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authorLinus Torvalds2013-07-02 22:43:38 +0200
committerLinus Torvalds2013-07-02 22:43:38 +0200
commit3883cbb6c1bda013a3ce2dbdab7dc97c52e4a232 (patch)
tree5b69f83b049d24ac81123ac954ca8c9128e48443 /arch/arm/mach-exynos/dev-ahci.c
parentMerge tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/gi... (diff)
parentARM: integrator: let pciv3 use mem/premem from device tree (diff)
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Merge tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC specific changes from Arnd Bergmann: "These changes are all to SoC-specific code, a total of 33 branches on 17 platforms were pulled into this. Like last time, Renesas sh-mobile is now the platform with the most changes, followed by OMAP and EXYNOS. Two new platforms, TI Keystone and Rockchips RK3xxx are added in this branch, both containing almost no platform specific code at all, since they are using generic subsystem interfaces for clocks, pinctrl, interrupts etc. The device drivers are getting merged through the respective subsystem maintainer trees. One more SoC (u300) is now multiplatform capable and several others (shmobile, exynos, msm, integrator, kirkwood, clps711x) are moving towards that goal with this series but need more work. Also noteworthy is the work on PCI here, which is traditionally part of the SoC specific code. With the changes done by Thomas Petazzoni, we can now more easily have PCI host controller drivers as loadable modules and keep them separate from the platform code in drivers/pci/host. This has already led to the discovery that three platforms (exynos, spear and imx) are actually using an identical PCIe host controller and will be able to share a driver once support for spear and imx is added." * tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (480 commits) ARM: integrator: let pciv3 use mem/premem from device tree ARM: integrator: set local side PCI addresses right ARM: dts: Add pcie controller node for exynos5440-ssdk5440 ARM: dts: Add pcie controller node for Samsung EXYNOS5440 SoC ARM: EXYNOS: Enable PCIe support for Exynos5440 pci: Add PCIe driver for Samsung Exynos ARM: OMAP5: voltagedomain data: remove temporary OMAP4 voltage data ARM: keystone: Move CPU bringup code to dedicated asm file ARM: multiplatform: always pick one CPU type ARM: imx: select syscon for IMX6SL ARM: keystone: select ARM_ERRATA_798181 only for SMP ARM: imx: Synertronixx scb9328 needs to select SOC_IMX1 ARM: OMAP2+: AM43x: resolve SMP related build error dmaengine: edma: enable build for AM33XX ARM: edma: Add EDMA crossbar event mux support ARM: edma: Add DT and runtime PM support to the private EDMA API dmaengine: edma: Add TI EDMA device tree binding arm: add basic support for Rockchip RK3066a boards arm: add debug uarts for rockchip rk29xx and rk3xxx series arm: Add basic clocks for Rockchip rk3066a SoCs ...
Diffstat (limited to 'arch/arm/mach-exynos/dev-ahci.c')
-rw-r--r--arch/arm/mach-exynos/dev-ahci.c255
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 ce1aad3eeeb9..000000000000
--- 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),
- },
-};