Matthew Qin | 3aa8705 | 2014-02-21 10:32:34 +0800 | [diff] [blame] | 1 | /* Copyright (c) 2012-2014, The Linux Foundation. All rights reserved. |
Deepa Dinamani | 2279965 | 2012-07-21 12:26:22 -0700 | [diff] [blame] | 2 | |
| 3 | * Redistribution and use in source and binary forms, with or without |
| 4 | * modification, are permitted provided that the following conditions are |
| 5 | * met: |
| 6 | * * Redistributions of source code must retain the above copyright |
| 7 | * notice, this list of conditions and the following disclaimer. |
| 8 | * * Redistributions in binary form must reproduce the above |
| 9 | * copyright notice, this list of conditions and the following |
| 10 | * disclaimer in the documentation and/or other materials provided |
| 11 | * with the distribution. |
Channagoud Kadabi | 0e60b7d | 2012-11-01 22:56:08 +0530 | [diff] [blame] | 12 | * * Neither the name of The Linux Foundation, Inc. nor the names of its |
Deepa Dinamani | 2279965 | 2012-07-21 12:26:22 -0700 | [diff] [blame] | 13 | * contributors may be used to endorse or promote products derived |
| 14 | * from this software without specific prior written permission. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED |
| 17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 18 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT |
| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS |
| 20 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 23 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| 25 | * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| 26 | * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
| 28 | |
Deepa Dinamani | 9a61293 | 2012-08-14 16:15:03 -0700 | [diff] [blame] | 29 | #include <bits.h> |
Deepa Dinamani | 2279965 | 2012-07-21 12:26:22 -0700 | [diff] [blame] | 30 | #include <debug.h> |
| 31 | #include <reg.h> |
| 32 | #include <spmi.h> |
Channagoud Kadabi | 0e60b7d | 2012-11-01 22:56:08 +0530 | [diff] [blame] | 33 | #include <string.h> |
Deepa Dinamani | 2279965 | 2012-07-21 12:26:22 -0700 | [diff] [blame] | 34 | #include <pm8x41_hw.h> |
Deepa Dinamani | 9a61293 | 2012-08-14 16:15:03 -0700 | [diff] [blame] | 35 | #include <pm8x41.h> |
Channagoud Kadabi | 9089da6 | 2014-11-10 13:19:55 -0800 | [diff] [blame^] | 36 | #include <rpm-smd.h> |
| 37 | #include <regulator.h> |
Deepa Dinamani | 9a61293 | 2012-08-14 16:15:03 -0700 | [diff] [blame] | 38 | #include <platform/timer.h> |
Deepa Dinamani | 2279965 | 2012-07-21 12:26:22 -0700 | [diff] [blame] | 39 | |
Channagoud Kadabi | 9089da6 | 2014-11-10 13:19:55 -0800 | [diff] [blame^] | 40 | /* Enable LN BB CLK */ |
| 41 | static uint32_t ln_bb_clk[][8] = { |
| 42 | { |
| 43 | RPM_CLK_BUFFER_A_REQ, LNBB_CLK_ID, |
| 44 | KEY_SOFTWARE_ENABLE, 4, GENERIC_DISABLE, |
| 45 | RPM_KEY_PIN_CTRL_CLK_BUFFER_ENABLE_KEY, 4, RPM_CLK_BUFFER_PIN_CONTROL_ENABLE_NONE, |
| 46 | }, |
| 47 | { |
| 48 | RPM_CLK_BUFFER_A_REQ, LNBB_CLK_ID, |
| 49 | KEY_SOFTWARE_ENABLE, 4, GENERIC_ENABLE, |
| 50 | RPM_KEY_PIN_CTRL_CLK_BUFFER_ENABLE_KEY, 4, RPM_CLK_BUFFER_PIN_CONTROL_ENABLE_NONE, |
| 51 | }, |
| 52 | }; |
| 53 | |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 54 | static uint8_t mpp_slave_id; |
| 55 | |
| 56 | uint8_t pmi8994_config_mpp_slave_id(uint8_t slave_id) |
| 57 | { |
| 58 | mpp_slave_id = slave_id; |
| 59 | } |
| 60 | |
Channagoud Kadabi | d091f70 | 2013-01-07 16:17:37 -0800 | [diff] [blame] | 61 | /* SPMI helper functions */ |
| 62 | uint8_t pm8x41_reg_read(uint32_t addr) |
