arch/ppc/platforms/mpc8272ads_setup.c

   1 /*
   2  * arch/ppc/platforms/82xx/pq2ads_pd.c
   3  *
   4  * MPC82xx Board-specific PlatformDevice descriptions
   5  *
   6  * 2005 (c) MontaVista Software, Inc.
   7  * Vitaly Bordug <vbordug@ru.mvista.com>
   8  *
   9  * This file is licensed under the terms of the GNU General Public License
  10  * version 2. This program is licensed "as is" without any warranty of any
  11  * kind, whether express or implied.
  12  */
  13
  14
  15 #include <linux/init.h>
  16 #include <linux/module.h>
  17 #include <linux/device.h>
  18 #include <linux/ioport.h>
  19 #include <linux/fs_enet_pd.h>
  20 #include <linux/platform_device.h>
  21
  22 #include <asm/io.h>
  23 #include <asm/mpc8260.h>
  24 #include <asm/cpm2.h>
  25 #include <asm/immap_cpm2.h>
  26 #include <asm/irq.h>
  27 #include <asm/ppc_sys.h>
  28 #include <asm/ppcboot.h>
  29 #include <linux/fs_uart_pd.h>
  30
  31 #include "pq2ads_pd.h"
  32
  33 static void init_fcc1_ioports(void);
  34 static void init_fcc2_ioports(void);
  35 static void init_scc1_uart_ioports(void);
  36 static void init_scc4_uart_ioports(void);
  37
  38 static struct fs_uart_platform_info mpc8272_uart_pdata[] = {
  39         [fsid_scc1_uart] = {
  40                 .init_ioports   = init_scc1_uart_ioports,
  41                 .fs_no          = fsid_scc1_uart,
  42                 .brg            = 1,
  43                 .tx_num_fifo    = 4,
  44                 .tx_buf_size    = 32,
  45                 .rx_num_fifo    = 4,
  46                 .rx_buf_size    = 32,
  47         },
  48         [fsid_scc4_uart] = {
  49                 .init_ioports   = init_scc4_uart_ioports,
  50                 .fs_no          = fsid_scc4_uart,
  51                 .brg            = 4,
  52                 .tx_num_fifo    = 4,
  53                 .tx_buf_size    = 32,
  54                 .rx_num_fifo    = 4,
  55                 .rx_buf_size    = 32,
  56         },
  57 };
  58
  59 static struct fs_mii_bus_info mii_bus_info = {
  60         .method                 = fsmii_bitbang,
  61         .id                     = 0,
  62         .i.bitbang = {
  63                 .mdio_port      = fsiop_portc,
  64                 .mdio_bit       = 18,
  65                 .mdc_port       = fsiop_portc,
  66                 .mdc_bit        = 19,
  67                 .delay          = 1,
  68         },
  69 };
  70
  71 static struct fs_platform_info mpc82xx_fcc1_pdata = {
  72         .fs_no          = fsid_fcc1,
  73         .cp_page        = CPM_CR_FCC1_PAGE,
  74         .cp_block       = CPM_CR_FCC1_SBLOCK,
  75         .clk_trx        = (PC_F1RXCLK | PC_F1TXCLK),
  76         .clk_route      = CMX1_CLK_ROUTE,
  77         .clk_mask       = CMX1_CLK_MASK,
  78         .init_ioports   = init_fcc1_ioports,
  79
  80         .phy_addr       = 0,
  81 #ifdef PHY_INTERRUPT
  82         .phy_irq        = PHY_INTERRUPT,
  83 #else
  84         .phy_irq        = -1;
  85 #endif
  86         .mem_offset     = FCC1_MEM_OFFSET,
  87         .bus_info       = &mii_bus_info,
