Merge branch 'features/ahci' into for-arnd-features

9 files changed, 210 insertions, 0 deletions

diff --git a/arch/arm/mach-mx5/board-mx53_ard.c b/arch/arm/mach-mx5/board-mx53_ard.c
index 76a67c4a2a0b..ef2039eff74c 100644
--- a/arch/arm/mach-mx5/board-mx53_ard.c
+++ b/arch/arm/mach-mx5/board-mx53_ard.c
@@ -234,6 +234,7 @@ static void __init mx53_ard_board_init(void)
         imx53_add_imx_i2c(1, &mx53_ard_i2c2_data);
         imx53_add_imx_i2c(2, &mx53_ard_i2c3_data);
         imx_add_gpio_keys(&ard_button_data);
+        imx53_add_ahci_imx();
 }
 
 static void __init mx53_ard_timer_init(void)
diff --git a/arch/arm/mach-mx5/board-mx53_loco.c b/arch/arm/mach-mx5/board-mx53_loco.c
index 4e1d51d252dc..940aac932fa3 100644
--- a/arch/arm/mach-mx5/board-mx53_loco.c
+++ b/arch/arm/mach-mx5/board-mx53_loco.c
@@ -273,6 +273,7 @@ static void __init mx53_loco_board_init(void)
         imx53_add_sdhci_esdhc_imx(2, &mx53_loco_sd3_data);
         imx_add_gpio_keys(&loco_button_data);
         gpio_led_register_device(-1, &mx53loco_leds_data);
+        imx53_add_ahci_imx();
 }
 
 static void __init mx53_loco_timer_init(void)
diff --git a/arch/arm/mach-mx5/board-mx53_smd.c b/arch/arm/mach-mx5/board-mx53_smd.c
index bc02894eafef..efcab68840ae 100644
--- a/arch/arm/mach-mx5/board-mx53_smd.c
+++ b/arch/arm/mach-mx5/board-mx53_smd.c
@@ -35,6 +35,7 @@
 #include "devices-imx53.h"
 
 #define SMD_FEC_PHY_RST         IMX_GPIO_NR(7, 6)
+#define MX53_SMD_SATA_PWR_EN    IMX_GPIO_NR(3, 3)
 
 static iomux_v3_cfg_t mx53_smd_pads[] = {
         MX53_PAD_CSI0_DAT10__UART1_TXD_MUX,
@@ -111,6 +112,19 @@ static const struct imxi2c_platform_data mx53_smd_i2c_data __initconst = {
         .bitrate = 100000,
 };
 
+static inline void mx53_smd_ahci_pwr_on(void)
+{
+        int ret;
+
+        /* Enable SATA PWR */
+        ret = gpio_request_one(MX53_SMD_SATA_PWR_EN,
+                        GPIOF_DIR_OUT | GPIOF_INIT_HIGH, "ahci-sata-pwr");
+        if (ret) {
+                pr_err("failed to enable SATA_PWR_EN: %d\n", ret);
+                return;
+        }
+}
+
 static void __init mx53_smd_board_init(void)
 {
         imx53_soc_init();
@@ -125,6 +139,8 @@ static void __init mx53_smd_board_init(void)
         imx53_add_sdhci_esdhc_imx(0, NULL);
         imx53_add_sdhci_esdhc_imx(1, NULL);
         imx53_add_sdhci_esdhc_imx(2, NULL);
+        mx53_smd_ahci_pwr_on();
+        imx53_add_ahci_imx();
 }
 
 static void __init mx53_smd_timer_init(void)
diff --git a/arch/arm/mach-mx5/clock-mx51-mx53.c b/arch/arm/mach-mx5/clock-mx51-mx53.c
index f7bf996f463b..1ef7e97e0015 100644
--- a/arch/arm/mach-mx5/clock-mx51-mx53.c
+++ b/arch/arm/mach-mx5/clock-mx51-mx53.c
@@ -1401,6 +1401,22 @@ static struct clk esdhc4_mx53_clk = {
         .secondary = &esdhc4_ipg_clk,
 };
 
