arch/arm/mach-davinci/board-omapl138-hawk.c

   1 /*
   2  * Hawkboard.org based on TI's OMAP-L138 Platform
   3  *
   4  * Initial code: Syed Mohammed Khasim
   5  *
   6  * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com
   7  *
   8  * This file is licensed under the terms of the GNU General Public License
   9  * version 2. This program is licensed "as is" without any warranty of
  10  * any kind, whether express or implied.
  11  */
  12 #include <linux/kernel.h>
  13 #include <linux/init.h>
  14 #include <linux/console.h>
  15 #include <linux/gpio.h>
  16 #include <linux/gpio/machine.h>
  17 #include <linux/platform_data/gpio-davinci.h>
  18 #include <linux/regulator/machine.h>
  19
  20 #include <asm/mach-types.h>
  21 #include <asm/mach/arch.h>
  22
  23 #include <mach/common.h>
  24 #include "cp_intc.h"
  25 #include <mach/da8xx.h>
  26 #include <mach/mux.h>
  27
  28 #define HAWKBOARD_PHY_ID                "davinci_mdio-0:07"
  29
  30 #define DA850_USB1_VBUS_PIN             GPIO_TO_PIN(2, 4)
  31 #define DA850_USB1_OC_PIN               GPIO_TO_PIN(6, 13)
  32
  33 static short omapl138_hawk_mii_pins[] __initdata = {
  34         DA850_MII_TXEN, DA850_MII_TXCLK, DA850_MII_COL, DA850_MII_TXD_3,
  35         DA850_MII_TXD_2, DA850_MII_TXD_1, DA850_MII_TXD_0, DA850_MII_RXER,
  36         DA850_MII_CRS, DA850_MII_RXCLK, DA850_MII_RXDV, DA850_MII_RXD_3,
  37         DA850_MII_RXD_2, DA850_MII_RXD_1, DA850_MII_RXD_0, DA850_MDIO_CLK,
  38         DA850_MDIO_D,
  39         -1
  40 };
  41
  42 static __init void omapl138_hawk_config_emac(void)
  43 {
  44         void __iomem *cfgchip3 = DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP3_REG);
  45         int ret;
  46         u32 val;
  47         struct davinci_soc_info *soc_info = &davinci_soc_info;
  48
  49         val = __raw_readl(cfgchip3);
  50         val &= ~BIT(8);
  51         ret = davinci_cfg_reg_list(omapl138_hawk_mii_pins);
  52         if (ret) {
  53                 pr_warn("%s: CPGMAC/MII mux setup failed: %d\n", __func__, ret);
  54                 return;
  55         }
  56
  57         /* configure the CFGCHIP3 register for MII */
  58         __raw_writel(val, cfgchip3);
  59         pr_info("EMAC: MII PHY configured\n");
  60
  61         soc_info->emac_pdata->phy_id = HAWKBOARD_PHY_ID;
  62
  63         ret = da8xx_register_emac();
  64         if (ret)
  65                 pr_warn("%s: EMAC registration failed: %d\n", __func__, ret);
  66 }
  67
  68 /*
  69  * The following EDMA channels/slots are not being used by drivers (for
  70  * example: Timer, GPIO, UART events etc) on da850/omap-l138 EVM/Hawkboard,
  71  * hence they are being reserved for codecs on the DSP side.