  88         .rx_ring        = 32,
  89         .tx_ring        = 32,
  90         .rx_copybreak   = 240,
  91         .use_napi       = 0,
  92         .napi_weight    = 17,
  93 };
  94
  95 static struct fs_platform_info mpc82xx_fcc2_pdata = {
  96         .fs_no          = fsid_fcc2,
  97         .cp_page        = CPM_CR_FCC2_PAGE,
  98         .cp_block       = CPM_CR_FCC2_SBLOCK,
  99         .clk_trx        = (PC_F2RXCLK | PC_F2TXCLK),
 100         .clk_route      = CMX2_CLK_ROUTE,
 101         .clk_mask       = CMX2_CLK_MASK,
 102         .init_ioports   = init_fcc2_ioports,
 103
 104         .phy_addr       = 3,
 105 #ifdef PHY_INTERRUPT
 106         .phy_irq        = PHY_INTERRUPT,
 107 #else
 108         .phy_irq        = -1;
 109 #endif
 110         .mem_offset     = FCC2_MEM_OFFSET,
 111         .bus_info       = &mii_bus_info,
 112         .rx_ring        = 32,
 113         .tx_ring        = 32,
 114         .rx_copybreak   = 240,
 115         .use_napi       = 0,
 116         .napi_weight    = 17,
 117 };
 118
 119 static void init_fcc1_ioports(void)
 120 {
 121         struct io_port *io;
 122         u32 tempval;
 123         cpm2_map_t* immap = ioremap(CPM_MAP_ADDR, sizeof(cpm2_map_t));
 124         u32 *bcsr = ioremap(BCSR_ADDR+4, sizeof(u32));
 125
 126         io = &immap->im_ioport;
 127
 128         /* Enable the PHY */
 129         clrbits32(bcsr, BCSR1_FETHIEN);
 130         setbits32(bcsr, BCSR1_FETH_RST);
 131
 132         /* FCC1 pins are on port A/C. */
 133         /* Configure port A and C pins for FCC1 Ethernet. */
 134
 135         tempval = in_be32(&io->iop_pdira);
 136         tempval &= ~PA1_DIRA0;
 137         tempval |= PA1_DIRA1;
 138         out_be32(&io->iop_pdira, tempval);
 139
 140         tempval = in_be32(&io->iop_psora);
 141         tempval &= ~PA1_PSORA0;
 142         tempval |= PA1_PSORA1;
 143         out_be32(&io->iop_psora, tempval);
 144
 145         setbits32(&io->iop_ppara,PA1_DIRA0 | PA1_DIRA1);
 146
 147         /* Alter clocks */
 148         tempval = PC_F1TXCLK|PC_F1RXCLK;
 149
 150         clrbits32(&io->iop_psorc, tempval);
 151         clrbits32(&io->iop_pdirc, tempval);
 152         setbits32(&io->iop_pparc, tempval);
 153
 154         clrbits32(&immap->im_cpmux.cmx_fcr, CMX1_CLK_MASK);
 155         setbits32(&immap->im_cpmux.cmx_fcr, CMX1_CLK_ROUTE);
 156         iounmap(bcsr);
 157         iounmap(immap);
 158 }
 159
 160 static void init_fcc2_ioports(void)
 161 {
 162         cpm2_map_t* immap = ioremap(CPM_MAP_ADDR, sizeof(cpm2_map_t));
 163         u32 *bcsr = ioremap(BCSR_ADDR+12, sizeof(u32));
 164
 165         struct io_port *io;
 166         u32 tempval;
 167
 168         immap = cpm2_immr;
 169
 170         io = &immap->im_ioport;
 171
 172         /* Enable the PHY */
 173         clrbits32(bcsr, BCSR3_FETHIEN2);
 174         setbits32(bcsr, BCSR3_FETH2_RST);
 175
 176         /* FCC2 are port B/C. */
 177         /* Configure port A and C pins for FCC2 Ethernet. */
 178
 179         tempval = in_be32(&io->iop_pdirb);
 180         tempval &= ~PB2_DIRB0;
