Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Broadcom specific AMBA |
| 3 | * ChipCommon core driver |
| 4 | * |
| 5 | * Copyright 2005, Broadcom Corporation |
Michael Büsch | eb032b9 | 2011-07-04 20:50:05 +0200 | [diff] [blame] | 6 | * Copyright 2006, 2007, Michael Buesch <m@bues.ch> |
Hauke Mehrtens | 56fd5f0 | 2012-12-05 18:45:59 +0100 | [diff] [blame] | 7 | * Copyright 2012, Hauke Mehrtens <hauke@hauke-m.de> |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 8 | * |
| 9 | * Licensed under the GNU/GPL. See COPYING for details. |
| 10 | */ |
| 11 | |
| 12 | #include "bcma_private.h" |
Hauke Mehrtens | a22a311 | 2012-12-05 18:46:01 +0100 | [diff] [blame] | 13 | #include <linux/bcm47xx_wdt.h> |
Paul Gortmaker | 44a8e37 | 2011-07-27 21:21:04 -0400 | [diff] [blame] | 14 | #include <linux/export.h> |
Hauke Mehrtens | a4855f39 | 2012-12-05 18:46:02 +0100 | [diff] [blame] | 15 | #include <linux/platform_device.h> |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 16 | #include <linux/bcma/bcma.h> |
| 17 | |
Rafał Miłecki | 4c81aca | 2016-01-22 18:02:54 +0100 | [diff] [blame] | 18 | static void bcma_chipco_serial_init(struct bcma_drv_cc *cc); |
| 19 | |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 20 | static inline u32 bcma_cc_write32_masked(struct bcma_drv_cc *cc, u16 offset, |
| 21 | u32 mask, u32 value) |
| 22 | { |
| 23 | value &= mask; |
| 24 | value |= bcma_cc_read32(cc, offset) & ~mask; |
| 25 | bcma_cc_write32(cc, offset, value); |
| 26 | |
| 27 | return value; |
| 28 | } |
| 29 | |
Hauke Mehrtens | 6951618 | 2013-03-27 17:23:11 +0100 | [diff] [blame] | 30 | u32 bcma_chipco_get_alp_clock(struct bcma_drv_cc *cc) |
Hauke Mehrtens | 56fd5f0 | 2012-12-05 18:45:59 +0100 | [diff] [blame] | 31 | { |
| 32 | if (cc->capabilities & BCMA_CC_CAP_PMU) |
Rafał Miłecki | 5b5ac41 | 2012-12-07 12:56:56 +0100 | [diff] [blame] | 33 | return bcma_pmu_get_alp_clock(cc); |
Hauke Mehrtens | 56fd5f0 | 2012-12-05 18:45:59 +0100 | [diff] [blame] | 34 | |
| 35 | return 20000000; |
| 36 | } |
Hauke Mehrtens | 6951618 | 2013-03-27 17:23:11 +0100 | [diff] [blame] | 37 | EXPORT_SYMBOL_GPL(bcma_chipco_get_alp_clock); |
Hauke Mehrtens | 56fd5f0 | 2012-12-05 18:45:59 +0100 | [diff] [blame] | 38 | |
Hauke Mehrtens | f6354c8 | 2012-12-05 18:46:00 +0100 | [diff] [blame] | 39 | static u32 bcma_chipco_watchdog_get_max_timer(struct bcma_drv_cc *cc) |
| 40 | { |
| 41 | struct bcma_bus *bus = cc->core->bus; |
| 42 | u32 nb; |
| 43 | |
| 44 | if (cc->capabilities & BCMA_CC_CAP_PMU) { |
| 45 | if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4706) |
| 46 | nb = 32; |
| 47 | else if (cc->core->id.rev < 26) |
| 48 | nb = 16; |
| 49 | else |
| 50 | nb = (cc->core->id.rev >= 37) ? 32 : 24; |
| 51 | } else { |
| 52 | nb = 28; |
| 53 | } |
| 54 | if (nb == 32) |
| 55 | return 0xffffffff; |
