satip-axe/kernel/drivers/stm/stx7100.c

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/*
* (c) 2010 STMicroelectronics Limited
*
* Author: Pawel Moll <pawel.moll@st.com>
*
* 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/init.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/delay.h>
#include <linux/ethtool.h>
#include <linux/dma-mapping.h>
#include <linux/ata_platform.h>
#include <linux/mtd/partitions.h>
#include <linux/stm/pad.h>
#include <linux/stm/sysconf.h>
#include <linux/stm/emi.h>
#include <linux/stm/device.h>
#include <linux/stm/platform.h>
#include <linux/stm/stx7100.h>
#include <asm/irq-ilc.h>
/* EMI resources ---------------------------------------------------------- */
static int __initdata stx7100_emi_bank_configured[EMI_BANKS];
static void stx7100_emi_power(struct stm_device_state *device_state,
enum stm_device_power_state power)
{
int i;
int value = (power == stm_device_power_on) ? 0 : 1;
stm_device_sysconf_write(device_state, "EMI_PWR", value);
for (i = 5; i; --i) {
if (stm_device_sysconf_read(device_state, "EMI_ACK")
== value)
break;
mdelay(10);
}
return;
}
static struct platform_device stx7100_emi = {
.name = "emi",
.id = -1,
.num_resources = 2,
.resource = (struct resource[]) {
STM_PLAT_RESOURCE_MEM(0, 64 * 1024 * 1024),
STM_PLAT_RESOURCE_MEM(0x1a100000, 0x874),
},
.dev.platform_data = &(struct stm_device_config){
.sysconfs_num = 2,
.sysconfs = (struct stm_device_sysconf []){
STM_DEVICE_SYS_CFG(32, 1, 1, "EMI_PWR"),
STM_DEVICE_SYS_STA(15, 0, 0, "EMI_ACK"),
},
.power = stx7100_emi_power,
}
};
/* PATA resources --------------------------------------------------------- */
/* EMI A21 = CS1 (active low)
* EMI A20 = CS0 (active low)
* EMI A19 = DA2
* EMI A18 = DA1
* EMI A17 = DA0 */
static struct resource stx7100_pata_resources[] = {
/* I/O base: CS1=N, CS0=A */
[0] = STM_PLAT_RESOURCE_MEM(1 << 21, 8 << 17),
/* CTL base: CS1=A, CS0=N, DA2=A, DA1=A, DA0=N */
[1] = STM_PLAT_RESOURCE_MEM((1 << 20) + (6 << 17), 4),
/* IRQ */
[2] = STM_PLAT_RESOURCE_IRQ(-1, -1),
};
static struct platform_device stx7100_pata_device = {
.name = "pata_platform",
.id = -1,
.num_resources = ARRAY_SIZE(stx7100_pata_resources),
.resource = stx7100_pata_resources,
.dev.platform_data = &(struct pata_platform_info) {
.ioport_shift = 17,
},
};
void __init stx7100_configure_pata(struct stx7100_pata_config *config)
{
unsigned long bank_base;
if (!config) {
BUG();
return;
}
BUG_ON(config->emi_bank < 0 || config->emi_bank >= EMI_BANKS);
BUG_ON(stx7100_emi_bank_configured[config->emi_bank]);
stx7100_emi_bank_configured[config->emi_bank] = 1;
bank_base = emi_bank_base(config->emi_bank);
stx7100_pata_resources[0].start += bank_base;
stx7100_pata_resources[0].end += bank_base;
stx7100_pata_resources[1].start += bank_base;
stx7100_pata_resources[1].end += bank_base;
stx7100_pata_resources[2].start = config->irq;
stx7100_pata_resources[2].end = config->irq;
emi_config_pata(config->emi_bank, config->pc_mode);
platform_device_register(&stx7100_pata_device);
}
/* FDMA resources --------------------------------------------------------- */
static struct stm_plat_fdma_fw_regs stm_fdma_firmware_7100 = {
.rev_id = 0x8000 + (0x000 << 2), /* 0x8000 */
.cmd_statn = 0x8000 + (0x010 << 2), /* 0x8040 */