  72  */
  73 static const s16 da850_dma0_rsv_chans[][2] = {
  74         /* (offset, number) */
  75         { 8,  6},
  76         {24,  4},
  77         {30,  2},
  78         {-1, -1}
  79 };
  80
  81 static const s16 da850_dma0_rsv_slots[][2] = {
  82         /* (offset, number) */
  83         { 8,  6},
  84         {24,  4},
  85         {30, 50},
  86         {-1, -1}
  87 };
  88
  89 static const s16 da850_dma1_rsv_chans[][2] = {
  90         /* (offset, number) */
  91         { 0, 28},
  92         {30,  2},
  93         {-1, -1}
  94 };
  95
  96 static const s16 da850_dma1_rsv_slots[][2] = {
  97         /* (offset, number) */
  98         { 0, 28},
  99         {30, 90},
 100         {-1, -1}
 101 };
 102
 103 static struct edma_rsv_info da850_edma_cc0_rsv = {
 104         .rsv_chans      = da850_dma0_rsv_chans,
 105         .rsv_slots      = da850_dma0_rsv_slots,
 106 };
 107
 108 static struct edma_rsv_info da850_edma_cc1_rsv = {
 109         .rsv_chans      = da850_dma1_rsv_chans,
 110         .rsv_slots      = da850_dma1_rsv_slots,
 111 };
 112
 113 static struct edma_rsv_info *da850_edma_rsv[2] = {
 114         &da850_edma_cc0_rsv,
 115         &da850_edma_cc1_rsv,
 116 };
 117
 118 static const short hawk_mmcsd0_pins[] = {
 119         DA850_MMCSD0_DAT_0, DA850_MMCSD0_DAT_1, DA850_MMCSD0_DAT_2,
 120         DA850_MMCSD0_DAT_3, DA850_MMCSD0_CLK, DA850_MMCSD0_CMD,
 121         DA850_GPIO3_12, DA850_GPIO3_13,
 122         -1
 123 };
 124
 125 static struct gpiod_lookup_table mmc_gpios_table = {
 126         .dev_id = "da830-mmc.0",
 127         .table = {
 128                 /* CD: gpio3_12: gpio60: chip 1 contains gpio range 32-63*/
 129                 GPIO_LOOKUP("davinci_gpio.1", 28, "cd", GPIO_ACTIVE_LOW),
 130                 GPIO_LOOKUP("davinci_gpio.1", 29, "wp", GPIO_ACTIVE_LOW),
 131         },
 132 };
 133
 134 static struct davinci_mmc_config da850_mmc_config = {
 135         .wires          = 4,
 136         .max_freq       = 50000000,
 137         .caps           = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
 138 };
 139
 140 static __init void omapl138_hawk_mmc_init(void)
 141 {
 142         int ret;
 143
 144         ret = davinci_cfg_reg_list(hawk_mmcsd0_pins);
 145         if (ret) {
 146                 pr_warn("%s: MMC/SD0 mux setup failed: %d\n", __func__, ret);
 147                 return;
 148         }
 149
 150         gpiod_add_lookup_table(&mmc_gpios_table);
 151
 152         ret = da8xx_register_mmcsd0(&da850_mmc_config);
 153         if (ret) {
 154                 pr_warn("%s: MMC/SD0 registration failed: %d\n", __func__, ret);
 155                 goto mmc_setup_mmcsd_fail;
 156         }
 157
 158         return;
 159
 160 mmc_setup_mmcsd_fail:
 161         gpiod_remove_lookup_table(&mmc_gpios_table);
 162 }
 163
 164 static irqreturn_t omapl138_hawk_usb_ocic_irq(int irq, void *dev_id);
 165 static da8xx_ocic_handler_t hawk_usb_ocic_handler;
 166
 167 static const short da850_hawk_usb11_pins[] = {
 168         DA850_GPIO2_4, DA850_GPIO6_13,
 169         -1
 170 };
 171
 172 static int hawk_usb_set_power(unsigned port, int on)
 173 {
 174         gpio_set_value(DA850_USB1_VBUS_PIN, on);
 175         return 0;
 176 }
 177
 178 static int hawk_usb_get_power(unsigned port)
 179 {
 180         return gpio_get_value(DA850_USB1_VBUS_PIN);
 181 }
 182
 183 static int hawk_usb_get_oci(unsigned port)
 184 {
 185         return !gpio_get_value(DA850_USB1_OC_PIN);
 186 }
 187
 188 static int hawk_usb_ocic_notify(da8xx_ocic_handler_t handler)
 189 {
 190         int irq         = gpio_to_irq(DA850_USB1_OC_PIN);
 191         int error       = 0;
 192
 193         if (handler != NULL) {
 194                 hawk_usb_ocic_handler = handler;
 195
 196                 error = request_irq(irq, omapl138_hawk_usb_ocic_irq,
 197                                         IRQF_TRIGGER_RISING |
 198                                         IRQF_TRIGGER_FALLING,
 199                                         "OHCI over-current indicator", NULL);
 200                 if (error)
 201                         pr_err("%s: could not request IRQ to watch "
 202                                 "over-current indicator changes\n", __func__);
 203         } else {
 204                 free_irq(irq, NULL);
 205         }
 206         return error;
 207 }
 208
 209 static struct da8xx_ohci_root_hub omapl138_hawk_usb11_pdata = {
 210         .set_power      = hawk_usb_set_power,
 211         .get_power      = hawk_usb_get_power,