| 56 | else |
| 57 | return (1 << nb) - 1; |
| 58 | } |
| 59 | |
Hauke Mehrtens | a22a311 | 2012-12-05 18:46:01 +0100 | [diff] [blame] | 60 | static u32 bcma_chipco_watchdog_timer_set_wdt(struct bcm47xx_wdt *wdt, |
| 61 | u32 ticks) |
| 62 | { |
| 63 | struct bcma_drv_cc *cc = bcm47xx_wdt_get_drvdata(wdt); |
| 64 | |
| 65 | return bcma_chipco_watchdog_timer_set(cc, ticks); |
| 66 | } |
| 67 | |
| 68 | static u32 bcma_chipco_watchdog_timer_set_ms_wdt(struct bcm47xx_wdt *wdt, |
| 69 | u32 ms) |
| 70 | { |
| 71 | struct bcma_drv_cc *cc = bcm47xx_wdt_get_drvdata(wdt); |
| 72 | u32 ticks; |
| 73 | |
| 74 | ticks = bcma_chipco_watchdog_timer_set(cc, cc->ticks_per_ms * ms); |
| 75 | return ticks / cc->ticks_per_ms; |
| 76 | } |
| 77 | |
| 78 | static int bcma_chipco_watchdog_ticks_per_ms(struct bcma_drv_cc *cc) |
| 79 | { |
| 80 | struct bcma_bus *bus = cc->core->bus; |
| 81 | |
| 82 | if (cc->capabilities & BCMA_CC_CAP_PMU) { |
| 83 | if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4706) |
Oscar Forner Martinez | d0f66df | 2014-12-27 19:24:28 +0000 | [diff] [blame] | 84 | /* 4706 CC and PMU watchdogs are clocked at 1/4 of ALP |
| 85 | * clock |
| 86 | */ |
Rafał Miłecki | 5b5ac41 | 2012-12-07 12:56:56 +0100 | [diff] [blame] | 87 | return bcma_chipco_get_alp_clock(cc) / 4000; |
Hauke Mehrtens | a22a311 | 2012-12-05 18:46:01 +0100 | [diff] [blame] | 88 | else |
| 89 | /* based on 32KHz ILP clock */ |
| 90 | return 32; |
| 91 | } else { |
Rafał Miłecki | 5b5ac41 | 2012-12-07 12:56:56 +0100 | [diff] [blame] | 92 | return bcma_chipco_get_alp_clock(cc) / 1000; |
Hauke Mehrtens | a22a311 | 2012-12-05 18:46:01 +0100 | [diff] [blame] | 93 | } |
| 94 | } |
Hauke Mehrtens | f6354c8 | 2012-12-05 18:46:00 +0100 | [diff] [blame] | 95 | |
Hauke Mehrtens | a4855f39 | 2012-12-05 18:46:02 +0100 | [diff] [blame] | 96 | int bcma_chipco_watchdog_register(struct bcma_drv_cc *cc) |
| 97 | { |
| 98 | struct bcm47xx_wdt wdt = {}; |
| 99 | struct platform_device *pdev; |
| 100 | |
| 101 | wdt.driver_data = cc; |
| 102 | wdt.timer_set = bcma_chipco_watchdog_timer_set_wdt; |
| 103 | wdt.timer_set_ms = bcma_chipco_watchdog_timer_set_ms_wdt; |
Oscar Forner Martinez | d0f66df | 2014-12-27 19:24:28 +0000 | [diff] [blame] | 104 | wdt.max_timer_ms = |
| 105 | bcma_chipco_watchdog_get_max_timer(cc) / cc->ticks_per_ms; |
Hauke Mehrtens | a4855f39 | 2012-12-05 18:46:02 +0100 | [diff] [blame] | 106 | |
| 107 | pdev = platform_device_register_data(NULL, "bcm47xx-wdt", |
| 108 | cc->core->bus->num, &wdt, |
| 109 | sizeof(wdt)); |
| 110 | if (IS_ERR(pdev)) |
| 111 | return PTR_ERR(pdev); |
| 112 | |
| 113 | cc->watchdog = pdev; |
| 114 | |
| 115 | return 0; |
| 116 | } |
| 117 | |
Rafał Miłecki | 0ea6f0c | 2016-02-12 10:15:45 +0100 | [diff] [blame] | 118 | static void bcma_core_chipcommon_flash_detect(struct bcma_drv_cc *cc) |