.ptrn = 0x8000 + (0x460 << 2), /* 0x9180 */
.cntn = 0x8000 + (0x462 << 2), /* 0x9188 */
.saddrn = 0x8000 + (0x463 << 2), /* 0x918c */
.daddrn = 0x8000 + (0x464 << 2), /* 0x9190 */
};
static struct stm_plat_fdma_hw stx7100_fdma_hw = {
.slim_regs = {
.id = 0x0000 + (0x000 << 2), /* 0x0000 */
.ver = 0x0000 + (0x001 << 2), /* 0x0004 */
.en = 0x0000 + (0x002 << 2), /* 0x0008 */
.clk_gate = 0x0000 + (0x003 << 2), /* 0x000c */
},
.dmem = {
.offset = 0x8000,
.size = 0x600 << 2, /* 1536 * 4 = 6144 */
},
.periph_regs = {
.sync_reg = 0x8000 + (0xfe2 << 2), /* 0xbf88 */
.cmd_sta = 0x8000 + (0xff0 << 2), /* 0xbfc0 */
.cmd_set = 0x8000 + (0xff1 << 2), /* 0xbfc4 */
.cmd_clr = 0x8000 + (0xff2 << 2), /* 0xbfc8 */
.cmd_mask = 0x8000 + (0xff3 << 2), /* 0xbfcc */
.int_sta = 0x8000 + (0xff4 << 2), /* 0xbfd0 */
.int_set = 0x8000 + (0xff5 << 2), /* 0xbfd4 */
.int_clr = 0x8000 + (0xff6 << 2), /* 0xbfd8 */
.int_mask = 0x8000 + (0xff7 << 2), /* 0xbfdc */
},
.imem = {
.offset = 0xc000,
.size = 0xa00 << 2, /* 2560 * 4 = 10240 */
},
};
static struct stm_plat_fdma_data stx7100_fdma_platform_data = {
.hw = &stx7100_fdma_hw,
.fw = &stm_fdma_firmware_7100,
};
static struct stm_plat_fdma_fw_regs stm_fdma_firmware_7109c2 = {
.rev_id = 0x8000 + (0x000 << 2), /* 0x8000 */
.cmd_statn = 0x8000 + (0x450 << 2), /* 0x9140 */
.req_ctln = 0x8000 + (0x460 << 2), /* 0x9180 */
.ptrn = 0x8000 + (0x500 << 2), /* 0x9400 */
.cntn = 0x8000 + (0x502 << 2), /* 0x9408 */
.saddrn = 0x8000 + (0x503 << 2), /* 0x940c */
.daddrn = 0x8000 + (0x504 << 2), /* 0x9410 */
};
static struct stm_plat_fdma_hw stx7109c2_fdma_hw = {
.slim_regs = {
.id = 0x0000 + (0x000 << 2), /* 0x0000 */
.ver = 0x0000 + (0x001 << 2), /* 0x0004 */
.en = 0x0000 + (0x002 << 2), /* 0x0008 */
.clk_gate = 0x0000 + (0x003 << 2), /* 0x000c */
},
.dmem = {
.offset = 0x8000,
.size = 0x600 << 2, /* 1536 * 4 = 6144 */
},
.periph_regs = {
.sync_reg = 0x8000 + (0xfe2 << 2), /* 0xbf88 */
.cmd_sta = 0x8000 + (0xff0 << 2), /* 0xbfc0 */
.cmd_set = 0x8000 + (0xff1 << 2), /* 0xbfc4 */
.cmd_clr = 0x8000 + (0xff2 << 2), /* 0xbfc8 */
.cmd_mask = 0x8000 + (0xff3 << 2), /* 0xbfcc */
.int_sta = 0x8000 + (0xff4 << 2), /* 0xbfd0 */
.int_set = 0x8000 + (0xff5 << 2), /* 0xbfd4 */
.int_clr = 0x8000 + (0xff6 << 2), /* 0xbfd8 */
.int_mask = 0x8000 + (0xff7 << 2), /* 0xbfdc */
},
.imem = {
.offset = 0xc000,
.size = 0xa00 << 2, /* 2560 * 4 = 10240 */
},
};
static struct stm_plat_fdma_data stx7109c2_fdma_platform_data = {
.hw = &stx7109c2_fdma_hw,
.fw = &stm_fdma_firmware_7109c2,
};
static struct stm_plat_fdma_fw_regs stm_fdma_firmware_7109c3 = {
.rev_id = 0x8000 + (0x000 << 2), /* 0x8000 */
.cmd_statn = 0x8000 + (0x450 << 2), /* 0x9140 */
.req_ctln = 0x8000 + (0x460 << 2), /* 0x9180 */
.ptrn = 0x8000 + (0x500 << 2), /* 0x9400 */
.cntn = 0x8000 + (0x502 << 2), /* 0x9408 */
.saddrn = 0x8000 + (0x503 << 2), /* 0x940c */
.daddrn = 0x8000 + (0x504 << 2), /* 0x9410 */
};
static struct stm_plat_fdma_hw stx7109c3_fdma_hw = {
.slim_regs = {
.id = 0x0000 + (0x000 << 2), /* 0x0000 */
.ver = 0x0000 + (0x001 << 2), /* 0x0004 */
.en = 0x0000 + (0x002 << 2), /* 0x0008 */
.clk_gate = 0x0000 + (0x003 << 2), /* 0x000c */
},
.dmem = {
.offset = 0x8000,
.size = 0x800 << 2, /* 2048 * 4 = 8192 */
},
.periph_regs = {
.sync_reg = 0x8000 + (0xfe2 << 2), /* 0xbf88 */