Deepa Dinamani | 9a61293 | 2012-08-14 16:15:03 -0700 | [diff] [blame] | 63 | { |
| 64 | uint8_t val = 0; |
| 65 | struct pmic_arb_cmd cmd; |
| 66 | struct pmic_arb_param param; |
| 67 | |
| 68 | cmd.address = PERIPH_ID(addr); |
| 69 | cmd.offset = REG_OFFSET(addr); |
| 70 | cmd.slave_id = SLAVE_ID(addr); |
| 71 | cmd.priority = 0; |
| 72 | |
| 73 | param.buffer = &val; |
| 74 | param.size = 1; |
| 75 | |
| 76 | pmic_arb_read_cmd(&cmd, ¶m); |
| 77 | |
| 78 | return val; |
| 79 | } |
| 80 | |
Channagoud Kadabi | d091f70 | 2013-01-07 16:17:37 -0800 | [diff] [blame] | 81 | void pm8x41_reg_write(uint32_t addr, uint8_t val) |
Deepa Dinamani | 2279965 | 2012-07-21 12:26:22 -0700 | [diff] [blame] | 82 | { |
| 83 | struct pmic_arb_cmd cmd; |
| 84 | struct pmic_arb_param param; |
Deepa Dinamani | 2279965 | 2012-07-21 12:26:22 -0700 | [diff] [blame] | 85 | |
Deepa Dinamani | 9a61293 | 2012-08-14 16:15:03 -0700 | [diff] [blame] | 86 | cmd.address = PERIPH_ID(addr); |
| 87 | cmd.offset = REG_OFFSET(addr); |
| 88 | cmd.slave_id = SLAVE_ID(addr); |
Deepa Dinamani | 2279965 | 2012-07-21 12:26:22 -0700 | [diff] [blame] | 89 | cmd.priority = 0; |
Deepa Dinamani | 2279965 | 2012-07-21 12:26:22 -0700 | [diff] [blame] | 90 | |
Deepa Dinamani | 9a61293 | 2012-08-14 16:15:03 -0700 | [diff] [blame] | 91 | param.buffer = &val; |
| 92 | param.size = 1; |
Deepa Dinamani | 2279965 | 2012-07-21 12:26:22 -0700 | [diff] [blame] | 93 | |
Deepa Dinamani | 9a61293 | 2012-08-14 16:15:03 -0700 | [diff] [blame] | 94 | pmic_arb_write_cmd(&cmd, ¶m); |
| 95 | } |
Deepa Dinamani | 2279965 | 2012-07-21 12:26:22 -0700 | [diff] [blame] | 96 | |
Deepa Dinamani | 9a61293 | 2012-08-14 16:15:03 -0700 | [diff] [blame] | 97 | /* Exported functions */ |
| 98 | |
| 99 | /* Set the boot done flag */ |
| 100 | void pm8x41_set_boot_done() |
| 101 | { |
| 102 | uint8_t val; |
| 103 | |
| 104 | val = REG_READ(SMBB_MISC_BOOT_DONE); |
| 105 | val |= BIT(BOOT_DONE_BIT); |
| 106 | REG_WRITE(SMBB_MISC_BOOT_DONE, val); |
| 107 | } |
| 108 | |
| 109 | /* Configure GPIO */ |
| 110 | int pm8x41_gpio_config(uint8_t gpio, struct pm8x41_gpio *config) |
| 111 | { |
| 112 | uint8_t val; |
| 113 | uint32_t gpio_base = GPIO_N_PERIPHERAL_BASE(gpio); |
| 114 | |
| 115 | /* Disable the GPIO */ |
| 116 | val = REG_READ(gpio_base + GPIO_EN_CTL); |
| 117 | val &= ~BIT(PERPH_EN_BIT); |
| 118 | REG_WRITE(gpio_base + GPIO_EN_CTL, val); |
| 119 | |
| 120 | /* Select the mode */ |
| 121 | val = config->function | (config->direction << 4); |
| 122 | REG_WRITE(gpio_base + GPIO_MODE_CTL, val); |
| 123 | |
| 124 | /* Set the right pull */ |
| 125 | val = config->pull; |
| 126 | REG_WRITE(gpio_base + GPIO_DIG_PULL_CTL, val); |
| 127 | |
| 128 | /* Select the VIN */ |
| 129 | val = config->vin_sel; |
| 130 | REG_WRITE(gpio_base + GPIO_DIG_VIN_CTL, val); |
| 131 | |
Siddhartha Agrawal | d61f81e | 2012-12-17 19:20:35 -0800 | [diff] [blame] | 132 | if (config->direction == PM_GPIO_DIR_OUT) { |
| 133 | /* Set the right dig out control */ |
| 134 | val = config->out_strength | (config->output_buffer << 4); |
| 135 | REG_WRITE(gpio_base + GPIO_DIG_OUT_CTL, val); |
| 136 | } |
| 137 | |
Deepa Dinamani | 9a61293 | 2012-08-14 16:15:03 -0700 | [diff] [blame] | 138 | /* Enable the GPIO */ |
| 139 | val = REG_READ(gpio_base + GPIO_EN_CTL); |
| 140 | val |= BIT(PERPH_EN_BIT); |
| 141 | REG_WRITE(gpio_base + GPIO_EN_CTL, val); |
| 142 | |
Siddhartha Agrawal | d61f81e | 2012-12-17 19:20:35 -0800 | [diff] [blame] | 143 | return 0; |
