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alistair23-linux/arch/arm/mach-mxs/mach-mxs.c
Linus Torvalds 16e024f30c Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 
Pull powerpc update from Benjamin Herrenschmidt:
 "The main highlight is probably some base POWER8 support.  There's more
  to come such as transactional memory support but that will wait for
  the next one.

  Overall it's pretty quiet, or rather I've been pretty poor at picking
  things up from patchwork and reviewing them this time around and Kumar
  no better on the FSL side it seems..."

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (73 commits)
  powerpc+of: Rename and fix OF reconfig notifier error inject module
  powerpc: mpc5200: Add a3m071 board support
  powerpc/512x: don't compile any platform DIU code if the DIU is not enabled
  powerpc/mpc52xx: use module_platform_driver macro
  powerpc+of: Export of_reconfig_notifier_[register,unregister]
  powerpc/dma/raidengine: add raidengine device
  powerpc/iommu/fsl: Add PAMU bypass enable register to ccsr_guts struct
  powerpc/mpc85xx: Change spin table to cached memory
  powerpc/fsl-pci: Add PCI controller ATMU PM support
  powerpc/86xx: fsl_pcibios_fixup_bus requires CONFIG_PCI
  drivers/virt: the Freescale hypervisor driver doesn't need to check MSR[GS]
  powerpc/85xx: p1022ds: Use NULL instead of 0 for pointers
  powerpc: Disable relocation on exceptions when kexecing
  powerpc: Enable relocation on during exceptions at boot
  powerpc: Move get_longbusy_msecs into hvcall.h and remove duplicate function
  powerpc: Add wrappers to enable/disable relocation on exceptions
  powerpc: Add set_mode hcall
  powerpc: Setup relocation on exceptions for bare metal systems
  powerpc: Move initial mfspr LPCR out of __init_LPCR
  powerpc: Add relocation on exception vector handlers
  ...
2012-12-18 09:58:09 -08:00

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/*
* Copyright 2012 Freescale Semiconductor, Inc.
* Copyright 2012 Linaro Ltd.
*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
#include <linux/clk.h>
#include <linux/clkdev.h>
#include <linux/can/platform/flexcan.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/init.h>
#include <linux/micrel_phy.h>
#include <linux/mxsfb.h>
#include <linux/of_platform.h>
#include <linux/phy.h>
#include <linux/pinctrl/consumer.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <mach/common.h>
#include <mach/digctl.h>
#include <mach/mxs.h>
static struct fb_videomode mx23evk_video_modes[] = {
{
.name = "Samsung-LMS430HF02",
.refresh = 60,
.xres = 480,
.yres = 272,
.pixclock = 108096, /* picosecond (9.2 MHz) */
.left_margin = 15,
.right_margin = 8,
.upper_margin = 12,
.lower_margin = 4,
.hsync_len = 1,
.vsync_len = 1,
.sync = FB_SYNC_DATA_ENABLE_HIGH_ACT |
FB_SYNC_DOTCLK_FAILING_ACT,
},
};
static struct fb_videomode mx28evk_video_modes[] = {
{
.name = "Seiko-43WVF1G",
.refresh = 60,
.xres = 800,
.yres = 480,
.pixclock = 29851, /* picosecond (33.5 MHz) */
.left_margin = 89,
.right_margin = 164,
.upper_margin = 23,
.lower_margin = 10,
.hsync_len = 10,
.vsync_len = 10,
.sync = FB_SYNC_DATA_ENABLE_HIGH_ACT |
FB_SYNC_DOTCLK_FAILING_ACT,
