lkml.org 
[lkml]   [2011]   [Oct]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 1/5 v14] arm: omap: usb: ehci and ohci hwmod structures for omap4
    Date
    From: Benoit Cousson <b-cousson@ti.com>

    Following 2 hwmod structures are added
    1. usb_host_hs
    The hwmod of usbhs with uhh, ehci and ohci base addresses
    functional clock and ehci, ohci irqs

    2. usb_tll_hs
    hwmod of usbhs with the TLL base address and irq.

    Signed-off-by: Benoit Cousson <b-cousson@ti.com>

    - rebased to kernel version 3.0
    - Workarounds for hardware issues

    Signed-off-by: Keshava Munegowda <keshava_mgowda@ti.com>
    Reviewed-by: Partha Basak <parthab@india.ti.com>
    ---
    arch/arm/mach-omap2/omap_hwmod_44xx_data.c | 221 +++++++++++++++++++++++++++-
    1 files changed, 220 insertions(+), 1 deletions(-)

    diff --git a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
    index 6201422..f85de42 100644
    --- a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
    +++ b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
    @@ -68,6 +68,8 @@ static struct omap_hwmod omap44xx_mmc2_hwmod;
    static struct omap_hwmod omap44xx_mpu_hwmod;
    static struct omap_hwmod omap44xx_mpu_private_hwmod;
    static struct omap_hwmod omap44xx_usb_otg_hs_hwmod;
    +static struct omap_hwmod omap44xx_usb_host_hs_hwmod;
    +static struct omap_hwmod omap44xx_usb_tll_hs_hwmod;

    /*
    * Interconnects omap_hwmod structures
    @@ -5336,6 +5338,220 @@ static struct omap_hwmod omap44xx_wd_timer3_hwmod = {
    .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
    };