Deepa Dinamani | 9a61293 | 2012-08-14 16:15:03 -0700 | [diff] [blame] | 144 | } |
| 145 | |
| 146 | /* Reads the status of requested gpio */ |
| 147 | int pm8x41_gpio_get(uint8_t gpio, uint8_t *status) |
| 148 | { |
| 149 | uint32_t gpio_base = GPIO_N_PERIPHERAL_BASE(gpio); |
| 150 | |
| 151 | *status = REG_READ(gpio_base + GPIO_STATUS); |
| 152 | |
| 153 | /* Return the value of the GPIO pin */ |
| 154 | *status &= BIT(GPIO_STATUS_VAL_BIT); |
| 155 | |
| 156 | dprintf(SPEW, "GPIO %d status is %d\n", gpio, *status); |
| 157 | |
Siddhartha Agrawal | d61f81e | 2012-12-17 19:20:35 -0800 | [diff] [blame] | 158 | return 0; |
| 159 | } |
| 160 | |
| 161 | /* Write the output value of the requested gpio */ |
| 162 | int pm8x41_gpio_set(uint8_t gpio, uint8_t value) |
| 163 | { |
| 164 | uint32_t gpio_base = GPIO_N_PERIPHERAL_BASE(gpio); |
| 165 | uint8_t val; |
| 166 | |
| 167 | /* Set the output value of the gpio */ |
| 168 | val = REG_READ(gpio_base + GPIO_MODE_CTL); |
| 169 | val = (val & ~PM_GPIO_OUTPUT_MASK) | value; |
| 170 | REG_WRITE(gpio_base + GPIO_MODE_CTL, val); |
| 171 | |
| 172 | return 0; |
Deepa Dinamani | 9a61293 | 2012-08-14 16:15:03 -0700 | [diff] [blame] | 173 | } |
| 174 | |
Kuogee Hsieh | 383a5ae | 2014-09-02 16:31:39 -0700 | [diff] [blame] | 175 | /* Configure PM and PMI GPIO with slave id */ |
| 176 | int pm8x41_gpio_config_sid(uint8_t sid, uint8_t gpio, struct pm8x41_gpio *config) |
| 177 | { |
| 178 | uint8_t val; |
| 179 | uint32_t gpio_base = GPIO_N_PERIPHERAL_BASE(gpio); |
| 180 | |
| 181 | gpio_base &= 0x0ffff; /* clear sid */ |
| 182 | gpio_base |= (sid << 16); /* add sid */ |
| 183 | |
| 184 | dprintf(SPEW, "%s: gpio=%d base=%x\n", __func__, gpio, gpio_base); |
| 185 | |
| 186 | /* Disable the GPIO */ |
| 187 | val = REG_READ(gpio_base + GPIO_EN_CTL); |
| 188 | val &= ~BIT(PERPH_EN_BIT); |
| 189 | REG_WRITE(gpio_base + GPIO_EN_CTL, val); |
| 190 | |
| 191 | /* Select the mode */ |
| 192 | val = config->function | (config->direction << 4); |
| 193 | REG_WRITE(gpio_base + GPIO_MODE_CTL, val); |
| 194 | |
| 195 | /* Set the right pull */ |
| 196 | val = config->pull; |
| 197 | REG_WRITE(gpio_base + GPIO_DIG_PULL_CTL, val); |
| 198 | |
| 199 | /* Select the VIN */ |
| 200 | val = config->vin_sel; |
| 201 | REG_WRITE(gpio_base + GPIO_DIG_VIN_CTL, val); |
| 202 | |
| 203 | if (config->direction == PM_GPIO_DIR_OUT) { |
| 204 | /* Set the right dig out control */ |
| 205 | val = config->out_strength | (config->output_buffer << 4); |
| 206 | REG_WRITE(gpio_base + GPIO_DIG_OUT_CTL, val); |
| 207 | } |
| 208 | |
| 209 | /* Enable the GPIO */ |
| 210 | val = REG_READ(gpio_base + GPIO_EN_CTL); |
| 211 | val |= BIT(PERPH_EN_BIT); |
| 212 | REG_WRITE(gpio_base + GPIO_EN_CTL, val); |
| 213 | |
| 214 | return 0; |
| 215 | } |
| 216 | |
| 217 | /* Reads the status of requested gpio */ |
| 218 | int pm8x41_gpio_get_sid(uint8_t sid, uint8_t gpio, uint8_t *status) |
| 219 | { |
| 220 | uint32_t gpio_base = GPIO_N_PERIPHERAL_BASE(gpio); |
| 221 | |
| 222 | gpio_base &= 0x0ffff; /* clear sid */ |
| 223 | gpio_base |= (sid << 16); /* add sid */ |
| 224 | |
| 225 | *status = REG_READ(gpio_base + GPIO_STATUS); |
| 226 | |
| 227 | /* Return the value of the GPIO pin */ |
| 228 | *status &= BIT(GPIO_STATUS_VAL_BIT); |
| 229 | |
| 230 | dprintf(SPEW, "GPIO %d status is %d\n", gpio, *status); |
| 231 | |
| 232 | return 0; |
| 233 | } |
| 234 | |
| 235 | /* Write the output value of the requested gpio */ |
| 236 | int pm8x41_gpio_set_sid(uint8_t sid, uint8_t gpio, uint8_t value) |
