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Diffstat (limited to 'arch/arm/mach-omap1/usb.c')
-rw-r--r--arch/arm/mach-omap1/usb.c138
1 files changed, 94 insertions, 44 deletions
diff --git a/arch/arm/mach-omap1/usb.c b/arch/arm/mach-omap1/usb.c
index d8e9bbda8f7b..08d42abc4a0f 100644
--- a/arch/arm/mach-omap1/usb.c
+++ b/arch/arm/mach-omap1/usb.c
@@ -9,14 +9,16 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
+#include <linux/dma-map-ops.h>
#include <linux/io.h>
+#include <linux/delay.h>
+#include <linux/soc/ti/omap1-io.h>
#include <asm/irq.h>
-#include <mach/mux.h>
-
-#include <mach/usb.h>
-
+#include "hardware.h"
+#include "mux.h"
+#include "usb.h"
#include "common.h"
/* These routines should handle the standard chip-specific modes
@@ -188,12 +190,6 @@ static struct platform_device udc_device = {
static inline void udc_device_init(struct omap_usb_config *pdata)
{
- /* IRQ numbers for omap7xx */
- if(cpu_is_omap7xx()) {
- udc_resources[1].start = INT_7XX_USB_GENI;
- udc_resources[2].start = INT_7XX_USB_NON_ISO;
- udc_resources[3].start = INT_7XX_USB_ISO;
- }
pdata->udc_device = &udc_device;
}
@@ -205,8 +201,6 @@ static inline void udc_device_init(struct omap_usb_config *pdata)
#endif
-#if IS_ENABLED(CONFIG_USB_OHCI_HCD)
-
/* The dmamask must be set for OHCI to work */
static u64 ohci_dmamask = ~(u32)0;
@@ -235,20 +229,13 @@ static struct platform_device ohci_device = {
static inline void ohci_device_init(struct omap_usb_config *pdata)
{
- if (cpu_is_omap7xx())
- ohci_resources[1].start = INT_7XX_USB_HHC_1;
+ if (!IS_ENABLED(CONFIG_USB_OHCI_HCD))
+ return;
+
pdata->ohci_device = &ohci_device;
pdata->ocpi_enable = &ocpi_enable;
}
-#else
-
-static inline void ohci_device_init(struct omap_usb_config *pdata)
-{
-}
-
-#endif
-
#if defined(CONFIG_USB_OTG) && defined(CONFIG_ARCH_OMAP_OTG)
static struct resource otg_resources[] = {
@@ -272,8 +259,6 @@ static struct platform_device otg_device = {
static inline void otg_device_init(struct omap_usb_config *pdata)
{
- if (cpu_is_omap7xx())
- otg_resources[1].start = INT_7XX_USB_OTG;
pdata->otg_device = &otg_device;
}
@@ -302,14 +287,7 @@ static u32 __init omap1_usb0_init(unsigned nwires, unsigned is_device)
}
if (is_device) {
- if (cpu_is_omap7xx()) {
- omap_cfg_reg(AA17_7XX_USB_DM);
- omap_cfg_reg(W16_7XX_USB_PU_EN);
- omap_cfg_reg(W17_7XX_USB_VBUSI);
- omap_cfg_reg(W18_7XX_USB_DMCK_OUT);
- omap_cfg_reg(W19_7XX_USB_DCRST);
- } else
- omap_cfg_reg(W4_USB_PUEN);
+ omap_cfg_reg(W4_USB_PUEN);
}
if (nwires == 2) {
@@ -329,14 +307,11 @@ static u32 __init omap1_usb0_init(unsigned nwires, unsigned is_device)
* - OTG support on this port not yet written
*/
- /* Don't do this for omap7xx -- it causes USB to not work correctly */
- if (!cpu_is_omap7xx()) {
- l = omap_readl(USB_TRANSCEIVER_CTRL);
- l &= ~(7 << 4);
- if (!is_device)
- l |= (3 << 1);
- omap_writel(l, USB_TRANSCEIVER_CTRL);
- }
+ l = omap_readl(USB_TRANSCEIVER_CTRL);
+ l &= ~(7 << 4);
+ if (!is_device)
+ l |= (3 << 1);
+ omap_writel(l, USB_TRANSCEIVER_CTRL);
return 3 << 16;
}
@@ -533,6 +508,79 @@ bad:
}
#ifdef CONFIG_ARCH_OMAP15XX
+/* OMAP-1510 OHCI has its own MMU for DMA */
+#define OMAP1510_LB_MEMSIZE 32 /* Should be same as SDRAM size */
+#define OMAP1510_LB_CLOCK_DIV 0xfffec10c
+#define OMAP1510_LB_MMU_CTL 0xfffec208
+#define OMAP1510_LB_MMU_LCK 0xfffec224
+#define OMAP1510_LB_MMU_LD_TLB 0xfffec228
+#define OMAP1510_LB_MMU_CAM_H 0xfffec22c
+#define OMAP1510_LB_MMU_CAM_L 0xfffec230
+#define OMAP1510_LB_MMU_RAM_H 0xfffec234
+#define OMAP1510_LB_MMU_RAM_L 0xfffec238
+
+/*
+ * Bus address is physical address, except for OMAP-1510 Local Bus.