    +/*
    + * 'usb_host_hs' class
    + * high-speed multi-port usb host controller
    + */
    +static struct omap_hwmod_ocp_if omap44xx_usb_host_hs__l3_main_2 = {
    + .master = &omap44xx_usb_host_hs_hwmod,
    + .slave = &omap44xx_l3_main_2_hwmod,
    + .clk = "l3_div_ck",
    + .user = OCP_USER_MPU | OCP_USER_SDMA,
    +};
    +
    +static struct omap_hwmod_class_sysconfig omap44xx_usb_host_hs_sysc = {
    + .rev_offs = 0x0000,
    + .sysc_offs = 0x0010,
    + .syss_offs = 0x0014,
    + .sysc_flags = (SYSC_HAS_MIDLEMODE | SYSC_HAS_SIDLEMODE |
    + SYSC_HAS_SOFTRESET),
    + .idlemodes = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART |
    + SIDLE_SMART_WKUP | MSTANDBY_FORCE | MSTANDBY_NO |
    + MSTANDBY_SMART | MSTANDBY_SMART_WKUP),
    + .sysc_fields = &omap_hwmod_sysc_type2,
    +};
    +
    +static struct omap_hwmod_class omap44xx_usb_host_hs_hwmod_class = {
    + .name = "usb_host_hs",
    + .sysc = &omap44xx_usb_host_hs_sysc,
    +};
    +
    +static struct omap_hwmod_ocp_if *omap44xx_usb_host_hs_masters[] = {
    + &omap44xx_usb_host_hs__l3_main_2,
    +};
    +
    +static struct omap_hwmod_addr_space omap44xx_usb_host_hs_addrs[] = {
    + {
    + .name = "uhh",
    + .pa_start = 0x4a064000,
    + .pa_end = 0x4a0647ff,
    + .flags = ADDR_TYPE_RT
    + },
    + {
    + .name = "ohci",
    + .pa_start = 0x4a064800,
    + .pa_end = 0x4a064bff,
    + },
    + {
    + .name = "ehci",
    + .pa_start = 0x4a064c00,
    + .pa_end = 0x4a064fff,
    + },
    + {}
    +};
    +
    +static struct omap_hwmod_irq_info omap44xx_usb_host_hs_irqs[] = {
    + { .name = "ohci-irq", .irq = 76 + OMAP44XX_IRQ_GIC_START },
    + { .name = "ehci-irq", .irq = 77 + OMAP44XX_IRQ_GIC_START },
    + { .irq = -1 }
    +};
    +
    +static struct omap_hwmod_ocp_if omap44xx_l4_cfg__usb_host_hs = {
    + .master = &omap44xx_l4_cfg_hwmod,
    + .slave = &omap44xx_usb_host_hs_hwmod,
    + .clk = "l4_div_ck",
    + .addr = omap44xx_usb_host_hs_addrs,
    + .user = OCP_USER_MPU | OCP_USER_SDMA,
    +};
    +
    +static struct omap_hwmod_ocp_if *omap44xx_usb_host_hs_slaves[] = {
    + &omap44xx_l4_cfg__usb_host_hs,
    +};
    +
    +static struct omap_hwmod omap44xx_usb_host_hs_hwmod = {
    + .name = "usb_host_hs",
    + .class = &omap44xx_usb_host_hs_hwmod_class,
    + .clkdm_name = "l3_init_clkdm",
    + .main_clk = "usb_host_hs_fck",
    + .prcm = {
    + .omap4 = {
    + .clkctrl_offs = OMAP4_CM_L3INIT_USB_HOST_CLKCTRL_OFFSET,
    + .context_offs = OMAP4_RM_L3INIT_USB_HOST_CONTEXT_OFFSET,
    + .modulemode = MODULEMODE_SWCTRL,
    + },
    + },
    + .mpu_irqs = omap44xx_usb_host_hs_irqs,
    + .slaves = omap44xx_usb_host_hs_slaves,
    + .slaves_cnt = ARRAY_SIZE(omap44xx_usb_host_hs_slaves),
    + .masters = omap44xx_usb_host_hs_masters,
    + .masters_cnt = ARRAY_SIZE(omap44xx_usb_host_hs_masters),
    +
    + /*
    + * Errata: USBHOST Configured In Smart-Idle Can Lead To a Deadlock
    + * id: i660
    + *
    + * Description:
    + * In the following configuration :
    + * - USBHOST module is set to smart-idle mode
    + * - PRCM asserts idle_req to the USBHOST module ( This typically
    + * happens when the system is going to a low power mode : all ports
    + * have been suspended, the master part of the USBHOST module has
    + * entered the standby state, and SW has cut the functional clocks)
    + * - an USBHOST interrupt occurs before the module is able to answer
    + * idle_ack, typically a remote wakeup IRQ.
    + * Then the USB HOST module will enter a deadlock situation where it
    + * is no more accessible nor functional.
    + *
    + * Workaround:
    + * Don't use smart idle; use only force idle, hence HWMOD_SWSUP_SIDLE
    + */
    +
    + /* Errata: USB host EHCI may stall when entering smart-standby mode
    + * Id: i571
    + *
    + * Description:
    + * When the USBHOST module is set to smart-standby mode, and when it is
    + * ready to enter the standby state (i.e. all ports are suspended and
    + * all attached devices are in suspend mode), then it can wrongly assert