| 237 | { |
| 238 | uint32_t gpio_base = GPIO_N_PERIPHERAL_BASE(gpio); |
| 239 | uint8_t val; |
| 240 | |
| 241 | gpio_base &= 0x0ffff; /* clear sid */ |
| 242 | gpio_base |= (sid << 16); /* add sid */ |
| 243 | |
| 244 | dprintf(SPEW, "%s: gpio=%d base=%x\n", __func__, gpio, gpio_base); |
| 245 | |
| 246 | /* Set the output value of the gpio */ |
| 247 | val = REG_READ(gpio_base + GPIO_MODE_CTL); |
| 248 | val = (val & ~PM_GPIO_OUTPUT_MASK) | value; |
| 249 | REG_WRITE(gpio_base + GPIO_MODE_CTL, val); |
| 250 | |
| 251 | return 0; |
| 252 | } |
| 253 | |
Deepa Dinamani | c7f8758 | 2013-02-01 15:24:49 -0800 | [diff] [blame] | 254 | /* Prepare PON RESIN S2 reset (bite) */ |
| 255 | void pm8x41_resin_s2_reset_enable() |
Deepa Dinamani | 9a61293 | 2012-08-14 16:15:03 -0700 | [diff] [blame] | 256 | { |
| 257 | uint8_t val; |
| 258 | |
| 259 | /* disable s2 reset */ |
| 260 | REG_WRITE(PON_RESIN_N_RESET_S2_CTL, 0x0); |
| 261 | |
Amol Jadi | 7ec52b4 | 2012-08-16 14:12:45 -0700 | [diff] [blame] | 262 | /* Delay needed for disable to kick in. */ |
| 263 | udelay(300); |
| 264 | |
Deepa Dinamani | 9a61293 | 2012-08-14 16:15:03 -0700 | [diff] [blame] | 265 | /* configure s1 timer to 0 */ |
| 266 | REG_WRITE(PON_RESIN_N_RESET_S1_TIMER, 0x0); |
| 267 | |
| 268 | /* configure s2 timer to 2s */ |
| 269 | REG_WRITE(PON_RESIN_N_RESET_S2_TIMER, PON_RESIN_N_RESET_S2_TIMER_MAX_VALUE); |
| 270 | |
| 271 | /* configure reset type */ |
| 272 | REG_WRITE(PON_RESIN_N_RESET_S2_CTL, S2_RESET_TYPE_WARM); |
| 273 | |
| 274 | val = REG_READ(PON_RESIN_N_RESET_S2_CTL); |
| 275 | |
| 276 | /* enable s2 reset */ |
| 277 | val |= BIT(S2_RESET_EN_BIT); |
| 278 | REG_WRITE(PON_RESIN_N_RESET_S2_CTL, val); |
| 279 | } |
| 280 | |
Deepa Dinamani | c7f8758 | 2013-02-01 15:24:49 -0800 | [diff] [blame] | 281 | /* Disable PON RESIN S2 reset. (bite)*/ |
| 282 | void pm8x41_resin_s2_reset_disable() |
Deepa Dinamani | 9a61293 | 2012-08-14 16:15:03 -0700 | [diff] [blame] | 283 | { |
| 284 | /* disable s2 reset */ |
| 285 | REG_WRITE(PON_RESIN_N_RESET_S2_CTL, 0x0); |
Amol Jadi | 7ec52b4 | 2012-08-16 14:12:45 -0700 | [diff] [blame] | 286 | |
| 287 | /* Delay needed for disable to kick in. */ |
| 288 | udelay(300); |
Deepa Dinamani | 9a61293 | 2012-08-14 16:15:03 -0700 | [diff] [blame] | 289 | } |
| 290 | |
Deepa Dinamani | c7f8758 | 2013-02-01 15:24:49 -0800 | [diff] [blame] | 291 | /* Resin irq status for faulty pmic*/ |
Channagoud Kadabi | 36c19ea | 2013-07-05 16:28:44 -0700 | [diff] [blame] | 292 | uint32_t pm8x41_v2_resin_status() |
Deepa Dinamani | 9a61293 | 2012-08-14 16:15:03 -0700 | [diff] [blame] | 293 | { |
| 294 | uint8_t rt_sts = 0; |
| 295 | |
| 296 | /* Enable S2 reset so we can detect the volume down key press */ |
Deepa Dinamani | c7f8758 | 2013-02-01 15:24:49 -0800 | [diff] [blame] | 297 | pm8x41_resin_s2_reset_enable(); |
Deepa Dinamani | 9a61293 | 2012-08-14 16:15:03 -0700 | [diff] [blame] | 298 | |
| 299 | /* Delay before interrupt triggering. |
| 300 | * See PON_DEBOUNCE_CTL reg. |
| 301 | */ |
| 302 | mdelay(100); |
| 303 | |
| 304 | rt_sts = REG_READ(PON_INT_RT_STS); |
| 305 | |
| 306 | /* Must disable S2 reset otherwise PMIC will reset if key |
| 307 | * is held longer than S2 timer. |
| 308 | */ |
Deepa Dinamani | c7f8758 | 2013-02-01 15:24:49 -0800 | [diff] [blame] | 309 | pm8x41_resin_s2_reset_disable(); |
Deepa Dinamani | 9a61293 | 2012-08-14 16:15:03 -0700 | [diff] [blame] | 310 | |
| 311 | return (rt_sts & BIT(RESIN_BARK_INT_BIT)); |
