ARM: OMAP: USB: EHCI and OHCI hwmod structures for OMAP4

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>

diff --git a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
index daaf165..dcbf973 100644 (file)
--- a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
@@ -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
@@ -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 */
@@ -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,
 };