+static struct clk sata_clk = {
+        .parent = &ipg_clk,
+        .enable = _clk_max_enable,
+        .enable_reg = MXC_CCM_CCGR4,
+        .enable_shift = MXC_CCM_CCGRx_CG1_OFFSET,
+        .disable = _clk_max_disable,
+};
+
+static struct clk ahci_phy_clk = {
+        .parent = &usb_phy1_clk,
+};
+
+static struct clk ahci_dma_clk = {
+        .parent = &ahb_clk,
+};
+
 DEFINE_CLOCK(mipi_esc_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG5_OFFSET, NULL, NULL, NULL, &pll2_sw_clk);
 DEFINE_CLOCK(mipi_hsc2_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG4_OFFSET, NULL, NULL, &mipi_esc_clk, &pll2_sw_clk);
 DEFINE_CLOCK(mipi_hsc1_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG3_OFFSET, NULL, NULL, &mipi_hsc2_clk, &pll2_sw_clk);
@@ -1507,6 +1523,9 @@ static struct clk_lookup mx53_lookups[] = {
         _REGISTER_CLOCK("imx-ssi.1", NULL, ssi2_clk)
         _REGISTER_CLOCK("imx-ssi.2", NULL, ssi3_clk)
         _REGISTER_CLOCK("imx-keypad", NULL, dummy_clk)
+        _REGISTER_CLOCK("imx53-ahci.0", "ahci", sata_clk)
+        _REGISTER_CLOCK("imx53-ahci.0", "ahci_phy", ahci_phy_clk)
+        _REGISTER_CLOCK("imx53-ahci.0", "ahci_dma", ahci_dma_clk)
 };
 
 static void clk_tree_init(void)
diff --git a/arch/arm/mach-mx5/devices-imx53.h b/arch/arm/mach-mx5/devices-imx53.h
index c27fe8bb4762..1ab399e73caa 100644
--- a/arch/arm/mach-mx5/devices-imx53.h
+++ b/arch/arm/mach-mx5/devices-imx53.h
@@ -40,3 +40,5 @@ extern const struct imx_imx_ssi_data imx53_imx_ssi_data[];
 extern const struct imx_imx_keypad_data imx53_imx_keypad_data;
 #define imx53_add_imx_keypad(pdata)     \
         imx_add_imx_keypad(&imx53_imx_keypad_data, pdata)
+
+extern struct platform_device *__init imx53_add_ahci_imx(void);
diff --git a/arch/arm/plat-mxc/devices/Kconfig b/arch/arm/plat-mxc/devices/Kconfig
index bd294add932c..f63887ba88b4 100644
--- a/arch/arm/plat-mxc/devices/Kconfig
+++ b/arch/arm/plat-mxc/devices/Kconfig
@@ -76,3 +76,7 @@ config IMX_HAVE_PLATFORM_SDHCI_ESDHC_IMX
 