Deepa Dinamani | 2279965 | 2012-07-21 12:26:22 -0700 | [diff] [blame] | 312 | } |
Neeti Desai | 120b55d | 2012-08-20 17:15:56 -0700 | [diff] [blame] | 313 | |
Deepa Dinamani | c7f8758 | 2013-02-01 15:24:49 -0800 | [diff] [blame] | 314 | /* Resin pin status */ |
| 315 | uint32_t pm8x41_resin_status() |
| 316 | { |
| 317 | uint8_t rt_sts = 0; |
| 318 | |
| 319 | rt_sts = REG_READ(PON_INT_RT_STS); |
| 320 | |
| 321 | return (rt_sts & BIT(RESIN_ON_INT_BIT)); |
| 322 | } |
| 323 | |
Matthew Qin | 3aa8705 | 2014-02-21 10:32:34 +0800 | [diff] [blame] | 324 | /* Return 1 if power key is pressed */ |
| 325 | uint32_t pm8x41_get_pwrkey_is_pressed() |
| 326 | { |
| 327 | uint8_t pwr_sts = 0; |
| 328 | |
| 329 | pwr_sts = REG_READ(PON_INT_RT_STS); |
| 330 | |
| 331 | if (pwr_sts & BIT(KPDPWR_ON_INT_BIT)) |
| 332 | return 1; |
| 333 | else |
| 334 | return 0; |
| 335 | } |
| 336 | |
Deepa Dinamani | 3c9865d | 2013-03-08 14:03:19 -0800 | [diff] [blame] | 337 | void pm8x41_v2_reset_configure(uint8_t reset_type) |
Neeti Desai | 120b55d | 2012-08-20 17:15:56 -0700 | [diff] [blame] | 338 | { |
| 339 | uint8_t val; |
| 340 | |
| 341 | /* disable PS_HOLD_RESET */ |
| 342 | REG_WRITE(PON_PS_HOLD_RESET_CTL, 0x0); |
| 343 | |
| 344 | /* Delay needed for disable to kick in. */ |
| 345 | udelay(300); |
| 346 | |
| 347 | /* configure reset type */ |
| 348 | REG_WRITE(PON_PS_HOLD_RESET_CTL, reset_type); |
| 349 | |
| 350 | val = REG_READ(PON_PS_HOLD_RESET_CTL); |
| 351 | |
| 352 | /* enable PS_HOLD_RESET */ |
| 353 | val |= BIT(S2_RESET_EN_BIT); |
| 354 | REG_WRITE(PON_PS_HOLD_RESET_CTL, val); |
| 355 | } |
Channagoud Kadabi | 0e60b7d | 2012-11-01 22:56:08 +0530 | [diff] [blame] | 356 | |
Deepa Dinamani | 3c9865d | 2013-03-08 14:03:19 -0800 | [diff] [blame] | 357 | void pm8x41_reset_configure(uint8_t reset_type) |
| 358 | { |
| 359 | /* disable PS_HOLD_RESET */ |
| 360 | REG_WRITE(PON_PS_HOLD_RESET_CTL2, 0x0); |
| 361 | |
| 362 | /* Delay needed for disable to kick in. */ |
| 363 | udelay(300); |
| 364 | |
| 365 | /* configure reset type */ |
| 366 | REG_WRITE(PON_PS_HOLD_RESET_CTL, reset_type); |
| 367 | |
| 368 | /* enable PS_HOLD_RESET */ |
| 369 | REG_WRITE(PON_PS_HOLD_RESET_CTL2, BIT(S2_RESET_EN_BIT)); |
| 370 | } |
| 371 | |
Channagoud Kadabi | 0e60b7d | 2012-11-01 22:56:08 +0530 | [diff] [blame] | 372 | /* |
| 373 | * LDO set voltage, takes ldo name & voltage in UV as input |
| 374 | */ |
Deepa Dinamani | e69ba61 | 2013-06-03 16:10:09 -0700 | [diff] [blame] | 375 | int pm8x41_ldo_set_voltage(struct pm8x41_ldo *ldo, uint32_t voltage) |
Channagoud Kadabi | 0e60b7d | 2012-11-01 22:56:08 +0530 | [diff] [blame] | 376 | { |
| 377 | uint32_t range = 0; |
| 378 | uint32_t step = 0; |
| 379 | uint32_t mult = 0; |
| 380 | uint32_t val = 0; |
| 381 | uint32_t vmin = 0; |
Channagoud Kadabi | 0e60b7d | 2012-11-01 22:56:08 +0530 | [diff] [blame] | 382 | |
Deepa Dinamani | e69ba61 | 2013-06-03 16:10:09 -0700 | [diff] [blame] | 383 | if (!ldo) |
| 384 | { |
| 385 | dprintf(CRITICAL, "LDO pointer is invalid: %p\n", ldo); |
Channagoud Kadabi | 0e60b7d | 2012-11-01 22:56:08 +0530 | [diff] [blame] | 386 | return 1; |
| 387 | } |
| 388 | |
| 389 | /* Program Normal power mode */ |
| 390 | val = 0x0; |
| 391 | val = (1 << LDO_NORMAL_PWR_BIT); |
| 392 | REG_WRITE((ldo->base + LDO_POWER_MODE), val); |
| 393 | |
| 394 | /* |
| 395 | * Select range, step & vmin based on input voltage & type of LDO |
| 396 | * LDO can operate in low, mid, high power mode |