 212         .get_oci        = hawk_usb_get_oci,
 213         .ocic_notify    = hawk_usb_ocic_notify,
 214         /* TPS2087 switch @ 5V */
 215         .potpgt         = (3 + 1) / 2,  /* 3 ms max */
 216 };
 217
 218 static irqreturn_t omapl138_hawk_usb_ocic_irq(int irq, void *dev_id)
 219 {
 220         hawk_usb_ocic_handler(&omapl138_hawk_usb11_pdata, 1);
 221         return IRQ_HANDLED;
 222 }
 223
 224 static __init void omapl138_hawk_usb_init(void)
 225 {
 226         int ret;
 227
 228         ret = davinci_cfg_reg_list(da850_hawk_usb11_pins);
 229         if (ret) {
 230                 pr_warn("%s: USB 1.1 PinMux setup failed: %d\n", __func__, ret);
 231                 return;
 232         }
 233
 234         ret = da8xx_register_usb20_phy_clk(false);
 235         if (ret)
 236                 pr_warn("%s: USB 2.0 PHY CLK registration failed: %d\n",
 237                         __func__, ret);
 238
 239         ret = da8xx_register_usb11_phy_clk(false);
 240         if (ret)
 241                 pr_warn("%s: USB 1.1 PHY CLK registration failed: %d\n",
 242                         __func__, ret);
 243
 244         ret = da8xx_register_usb_phy();
 245         if (ret)
 246                 pr_warn("%s: USB PHY registration failed: %d\n",
 247                         __func__, ret);
 248
 249         ret = gpio_request_one(DA850_USB1_VBUS_PIN,
 250                         GPIOF_DIR_OUT, "USB1 VBUS");
 251         if (ret < 0) {
 252                 pr_err("%s: failed to request GPIO for USB 1.1 port "
 253                         "power control: %d\n", __func__, ret);
 254                 return;
 255         }
 256
 257         ret = gpio_request_one(DA850_USB1_OC_PIN,
 258                         GPIOF_DIR_IN, "USB1 OC");
 259         if (ret < 0) {
 260                 pr_err("%s: failed to request GPIO for USB 1.1 port "
 261                         "over-current indicator: %d\n", __func__, ret);
 262                 goto usb11_setup_oc_fail;
 263         }
 264
 265         ret = da8xx_register_usb11(&omapl138_hawk_usb11_pdata);
 266         if (ret) {
 267                 pr_warn("%s: USB 1.1 registration failed: %d\n", __func__, ret);
 268                 goto usb11_setup_fail;
 269         }
 270
 271         return;
 272
 273 usb11_setup_fail:
 274         gpio_free(DA850_USB1_OC_PIN);
 275 usb11_setup_oc_fail:
 276         gpio_free(DA850_USB1_VBUS_PIN);
 277 }
 278
 279 static __init void omapl138_hawk_init(void)
 280 {
 281         int ret;
 282
 283         ret = da8xx_register_cfgchip();
 284         if (ret)
 285                 pr_warn("%s: CFGCHIP registration failed: %d\n", __func__, ret);
 286
 287         ret = da850_register_gpio();
 288         if (ret)
 289                 pr_warn("%s: GPIO init failed: %d\n", __func__, ret);
 290
 291         davinci_serial_init(da8xx_serial_device);
 292
 293         omapl138_hawk_config_emac();
 294
 295         ret = da850_register_edma(da850_edma_rsv);
 296         if (ret)
 297                 pr_warn("%s: EDMA registration failed: %d\n", __func__, ret);
 298
 299         omapl138_hawk_mmc_init();
 300
 301         omapl138_hawk_usb_init();
 302
 303         ret = da8xx_register_watchdog();
 304         if (ret)
 305                 pr_warn("%s: watchdog registration failed: %d\n",
 306                         __func__, ret);
 307
 308         ret = da8xx_register_rproc();
 309         if (ret)
 310                 pr_warn("%s: dsp/rproc registration failed: %d\n",
 311                         __func__, ret);
 312
 313         regulator_has_full_constraints();
 314 }
 315
 316 #ifdef CONFIG_SERIAL_8250_CONSOLE
 317 static int __init omapl138_hawk_console_init(void)
 318 {
 319         if (!machine_is_omapl138_hawkboard())
 320                 return 0;
 321
 322         return add_preferred_console("ttyS", 2, "115200");
 323 }
 324 console_initcall(omapl138_hawk_console_init);
 325 #endif
 326
 327 static void __init omapl138_hawk_map_io(void)
 328 {
 329         da850_init();
 330 }
 331
 332 MACHINE_START(OMAPL138_HAWKBOARD, "AM18x/OMAP-L138 Hawkboard")
 333         .atag_offset    = 0x100,
 334         .map_io         = omapl138_hawk_map_io,
 335         .init_irq       = cp_intc_init,
 336         .init_time      = davinci_timer_init,
 337         .init_machine   = omapl138_hawk_init,
 338         .init_late      = davinci_init_late,
 339         .dma_zone_size  = SZ_128M,
 340         .restart        = da8xx_restart,
 341         .reserve        = da8xx_rproc_reserve_cma,
 342 MACHINE_END