diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/arm/mach-omap2/usb-tusb6010.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/arm/mach-omap2/usb-tusb6010.c | 350 |
1 files changed, 0 insertions, 350 deletions
diff --git a/ANDROID_3.4.5/arch/arm/mach-omap2/usb-tusb6010.c b/ANDROID_3.4.5/arch/arm/mach-omap2/usb-tusb6010.c deleted file mode 100644 index 994d8f59..00000000 --- a/ANDROID_3.4.5/arch/arm/mach-omap2/usb-tusb6010.c +++ /dev/null @@ -1,350 +0,0 @@ -/* - * linux/arch/arm/mach-omap2/usb-tusb6010.c - * - * Copyright (C) 2006 Nokia Corporation - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/string.h> -#include <linux/types.h> -#include <linux/errno.h> -#include <linux/delay.h> -#include <linux/platform_device.h> -#include <linux/gpio.h> -#include <linux/export.h> - -#include <linux/usb/musb.h> - -#include <plat/gpmc.h> - -#include "mux.h" - -static u8 async_cs, sync_cs; -static unsigned refclk_psec; - - -/* t2_ps, when quantized to fclk units, must happen no earlier than - * the clock after after t1_NS. - * - * Return a possibly updated value of t2_ps, converted to nsec. - */ -static unsigned -next_clk(unsigned t1_NS, unsigned t2_ps, unsigned fclk_ps) -{ - unsigned t1_ps = t1_NS * 1000; - unsigned t1_f, t2_f; - - if ((t1_ps + fclk_ps) < t2_ps) - return t2_ps / 1000; - - t1_f = (t1_ps + fclk_ps - 1) / fclk_ps; - t2_f = (t2_ps + fclk_ps - 1) / fclk_ps; - - if (t1_f >= t2_f) - t2_f = t1_f + 1; - - return (t2_f * fclk_ps) / 1000; -} - -/* NOTE: timings are from tusb 6010 datasheet Rev 1.8, 12-Sept 2006 */ - -static int tusb_set_async_mode(unsigned sysclk_ps, unsigned fclk_ps) -{ - struct gpmc_timings t; - unsigned t_acsnh_advnh = sysclk_ps + 3000; - unsigned tmp; - - memset(&t, 0, sizeof(t)); - - /* CS_ON = t_acsnh_acsnl */ - t.cs_on = 8; - /* ADV_ON = t_acsnh_advnh - t_advn */ - t.adv_on = next_clk(t.cs_on, t_acsnh_advnh - 7000, fclk_ps); - - /* - * READ ... from omap2420 TRM fig 12-13 - */ - - /* ADV_RD_OFF = t_acsnh_advnh */ - t.adv_rd_off = next_clk(t.adv_on, t_acsnh_advnh, fclk_ps); - - /* OE_ON = t_acsnh_advnh + t_advn_oen (then wait for nRDY) */ - t.oe_on = next_clk(t.adv_on, t_acsnh_advnh + 1000, fclk_ps); - - /* ACCESS = counters continue only after nRDY */ - tmp = t.oe_on * 1000 + 300; - t.access = next_clk(t.oe_on, tmp, fclk_ps); - - /* OE_OFF = after data gets sampled */ - tmp = t.access * 1000; - t.oe_off = next_clk(t.access, tmp, fclk_ps); - - t.cs_rd_off = t.oe_off; - - tmp = t.cs_rd_off * 1000 + 7000 /* t_acsn_rdy_z */; - t.rd_cycle = next_clk(t.cs_rd_off, tmp, fclk_ps); - - /* - * WRITE ... from omap2420 TRM fig 12-15 - */ - - /* ADV_WR_OFF = t_acsnh_advnh */ - t.adv_wr_off = t.adv_rd_off; - - /* WE_ON = t_acsnh_advnh + t_advn_wen (then wait for nRDY) */ - t.we_on = next_clk(t.adv_wr_off, t_acsnh_advnh + 1000, fclk_ps); - - /* WE_OFF = after data gets sampled */ - tmp = t.we_on * 1000 + 300; - t.we_off = next_clk(t.we_on, tmp, fclk_ps); - - t.cs_wr_off = t.we_off; - - tmp = t.cs_wr_off * 1000 + 7000 /* t_acsn_rdy_z */; - t.wr_cycle = next_clk(t.cs_wr_off, tmp, fclk_ps); - - return gpmc_cs_set_timings(async_cs, &t); -} - -static int tusb_set_sync_mode(unsigned