 181         tempval |= PB2_DIRB1;
 182         out_be32(&io->iop_pdirb, tempval);
 183
 184         tempval = in_be32(&io->iop_psorb);
 185         tempval &= ~PB2_PSORB0;
 186         tempval |= PB2_PSORB1;
 187         out_be32(&io->iop_psorb, tempval);
 188
 189         setbits32(&io->iop_pparb,PB2_DIRB0 | PB2_DIRB1);
 190
 191         tempval = PC_F2RXCLK|PC_F2TXCLK;
 192
 193         /* Alter clocks */
 194         clrbits32(&io->iop_psorc,tempval);
 195         clrbits32(&io->iop_pdirc,tempval);
 196         setbits32(&io->iop_pparc,tempval);
 197
 198         clrbits32(&immap->im_cpmux.cmx_fcr, CMX2_CLK_MASK);
 199         setbits32(&immap->im_cpmux.cmx_fcr, CMX2_CLK_ROUTE);
 200
 201         iounmap(bcsr);
 202         iounmap(immap);
 203 }
 204
 205
 206 static void __init mpc8272ads_fixup_enet_pdata(struct platform_device *pdev,
 207                                               int idx)
 208 {
 209         bd_t* bi = (void*)__res;
 210         int fs_no = fsid_fcc1+pdev->id-1;
 211
 212         mpc82xx_fcc1_pdata.dpram_offset = mpc82xx_fcc2_pdata.dpram_offset = (u32)cpm2_immr->im_dprambase;
 213         mpc82xx_fcc1_pdata.fcc_regs_c = mpc82xx_fcc2_pdata.fcc_regs_c = (u32)cpm2_immr->im_fcc_c;
 214
 215         switch(fs_no) {
 216                 case fsid_fcc1:
 217                         memcpy(&mpc82xx_fcc1_pdata.macaddr,bi->bi_enetaddr,6);
 218                         pdev->dev.platform_data = &mpc82xx_fcc1_pdata;
 219                 break;
 220                 case fsid_fcc2:
 221                         memcpy(&mpc82xx_fcc2_pdata.macaddr,bi->bi_enetaddr,6);
 222                         mpc82xx_fcc2_pdata.macaddr[5] ^= 1;
 223                         pdev->dev.platform_data = &mpc82xx_fcc2_pdata;
 224                 break;
 225         }
 226 }
 227
 228 static void mpc8272ads_fixup_uart_pdata(struct platform_device *pdev,
 229                                               int idx)
 230 {
 231         bd_t *bd = (bd_t *) __res;
 232         struct fs_uart_platform_info *pinfo;
 233         int num = ARRAY_SIZE(mpc8272_uart_pdata);
 234         int id = fs_uart_id_scc2fsid(idx);
 235
 236         /* no need to alter anything if console */
 237         if ((id <= num) && (!pdev->dev.platform_data)) {
 238                 pinfo = &mpc8272_uart_pdata[id];
 239                 pinfo->uart_clk = bd->bi_intfreq;
 240                 pdev->dev.platform_data = pinfo;
 241         }
 242 }
 243
 244 static void init_scc1_uart_ioports(void)
 245 {
 246         cpm2_map_t* immap = ioremap(CPM_MAP_ADDR, sizeof(cpm2_map_t));
 247
 248         /* SCC1 is only on port D */
 249         setbits32(&immap->im_ioport.iop_ppard,0x00000003);
 250         clrbits32(&immap->im_ioport.iop_psord,0x00000001);
 251         setbits32(&immap->im_ioport.iop_psord,0x00000002);
 252         clrbits32(&immap->im_ioport.iop_pdird,0x00000001);
 253         setbits32(&immap->im_ioport.iop_pdird,0x00000002);
 254
 255         /* Wire BRG1 to SCC1 */
 256         clrbits32(&immap->im_cpmux.cmx_scr,0x00ffffff);
 257
 258         iounmap(immap);
