Signed-off-by: Richard Zhu <Hong-Xing.Zhu@xxxxxxxxxxxxx> --- arch/arm/mach-mx5/board-mx53_loco.c | 78 +++++++++++++++++++++++++++++++++++ 1 files changed, 78 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-mx5/board-mx53_loco.c b/arch/arm/mach-mx5/board-mx53_loco.c index 0a18f8d..4c00033 100644 --- a/arch/arm/mach-mx5/board-mx53_loco.c +++ b/arch/arm/mach-mx5/board-mx53_loco.c @@ -23,11 +23,13 @@ #include <linux/fec.h> #include <linux/delay.h> #include <linux/gpio.h> +#include <linux/ahci_platform.h> #include <mach/common.h> #include <mach/hardware.h> #include <mach/imx-uart.h> #include <mach/iomux-mx53.h> +#include <mach/ahci_sata.h> #include <asm/mach-types.h> #include <asm/mach/arch.h> @@ -203,6 +205,81 @@ static const struct imxi2c_platform_data mx53_loco_i2c_data __initconst = { .bitrate = 100000, }; +/* HW Initialization, if return 0, initialization is successful. */ +static int sata_init(struct device *dev, void __iomem *addr) +{ + int ret = 0; + u32 tmpdata; + struct clk *clk; + struct ahci_platform_data *pdata = dev->platform_data; + + pdata->sata_clk = clk_get(dev, NULL); + if (IS_ERR(pdata->sata_clk)) { + dev_err(dev, "IMX AHCI can't get sata clock.\n"); + return PTR_ERR(pdata->sata_clk); + } + ret = clk_enable(pdata->sata_clk); + if (ret) { + dev_err(dev, "IMX AHCI can't enable sata clock.\n"); + clk_put(pdata->sata_clk); + return ret; + } + + /* FSL IMX AHCI SATA uses the internal usb phy1 clk on loco */ + if (internal_clk_initialization(dev)) + goto release_sata_clk; + + /* Get the AHB clock rate, and configure the TIMER1MS reg later */ + clk = clk_get(NULL, "ahb"); + if (IS_ERR(clk)) { + dev_err(dev, "IMX AHCI can't get AHB clock.\n"); + ret = PTR_ERR(clk); + goto release_sata_ref_clk; + } + + 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); + + tmpdata = clk_get_rate(clk) / 1000; + clk_put(clk); + writel(tmpdata, addr + HOST_TIMER1MS); + + clk = NULL; + return ret; + +release_sata_ref_clk: + internal_clk_release(dev); + +release_sata_clk: + clk_disable(pdata->sata_clk); + clk_put(pdata->sata_clk); + + clk = NULL; + return ret; +} + +static void sata_exit(struct device *dev) +{ + struct ahci_platform_data *pdata = dev->platform_data; + + internal_clk_release(dev); + + clk_disable(pdata->sata_clk); + clk_put(pdata->sata_clk); +} + +static struct ahci_platform_data sata_data = { + .init = sata_init, + .exit = sata_exit, +}; + static void __init mx53_loco_board_init(void) { mxc_iomux_v3_setup_multiple_pads(mx53_loco_pads, @@ -215,6 +292,7 @@ static void __init mx53_loco_board_init(void) imx53_add_imx_i2c(1, &mx53_loco_i2c_data); imx53_add_sdhci_esdhc_imx(0, NULL); imx53_add_sdhci_esdhc_imx(2, NULL); + imx53_add_ahci_imx(0, &sata_data); } static void __init mx53_loco_timer_init(void) -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html