sysclk_ps, unsigned fclk_ps) -{ - struct gpmc_timings t; - unsigned t_scsnh_advnh = sysclk_ps + 3000; - unsigned tmp; - - memset(&t, 0, sizeof(t)); - t.cs_on = 8; - - /* ADV_ON = t_acsnh_advnh - t_advn */ - t.adv_on = next_clk(t.cs_on, t_scsnh_advnh - 7000, fclk_ps); - - /* GPMC_CLK rate = fclk rate / div */ - t.sync_clk = 11100 /* 11.1 nsec */; - tmp = (t.sync_clk + fclk_ps - 1) / fclk_ps; - if (tmp > 4) - return -ERANGE; - if (tmp <= 0) - tmp = 1; - t.page_burst_access = (fclk_ps * tmp) / 1000; - - /* - * READ ... based on omap2420 TRM fig 12-19, 12-20 - */ - - /* ADV_RD_OFF = t_scsnh_advnh */ - t.adv_rd_off = next_clk(t.adv_on, t_scsnh_advnh, fclk_ps); - - /* OE_ON = t_scsnh_advnh + t_advn_oen * fclk_ps (then wait for nRDY) */ - tmp = (t.adv_rd_off * 1000) + (3 * fclk_ps); - t.oe_on = next_clk(t.adv_on, tmp, fclk_ps); - - /* ACCESS = number of clock cycles after t_adv_eon */ - tmp = (t.oe_on * 1000) + (5 * fclk_ps); - t.access = next_clk(t.oe_on, tmp, fclk_ps); - - /* OE_OFF = after data gets sampled */ - tmp = (t.access * 1000) + (1 * fclk_ps); - t.oe_off = next_clk(t.access, tmp, fclk_ps); - - t.cs_rd_off = t.oe_off; - - tmp = t.cs_rd_off * 1000 + 7000 /* t_scsn_rdy_z */; - t.rd_cycle = next_clk(t.cs_rd_off, tmp, fclk_ps); - - /* - * WRITE ... based on omap2420 TRM fig 12-21 - */ - - /* ADV_WR_OFF = t_scsnh_advnh */ - t.adv_wr_off = t.adv_rd_off; - - /* WE_ON = t_scsnh_advnh + t_advn_wen * fclk_ps (then wait for nRDY) */ - tmp = (t.adv_wr_off * 1000) + (3 * fclk_ps); - t.we_on = next_clk(t.adv_wr_off, tmp, fclk_ps); - - /* WE_OFF = number of clock cycles after t_adv_wen */ - tmp = (t.we_on * 1000) + (6 * fclk_ps); - t.we_off = next_clk(t.we_on, tmp, fclk_ps); - - t.cs_wr_off = t.we_off; - - tmp = t.cs_wr_off * 1000 + 7000 /* t_scsn_rdy_z */; - t.wr_cycle = next_clk(t.cs_wr_off, tmp, fclk_ps); - - return gpmc_cs_set_timings(sync_cs, &t); -} - -extern unsigned long gpmc_get_fclk_period(void); - -/* tusb driver calls this when it changes the chip's clocking */ -int tusb6010_platform_retime(unsigned is_refclk) -{ - static const char error[] = - KERN_ERR "tusb6010 %s retime error %d\n"; - - unsigned fclk_ps = gpmc_get_fclk_period(); - unsigned sysclk_ps; - int status; - - if (!refclk_psec || fclk_ps == 0) - return -ENODEV; - - sysclk_ps = is_refclk ? refclk_psec : TUSB6010_OSCCLK_60; - - status = tusb_set_async_mode(sysclk_ps, fclk_ps); - if (status < 0) { - printk(error, "async", status); - goto done; - } - status = tusb_set_sync_mode(sysclk_ps, fclk_ps); - if (status < 0) - printk(error, "sync", status); -done: - return status; -} -EXPORT_SYMBOL_GPL(tusb6010_platform_retime); - -static struct resource tusb_resources[] = { - /* Order is significant! The start/end fields - * are updated during setup.. - */ - { /* Asynchronous access */ - .flags = IORESOURCE_MEM, - }, - { /* Synchronous access */ - .flags = IORESOURCE_MEM, - }, - { /* IRQ */ - .name = "mc", - .flags = IORESOURCE_IRQ, - }, -}; - -static u64 tusb_dmamask = ~(u32)0; - -static struct platform_device tusb_device = { - .name = "musb-tusb", - .id = -1, - .dev = { - .dma_mask = &tusb_dmamask, - .coherent_dma_mask = 