},
};
static struct fb_videomode m28evk_video_modes[] = {
{
.name = "Ampire AM-800480R2TMQW-T01H",
.refresh = 60,
.xres = 800,
.yres = 480,
.pixclock = 30066, /* picosecond (33.26 MHz) */
.left_margin = 0,
.right_margin = 256,
.upper_margin = 0,
.lower_margin = 45,
.hsync_len = 1,
.vsync_len = 1,
.sync = FB_SYNC_DATA_ENABLE_HIGH_ACT,
},
};
static struct fb_videomode apx4devkit_video_modes[] = {
{
.name = "HannStar PJ70112A",
.refresh = 60,
.xres = 800,
.yres = 480,
.pixclock = 33333, /* picosecond (30.00 MHz) */
.left_margin = 88,
.right_margin = 40,
.upper_margin = 32,
.lower_margin = 13,
.hsync_len = 48,
.vsync_len = 3,
.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT |
FB_SYNC_DATA_ENABLE_HIGH_ACT |
FB_SYNC_DOTCLK_FAILING_ACT,
},
};
static struct fb_videomode apf28dev_video_modes[] = {
{
.name = "LW700",
.refresh = 60,
.xres = 800,
.yres = 480,
.pixclock = 30303, /* picosecond */
.left_margin = 96,
.right_margin = 96, /* at least 3 & 1 */
.upper_margin = 0x14,
.lower_margin = 0x15,
.hsync_len = 64,
.vsync_len = 4,
.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT |
FB_SYNC_DATA_ENABLE_HIGH_ACT |
FB_SYNC_DOTCLK_FAILING_ACT,
},
};
static struct mxsfb_platform_data mxsfb_pdata __initdata;
/*
* MX28EVK_FLEXCAN_SWITCH is shared between both flexcan controllers
*/
#define MX28EVK_FLEXCAN_SWITCH MXS_GPIO_NR(2, 13)
static int flexcan0_en, flexcan1_en;
static void mx28evk_flexcan_switch(void)
{
if (flexcan0_en || flexcan1_en)
gpio_set_value(MX28EVK_FLEXCAN_SWITCH, 1);
else
gpio_set_value(MX28EVK_FLEXCAN_SWITCH, 0);
}
static void mx28evk_flexcan0_switch(int enable)
{
flexcan0_en = enable;
mx28evk_flexcan_switch();
}
static void mx28evk_flexcan1_switch(int enable)
{
flexcan1_en = enable;
mx28evk_flexcan_switch();
}
static struct flexcan_platform_data flexcan_pdata[2];
static struct of_dev_auxdata mxs_auxdata_lookup[] __initdata = {
OF_DEV_AUXDATA("fsl,imx23-lcdif", 0x80030000, NULL, &mxsfb_pdata),
OF_DEV_AUXDATA("fsl,imx28-lcdif", 0x80030000, NULL, &mxsfb_pdata),
OF_DEV_AUXDATA("fsl,imx28-flexcan", 0x80032000, NULL, &flexcan_pdata[0]),
OF_DEV_AUXDATA("fsl,imx28-flexcan", 0x80034000, NULL, &flexcan_pdata[1]),
{ /* sentinel */ }
};
static void __init imx23_timer_init(void)
{
mx23_clocks_init();
}
static struct sys_timer imx23_timer = {
.init = imx23_timer_init,
};
static void __init imx28_timer_init(void)
{
mx28_clocks_init();
}
static struct sys_timer imx28_timer = {
.init = imx28_timer_init,
};
enum mac_oui {
OUI_FSL,
OUI_DENX,
OUI_CRYSTALFONTZ,
};
static void __init update_fec_mac_prop(enum mac_oui oui)
{
struct device_node *np, *from = NULL;
struct property *newmac;
const u32 *ocotp = mxs_get_ocotp();
u8 *macaddr;
u32 val;
int i;
for (i = 0; i < 2; i++) {
np = of_find_compatible_node(from, NULL, "fsl,imx28-fec");
if (!np)
return;
from = np;
if (of_get_property(np, "local-mac-address", NULL))
continue;
newmac = kzalloc(sizeof(*newmac) + 6, GFP_KERNEL);
if (!newmac)
return;
newmac->value = newmac + 1;
newmac->length = 6;
newmac->name = kstrdup("local-mac-address", GFP_KERNEL);
if (!newmac->name) {
kfree(newmac);
return;
}
/*
* OCOTP only stores the last 4 octets for each mac address,
* so hard-code OUI here.