| 397 | */ |
Deepa Dinamani | e69ba61 | 2013-06-03 16:10:09 -0700 | [diff] [blame] | 398 | if (ldo->type == PLDO_TYPE) |
| 399 | { |
| 400 | if (voltage < PLDO_UV_MIN) |
| 401 | { |
Channagoud Kadabi | 0e60b7d | 2012-11-01 22:56:08 +0530 | [diff] [blame] | 402 | range = 2; |
| 403 | step = PLDO_UV_STEP_LOW; |
| 404 | vmin = PLDO_UV_VMIN_LOW; |
Deepa Dinamani | e69ba61 | 2013-06-03 16:10:09 -0700 | [diff] [blame] | 405 | } |
| 406 | else if (voltage < PDLO_UV_MID) |
| 407 | { |
Channagoud Kadabi | 0e60b7d | 2012-11-01 22:56:08 +0530 | [diff] [blame] | 408 | range = 3; |
| 409 | step = PLDO_UV_STEP_MID; |
| 410 | vmin = PLDO_UV_VMIN_MID; |
Deepa Dinamani | e69ba61 | 2013-06-03 16:10:09 -0700 | [diff] [blame] | 411 | } |
| 412 | else |
| 413 | { |
Channagoud Kadabi | 0e60b7d | 2012-11-01 22:56:08 +0530 | [diff] [blame] | 414 | range = 4; |
| 415 | step = PLDO_UV_STEP_HIGH; |
| 416 | vmin = PLDO_UV_VMIN_HIGH; |
| 417 | } |
Deepa Dinamani | e69ba61 | 2013-06-03 16:10:09 -0700 | [diff] [blame] | 418 | } |
| 419 | else |
| 420 | { |
Channagoud Kadabi | 0e60b7d | 2012-11-01 22:56:08 +0530 | [diff] [blame] | 421 | range = 2; |
| 422 | step = NLDO_UV_STEP; |
| 423 | vmin = NLDO_UV_VMIN_LOW; |
| 424 | } |
| 425 | |
| 426 | mult = (voltage - vmin) / step; |
| 427 | |
| 428 | /* Set Range in voltage ctrl register */ |
| 429 | val = 0x0; |
| 430 | val = range << LDO_RANGE_SEL_BIT; |
Deepa Dinamani | e69ba61 | 2013-06-03 16:10:09 -0700 | [diff] [blame] | 431 | REG_WRITE((ldo->base + LDO_RANGE_CTRL), val); |
Channagoud Kadabi | 0e60b7d | 2012-11-01 22:56:08 +0530 | [diff] [blame] | 432 | |
| 433 | /* Set multiplier in voltage ctrl register */ |
| 434 | val = 0x0; |
| 435 | val = mult << LDO_VSET_SEL_BIT; |
Deepa Dinamani | e69ba61 | 2013-06-03 16:10:09 -0700 | [diff] [blame] | 436 | REG_WRITE((ldo->base + LDO_STEP_CTRL), val); |
Channagoud Kadabi | 0e60b7d | 2012-11-01 22:56:08 +0530 | [diff] [blame] | 437 | |
| 438 | return 0; |
| 439 | } |
| 440 | |
| 441 | /* |
| 442 | * Enable or Disable LDO |
| 443 | */ |
Deepa Dinamani | e69ba61 | 2013-06-03 16:10:09 -0700 | [diff] [blame] | 444 | int pm8x41_ldo_control(struct pm8x41_ldo *ldo, uint8_t enable) |
Channagoud Kadabi | 0e60b7d | 2012-11-01 22:56:08 +0530 | [diff] [blame] | 445 | { |
| 446 | uint32_t val = 0; |
Channagoud Kadabi | 0e60b7d | 2012-11-01 22:56:08 +0530 | [diff] [blame] | 447 | |
Deepa Dinamani | e69ba61 | 2013-06-03 16:10:09 -0700 | [diff] [blame] | 448 | if (!ldo) |
| 449 | { |
| 450 | dprintf(CRITICAL, "LDO pointer is invalid: %p\n", ldo); |
Channagoud Kadabi | 0e60b7d | 2012-11-01 22:56:08 +0530 | [diff] [blame] | 451 | return 1; |
| 452 | } |
| 453 | |
| 454 | /* Enable LDO */ |
| 455 | if (enable) |
| 456 | val = (1 << LDO_VREG_ENABLE_BIT); |
| 457 | else |
| 458 | val = (0 << LDO_VREG_ENABLE_BIT); |
| 459 | |
Deepa Dinamani | e69ba61 | 2013-06-03 16:10:09 -0700 | [diff] [blame] | 460 | REG_WRITE((ldo->base + LDO_EN_CTL_REG), val); |
Channagoud Kadabi | 0e60b7d | 2012-11-01 22:56:08 +0530 | [diff] [blame] | 461 | |
| 462 | return 0; |
| 463 | } |
Deepa Dinamani | 7564f2a | 2013-02-05 17:55:51 -0800 | [diff] [blame] | 464 | |
Kuogee Hsieh | 1183511 | 2013-10-04 15:50:36 -0700 | [diff] [blame] | 465 | /* |
| 466 | * lpg channel register write: |
| 467 | */ |
| 468 | void pm8x41_lpg_write(uint8_t chan, uint8_t off, uint8_t val) |
| 469 | { |
| 470 | uint32_t lpg_base = LPG_N_PERIPHERAL_BASE(chan); |
| 471 | |
| 472 | REG_WRITE(lpg_base + off, val); |
| 473 | } |
| 474 | |