| 119 | { |
| 120 | struct bcma_bus *bus = cc->core->bus; |
| 121 | |
| 122 | switch (cc->capabilities & BCMA_CC_CAP_FLASHT) { |
| 123 | case BCMA_CC_FLASHT_STSER: |
| 124 | case BCMA_CC_FLASHT_ATSER: |
| 125 | bcma_debug(bus, "Found serial flash\n"); |
| 126 | bcma_sflash_init(cc); |
| 127 | break; |
| 128 | case BCMA_CC_FLASHT_PARA: |
| 129 | bcma_debug(bus, "Found parallel flash\n"); |
| 130 | bcma_pflash_init(cc); |
| 131 | break; |
| 132 | default: |
| 133 | bcma_err(bus, "Flash type not supported\n"); |
| 134 | } |
| 135 | |
| 136 | if (cc->core->id.rev == 38 || |
| 137 | bus->chipinfo.id == BCMA_CHIP_ID_BCM4706) { |
| 138 | if (cc->capabilities & BCMA_CC_CAP_NFLASH) { |
| 139 | bcma_debug(bus, "Found NAND flash\n"); |
| 140 | bcma_nflash_init(cc); |
| 141 | } |
| 142 | } |
| 143 | } |
| 144 | |
Hauke Mehrtens | 49655bb | 2012-09-29 20:29:49 +0200 | [diff] [blame] | 145 | void bcma_core_chipcommon_early_init(struct bcma_drv_cc *cc) |
| 146 | { |
Rafał Miłecki | 4c81aca | 2016-01-22 18:02:54 +0100 | [diff] [blame] | 147 | struct bcma_bus *bus = cc->core->bus; |
| 148 | |
Hauke Mehrtens | 49655bb | 2012-09-29 20:29:49 +0200 | [diff] [blame] | 149 | if (cc->early_setup_done) |
| 150 | return; |
| 151 | |
Hauke Mehrtens | ef85fb2 | 2012-11-20 22:24:27 +0000 | [diff] [blame] | 152 | spin_lock_init(&cc->gpio_lock); |
| 153 | |
Hauke Mehrtens | 49655bb | 2012-09-29 20:29:49 +0200 | [diff] [blame] | 154 | if (cc->core->id.rev >= 11) |
| 155 | cc->status = bcma_cc_read32(cc, BCMA_CC_CHIPSTAT); |
| 156 | cc->capabilities = bcma_cc_read32(cc, BCMA_CC_CAP); |
| 157 | if (cc->core->id.rev >= 35) |
| 158 | cc->capabilities_ext = bcma_cc_read32(cc, BCMA_CC_CAP_EXT); |
| 159 | |
| 160 | if (cc->capabilities & BCMA_CC_CAP_PMU) |
| 161 | bcma_pmu_early_init(cc); |
| 162 | |
Rafał Miłecki | 4c81aca | 2016-01-22 18:02:54 +0100 | [diff] [blame] | 163 | if (IS_BUILTIN(CONFIG_BCM47XX) && bus->hosttype == BCMA_HOSTTYPE_SOC) |
| 164 | bcma_chipco_serial_init(cc); |
| 165 | |
Rafał Miłecki | 0ea6f0c | 2016-02-12 10:15:45 +0100 | [diff] [blame] | 166 | if (bus->hosttype == BCMA_HOSTTYPE_SOC) |
| 167 | bcma_core_chipcommon_flash_detect(cc); |
| 168 | |
Hauke Mehrtens | 49655bb | 2012-09-29 20:29:49 +0200 | [diff] [blame] | 169 | cc->early_setup_done = true; |
| 170 | } |
| 171 | |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 172 | void bcma_core_chipcommon_init(struct bcma_drv_cc *cc) |
| 173 | { |
Rafał Miłecki | 18dfa49 | 2011-07-14 21:49:19 +0200 | [diff] [blame] | 174 | u32 leddc_on = 10; |
| 175 | u32 leddc_off = 90; |
| 176 | |
Hauke Mehrtens | 517f43e | 2011-07-23 01:20:07 +0200 | [diff] [blame] | 177 | if (cc->setup_done) |
| 178 | return; |
| 179 | |
Hauke Mehrtens | 49655bb | 2012-09-29 20:29:49 +0200 | [diff] [blame] | 180 | bcma_core_chipcommon_early_init(cc); |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 181 | |