.cmd_sta = 0x8000 + (0xff0 << 2), /* 0xbfc0 */
.cmd_set = 0x8000 + (0xff1 << 2), /* 0xbfc4 */
.cmd_clr = 0x8000 + (0xff2 << 2), /* 0xbfc8 */
.cmd_mask = 0x8000 + (0xff3 << 2), /* 0xbfcc */
.int_sta = 0x8000 + (0xff4 << 2), /* 0xbfd0 */
.int_set = 0x8000 + (0xff5 << 2), /* 0xbfd4 */
.int_clr = 0x8000 + (0xff6 << 2), /* 0xbfd8 */
.int_mask = 0x8000 + (0xff7 << 2), /* 0xbfdc */
},
.imem = {
.offset = 0xc000,
.size = 0x1000 << 2, /* 4096 * 4 = 16384 */
},
};
static struct stm_plat_fdma_data stx7109c3_fdma_platform_data = {
.hw = &stx7109c3_fdma_hw,
.fw = &stm_fdma_firmware_7109c3,
};
static struct platform_device stx7100_fdma_device = {
.name = "stm-fdma",
.id = -1,
.num_resources = 2,
.resource = (struct resource[2]) {
STM_PLAT_RESOURCE_MEM(0x19220000, 0x10000),
STM_PLAT_RESOURCE_IRQ(140, -1),
},
};
static void stx7100_fdma_setup(void)
{
switch (cpu_data->type) {
case CPU_STX7100:
stx7100_fdma_device.dev.platform_data =
&stx7100_fdma_platform_data;
break;
case CPU_STX7109:
switch (cpu_data->cut_major) {
case 1:
BUG();
break;
case 2:
stx7100_fdma_device.dev.platform_data =
&stx7109c2_fdma_platform_data;
break;
default:
stx7100_fdma_device.dev.platform_data =
&stx7109c3_fdma_platform_data;
break;
}
break;
default:
BUG();
break;
}
}
/* Hardware RNG resources ------------------------------------------------- */
static struct platform_device stx7100_rng_hwrandom_device = {
.name = "stm-hwrandom",
.id = -1,
.num_resources = 1,
.resource = (struct resource[]) {
STM_PLAT_RESOURCE_MEM(0x19250000, 0x1000),
}
};
static struct platform_device stx7100_rng_devrandom_device = {
.name = "stm-rng",
.id = -1,
.num_resources = 1,
.resource = (struct resource[]) {
STM_PLAT_RESOURCE_MEM(0x19250000, 0x1000),
}
};
/* PIO ports resources ---------------------------------------------------- */
static struct platform_device stx7100_pio_devices[] = {
[0] = {
.name = "stm-gpio",
.id = 0,
.num_resources = 2,
.resource = (struct resource[]) {
STM_PLAT_RESOURCE_MEM(0x18020000, 0x100),
STM_PLAT_RESOURCE_IRQ(80, -1),
},
},
[1] = {
.name = "stm-gpio",
.id = 1,
.num_resources = 2,
.resource = (struct resource[]) {
STM_PLAT_RESOURCE_MEM(0x18021000, 0x100),
STM_PLAT_RESOURCE_IRQ(84, -1),
},
},
[2] = {
.name = "stm-gpio",
.id = 2,
.num_resources = 2,
.resource = (struct resource[]) {
STM_PLAT_RESOURCE_MEM(0x18022000, 0x100),
STM_PLAT_RESOURCE_IRQ(88, -1),
},
},
[3] = {
.name = "stm-gpio",
.id = 3,
.num_resources = 2,
.resource = (struct resource[]) {
STM_PLAT_RESOURCE_MEM(0x18023000, 0x100),
STM_PLAT_RESOURCE_IRQ(115, -1),
},
},
[4] = {
.name = "stm-gpio",
.id = 4,
.num_resources = 2,
.resource = (struct resource[]) {
STM_PLAT_RESOURCE_MEM(0x18024000, 0x100),
STM_PLAT_RESOURCE_IRQ(114, -1),
},
},
[5] = {
.name = "stm-gpio",
.id = 5,
.num_resources = 2,
.resource = (struct resource[]) {
STM_PLAT_RESOURCE_MEM(0x18025000, 0x100),
STM_PLAT_RESOURCE_IRQ(113, -1),
},
},
};
static int stx7100_pio_config(unsigned gpio,
enum stm_pad_gpio_direction direction, int function, void *priv)
{
switch (direction) {
case stm_pad_gpio_direction_in:
BUG_ON(function != -1);
stm_gpio_direction(gpio, STM_GPIO_DIRECTION_IN);
break;
case stm_pad_gpio_direction_out:
BUG_ON(function < 0);
BUG_ON(function > 1);
stm_gpio_direction(gpio, function ?
