diff options
Diffstat (limited to 'arch/arm/mach-exynos/dev-ahci.c')
| -rw-r--r-- | arch/arm/mach-exynos/dev-ahci.c | 255 |
1 files changed, 0 insertions, 255 deletions
diff --git a/arch/arm/mach-exynos/dev-ahci.c b/arch/arm/mach-exynos/dev-ahci.c deleted file mode 100644 index ce1aad3..0000000 --- a/arch/arm/mach-exynos/dev-ahci.c +++ /dev/null @@ -1,255 +0,0 @@ -/* linux/arch/arm/mach-exynos4/dev-ahci.c - * - * Copyright (c) 2011 Samsung Electronics Co., Ltd. - * http://www.samsung.com - * - * EXYNOS4 - AHCI support - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/clk.h> -#include <linux/delay.h> -#include <linux/dma-mapping.h> -#include <linux/platform_device.h> -#include <linux/ahci_platform.h> - -#include <plat/cpu.h> - -#include <mach/irqs.h> -#include <mach/map.h> -#include <mach/regs-pmu.h> - -/* PHY Control Register */ -#define SATA_CTRL0 0x0 -/* PHY Link Control Register */ -#define SATA_CTRL1 0x4 -/* PHY Status Register */ -#define SATA_PHY_STATUS 0x8 - -#define SATA_CTRL0_RX_DATA_VALID(x) (x << 27) -#define SATA_CTRL0_SPEED_MODE (1 << 26) -#define SATA_CTRL0_M_PHY_CAL (1 << 19) -#define SATA_CTRL0_PHY_CMU_RST_N (1 << 10) -#define SATA_CTRL0_M_PHY_LN_RST_N (1 << 9) -#define SATA_CTRL0_PHY_POR_N (1 << 8) - -#define SATA_CTRL1_RST_PMALIVE_N (1 << 8) -#define SATA_CTRL1_RST_RXOOB_N (1 << 7) -#define SATA_CTRL1_RST_RX_N (1 << 6) -#define SATA_CTRL1_RST_TX_N (1 << 5) - -#define SATA_PHY_STATUS_CMU_OK (1 << 18) -#define SATA_PHY_STATUS_LANE_OK (1 << 16) - -#define LANE0 0x200 -#define COM_LANE 0xA00 - -#define HOST_PORTS_IMPL 0xC -#define SCLK_SATA_FREQ (67 * MHZ) - -static void __iomem *phy_base, *phy_ctrl; - -struct phy_reg { - u8 reg; - u8 val; -}; - -/* SATA PHY setup */ -static const struct phy_reg exynos4_sataphy_cmu[] = { - { 0x00, 0x06 }, { 0x02, 0x80 }, { 0x22, 0xa0 }, { 0x23, 0x42 }, - { 0x2e, 0x04 }, { 0x2f, 0x50 }, { 0x30, 0x70 }, { 0x31, 0x02 }, - { 0x32, 0x25 }, { 0x33, 0x40 }, { 0x34, 0x01 }, { 0x35, 0x40 }, - { 0x61, 0x2e }, { 0x63, 0x5e }, { 0x65, 0x42 }, { 0x66, 0xd1 }, - { 0x67, 0x20 }, { 0x68, 0x28 }, { 0x69, 0x78 }, { 0x6a, 0x04 }, - { 0x6b, 0xc8 }, { 0x6c, 0x06 }, -}; - -static const struct phy_reg exynos4_sataphy_lane[] = { - { 0x00, 0x02 }, { 0x05, 0x10 }, { 0x06, 0x84 }, { 0x07, 0x04 }, - { 0x08, 0xe0 }, { 0x10, 0x23 }, { 0x13, 0x05 }, { 0x14, 0x30 }, - { 0x15, 0x00 }, { 0x17, 0x70 }, { 0x18, 0xf2 }, { 0x19, 0x1e }, - { 0x1a, 0x18 }, { 0x1b, 0x0d }, { 0x1c, 0x08 }, { 0x50, 0x60 }, - { 0x51, 0x0f }, -}; - -static const struct phy_reg exynos4_sataphy_comlane[] = { - { 