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ARM: OMAP: USB: EHCI and OHCI hwmod structures for OMAP4
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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>
[keshava_mgowda@ti.com: rebased to kernel version 3.0, added workarounds for
 hardware issues]
Signed-off-by: Keshava Munegowda <keshava_mgowda@ti.com>
Reviewed-by: Partha Basak <parthab@india.ti.com>
[paul@pwsan.com: fixed multi-line comments, fixed whitespace, fixed S-o-b
 notes, removed spurious TLL->L3 interface]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
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Benoit Cousson authored and Paul Walmsley committed Dec 16, 2011
1 parent de23138 commit af88fa9
Showing 1 changed file with 207 additions and 1 deletion.
208 changes: 207 additions & 1 deletion arch/arm/mach-omap2/omap_hwmod_44xx_data.c
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Original file line number Diff line number Diff line change
Expand Up @@ -70,6 +70,8 @@ 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
Expand Down Expand Up @@ -5276,6 +5278,207 @@ static struct omap_hwmod omap44xx_wd_timer3_hwmod = {
.slaves_cnt = ARRAY_SIZE(omap44xx_wd_timer3_slaves),
};

/*
* '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,
};

/*
* '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_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),
};

static __initdata struct omap_hwmod *omap44xx_hwmods[] = {

/* dmm class */
Expand Down Expand Up @@ -5415,13 +5618,16 @@ 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,
};

Expand Down

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