STM_GPIO_DIRECTION_ALT_OUT :
STM_GPIO_DIRECTION_OUT);
break;
case stm_pad_gpio_direction_bidir:
BUG_ON(function < 0);
BUG_ON(function > 1);
stm_gpio_direction(gpio, function ?
STM_GPIO_DIRECTION_ALT_BIDIR :
STM_GPIO_DIRECTION_BIDIR);
break;
default:
BUG();
break;
}
return 0;
}
/* sysconf resources ------------------------------------------------------ */
static struct platform_device stx7100_sysconf_device = {
.name = "stm-sysconf",
.id = -1,
.num_resources = 1,
.resource = (struct resource[]) {
STM_PLAT_RESOURCE_MEM(0x19001000, 0x194),
},
.dev.platform_data = &(struct stm_plat_sysconf_data) {
.groups_num = 3,
.groups = (struct stm_plat_sysconf_group []) {
PLAT_SYSCONF_GROUP(SYS_DEV, 0x000),
PLAT_SYSCONF_GROUP(SYS_STA, 0x008),
PLAT_SYSCONF_GROUP(SYS_CFG, 0x100),
},
},
};
/* Early initialisation-----------------------------------------------------*/
/* Initialise devices which are required early in the boot process. */
void __init stx7100_early_device_init(void)
{
struct sysconf_field *sc;
unsigned long devid;
unsigned long chip_7109, chip_revision;
/* Create a PMB mapping so that the ioremap calls these drivers
* will make can be satisfied without having to call get_vm_area
* or cause a fault. Its probably also a good for efficiency as
* there will be lots of devices in this range.
*/
ioremap_nocache(0x18000000, 0x04000000);
/* Initialise PIO and sysconf drivers */
sysconf_early_init(&stx7100_sysconf_device, 1);
stm_gpio_early_init(stx7100_pio_devices,
ARRAY_SIZE(stx7100_pio_devices), 176);
stm_pad_init(ARRAY_SIZE(stx7100_pio_devices) * STM_GPIO_PINS_PER_PORT,
-1, 0, stx7100_pio_config);
sc = sysconf_claim(SYS_DEV, 0, 0, 31, "devid");
devid = sysconf_read(sc);
chip_7109 = (((devid >> 12) & 0x3ff) == 0x02c);
chip_revision = (devid >> 28) + 1;
boot_cpu_data.cut_major = chip_revision;
printk(KERN_INFO "%s version %ld.x\n",
chip_7109 ? "STx7109" : "STx7100", chip_revision);
if (chip_7109) {
boot_cpu_data.type = CPU_STX7109;
sc = sysconf_claim(SYS_STA, 9, 0, 7, "devid");
devid = sysconf_read(sc);
printk(KERN_INFO "Chip version %ld.%ld\n",
(devid >> 4)+1, devid & 0xf);
boot_cpu_data.cut_minor = devid & 0xf;
if (devid == 0x24) {
/*
* See ADCS 8135002 "STI7109 CUT 4.0 CHANGES
* VERSUS CUT 3.X" for details of this change.
*/
printk(KERN_INFO "Setting version to 4.0 to match "
"commercial branding\n");
boot_cpu_data.cut_major = 4;
boot_cpu_data.cut_minor = 0;
}
}
/* Configure the ST40 RTC to source its clock from clockgenB.
* In theory this should be board specific, but so far nobody
* has ever done this. */
sc = sysconf_claim(SYS_CFG, 8, 1, 1, "rtc");
sysconf_write(sc, 1);
/* We haven't configured the LPC, so the sleep instruction may
* do bad things. Thus we disable it here. */
disable_hlt();
}
/* Pre-arch initialisation ------------------------------------------------ */
static int __init stx7100_postcore_setup(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(stx7100_pio_devices); i++)
platform_device_register(&stx7100_pio_devices[i]);
return platform_device_register(&stx7100_emi);
}
postcore_initcall(stx7100_postcore_setup);
/* Late initialisation ---------------------------------------------------- */
static struct platform_device *stx7100_devices[] __initdata = {
&stx7100_fdma_device,
&stx7100_sysconf_device,
&stx7100_rng_hwrandom_device,
&stx7100_rng_devrandom_device,
};
static int __init stx7100_devices_setup(void)
{
stx7100_fdma_setup();
return platform_add_devices(stx7100_devices,
ARRAY_SIZE(stx7100_devices));
}
device_initcall(stx7100_devices_setup);