Rafał Miłecki | 1073e4e | 2011-05-11 02:08:09 +0200 | [diff] [blame] | 182 | if (cc->core->id.rev >= 20) { |
Rafał Miłecki | 88f9b65 | 2013-06-26 10:02:11 +0200 | [diff] [blame] | 183 | u32 pullup = 0, pulldown = 0; |
| 184 | |
| 185 | if (cc->core->bus->chipinfo.id == BCMA_CHIP_ID_BCM43142) { |
| 186 | pullup = 0x402e0; |
| 187 | pulldown = 0x20500; |
| 188 | } |
| 189 | |
| 190 | bcma_cc_write32(cc, BCMA_CC_GPIOPULLUP, pullup); |
| 191 | bcma_cc_write32(cc, BCMA_CC_GPIOPULLDOWN, pulldown); |
Rafał Miłecki | 1073e4e | 2011-05-11 02:08:09 +0200 | [diff] [blame] | 192 | } |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 193 | |
| 194 | if (cc->capabilities & BCMA_CC_CAP_PMU) |
| 195 | bcma_pmu_init(cc); |
| 196 | if (cc->capabilities & BCMA_CC_CAP_PCTL) |
Rafał Miłecki | 3d9d8af | 2012-07-05 22:07:32 +0200 | [diff] [blame] | 197 | bcma_err(cc->core->bus, "Power control not implemented!\n"); |
Rafał Miłecki | 18dfa49 | 2011-07-14 21:49:19 +0200 | [diff] [blame] | 198 | |
| 199 | if (cc->core->id.rev >= 16) { |
| 200 | if (cc->core->bus->sprom.leddc_on_time && |
| 201 | cc->core->bus->sprom.leddc_off_time) { |
| 202 | leddc_on = cc->core->bus->sprom.leddc_on_time; |
| 203 | leddc_off = cc->core->bus->sprom.leddc_off_time; |
| 204 | } |
| 205 | bcma_cc_write32(cc, BCMA_CC_GPIOTIMER, |
| 206 | ((leddc_on << BCMA_CC_GPIOTIMER_ONTIME_SHIFT) | |
| 207 | (leddc_off << BCMA_CC_GPIOTIMER_OFFTIME_SHIFT))); |
| 208 | } |
Hauke Mehrtens | a22a311 | 2012-12-05 18:46:01 +0100 | [diff] [blame] | 209 | cc->ticks_per_ms = bcma_chipco_watchdog_ticks_per_ms(cc); |
Hauke Mehrtens | 517f43e | 2011-07-23 01:20:07 +0200 | [diff] [blame] | 210 | |
| 211 | cc->setup_done = true; |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 212 | } |
| 213 | |
| 214 | /* Set chip watchdog reset timer to fire in 'ticks' backplane cycles */ |
Hauke Mehrtens | a22a311 | 2012-12-05 18:46:01 +0100 | [diff] [blame] | 215 | u32 bcma_chipco_watchdog_timer_set(struct bcma_drv_cc *cc, u32 ticks) |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 216 | { |
Hauke Mehrtens | f6354c8 | 2012-12-05 18:46:00 +0100 | [diff] [blame] | 217 | u32 maxt; |
Hauke Mehrtens | f6354c8 | 2012-12-05 18:46:00 +0100 | [diff] [blame] | 218 | |
| 219 | maxt = bcma_chipco_watchdog_get_max_timer(cc); |
| 220 | if (cc->capabilities & BCMA_CC_CAP_PMU) { |
| 221 | if (ticks == 1) |
| 222 | ticks = 2; |
| 223 | else if (ticks > maxt) |
| 224 | ticks = maxt; |
Rafał Miłecki | b3c47af | 2016-01-19 08:45:26 +0100 | [diff] [blame] | 225 | bcma_pmu_write32(cc, BCMA_CC_PMU_WATCHDOG, ticks); |
Hauke Mehrtens | f6354c8 | 2012-12-05 18:46:00 +0100 | [diff] [blame] | 226 | } else { |
Rafał Miłecki | 68fcd24 | 2015-01-24 00:23:21 +0100 | [diff] [blame] | 227 | struct bcma_bus *bus = cc->core->bus; |