Kuogee Hsieh | 383a5ae | 2014-09-02 16:31:39 -0700 | [diff] [blame] | 475 | /* |
| 476 | * pmi lpg channel register write with slave_id: |
| 477 | */ |
| 478 | void pm8x41_lpg_write_sid(uint8_t sid, uint8_t chan, uint8_t off, uint8_t val) |
| 479 | { |
| 480 | uint32_t lpg_base = LPG_N_PERIPHERAL_BASE(chan); |
| 481 | |
| 482 | lpg_base &= 0x0ffff; /* clear sid */ |
| 483 | lpg_base |= (sid << 16); /* add sid */ |
| 484 | |
| 485 | dprintf(SPEW, "%s: lpg=%d base=%x\n", __func__, chan, lpg_base); |
| 486 | |
| 487 | REG_WRITE(lpg_base + off, val); |
| 488 | } |
| 489 | |
Deepa Dinamani | 7564f2a | 2013-02-05 17:55:51 -0800 | [diff] [blame] | 490 | uint8_t pm8x41_get_pmic_rev() |
| 491 | { |
| 492 | return REG_READ(REVID_REVISION4); |
| 493 | } |
| 494 | |
sundarajan srinivasan | d0f59e8 | 2013-02-12 19:17:02 -0800 | [diff] [blame] | 495 | uint8_t pm8x41_get_pon_reason() |
| 496 | { |
| 497 | return REG_READ(PON_PON_REASON1); |
| 498 | } |
Deepa Dinamani | c342f12 | 2013-06-12 15:41:31 -0700 | [diff] [blame] | 499 | |
Matthew Qin | 5e90d83 | 2014-07-11 11:15:22 +0800 | [diff] [blame] | 500 | uint8_t pm8x41_get_pon_poff_reason1() |
| 501 | { |
| 502 | return REG_READ(PON_POFF_REASON1); |
| 503 | } |
| 504 | |
| 505 | uint8_t pm8x41_get_pon_poff_reason2() |
| 506 | { |
| 507 | return REG_READ(PON_POFF_REASON2); |
| 508 | } |
| 509 | |
Ajay Singh Parmar | 502ed71 | 2014-07-23 22:58:43 -0700 | [diff] [blame] | 510 | void pm8x41_enable_mvs(struct pm8x41_mvs *mvs, enum mvs_en_ctl enable) |
| 511 | { |
| 512 | ASSERT(mvs); |
| 513 | |
| 514 | REG_WRITE(mvs->base + MVS_EN_CTL, enable << MVS_EN_CTL_ENABLE_SHIFT); |
| 515 | } |
| 516 | |
Deepa Dinamani | c342f12 | 2013-06-12 15:41:31 -0700 | [diff] [blame] | 517 | void pm8x41_enable_mpp(struct pm8x41_mpp *mpp, enum mpp_en_ctl enable) |
| 518 | { |
| 519 | ASSERT(mpp); |
| 520 | |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 521 | REG_WRITE(((mpp->base + MPP_EN_CTL) + (mpp_slave_id << 16)), enable << MPP_EN_CTL_ENABLE_SHIFT); |
Deepa Dinamani | c342f12 | 2013-06-12 15:41:31 -0700 | [diff] [blame] | 522 | } |
| 523 | |
| 524 | void pm8x41_config_output_mpp(struct pm8x41_mpp *mpp) |
| 525 | { |
| 526 | ASSERT(mpp); |
| 527 | |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 528 | REG_WRITE(((mpp->base + MPP_DIG_VIN_CTL) + (mpp_slave_id << 16)), mpp->vin); |
Deepa Dinamani | c342f12 | 2013-06-12 15:41:31 -0700 | [diff] [blame] | 529 | |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 530 | REG_WRITE(((mpp->base + MPP_MODE_CTL) + (mpp_slave_id << 16)), mpp->mode | (MPP_DIGITAL_OUTPUT << MPP_MODE_CTL_MODE_SHIFT)); |
Deepa Dinamani | c342f12 | 2013-06-12 15:41:31 -0700 | [diff] [blame] | 531 | } |
Ameya Thakur | b0a62ab | 2013-06-25 13:43:10 -0700 | [diff] [blame] | 532 | |
| 533 | uint8_t pm8x41_get_is_cold_boot() |
| 534 | { |
| 535 | if (REG_READ(PON_WARMBOOT_STATUS1) || REG_READ(PON_WARMBOOT_STATUS2)) { |
| 536 | dprintf(INFO,"%s: Warm boot\n", __func__); |
| 537 | return 0; |
| 538 | } |
| 539 | dprintf(INFO,"%s: cold boot\n", __func__); |
| 540 | return 1; |
| 541 | } |
Amol Jadi | c3231ff | 2013-07-23 14:35:31 -0700 | [diff] [blame] | 542 | |
Channagoud Kadabi | 7ec7a08 | 2014-02-04 15:47:13 -0800 | [diff] [blame] | 543 | /* api to control lnbb clock */ |
| 544 | void pm8x41_lnbb_clock_ctrl(uint8_t enable) |
| 545 | { |
Channagoud Kadabi | 7ec7a08 | 2014-02-04 15:47:13 -0800 | [diff] [blame] | 546 | if (enable) |
| 547 | { |