0xffffffff, - }, - .num_resources = ARRAY_SIZE(tusb_resources), - .resource = tusb_resources, -}; - - -/* this may be called only from board-*.c setup code */ -int __init -tusb6010_setup_interface(struct musb_hdrc_platform_data *data, - unsigned ps_refclk, unsigned waitpin, - unsigned async, unsigned sync, - unsigned irq, unsigned dmachan) -{ - int status; - static char error[] __initdata = - KERN_ERR "tusb6010 init error %d, %d\n"; - - /* ASYNC region, primarily for PIO */ - status = gpmc_cs_request(async, SZ_16M, (unsigned long *) - &tusb_resources[0].start); - if (status < 0) { - printk(error, 1, status); - return status; - } - tusb_resources[0].end = tusb_resources[0].start + 0x9ff; - async_cs = async; - gpmc_cs_write_reg(async, GPMC_CS_CONFIG1, - GPMC_CONFIG1_PAGE_LEN(2) - | GPMC_CONFIG1_WAIT_READ_MON - | GPMC_CONFIG1_WAIT_WRITE_MON - | GPMC_CONFIG1_WAIT_PIN_SEL(waitpin) - | GPMC_CONFIG1_READTYPE_ASYNC - | GPMC_CONFIG1_WRITETYPE_ASYNC - | GPMC_CONFIG1_DEVICESIZE_16 - | GPMC_CONFIG1_DEVICETYPE_NOR - | GPMC_CONFIG1_MUXADDDATA); - - - /* SYNC region, primarily for DMA */ - status = gpmc_cs_request(sync, SZ_16M, (unsigned long *) - &tusb_resources[1].start); - if (status < 0) { - printk(error, 2, status); - return status; - } - tusb_resources[1].end = tusb_resources[1].start + 0x9ff; - sync_cs = sync; - gpmc_cs_write_reg(sync, GPMC_CS_CONFIG1, - GPMC_CONFIG1_READMULTIPLE_SUPP - | GPMC_CONFIG1_READTYPE_SYNC - | GPMC_CONFIG1_WRITEMULTIPLE_SUPP - | GPMC_CONFIG1_WRITETYPE_SYNC - | GPMC_CONFIG1_CLKACTIVATIONTIME(1) - | GPMC_CONFIG1_PAGE_LEN(2) - | GPMC_CONFIG1_WAIT_READ_MON - | GPMC_CONFIG1_WAIT_WRITE_MON - | GPMC_CONFIG1_WAIT_PIN_SEL(waitpin) - | GPMC_CONFIG1_DEVICESIZE_16 - | GPMC_CONFIG1_DEVICETYPE_NOR - | GPMC_CONFIG1_MUXADDDATA - /* fclk divider gets set later */ - ); - - /* IRQ */ - status = gpio_request_one(irq, GPIOF_IN, "TUSB6010 irq"); - if (status < 0) { - printk(error, 3, status); - return status; - } - tusb_resources[2].start = irq + IH_GPIO_BASE; - - /* set up memory timings ... can speed them up later */ - if (!ps_refclk) { - printk(error, 4, status); - return -ENODEV; - } - refclk_psec = ps_refclk; - status = tusb6010_platform_retime(1); - if (status < 0) { - printk(error, 5, status); - return status; - } - - /* finish device setup ... */ - if (!data) { - printk(error, 6, status); - return -ENODEV; - } - tusb_device.dev.platform_data = data; - - /* REVISIT let the driver know what DMA channels work */ - if (!dmachan) - tusb_device.dev.dma_mask = NULL; - else { - /* assume OMAP 2420 ES2.0 and later */ - if (dmachan & (1 << 0)) - omap_mux_init_signal("sys_ndmareq0", 0); - if (dmachan & (1 << 1)) - omap_mux_init_signal("sys_ndmareq1", 0); - if (dmachan & (1 << 2)) - omap_mux_init_signal("sys_ndmareq2", 0); - if (dmachan & (1 << 3)) - omap_mux_init_signal("sys_ndmareq3", 0); - if (dmachan & (1 << 4)) - omap_mux_init_signal("sys_ndmareq4", 0); - if (dmachan & (1 << 5)) - omap_mux_init_signal("sys_ndmareq5", 0); - } - - /* so far so good ... register the device */ - status = platform_device_register(&tusb_device); - if (status < 0) { - printk(error, 7, status); - return status; - } - return 0; -} |