| 228 | |
| 229 | if (bus->chipinfo.id != BCMA_CHIP_ID_BCM4707 && |
Rafał Miłecki | 61dba73 | 2016-01-24 16:37:33 +0100 | [diff] [blame] | 230 | bus->chipinfo.id != BCMA_CHIP_ID_BCM47094 && |
Rafał Miłecki | 68fcd24 | 2015-01-24 00:23:21 +0100 | [diff] [blame] | 231 | bus->chipinfo.id != BCMA_CHIP_ID_BCM53018) |
| 232 | bcma_core_set_clockmode(cc->core, |
| 233 | ticks ? BCMA_CLKMODE_FAST : BCMA_CLKMODE_DYNAMIC); |
| 234 | |
Hauke Mehrtens | f6354c8 | 2012-12-05 18:46:00 +0100 | [diff] [blame] | 235 | if (ticks > maxt) |
| 236 | ticks = maxt; |
| 237 | /* instant NMI */ |
| 238 | bcma_cc_write32(cc, BCMA_CC_WATCHDOG, ticks); |
| 239 | } |
Hauke Mehrtens | a22a311 | 2012-12-05 18:46:01 +0100 | [diff] [blame] | 240 | return ticks; |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 241 | } |
| 242 | |
| 243 | void bcma_chipco_irq_mask(struct bcma_drv_cc *cc, u32 mask, u32 value) |
| 244 | { |
| 245 | bcma_cc_write32_masked(cc, BCMA_CC_IRQMASK, mask, value); |
| 246 | } |
| 247 | |
| 248 | u32 bcma_chipco_irq_status(struct bcma_drv_cc *cc, u32 mask) |
| 249 | { |
| 250 | return bcma_cc_read32(cc, BCMA_CC_IRQSTAT) & mask; |
| 251 | } |
| 252 | |
| 253 | u32 bcma_chipco_gpio_in(struct bcma_drv_cc *cc, u32 mask) |
| 254 | { |
| 255 | return bcma_cc_read32(cc, BCMA_CC_GPIOIN) & mask; |
| 256 | } |
| 257 | |
| 258 | u32 bcma_chipco_gpio_out(struct bcma_drv_cc *cc, u32 mask, u32 value) |
| 259 | { |
Hauke Mehrtens | ef85fb2 | 2012-11-20 22:24:27 +0000 | [diff] [blame] | 260 | unsigned long flags; |
| 261 | u32 res; |
| 262 | |
| 263 | spin_lock_irqsave(&cc->gpio_lock, flags); |
| 264 | res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOOUT, mask, value); |
| 265 | spin_unlock_irqrestore(&cc->gpio_lock, flags); |
| 266 | |
| 267 | return res; |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 268 | } |
Hauke Mehrtens | ca84a6c | 2013-03-27 17:23:12 +0100 | [diff] [blame] | 269 | EXPORT_SYMBOL_GPL(bcma_chipco_gpio_out); |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 270 | |
| 271 | u32 bcma_chipco_gpio_outen(struct bcma_drv_cc *cc, u32 mask, u32 value) |
| 272 | { |
Hauke Mehrtens | ef85fb2 | 2012-11-20 22:24:27 +0000 | [diff] [blame] | 273 | unsigned long flags; |
| 274 | u32 res; |
| 275 | |
| 276 | spin_lock_irqsave(&cc->gpio_lock, flags); |
| 277 | res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOOUTEN, mask, value); |
| 278 | spin_unlock_irqrestore(&cc->gpio_lock, flags); |
| 279 | |
| 280 | return res; |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 281 | } |
Hauke Mehrtens | ca84a6c | 2013-03-27 17:23:12 +0100 | [diff] [blame] | 282 | EXPORT_SYMBOL_GPL(bcma_chipco_gpio_outen); |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 283 | |
Hauke Mehrtens | 3e8bb50 | 2012-11-20 22:24:29 +0000 | [diff] [blame] | 284 | /* |