 259 }
 260
 261 static void init_scc4_uart_ioports(void)
 262 {
 263         cpm2_map_t* immap = ioremap(CPM_MAP_ADDR, sizeof(cpm2_map_t));
 264
 265         setbits32(&immap->im_ioport.iop_ppard,0x00000600);
 266         clrbits32(&immap->im_ioport.iop_psord,0x00000600);
 267         clrbits32(&immap->im_ioport.iop_pdird,0x00000200);
 268         setbits32(&immap->im_ioport.iop_pdird,0x00000400);
 269
 270         /* Wire BRG4 to SCC4 */
 271         clrbits32(&immap->im_cpmux.cmx_scr,0x000000ff);
 272         setbits32(&immap->im_cpmux.cmx_scr,0x0000001b);
 273
 274         iounmap(immap);
 275 }
 276
 277 static int mpc8272ads_platform_notify(struct device *dev)
 278 {
 279         static const struct platform_notify_dev_map dev_map[] = {
 280                 {
 281                         .bus_id = "fsl-cpm-fcc",
 282                         .rtn = mpc8272ads_fixup_enet_pdata,
 283                 },
 284                 {
 285                         .bus_id = "fsl-cpm-scc:uart",
 286                         .rtn = mpc8272ads_fixup_uart_pdata,
 287                 },
 288                 {
 289                         .bus_id = NULL
 290                 }
 291         };
 292         platform_notify_map(dev_map,dev);
 293
 294         return 0;
 295
 296 }
 297
 298 int __init mpc8272ads_init(void)
 299 {
 300         printk(KERN_NOTICE "mpc8272ads: Init\n");
 301
 302         platform_notify = mpc8272ads_platform_notify;
 303
 304         ppc_sys_device_initfunc();
 305
 306         ppc_sys_device_disable_all();
 307         ppc_sys_device_enable(MPC82xx_CPM_FCC1);
 308         ppc_sys_device_enable(MPC82xx_CPM_FCC2);
 309
 310         /* to be ready for console, let's attach pdata here */
 311 #ifdef CONFIG_SERIAL_CPM_SCC1
 312         ppc_sys_device_setfunc(MPC82xx_CPM_SCC1, PPC_SYS_FUNC_UART);
 313         ppc_sys_device_enable(MPC82xx_CPM_SCC1);
 314
 315 #endif
 316
 317 #ifdef CONFIG_SERIAL_CPM_SCC4
 318         ppc_sys_device_setfunc(MPC82xx_CPM_SCC4, PPC_SYS_FUNC_UART);
 319         ppc_sys_device_enable(MPC82xx_CPM_SCC4);
 320 #endif
 321
 322
 323         return 0;
 324 }
 325
 326 /*
 327    To prevent confusion, console selection is gross:
 328    by 0 assumed SCC1 and by 1 assumed SCC4
 329  */
 330 struct platform_device* early_uart_get_pdev(int index)
 331 {
 332         bd_t *bd = (bd_t *) __res;
 333         struct fs_uart_platform_info *pinfo;
 334
 335         struct platform_device* pdev = NULL;
 336         if(index) { /*assume SCC4 here*/
 337                 pdev = &ppc_sys_platform_devices[MPC82xx_CPM_SCC4];
 338                 pinfo = &mpc8272_uart_pdata[fsid_scc4_uart];
 339         } else { /*over SCC1*/
 340                 pdev = &ppc_sys_platform_devices[MPC82xx_CPM_SCC1];
 341                 pinfo = &mpc8272_uart_pdata[fsid_scc1_uart];
 342         }
 343
 344         pinfo->uart_clk = bd->bi_intfreq;
 345         pdev->dev.platform_data = pinfo;
 346         ppc_sys_fixup_mem_resource(pdev, CPM_MAP_ADDR);
 347         return NULL;
 348 }
 349
 350 arch_initcall(mpc8272ads_init);