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