| 285 | * If the bit is set to 0, chipcommon controlls this GPIO, |
| 286 | * if the bit is set to 1, it is used by some part of the chip and not our code. |
| 287 | */ |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 288 | u32 bcma_chipco_gpio_control(struct bcma_drv_cc *cc, u32 mask, u32 value) |
| 289 | { |
Hauke Mehrtens | ef85fb2 | 2012-11-20 22:24:27 +0000 | [diff] [blame] | 290 | unsigned long flags; |
| 291 | u32 res; |
| 292 | |
| 293 | spin_lock_irqsave(&cc->gpio_lock, flags); |
| 294 | res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOCTL, mask, value); |
| 295 | spin_unlock_irqrestore(&cc->gpio_lock, flags); |
| 296 | |
| 297 | return res; |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 298 | } |
| 299 | EXPORT_SYMBOL_GPL(bcma_chipco_gpio_control); |
| 300 | |
| 301 | u32 bcma_chipco_gpio_intmask(struct bcma_drv_cc *cc, u32 mask, u32 value) |
| 302 | { |
Hauke Mehrtens | ef85fb2 | 2012-11-20 22:24:27 +0000 | [diff] [blame] | 303 | unsigned long flags; |
| 304 | u32 res; |
| 305 | |
| 306 | spin_lock_irqsave(&cc->gpio_lock, flags); |
| 307 | res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOIRQ, mask, value); |
| 308 | spin_unlock_irqrestore(&cc->gpio_lock, flags); |
| 309 | |
| 310 | return res; |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 311 | } |
| 312 | |
| 313 | u32 bcma_chipco_gpio_polarity(struct bcma_drv_cc *cc, u32 mask, u32 value) |
| 314 | { |
Hauke Mehrtens | ef85fb2 | 2012-11-20 22:24:27 +0000 | [diff] [blame] | 315 | unsigned long flags; |
| 316 | u32 res; |
| 317 | |
| 318 | spin_lock_irqsave(&cc->gpio_lock, flags); |
| 319 | res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOPOL, mask, value); |
| 320 | spin_unlock_irqrestore(&cc->gpio_lock, flags); |
| 321 | |
| 322 | return res; |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 323 | } |
Hauke Mehrtens | e3afe0e | 2011-07-23 01:20:10 +0200 | [diff] [blame] | 324 | |
Hauke Mehrtens | ea3488f | 2012-11-20 22:24:28 +0000 | [diff] [blame] | 325 | u32 bcma_chipco_gpio_pullup(struct bcma_drv_cc *cc, u32 mask, u32 value) |
| 326 | { |
| 327 | unsigned long flags; |
| 328 | u32 res; |
| 329 | |
| 330 | if (cc->core->id.rev < 20) |
| 331 | return 0; |
| 332 | |
| 333 | spin_lock_irqsave(&cc->gpio_lock, flags); |
| 334 | res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOPULLUP, mask, value); |
| 335 | spin_unlock_irqrestore(&cc->gpio_lock, flags); |
| 336 | |
| 337 | return res; |
| 338 | } |
| 339 | |
| 340 | u32 bcma_chipco_gpio_pulldown(struct bcma_drv_cc *cc, u32 mask, u32 value) |
| 341 | { |
| 342 | unsigned long flags; |
| 343 | u32 res; |
| 344 | |
| 345 | if (cc->core->id.rev < 20) |
| 346 | return 0; |
| 347 | |
| 348 | spin_lock_irqsave(&cc->gpio_lock, flags); |
| 349 | res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOPULLDOWN, mask, value); |
