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author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-02 13:43:38 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-02 13:43:38 -0700 |
commit | 3883cbb6c1bda013a3ce2dbdab7dc97c52e4a232 (patch) | |
tree | 5b69f83b049d24ac81123ac954ca8c9128e48443 /arch/arm/mach-exynos/dev-ahci.c | |
parent | d2033f2c1d1de2239ded15e478ddb4028f192a15 (diff) | |
parent | 1eb92b24e243085d242cf5ffd64829bba70972e1 (diff) | |
download | blackbird-op-linux-3883cbb6c1bda013a3ce2dbdab7dc97c52e4a232.tar.gz blackbird-op-linux-3883cbb6c1bda013a3ce2dbdab7dc97c52e4a232.zip |
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.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 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), - }, -}; |