0x01, 0x20 }, { 0x03, 0x40 }, { 0x04, 0x3c }, { 0x05, 0x7d }, - { 0x06, 0x1d }, { 0x07, 0xcf }, { 0x08, 0x05 }, { 0x09, 0x63 }, - { 0x0a, 0x29 }, { 0x0b, 0xc4 }, { 0x0c, 0x01 }, { 0x0d, 0x03 }, - { 0x0e, 0x28 }, { 0x0f, 0x98 }, { 0x10, 0x19 }, { 0x13, 0x80 }, - { 0x14, 0xf0 }, { 0x15, 0xd0 }, { 0x39, 0xa0 }, { 0x3a, 0xa0 }, - { 0x3b, 0xa0 }, { 0x3c, 0xa0 }, { 0x3d, 0xa0 }, { 0x3e, 0xa0 }, - { 0x3f, 0xa0 }, { 0x40, 0x42 }, { 0x42, 0x80 }, { 0x43, 0x58 }, - { 0x45, 0x44 }, { 0x46, 0x5c }, { 0x47, 0x86 }, { 0x48, 0x8d }, - { 0x49, 0xd0 }, { 0x4a, 0x09 }, { 0x4b, 0x90 }, { 0x4c, 0x07 }, - { 0x4d, 0x40 }, { 0x51, 0x20 }, { 0x52, 0x32 }, { 0x7f, 0xd8 }, - { 0x80, 0x1a }, { 0x81, 0xff }, { 0x82, 0x11 }, { 0x83, 0x00 }, - { 0x87, 0xf0 }, { 0x87, 0xff }, { 0x87, 0xff }, { 0x87, 0xff }, - { 0x87, 0xff }, { 0x8c, 0x1c }, { 0x8d, 0xc2 }, { 0x8e, 0xc3 }, - { 0x8f, 0x3f }, { 0x90, 0x0a }, { 0x96, 0xf8 }, -}; - -static int wait_for_phy_ready(void __iomem *reg, unsigned long bit) -{ - unsigned long timeout; - - /* wait for maximum of 3 sec */ - timeout = jiffies + msecs_to_jiffies(3000); - while (!(__raw_readl(reg) & bit)) { - if (time_after(jiffies, timeout)) - return -1; - cpu_relax(); - } - return 0; -} - -static int ahci_phy_init(void __iomem *mmio) -{ - int i, ctrl0; - - for (i = 0; i < ARRAY_SIZE(exynos4_sataphy_cmu); i++) - __raw_writeb(exynos4_sataphy_cmu[i].val, - phy_base + (exynos4_sataphy_cmu[i].reg * 4)); - - for (i = 0; i < ARRAY_SIZE(exynos4_sataphy_lane); i++) - __raw_writeb(exynos4_sataphy_lane[i].val, - phy_base + (LANE0 + exynos4_sataphy_lane[i].reg) * 4); - - for (i = 0; i < ARRAY_SIZE(exynos4_sataphy_comlane); i++) - __raw_writeb(exynos4_sataphy_comlane[i].val, - phy_base + (COM_LANE + exynos4_sataphy_comlane[i].reg) * 4); - - __raw_writeb(0x07, phy_base); - - ctrl0 = __raw_readl(phy_ctrl + SATA_CTRL0); - ctrl0 |= SATA_CTRL0_PHY_CMU_RST_N; - __raw_writel(ctrl0, phy_ctrl + SATA_CTRL0); - - if (wait_for_phy_ready(phy_ctrl + SATA_PHY_STATUS, - SATA_PHY_STATUS_CMU_OK) < 0) { - printk(KERN_ERR "PHY CMU not ready\n"); - return -EBUSY; - } - - __raw_writeb(0x03, phy_base + (COM_LANE * 4)); - - ctrl0 = __raw_readl(phy_ctrl + SATA_CTRL0); - ctrl0 |= SATA_CTRL0_M_PHY_LN_RST_N; - __raw_writel(ctrl0, phy_ctrl + SATA_CTRL0); - - if (wait_for_phy_ready(phy_ctrl + SATA_PHY_STATUS, - SATA_PHY_STATUS_LANE_OK) < 0) { - printk(KERN_ERR "PHY LANE not ready\n"); - return -EBUSY; - } - - ctrl0 = __raw_readl(phy_ctrl + SATA_CTRL0); - ctrl0 |= SATA_CTRL0_M_PHY_CAL; - __raw_writel(ctrl0, phy_ctrl + SATA_CTRL0); - - return 0; -} - -static int exynos4_ahci_init(struct device *dev, void __iomem *mmio) -{ - struct clk *clk_sata, *clk_sataphy, *clk_sclk_sata; - int val, ret; - - phy_base = ioremap(EXYNOS4_PA_SATAPHY, SZ_64K); - if (!phy_base) { - dev_err(dev, "failed to allocate memory for SATA PHY\n"); - return -ENOMEM; - } - - phy_ctrl = ioremap(EXYNOS4_PA_SATAPHY_CTRL, SZ_16); - if (!phy_ctrl) { - dev_err(dev, "failed to allocate memory for SATA PHY CTRL\n"); - ret = -ENOMEM; - goto err1; - } - - clk_sata = clk_get(dev, "sata"); - if (IS_ERR(clk_sata)) { - dev_err(dev, "failed to get sata clock\n"); - ret = PTR_ERR(clk_sata); - clk_sata = NULL; - goto err2; - - } - clk_enable(clk_sata); - - clk_sataphy = clk_get(dev, "sataphy"); - if (IS_ERR(clk_sataphy)) { - dev_err(dev, "failed to get sataphy clock\n"); - ret = PTR_ERR(clk_sataphy); - clk_sataphy = NULL; - goto err3; - } - clk_enable(clk_sataphy); - - clk_sclk_sata = clk_get(dev, "sclk_sata"); - if (IS_ERR(clk_sclk_sata)) { - dev_err(dev, "failed to get sclk_sata\n"); - ret = PTR_ERR(clk_sclk_sata); - clk_sclk_sata = NULL; - goto err4; - } - clk_enable(clk_sclk_sata); - clk_set_rate(clk_sclk_sata, SCLK_SATA_FREQ); - - __raw_writel(S5P_PMU_SATA_PHY_CONTROL_EN, S5P_PMU_SATA_PHY_CONTROL); - - /* Enable PHY link control */ - val = SATA_CTRL1_RST_PMALIVE_N | SATA_CTRL1_RST_RXOOB_N | - SATA_CTRL1_RST_RX_N | SATA_CTRL1_RST_TX_N; - __raw_writel(val, phy_ctrl + SATA_CTRL1); - - /* Set communication speed as 3Gbps and enable PHY power */ - val = SATA_CTRL0_RX_DATA_VALID(3) | SATA_CTRL0_SPEED_MODE | - SATA_CTRL0_PHY_POR_N; - __raw_writel(val, phy_ctrl + SATA_CTRL0); - - /* Port0 is available */ - __raw_writel(0x1, mmio + HOST_PORTS_IMPL); - - return ahci_phy_init(mmio); - -err4: - clk_disable(clk_sataphy); - clk_put(clk_sataphy); -err3: - clk_disable(clk_sata); - clk_put(clk_sata); -err2: - iounmap(phy_ctrl); -err1: - iounmap(phy_base); - - return ret; -} - -static struct ahci_platform_data exynos4_ahci_pdata = { - .init = exynos4_ahci_init, -}; - -static struct resource exynos4_ahci_resource[] = { - [0] = DEFINE_RES_MEM(EXYNOS4_PA_SATA, SZ_64K), - [1] = DEFINE_RES_IRQ(EXYNOS4_IRQ_SATA), -}; - -static u64 exynos4_ahci_dmamask = DMA_BIT_MASK(32); - -struct platform_device exynos4_device_ahci = { - .name = "ahci", - .id = -1, - .resource = exynos4_ahci_resource, - .num_resources = ARRAY_SIZE(exynos4_ahci_resource), - .dev = { - .platform_data = &exynos4_ahci_pdata, - .dma_mask = &exynos4_ahci_dmamask, - .coherent_dma_mask = DMA_BIT_MASK(32), - }, -}; |
