palmas.c 4.0 KB

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  1. /*
  2. * (C) Copyright 2012-2013
  3. * Texas Instruments, <www.ti.com>
  4. *
  5. * SPDX-License-Identifier: GPL-2.0+
  6. */
  7. #include <config.h>
  8. #include <palmas.h>
  9. void palmas_init_settings(void)
  10. {
  11. #ifdef CONFIG_PALMAS_SMPS7_FPWM
  12. int err;
  13. /*
  14. * Set SMPS7 (1.8 V I/O supply on platforms with TWL6035/37) to
  15. * forced PWM mode. This reduces noise (but affects efficiency).
  16. */
  17. u8 val = SMPS_MODE_SLP_FPWM | SMPS_MODE_ACT_FPWM;
  18. err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS7_CTRL, val);
  19. if (err)
  20. printf("palmas: could not force PWM for SMPS7: err = %d\n",
  21. err);
  22. #endif
  23. }
  24. int palmas_mmc1_poweron_ldo(void)
  25. {
  26. u8 val = 0;
  27. #if defined(CONFIG_DRA7XX) || defined(CONFIG_AM57XX)
  28. /*
  29. * Currently valid for the dra7xx_evm board:
  30. * Set TPS659038 LDO1 to 3.0 V
  31. */
  32. val = LDO_VOLT_3V0;
  33. if (palmas_i2c_write_u8(TPS65903X_CHIP_P1, LDO1_VOLTAGE, val)) {
  34. printf("tps65903x: could not set LDO1 voltage.\n");
  35. return 1;
  36. }
  37. /* TURN ON LDO1 */
  38. val = RSC_MODE_SLEEP | RSC_MODE_ACTIVE;
  39. if (palmas_i2c_write_u8(TPS65903X_CHIP_P1, LDO1_CTRL, val)) {
  40. printf("tps65903x: could not turn on LDO1.\n");
  41. return 1;
  42. }
  43. return 0;
  44. #else
  45. /*
  46. * We assume that this is a OMAP543X + TWL603X board:
  47. * Set TWL6035/37 LDO9 to 3.0 V
  48. */
  49. val = LDO_VOLT_3V0;
  50. return twl603x_mmc1_set_ldo9(val);
  51. #endif
  52. }
  53. /*
  54. * On some OMAP5 + TWL603X hardware the SD card socket and LDO9_IN are
  55. * powered by an external 3.3 V regulator, while the output of LDO9
  56. * supplies VDDS_SDCARD for the OMAP5 interface only. This implies that
  57. * LDO9 could be set to 'bypass' mode when required (e.g. for 3.3 V cards).
  58. */
  59. int twl603x_mmc1_set_ldo9(u8 vsel)
  60. {
  61. u8 cval = 0, vval = 0; /* Off by default */
  62. int err;
  63. if (vsel) {
  64. /* Turn on */
  65. if (vsel > LDO_VOLT_3V3) {
  66. /* Put LDO9 in bypass */
  67. cval = LDO9_BYP_EN | RSC_MODE_SLEEP | RSC_MODE_ACTIVE;
  68. vval = LDO_VOLT_3V3;
  69. } else {
  70. cval = RSC_MODE_SLEEP | RSC_MODE_ACTIVE;
  71. vval = vsel & 0x3f;
  72. }
  73. }
  74. err = palmas_i2c_write_u8(TWL603X_CHIP_P1, LDO9_VOLTAGE, vval);
  75. if (err) {
  76. printf("twl603x: could not set LDO9 %s: err = %d\n",
  77. vsel > LDO_VOLT_3V3 ? "bypass" : "voltage", err);
  78. return err;
  79. }
  80. err = palmas_i2c_write_u8(TWL603X_CHIP_P1, LDO9_CTRL, cval);
  81. if (err)
  82. printf("twl603x: could not turn %s LDO9: err = %d\n",
  83. cval ? "on" : "off", err);
  84. return err;
  85. }
  86. #ifdef CONFIG_PALMAS_AUDPWR
  87. /*
  88. * Turn audio codec power and 32 kHz clock on/off. Use for
  89. * testing OMAP543X + TWL603X + TWL604X boards only.
  90. */
  91. int twl603x_audio_power(u8 on)
  92. {
  93. u8 cval = 0, vval = 0, c32k = 0;
  94. int err;
  95. if (on) {
  96. vval = SMPS_VOLT_2V1;
  97. cval = SMPS_MODE_SLP_AUTO | SMPS_MODE_ACT_AUTO;
  98. c32k = RSC_MODE_SLEEP | RSC_MODE_ACTIVE;
  99. }
  100. /* Set SMPS9 to 2.1 V (for TWL604x), or to 0 (off) */
  101. err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS9_VOLTAGE, vval);
  102. if (err) {
  103. printf("twl603x: could not set SMPS9 voltage: err = %d\n",
  104. err);
  105. return err;
  106. }
  107. /* Turn on or off SMPS9 */
  108. err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS9_CTRL, cval);
  109. if (err) {
  110. printf("twl603x: could not turn SMPS9 %s: err = %d\n",
  111. cval ? "on" : "off", err);
  112. return err;
  113. }
  114. /* Output 32 kHz clock on or off */
  115. err = palmas_i2c_write_u8(TWL603X_CHIP_P1, CLK32KGAUDIO_CTRL, c32k);
  116. if (err)
  117. printf("twl603x: could not turn CLK32KGAUDIO %s: err = %d\n",
  118. c32k ? "on" : "off", err);
  119. return err;
  120. }
  121. #endif
  122. #ifdef CONFIG_PALMAS_USB_SS_PWR
  123. /**
  124. * @brief palmas_enable_ss_ldo - Configure EVM board specific configurations
  125. * for the USB Super speed SMPS10 regulator.
  126. *
  127. * @return 0
  128. */
  129. int palmas_enable_ss_ldo(void)
  130. {
  131. /* Enable smps10 regulator */
  132. return palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS10_CTRL,
  133. SMPS10_MODE_ACTIVE_D);
  134. }
  135. #endif
  136. /*
  137. * Enable/disable back-up battery (or super cap) charging on TWL6035/37.
  138. * Please use defined BB_xxx values.
  139. */
  140. int twl603x_enable_bb_charge(u8 bb_fields)
  141. {
  142. u8 val = bb_fields & 0x0f;
  143. int err;
  144. val |= (VRTC_EN_SLP | VRTC_EN_OFF | VRTC_PWEN);
  145. err = palmas_i2c_write_u8(TWL603X_CHIP_P1, BB_VRTC_CTRL, val);
  146. if (err)
  147. printf("twl603x: could not set BB_VRTC_CTRL to 0x%02x: err = %d\n",
  148. val, err);
  149. return err;
  150. }