include <linux/ahci_platform.h>
+#include <linux/amba/serial.h>
+#include <linux/delay.h>
+#include <linux/dw_dmac.h>
+#include <linux/of_platform.h>
+#include <linux/irqchip.h>
+#include <asm/mach/arch.h>
+#include "generic.h"
+#include <mach/spear.h>
+
+#include "spear13xx-dma.h"
+
+/* Base addresses */
+#define SPEAR1340_SATA_BASE                     UL(0xB1000000)
+#define SPEAR1340_UART1_BASE                    UL(0xB4100000)
+
+/* Power Management Registers */
+#define SPEAR1340_PCM_CFG                       (VA_MISC_BASE + 0x100)
+#define SPEAR1340_PCM_WKUP_CFG                  (VA_MISC_BASE + 0x104)
+#define SPEAR1340_SWITCH_CTR                    (VA_MISC_BASE + 0x108)
+
+#define SPEAR1340_PERIP1_SW_RST                 (VA_MISC_BASE + 0x318)
+#define SPEAR1340_PERIP2_SW_RST                 (VA_MISC_BASE + 0x31C)
+#define SPEAR1340_PERIP3_SW_RST                 (VA_MISC_BASE + 0x320)
+
+/* PCIE - SATA configuration registers */
+#define SPEAR1340_PCIE_SATA_CFG                 (VA_MISC_BASE + 0x424)
+        /* PCIE CFG MASks */
+        #define SPEAR1340_PCIE_CFG_DEVICE_PRESENT       (1 << 11)
+        #define SPEAR1340_PCIE_CFG_POWERUP_RESET        (1 << 10)
+        #define SPEAR1340_PCIE_CFG_CORE_CLK_EN          (1 << 9)
+        #define SPEAR1340_PCIE_CFG_AUX_CLK_EN           (1 << 8)
+        #define SPEAR1340_SATA_CFG_TX_CLK_EN            (1 << 4)
+        #define SPEAR1340_SATA_CFG_RX_CLK_EN            (1 << 3)
+        #define SPEAR1340_SATA_CFG_POWERUP_RESET        (1 << 2)
+        #define SPEAR1340_SATA_CFG_PM_CLK_EN            (1 << 1)
+        #define SPEAR1340_PCIE_SATA_SEL_PCIE            (0)
+        #define SPEAR1340_PCIE_SATA_SEL_SATA            (1)
+        #define SPEAR1340_SATA_PCIE_CFG_MASK            0xF1F
+        #define SPEAR1340_PCIE_CFG_VAL  (SPEAR1340_PCIE_SATA_SEL_PCIE | \
+                        SPEAR1340_PCIE_CFG_AUX_CLK_EN | \
+                        SPEAR1340_PCIE_CFG_CORE_CLK_EN | \
+                        SPEAR1340_PCIE_CFG_POWERUP_RESET | \
+                        SPEAR1340_PCIE_CFG_DEVICE_PRESENT)
+        #define SPEAR1340_SATA_CFG_VAL  (SPEAR1340_PCIE_SATA_SEL_SATA | \
+                        SPEAR1340_SATA_CFG_PM_CLK_EN | \
+                        SPEAR1340_SATA_CFG_POWERUP_RESET | \
+                        SPEAR1340_SATA_CFG_RX_CLK_EN | \
+                        SPEAR1340_SATA_CFG_TX_CLK_EN)
+
+#define SPEAR1340_PCIE_MIPHY_CFG                (VA_MISC_BASE + 0x428)
+        #define SPEAR1340_MIPHY_OSC_BYPASS_EXT          (1 << 31)
+        #define SPEAR1340_MIPHY_CLK_REF_DIV2            (1 << 27)
+        #define SPEAR1340_MIPHY_CLK_REF_DIV4            (2 << 27)
+        #define SPEAR1340_MIPHY_CLK_REF_DIV8            (3 << 27)
+        #define SPEAR1340_MIPHY_PLL_RATIO_TOP(x)        (x << 0)
+        #define SPEAR1340_PCIE_SATA_MIPHY_CFG_SATA \
+                        (SPEAR1340_MIPHY_OSC_BYPASS_EXT | \
+                        SPEAR1340_MIPHY_CLK_REF_DIV2 | \
+                        SPEAR1340_MIPHY_PLL_RATIO_TOP(60))
+        #define SPEAR1340_PCIE_SATA_MIPHY_CFG_SATA_25M_CRYSTAL_CLK \
+                        (SPEAR1340_MIPHY_PLL_RATIO_TOP(120))
+        #define SPEAR1340_PCIE_SATA_MIPHY_CFG_PCIE \
+                        (SPEAR1340_MIPHY_OSC_BYPASS_EXT | \
+                        SPEAR1340_MIPHY_PLL_RATIO_TOP(25))
+
+static struct dw_dma_slave uart1_dma_param[] = {
+        {
+                /* Tx */
+                .cfg_hi = DWC_CFGH_DST_PER(SPEAR1340_DMA_REQ_UART1_TX),
+                .cfg_lo = 0,
+                .src_master = DMA_MASTER_MEMORY,