 config IMX_HAVE_PLATFORM_SPI_IMX
         bool
+
+config IMX_HAVE_PLATFORM_AHCI
+        bool
+        default y if ARCH_MX53
diff --git a/arch/arm/plat-mxc/devices/Makefile b/arch/arm/plat-mxc/devices/Makefile
index b41bf972b54b..e858ad92c3ec 100644
--- a/arch/arm/plat-mxc/devices/Makefile
+++ b/arch/arm/plat-mxc/devices/Makefile
@@ -25,3 +25,4 @@ obj-$(CONFIG_IMX_HAVE_PLATFORM_MXC_RTC) += platform-mxc_rtc.o
 obj-$(CONFIG_IMX_HAVE_PLATFORM_MXC_W1) += platform-mxc_w1.o
 obj-$(CONFIG_IMX_HAVE_PLATFORM_SDHCI_ESDHC_IMX) += platform-sdhci-esdhc-imx.o
 obj-$(CONFIG_IMX_HAVE_PLATFORM_SPI_IMX) +=  platform-spi_imx.o
+obj-$(CONFIG_IMX_HAVE_PLATFORM_AHCI) +=  platform-ahci-imx.o
diff --git a/arch/arm/plat-mxc/devices/platform-ahci-imx.c b/arch/arm/plat-mxc/devices/platform-ahci-imx.c
new file mode 100644
index 000000000000..d8a56aee521b
--- /dev/null
+++ b/arch/arm/plat-mxc/devices/platform-ahci-imx.c
@@ -0,0 +1,156 @@
+/*
+ * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <linux/io.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/device.h>
+#include <linux/dma-mapping.h>
+#include <asm/sizes.h>
+#include <mach/hardware.h>
+#include <mach/devices-common.h>
+
+#define imx_ahci_imx_data_entry_single(soc, _devid)             \
+        {                                                               \
+                .devid = _devid,                                        \
+                .iobase = soc ## _SATA_BASE_ADDR,                       \
+                .irq = soc ## _INT_SATA,                                \
+        }
+
+#ifdef CONFIG_SOC_IMX53
+const struct imx_ahci_imx_data imx53_ahci_imx_data __initconst =
+        imx_ahci_imx_data_entry_single(MX53, "imx53-ahci");
+#endif
+
+enum {
+        HOST_CAP = 0x00,
+        HOST_CAP_SSS = (1 << 27), /* Staggered Spin-up */
+        HOST_PORTS_IMPL = 0x0c,
+        HOST_TIMER1MS = 0xe0, /* Timer 1-ms */
+};
+
+static struct clk *sata_clk, *sata_ref_clk;
+
+/* AHCI module Initialization, if return 0, initialization is successful. */
+static int imx_sata_init(struct device *dev, void __iomem *addr)
+{
+        u32 tmpdata;
+        int ret = 0;
+        struct clk *clk;
+
+        sata_clk = clk_get(dev, "ahci");
+        if (IS_ERR(sata_clk)) {
+                dev_err(dev, "no sata clock.\n");
+                return PTR_ERR(sata_clk);
+        }
+        ret = clk_enable(sata_clk);
+        if (ret) {
+                dev_err(dev, "can't enable sata clock.\n");
+                goto put_sata_clk;
+        }
+
+        /* Get the AHCI SATA PHY CLK */
+        sata_ref_clk = clk_get(dev, "ahci_phy");
+        if (IS_ERR(sata_ref_clk)) {
+                dev_err(dev, "no sata ref clock.\n");
+                ret = PTR_ERR(sata_ref_clk);
+                goto release_sata_clk;
+        }
+        ret = clk_enable(sata_ref_clk);
+        if (ret) {
+                dev_err(dev, "can't enable sata ref clock.\n");
+                goto put_sata_ref_clk;
+        }
+
+        /* Get the AHB clock rate, and configure the TIMER1MS reg later */
+        clk = clk_get(dev, "ahci_dma");
+        if (IS_ERR(clk)) {
+                dev_err(dev, "no dma clock.\n");
+                ret = PTR_ERR(clk);
+                goto release_sata_ref_clk;
+        }
+        tmpdata = clk_get_rate(clk) / 1000;
+        clk_put(clk);
+
+        writel(tmpdata, addr + HOST_TIMER1MS);
+
+        tmpdata = readl(addr + HOST_CAP);
+        if (!(tmpdata & HOST_CAP_SSS)) {
+                tmpdata |= HOST_CAP_SSS;
+                writel(tmpdata, addr + HOST_CAP);
+        }
+
+        if (!(readl(addr + HOST_PORTS_IMPL) & 0x1))
+                writel((readl(addr + HOST_PORTS_IMPL) | 0x1),
+                        addr + HOST_PORTS_IMPL);
+
+        return 0;
+
+release_sata_ref_clk:
+        clk_disable(sata_ref_clk);
+put_sata_ref_clk:
+        clk_put(sata_ref_clk);
+release_sata_clk:
+        clk_disable(sata_clk);
+put_sata_clk:
+        clk_put(sata_clk);
+
+        return ret;
+}
+
+static void imx_sata_exit(struct device *dev)
+{
+        clk_disable(sata_ref_clk);
+        clk_put(sata_ref_clk);
+
+        clk_disable(sata_clk);
+        clk_put(sata_clk);
+
+}
+struct platform_device *__init imx_add_ahci_imx(
+                const struct imx_ahci_imx_data *data,
+                const struct ahci_platform_data *pdata)
+{
+        struct resource res[] = {
+                {
+                        .start = data->iobase,
+                        .end = data->iobase + SZ_4K - 1,
+                        .flags = IORESOURCE_MEM,
+                }, {
+                        .start = data->irq,
+                        .end = data->irq,
+                        .flags = IORESOURCE_IRQ,
+                },
+        };
+
+        return imx_add_platform_device_dmamask(data->devid, 0,
+                        res, ARRAY_SIZE(res),
+                        pdata, sizeof(*pdata),  DMA_BIT_MASK(32));
+}
+
+struct platform_device *__init imx53_add_ahci_imx(void)
+{
+        struct ahci_platform_data pdata = {
+                .init = imx_sata_init,
+                .exit = imx_sata_exit,
+        };
+
+        return imx_add_ahci_imx(&imx53_ahci_imx_data, &pdata);
+}
diff --git a/arch/arm/plat-mxc/include/mach/devices-common.h b/arch/arm/plat-mxc/include/mach/devices-common.h
index 524538aabc4b..f04e063f355d 100644
--- a/arch/arm/plat-mxc/include/mach/devices-common.h
+++ b/arch/arm/plat-mxc/include/mach/devices-common.h
@@ -301,3 +301,13 @@ struct platform_device *__init imx_add_spi_imx(
 struct platform_device *imx_add_imx_dma(void);
 struct platform_device *imx_add_imx_sdma(char *name,
         resource_size_t iobase, int irq, struct sdma_platform_data *pdata);
+
+#include <linux/ahci_platform.h>
+struct imx_ahci_imx_data {
+        const char *devid;
+        resource_size_t iobase;
+        resource_size_t irq;
+};
+struct platform_device *__init imx_add_ahci_imx(
+                const struct imx_ahci_imx_data *data,
+                const struct ahci_platform_data *pdata);