| 350 | spin_unlock_irqrestore(&cc->gpio_lock, flags); |
| 351 | |
| 352 | return res; |
Rafał Miłecki | 8369ae3 | 2011-05-09 18:56:46 +0200 | [diff] [blame] | 353 | } |
Hauke Mehrtens | e3afe0e | 2011-07-23 01:20:10 +0200 | [diff] [blame] | 354 | |
Rafał Miłecki | 4c81aca | 2016-01-22 18:02:54 +0100 | [diff] [blame] | 355 | static void bcma_chipco_serial_init(struct bcma_drv_cc *cc) |
Hauke Mehrtens | e3afe0e | 2011-07-23 01:20:10 +0200 | [diff] [blame] | 356 | { |
Rafał Miłecki | 4c81aca | 2016-01-22 18:02:54 +0100 | [diff] [blame] | 357 | #if IS_BUILTIN(CONFIG_BCM47XX) |
Hauke Mehrtens | e3afe0e | 2011-07-23 01:20:10 +0200 | [diff] [blame] | 358 | unsigned int irq; |
| 359 | u32 baud_base; |
| 360 | u32 i; |
| 361 | unsigned int ccrev = cc->core->id.rev; |
| 362 | struct bcma_serial_port *ports = cc->serial_ports; |
| 363 | |
| 364 | if (ccrev >= 11 && ccrev != 15) { |
Rafał Miłecki | 5b5ac41 | 2012-12-07 12:56:56 +0100 | [diff] [blame] | 365 | baud_base = bcma_chipco_get_alp_clock(cc); |
Hauke Mehrtens | e3afe0e | 2011-07-23 01:20:10 +0200 | [diff] [blame] | 366 | if (ccrev >= 21) { |
| 367 | /* Turn off UART clock before switching clocksource. */ |
| 368 | bcma_cc_write32(cc, BCMA_CC_CORECTL, |
| 369 | bcma_cc_read32(cc, BCMA_CC_CORECTL) |
| 370 | & ~BCMA_CC_CORECTL_UARTCLKEN); |
| 371 | } |
| 372 | /* Set the override bit so we don't divide it */ |
| 373 | bcma_cc_write32(cc, BCMA_CC_CORECTL, |
| 374 | bcma_cc_read32(cc, BCMA_CC_CORECTL) |
| 375 | | BCMA_CC_CORECTL_UARTCLK0); |
| 376 | if (ccrev >= 21) { |
| 377 | /* Re-enable the UART clock. */ |
| 378 | bcma_cc_write32(cc, BCMA_CC_CORECTL, |
| 379 | bcma_cc_read32(cc, BCMA_CC_CORECTL) |
| 380 | | BCMA_CC_CORECTL_UARTCLKEN); |
| 381 | } |
| 382 | } else { |
Oscar Forner Martinez | d0f66df | 2014-12-27 19:24:28 +0000 | [diff] [blame] | 383 | bcma_err(cc->core->bus, "serial not supported on this device ccrev: 0x%x\n", |
| 384 | ccrev); |
Hauke Mehrtens | e3afe0e | 2011-07-23 01:20:10 +0200 | [diff] [blame] | 385 | return; |
| 386 | } |
| 387 | |
Hauke Mehrtens | 85eb92e | 2014-11-01 16:54:55 +0100 | [diff] [blame] | 388 | irq = bcma_core_irq(cc->core, 0); |
Hauke Mehrtens | e3afe0e | 2011-07-23 01:20:10 +0200 | [diff] [blame] | 389 | |
| 390 | /* Determine the registers of the UARTs */ |
| 391 | cc->nr_serial_ports = (cc->capabilities & BCMA_CC_CAP_NRUART); |
| 392 | for (i = 0; i < cc->nr_serial_ports; i++) { |
| 393 | ports[i].regs = cc->core->io_addr + BCMA_CC_UART0_DATA + |
| 394 | (i * 256); |
| 395 | ports[i].irq = irq; |
| 396 | ports[i].baud_base = baud_base; |
| 397 | ports[i].reg_shift = 0; |
| 398 | } |
Rafał Miłecki | 4c81aca | 2016-01-22 18:02:54 +0100 | [diff] [blame] | 399 | #endif /* CONFIG_BCM47XX */ |
Hauke Mehrtens | e3afe0e | 2011-07-23 01:20:10 +0200 | [diff] [blame] | 400 | } |