*/
macaddr = newmac->value;
switch (oui) {
case OUI_FSL:
macaddr[0] = 0x00;
macaddr[1] = 0x04;
macaddr[2] = 0x9f;
break;
case OUI_DENX:
macaddr[0] = 0xc0;
macaddr[1] = 0xe5;
macaddr[2] = 0x4e;
break;
case OUI_CRYSTALFONTZ:
macaddr[0] = 0x58;
macaddr[1] = 0xb9;
macaddr[2] = 0xe1;
break;
}
val = ocotp[i];
macaddr[3] = (val >> 16) & 0xff;
macaddr[4] = (val >> 8) & 0xff;
macaddr[5] = (val >> 0) & 0xff;
of_update_property(np, newmac);
}
}
static void __init imx23_evk_init(void)
{
mxsfb_pdata.mode_list = mx23evk_video_modes;
mxsfb_pdata.mode_count = ARRAY_SIZE(mx23evk_video_modes);
mxsfb_pdata.default_bpp = 32;
mxsfb_pdata.ld_intf_width = STMLCDIF_24BIT;
}
static inline void enable_clk_enet_out(void)
{
struct clk *clk = clk_get_sys("enet_out", NULL);
if (!IS_ERR(clk))
clk_prepare_enable(clk);
}
static void __init imx28_evk_init(void)
{
enable_clk_enet_out();
update_fec_mac_prop(OUI_FSL);
mxsfb_pdata.mode_list = mx28evk_video_modes;
mxsfb_pdata.mode_count = ARRAY_SIZE(mx28evk_video_modes);
mxsfb_pdata.default_bpp = 32;
mxsfb_pdata.ld_intf_width = STMLCDIF_24BIT;
mxs_saif_clkmux_select(MXS_DIGCTL_SAIF_CLKMUX_EXTMSTR0);
}
static void __init imx28_evk_post_init(void)
{
if (!gpio_request_one(MX28EVK_FLEXCAN_SWITCH, GPIOF_DIR_OUT,
"flexcan-switch")) {
flexcan_pdata[0].transceiver_switch = mx28evk_flexcan0_switch;
flexcan_pdata[1].transceiver_switch = mx28evk_flexcan1_switch;
}
}
static void __init m28evk_init(void)
{
mxsfb_pdata.mode_list = m28evk_video_modes;
mxsfb_pdata.mode_count = ARRAY_SIZE(m28evk_video_modes);
mxsfb_pdata.default_bpp = 16;
mxsfb_pdata.ld_intf_width = STMLCDIF_18BIT;
}
static void __init sc_sps1_init(void)
{
enable_clk_enet_out();
}
static int apx4devkit_phy_fixup(struct phy_device *phy)
{
phy->dev_flags |= MICREL_PHY_50MHZ_CLK;
return 0;
}
static void __init apx4devkit_init(void)
{
enable_clk_enet_out();
if (IS_BUILTIN(CONFIG_PHYLIB))
phy_register_fixup_for_uid(PHY_ID_KSZ8051, MICREL_PHY_ID_MASK,
apx4devkit_phy_fixup);
mxsfb_pdata.mode_list = apx4devkit_video_modes;
mxsfb_pdata.mode_count = ARRAY_SIZE(apx4devkit_video_modes);
mxsfb_pdata.default_bpp = 32;
mxsfb_pdata.ld_intf_width = STMLCDIF_24BIT;
}
#define ENET0_MDC__GPIO_4_0 MXS_GPIO_NR(4, 0)
#define ENET0_MDIO__GPIO_4_1 MXS_GPIO_NR(4, 1)
#define ENET0_RX_EN__GPIO_4_2 MXS_GPIO_NR(4, 2)
#define ENET0_RXD0__GPIO_4_3 MXS_GPIO_NR(4, 3)
#define ENET0_RXD1__GPIO_4_4 MXS_GPIO_NR(4, 4)
#define ENET0_TX_EN__GPIO_4_6 MXS_GPIO_NR(4, 6)
#define ENET0_TXD0__GPIO_4_7 MXS_GPIO_NR(4, 7)
#define ENET0_TXD1__GPIO_4_8 MXS_GPIO_NR(4, 8)
#define ENET_CLK__GPIO_4_16 MXS_GPIO_NR(4, 16)
#define TX28_FEC_PHY_POWER MXS_GPIO_NR(3, 29)
#define TX28_FEC_PHY_RESET MXS_GPIO_NR(4, 13)
#define TX28_FEC_nINT MXS_GPIO_NR(4, 5)
static const struct gpio tx28_gpios[] __initconst = {
{ ENET0_MDC__GPIO_4_0, GPIOF_OUT_INIT_LOW, "GPIO_4_0" },
{ ENET0_MDIO__GPIO_4_1, GPIOF_OUT_INIT_LOW, "GPIO_4_1" },
{ ENET0_RX_EN__GPIO_4_2, GPIOF_OUT_INIT_LOW, "GPIO_4_2" },
{ ENET0_RXD0__GPIO_4_3, GPIOF_OUT_INIT_LOW, "GPIO_4_3" },
{ ENET0_RXD1__GPIO_4_4, GPIOF_OUT_INIT_LOW, "GPIO_4_4" },
{ ENET0_TX_EN__GPIO_4_6, GPIOF_OUT_INIT_LOW, "GPIO_4_6" },
{ ENET0_TXD0__GPIO_4_7, GPIOF_OUT_INIT_LOW, "GPIO_4_7" },