    + * the Mstandby signal too early while there are still some residual OCP
    + * transactions ongoing. If this condition occurs, the internal state
    + * machine may go to an undefined state and the USB link may be stuck
    + * upon the next resume.
    + *
    + * Workaround:
    + * Don't use smart standby; use only force standby,
    + * hence HWMOD_SWSUP_MSTANDBY
    + */
    +
    + /* During system boot; If the hwmod framework resets the module
    + * the module will have smart idle settings; which can lead to deadlock
    + * (above Errata Id:i660); so, dont reset the module during boot;
    + * Use HWMOD_INIT_NO_RESET.
    + */
    +
    + .flags = HWMOD_SWSUP_SIDLE | HWMOD_SWSUP_MSTANDBY |
    + HWMOD_INIT_NO_RESET,
    + .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
    +};
    +
    +/*
    + * 'usb_tll_hs' class
    + * usb_tll_hs module is the adapter on the usb_host_hs ports
    + */
    +static struct omap_hwmod_class_sysconfig omap44xx_usb_tll_hs_sysc = {
    + .rev_offs = 0x0000,
    + .sysc_offs = 0x0010,
    + .syss_offs = 0x0014,
    + .sysc_flags = (SYSC_HAS_CLOCKACTIVITY | SYSC_HAS_SIDLEMODE |
    + SYSC_HAS_ENAWAKEUP | SYSC_HAS_SOFTRESET |
    + SYSC_HAS_AUTOIDLE),
    + .idlemodes = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART),
    + .sysc_fields = &omap_hwmod_sysc_type1,
    +};
    +
    +static struct omap_hwmod_class omap44xx_usb_tll_hs_hwmod_class = {
    + .name = "usb_tll_hs",
    + .sysc = &omap44xx_usb_tll_hs_sysc,
    +};
    +
    +static struct omap_hwmod_irq_info omap44xx_usb_tll_hs_irqs[] = {
    + { .name = "tll-irq", .irq = 78 + OMAP44XX_IRQ_GIC_START },
    + { .irq = -1 }
    +};
    +
    +static struct omap_hwmod_addr_space omap44xx_usb_tll_hs_addrs[] = {
    + {
    + .name = "tll",
    + .pa_start = 0x4a062000,
    + .pa_end = 0x4a063fff,
    + .flags = ADDR_TYPE_RT
    + },
    + {}
    +};
    +
    +static struct omap_hwmod_ocp_if omap44xx_usb_tll_hs__l3_main_2 = {
    + .master = &omap44xx_usb_tll_hs_hwmod,
    + .slave = &omap44xx_l3_main_2_hwmod,
    + .clk = "l3_div_ck",
    + .user = OCP_USER_MPU | OCP_USER_SDMA,
    +};
    +
    +static struct omap_hwmod_ocp_if *omap44xx_usb_tll_hs_masters[] = {
    + &omap44xx_usb_tll_hs__l3_main_2,
    +};
    +
    +static struct omap_hwmod_ocp_if omap44xx_l4_cfg__usb_tll_hs = {
    + .master = &omap44xx_l4_cfg_hwmod,
    + .slave = &omap44xx_usb_tll_hs_hwmod,
    + .clk = "l4_div_ck",
    + .addr = omap44xx_usb_tll_hs_addrs,
    + .user = OCP_USER_MPU | OCP_USER_SDMA,
    +};
    +
    +static struct omap_hwmod_ocp_if *omap44xx_usb_tll_hs_slaves[] = {
    + &omap44xx_l4_cfg__usb_tll_hs,
    +};
    +
    +static struct omap_hwmod omap44xx_usb_tll_hs_hwmod = {
    + .name = "usb_tll_hs",
    + .class = &omap44xx_usb_tll_hs_hwmod_class,
    + .clkdm_name = "l3_init_clkdm",
    + .main_clk = "usb_tll_hs_ick",
    + .prcm = {
    + .omap4 = {
    + .clkctrl_offs = OMAP4_CM_L3INIT_USB_TLL_CLKCTRL_OFFSET,
    + .context_offs = OMAP4_RM_L3INIT_USB_TLL_CONTEXT_OFFSET,
    + .modulemode = MODULEMODE_HWCTRL,
    + },
    + },
    + .mpu_irqs = omap44xx_usb_tll_hs_irqs,
    + .slaves = omap44xx_usb_tll_hs_slaves,
    + .slaves_cnt = ARRAY_SIZE(omap44xx_usb_tll_hs_slaves),
    + .masters = omap44xx_usb_tll_hs_masters,
    + .masters_cnt = ARRAY_SIZE(omap44xx_usb_tll_hs_masters),
    + .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
    +};
    +
    static __initdata struct omap_hwmod *omap44xx_hwmods[] = {

    /* dmm class */
    @@ -5475,13 +5691,16 @@ static __initdata struct omap_hwmod *omap44xx_hwmods[] = {
    &omap44xx_uart3_hwmod,
    &omap44xx_uart4_hwmod,

    + /* usb host class */
    + &omap44xx_usb_host_hs_hwmod,
    + &omap44xx_usb_tll_hs_hwmod,
    +
    /* usb_otg_hs class */
    &omap44xx_usb_otg_hs_hwmod,

    /* wd_timer class */
    &omap44xx_wd_timer2_hwmod,
    &omap44xx_wd_timer3_hwmod,
    -
    NULL,
    };

    --
    1.6.0.4


    \
     
     \ /
      Last update: 2011-10-11 09:51    [W:0.036 / U:30.476 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site