+                .dst_master = SPEAR1340_DMA_MASTER_UART1,
+        }, {
+                /* Rx */
+                .cfg_hi = DWC_CFGH_SRC_PER(SPEAR1340_DMA_REQ_UART1_RX),
+                .cfg_lo = 0,
+                .src_master = SPEAR1340_DMA_MASTER_UART1,
+                .dst_master = DMA_MASTER_MEMORY,
+        }
+};
+
+static struct amba_pl011_data uart1_data = {
+        .dma_filter = dw_dma_filter,
+        .dma_tx_param = &uart1_dma_param[0],
+        .dma_rx_param = &uart1_dma_param[1],
+};
+
+/* SATA device registration */
+static int sata_miphy_init(struct device *dev, void __iomem *addr)
+{
+        writel(SPEAR1340_SATA_CFG_VAL, SPEAR1340_PCIE_SATA_CFG);
+        writel(SPEAR1340_PCIE_SATA_MIPHY_CFG_SATA_25M_CRYSTAL_CLK,
+                        SPEAR1340_PCIE_MIPHY_CFG);
+        /* Switch on sata power domain */
+        writel((readl(SPEAR1340_PCM_CFG) | (0x800)), SPEAR1340_PCM_CFG);
+        msleep(20);
+        /* Disable PCIE SATA Controller reset */
+        writel((readl(SPEAR1340_PERIP1_SW_RST) & (~0x1000)),
+                        SPEAR1340_PERIP1_SW_RST);
+        msleep(20);
+
+        return 0;
+}
+
+void sata_miphy_exit(struct device *dev)
+{
+        writel(0, SPEAR1340_PCIE_SATA_CFG);
+        writel(0, SPEAR1340_PCIE_MIPHY_CFG);
+
+        /* Enable PCIE SATA Controller reset */
+        writel((readl(SPEAR1340_PERIP1_SW_RST) | (0x1000)),
+                        SPEAR1340_PERIP1_SW_RST);
+        msleep(20);
+        /* Switch off sata power domain */
+        writel((readl(SPEAR1340_PCM_CFG) & (~0x800)), SPEAR1340_PCM_CFG);
+        msleep(20);
+}
+
+int sata_suspend(struct device *dev)
+{
+        if (dev->power.power_state.event == PM_EVENT_FREEZE)
+                return 0;
+
+        sata_miphy_exit(dev);
+
+        return 0;
+}
+
+int sata_resume(struct device *dev)
+{
+        if (dev->power.power_state.event == PM_EVENT_THAW)
+                return 0;
+
+        return sata_miphy_init(dev, NULL);
+}
+
+static struct ahci_platform_data sata_pdata = {
+        .init = sata_miphy_init,
+        .exit = sata_miphy_exit,
+        .suspend = sata_suspend,
+        .resume = sata_resume,
+};
+
+/* Add SPEAr1340 auxdata to pass platform data */
+static struct of_dev_auxdata spear1340_auxdata_lookup[] __initdata = {
+        OF_DEV_AUXDATA("arasan,cf-spear1340", MCIF_CF_BASE, NULL, &cf_dma_priv),
+        OF_DEV_AUXDATA("snps,dma-spear1340", DMAC0_BASE, NULL, &dmac_plat_data),
+        OF_DEV_AUXDATA("snps,dma-spear1340", DMAC1_BASE, NULL, &dmac_plat_data),
+        OF_DEV_AUXDATA("arm,pl022", SSP_BASE, NULL, &pl022_plat_data),
+
+        OF_DEV_AUXDATA("snps,spear-ahci", SPEAR1340_SATA_BASE, NULL,
+                        &sata_pdata),
+        OF_DEV_AUXDATA("arm,pl011", SPEAR1340_UART1_BASE, NULL, &uart1_data),
+        {}
+};
+
+static void __init spear1340_dt_init(void)
+{
+        of_platform_populate(NULL, of_default_bus_match_table,
+                        spear1340_auxdata_lookup, NULL);
+}
+
+static const char * const spear1340_dt_board_compat[] = {
+        "st,spear1340",
+        "st,spear1340-evb",
+        NULL,
+};
+
+DT_MACHINE_START(SPEAR1340_DT, "ST SPEAr1340 SoC with Flattened Device Tree")
+        .smp            =       smp_ops(spear13xx_smp_ops),
+        .map_io         =       spear13xx_map_io,
+        .init_irq       =       irqchip_init,
+        .init_time      =       spear13xx_timer_init,
+        .init_machine   =       spear1340_dt_init,
+        .restart        =       spear_restart,
+        .dt_compat      =       spear1340_dt_board_compat,
+MACHINE_END