+ * OMAP-1510 bus address is translated into a Local Bus address if the
+ * OMAP bus type is lbus.
+ */
+#define OMAP1510_LB_OFFSET UL(0x30000000)
+
+/*
+ * OMAP-1510 specific Local Bus clock on/off
+ */
+static int omap_1510_local_bus_power(int on)
+{
+ if (on) {
+ omap_writel((1 << 1) | (1 << 0), OMAP1510_LB_MMU_CTL);
+ udelay(200);
+ } else {
+ omap_writel(0, OMAP1510_LB_MMU_CTL);
+ }
+
+ return 0;
+}
+
+/*
+ * OMAP-1510 specific Local Bus initialization
+ * NOTE: This assumes 32MB memory size in OMAP1510LB_MEMSIZE.
+ * See also arch/mach-omap/memory.h for __virt_to_dma() and
+ * __dma_to_virt() which need to match with the physical
+ * Local Bus address below.
+ */
+static int omap_1510_local_bus_init(void)
+{
+ unsigned int tlb;
+ unsigned long lbaddr, physaddr;
+
+ omap_writel((omap_readl(OMAP1510_LB_CLOCK_DIV) & 0xfffffff8) | 0x4,
+ OMAP1510_LB_CLOCK_DIV);
+
+ /* Configure the Local Bus MMU table */
+ for (tlb = 0; tlb < OMAP1510_LB_MEMSIZE; tlb++) {
+ lbaddr = tlb * 0x00100000 + OMAP1510_LB_OFFSET;
+ physaddr = tlb * 0x00100000 + PHYS_OFFSET;
+ omap_writel((lbaddr & 0x0fffffff) >> 22, OMAP1510_LB_MMU_CAM_H);
+ omap_writel(((lbaddr & 0x003ffc00) >> 6) | 0xc,
+ OMAP1510_LB_MMU_CAM_L);
+ omap_writel(physaddr >> 16, OMAP1510_LB_MMU_RAM_H);
+ omap_writel((physaddr & 0x0000fc00) | 0x300, OMAP1510_LB_MMU_RAM_L);
+ omap_writel(tlb << 4, OMAP1510_LB_MMU_LCK);
+ omap_writel(0x1, OMAP1510_LB_MMU_LD_TLB);
+ }
+
+ /* Enable the walking table */
+ omap_writel(omap_readl(OMAP1510_LB_MMU_CTL) | (1 << 3), OMAP1510_LB_MMU_CTL);
+ udelay(200);
+
+ return 0;
+}
+
+static void omap_1510_local_bus_reset(void)
+{
+ omap_1510_local_bus_power(1);
+ omap_1510_local_bus_init();
+}
/* ULPD_DPLL_CTRL */
#define DPLL_IOB (1 << 13)
@@ -596,17 +644,19 @@ static void __init omap_1510_usb_init(struct omap_usb_config *config)
}
#endif
-#if IS_ENABLED(CONFIG_USB_OHCI_HCD)
- if (config->register_host) {
+ if (IS_ENABLED(CONFIG_USB_OHCI_HCD) && config->register_host) {
int status;
ohci_device.dev.platform_data = config;
+ dma_direct_set_offset(&ohci_device.dev, PHYS_OFFSET,
+ OMAP1510_LB_OFFSET, (u64)-1);
status = platform_device_register(&ohci_device);
if (status)
pr_debug("can't register OHCI device, %d\n", status);
/* hcd explicitly gates 48MHz */
+
+ config->lb_reset = omap_1510_local_bus_reset;
}
-#endif
}
#else
@@ -628,7 +678,7 @@ void __init omap1_usb_init(struct omap_usb_config *_pdata)
ohci_device_init(pdata);
otg_device_init(pdata);
- if (cpu_is_omap7xx() || cpu_is_omap16xx())
+ if (cpu_is_omap16xx())
omap_otg_init(pdata);
else if (cpu_is_omap15xx())
omap_1510_usb_init(pdata);
generated by cgit (git 2.34.1) at 2025-07-25 18:54:39 +0000