Channagoud Kadabi | 9089da6 | 2014-11-10 13:19:55 -0800 | [diff] [blame^] | 548 | rpm_clk_enable(&ln_bb_clk[GENERIC_ENABLE][0], 24); |
Channagoud Kadabi | 7ec7a08 | 2014-02-04 15:47:13 -0800 | [diff] [blame] | 549 | } |
| 550 | else |
| 551 | { |
Channagoud Kadabi | 9089da6 | 2014-11-10 13:19:55 -0800 | [diff] [blame^] | 552 | rpm_clk_enable(&ln_bb_clk[GENERIC_DISABLE][0], 24); |
Channagoud Kadabi | 7ec7a08 | 2014-02-04 15:47:13 -0800 | [diff] [blame] | 553 | } |
Channagoud Kadabi | 7ec7a08 | 2014-02-04 15:47:13 -0800 | [diff] [blame] | 554 | } |
| 555 | |
Amol Jadi | c3231ff | 2013-07-23 14:35:31 -0700 | [diff] [blame] | 556 | /* api to control diff clock */ |
| 557 | void pm8x41_diff_clock_ctrl(uint8_t enable) |
| 558 | { |
| 559 | uint8_t reg; |
| 560 | |
| 561 | reg = REG_READ(DIFF_CLK1_EN_CTL); |
| 562 | |
| 563 | if (enable) |
| 564 | { |
| 565 | reg |= BIT(DIFF_CLK1_EN_BIT); |
| 566 | } |
| 567 | else |
| 568 | { |
| 569 | reg &= ~BIT(DIFF_CLK1_EN_BIT); |
| 570 | } |
| 571 | |
| 572 | REG_WRITE(DIFF_CLK1_EN_CTL, reg); |
| 573 | } |
Xiaocheng Li | 73c5712 | 2013-09-14 17:32:00 +0800 | [diff] [blame] | 574 | |
| 575 | void pm8x41_clear_pmic_watchdog(void) |
| 576 | { |
| 577 | pm8x41_reg_write(PMIC_WD_RESET_S2_CTL2, 0x0); |
| 578 | } |
Channagoud Kadabi | 1372b90 | 2013-10-28 16:20:51 -0700 | [diff] [blame] | 579 | |
| 580 | /* API to check for borken battery */ |
| 581 | int pm8xxx_is_battery_broken() |
| 582 | { |
| 583 | uint8_t trkl_default = 0; |
| 584 | uint8_t vbat_det_default = 0; |
| 585 | int batt_is_broken = 0; |
| 586 | |
| 587 | /* Store original trickle charging current setting */ |
| 588 | trkl_default = pm8x41_reg_read(PM8XXX_IBAT_ATC_A); |
| 589 | /* Store original VBAT_DET_LO setting */ |
| 590 | vbat_det_default = pm8x41_reg_read(PM8XXX_VBAT_DET); |
| 591 | |
| 592 | /*Set trickle charge current to 50mA (IBAT_ATC_A = 0x00) */ |
| 593 | pm8x41_reg_write(PM8XXX_IBAT_ATC_A, 0x00); |
| 594 | /* Set VBAT_DET_LO to 4.3V so that VBAT_DET_HI = 4.52V (VBAT_DET_LO = 0x35) */ |
| 595 | pm8x41_reg_write(PM8XXX_VBAT_DET, VBAT_DET_LO_4_30V); |
| 596 | /* Unlock SMBBP Secured Register */ |
| 597 | pm8x41_reg_write(PM8XXX_SEC_ACCESS, SEC_ACCESS); |
| 598 | /* Disable VTRKL_FAULT comp (SMBBP_CHGR_COMP_OVR0 = 0x08) */ |
| 599 | pm8x41_reg_write(PM8XXX_COMP_OVR0, OVR0_DIS_VTRKL_FAULT); |
| 600 | /* Disable VCP (SMBB_BAT_IF_VCP = 0x00) */ |
| 601 | pm8x41_reg_write(PM8XXX_VCP, 0x00); |
| 602 | /* Unlock SMBBP Secured Register */ |
| 603 | pm8x41_reg_write(PM8XXX_SEC_ACCESS, SEC_ACCESS); |
| 604 | /* Force trickle charging (SMBB_CHGR_TRKL_CHG_TEST = 0x01) */ |
| 605 | pm8x41_reg_write(PM8XXX_TRKL_CHG_TEST, CHG_TRICKLE_FORCED_ON); |
| 606 | /* Wait for vbat to rise */ |
| 607 | mdelay(12); |
| 608 | |
| 609 | /* Check Above VBAT_DET_HIGH status */ |
| 610 | if (pm8x41_reg_read(PM8XXX_VBAT_IN_TSTS) & VBAT_DET_HI_RT_STS) |
| 611 | batt_is_broken = 1; |
| 612 | else |
| 613 | batt_is_broken = 0; |
| 614 | |
| 615 | /* Unlock SMBBP Secured Register */ |
| 616 | pm8x41_reg_write(PM8XXX_SEC_ACCESS, SEC_ACCESS); |
| 617 | |
| 618 | /* Disable force trickle charging */ |
| 619 | pm8x41_reg_write(PM8XXX_TRKL_CHG_TEST, 0x00); |
| 620 | /* re-enable VCP */ |
| 621 | pm8x41_reg_write(PM8XXX_VCP, VCP_ENABLE); |
| 622 | /* restore trickle charging default current */ |
| 623 | pm8x41_reg_write(PM8XXX_IBAT_ATC_A, trkl_default); |
| 624 | /* restore VBAT_DET_LO setting to original value */ |
| 625 | pm8x41_reg_write(PM8XXX_VBAT_DET, vbat_det_default); |
| 626 | |
| 627 | return batt_is_broken; |
| 628 | } |