{ ENET0_TXD1__GPIO_4_8, GPIOF_OUT_INIT_LOW, "GPIO_4_8" },
{ ENET_CLK__GPIO_4_16, GPIOF_OUT_INIT_LOW, "GPIO_4_16" },
{ TX28_FEC_PHY_POWER, GPIOF_OUT_INIT_LOW, "fec-phy-power" },
{ TX28_FEC_PHY_RESET, GPIOF_OUT_INIT_LOW, "fec-phy-reset" },
{ TX28_FEC_nINT, GPIOF_DIR_IN, "fec-int" },
};
static void __init tx28_post_init(void)
{
struct device_node *np;
struct platform_device *pdev;
struct pinctrl *pctl;
int ret;
enable_clk_enet_out();
np = of_find_compatible_node(NULL, NULL, "fsl,imx28-fec");
pdev = of_find_device_by_node(np);
if (!pdev) {
pr_err("%s: failed to find fec device\n", __func__);
return;
}
pctl = pinctrl_get_select(&pdev->dev, "gpio_mode");
if (IS_ERR(pctl)) {
pr_err("%s: failed to get pinctrl state\n", __func__);
return;
}
ret = gpio_request_array(tx28_gpios, ARRAY_SIZE(tx28_gpios));
if (ret) {
pr_err("%s: failed to request gpios: %d\n", __func__, ret);
return;
}
/* Power up fec phy */
gpio_set_value(TX28_FEC_PHY_POWER, 1);
msleep(26); /* 25ms according to data sheet */
/* Mode strap pins */
gpio_set_value(ENET0_RX_EN__GPIO_4_2, 1);
gpio_set_value(ENET0_RXD0__GPIO_4_3, 1);
gpio_set_value(ENET0_RXD1__GPIO_4_4, 1);
udelay(100); /* minimum assertion time for nRST */
/* Deasserting FEC PHY RESET */
gpio_set_value(TX28_FEC_PHY_RESET, 1);
pinctrl_put(pctl);
}
static void __init cfa10049_init(void)
{
enable_clk_enet_out();
update_fec_mac_prop(OUI_CRYSTALFONTZ);
}
static void __init apf28_init(void)
{
enable_clk_enet_out();
mxsfb_pdata.mode_list = apf28dev_video_modes;
mxsfb_pdata.mode_count = ARRAY_SIZE(apf28dev_video_modes);
mxsfb_pdata.default_bpp = 16;
mxsfb_pdata.ld_intf_width = STMLCDIF_16BIT;
}
static void __init mxs_machine_init(void)
{
if (of_machine_is_compatible("fsl,imx28-evk"))
imx28_evk_init();
else if (of_machine_is_compatible("fsl,imx23-evk"))
imx23_evk_init();
else if (of_machine_is_compatible("denx,m28evk"))
m28evk_init();
else if (of_machine_is_compatible("bluegiga,apx4devkit"))
apx4devkit_init();
else if (of_machine_is_compatible("crystalfontz,cfa10049"))
cfa10049_init();
else if (of_machine_is_compatible("armadeus,imx28-apf28"))
apf28_init();
else if (of_machine_is_compatible("schulercontrol,imx28-sps1"))
sc_sps1_init();
of_platform_populate(NULL, of_default_bus_match_table,
mxs_auxdata_lookup, NULL);
if (of_machine_is_compatible("karo,tx28"))
tx28_post_init();
if (of_machine_is_compatible("fsl,imx28-evk"))
imx28_evk_post_init();
}
static const char *imx23_dt_compat[] __initdata = {
"fsl,imx23",
NULL,
};
static const char *imx28_dt_compat[] __initdata = {
"fsl,imx28",
NULL,
};
DT_MACHINE_START(IMX23, "Freescale i.MX23 (Device Tree)")
.map_io = mx23_map_io,
.init_irq = icoll_init_irq,
.handle_irq = icoll_handle_irq,
.timer = &imx23_timer,
.init_machine = mxs_machine_init,
.dt_compat = imx23_dt_compat,
.restart = mxs_restart,
MACHINE_END
DT_MACHINE_START(IMX28, "Freescale i.MX28 (Device Tree)")
.map_io = mx28_map_io,
.init_irq = icoll_init_irq,
.handle_irq = icoll_handle_irq,
.timer = &imx28_timer,
.init_machine = mxs_machine_init,
.dt_compat = imx28_dt_compat,
.restart = mxs_restart,
MACHINE_END
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