palmas.c 5.1 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * (C) Copyright 2012-2013
  4. * Texas Instruments, <www.ti.com>
  5. */
  6. #include <config.h>
  7. #include <palmas.h>
  8. void palmas_init_settings(void)
  9. {
  10. #ifdef CONFIG_PALMAS_SMPS7_FPWM
  11. int err;
  12. /*
  13. * Set SMPS7 (1.8 V I/O supply on platforms with TWL6035/37) to
  14. * forced PWM mode. This reduces noise (but affects efficiency).
  15. */
  16. u8 val = SMPS_MODE_SLP_FPWM | SMPS_MODE_ACT_FPWM;
  17. err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS7_CTRL, val);
  18. if (err)
  19. printf("palmas: could not force PWM for SMPS7: err = %d\n",
  20. err);
  21. #endif
  22. }
  23. #if defined(CONFIG_OMAP54XX)
  24. int lp873x_mmc1_poweron_ldo(uint voltage)
  25. {
  26. if (palmas_i2c_write_u8(LP873X_LDO1_ADDR, LP873X_LDO1_VOLTAGE,
  27. voltage)) {
  28. printf("lp873x: could not set LDO1 voltage.\n");
  29. return 1;
  30. }
  31. /* TURN ON LDO1 */
  32. if (palmas_i2c_write_u8(LP873X_LDO1_ADDR, LP873X_LDO1_CTRL,
  33. LP873X_LDO_CTRL_EN | LP873X_LDO_CTRL_RDIS_EN)) {
  34. printf("lp873x: could not turn on LDO1.\n");
  35. return 1;
  36. }
  37. return 0;
  38. }
  39. #endif
  40. int palmas_mmc1_poweron_ldo(uint ldo_volt, uint ldo_ctrl, uint voltage)
  41. {
  42. u8 val = 0;
  43. #if defined(CONFIG_DRA7XX)
  44. int ret;
  45. ret = palmas_i2c_write_u8(TPS65903X_CHIP_P1, ldo_volt, voltage);
  46. if (ret) {
  47. printf("tps65903x: could not set LDO1 voltage.\n");
  48. return ret;
  49. }
  50. /* TURN ON LDO1 */
  51. val = RSC_MODE_SLEEP | RSC_MODE_ACTIVE;
  52. ret = palmas_i2c_write_u8(TPS65903X_CHIP_P1, ldo_ctrl, val);
  53. if (ret) {
  54. printf("tps65903x: could not turn on LDO1.\n");
  55. return ret;
  56. }
  57. return 0;
  58. #else
  59. /*
  60. * We assume that this is a OMAP543X + TWL603X board:
  61. * Set TWL6035/37 LDO9 to 3.0 V
  62. */
  63. val = LDO_VOLT_3V0;
  64. return twl603x_mmc1_set_ldo9(val);
  65. #endif
  66. }
  67. /*
  68. * On some OMAP5 + TWL603X hardware the SD card socket and LDO9_IN are
  69. * powered by an external 3.3 V regulator, while the output of LDO9
  70. * supplies VDDS_SDCARD for the OMAP5 interface only. This implies that
  71. * LDO9 could be set to 'bypass' mode when required (e.g. for 3.3 V cards).
  72. */
  73. int twl603x_mmc1_set_ldo9(u8 vsel)
  74. {
  75. u8 cval = 0, vval = 0; /* Off by default */
  76. int err;
  77. if (vsel) {
  78. /* Turn on */
  79. if (vsel > LDO_VOLT_3V3) {
  80. /* Put LDO9 in bypass */
  81. cval = LDO9_BYP_EN | RSC_MODE_SLEEP | RSC_MODE_ACTIVE;
  82. vval = LDO_VOLT_3V3;
  83. } else {
  84. cval = RSC_MODE_SLEEP | RSC_MODE_ACTIVE;
  85. vval = vsel & 0x3f;
  86. }
  87. }
  88. err = palmas_i2c_write_u8(TWL603X_CHIP_P1, LDO9_VOLTAGE, vval);
  89. if (err) {
  90. printf("twl603x: could not set LDO9 %s: err = %d\n",
  91. vsel > LDO_VOLT_3V3 ? "bypass" : "voltage", err);
  92. return err;
  93. }
  94. err = palmas_i2c_write_u8(TWL603X_CHIP_P1, LDO9_CTRL, cval);
  95. if (err)
  96. printf("twl603x: could not turn %s LDO9: err = %d\n",
  97. cval ? "on" : "off", err);
  98. return err;
  99. }
  100. #ifdef CONFIG_PALMAS_AUDPWR
  101. /*
  102. * Turn audio codec power and 32 kHz clock on/off. Use for
  103. * testing OMAP543X + TWL603X + TWL604X boards only.
  104. */
  105. int twl603x_audio_power(u8 on)
  106. {
  107. u8 cval = 0, vval = 0, c32k = 0;
  108. int err;
  109. if (on) {
  110. vval = SMPS_VOLT_2V1;
  111. cval = SMPS_MODE_SLP_AUTO | SMPS_MODE_ACT_AUTO;
  112. c32k = RSC_MODE_SLEEP | RSC_MODE_ACTIVE;
  113. }
  114. /* Set SMPS9 to 2.1 V (for TWL604x), or to 0 (off) */
  115. err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS9_VOLTAGE, vval);
  116. if (err) {
  117. printf("twl603x: could not set SMPS9 voltage: err = %d\n",
  118. err);
  119. return err;
  120. }
  121. /* Turn on or off SMPS9 */
  122. err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS9_CTRL, cval);
  123. if (err) {
  124. printf("twl603x: could not turn SMPS9 %s: err = %d\n",
  125. cval ? "on" : "off", err);
  126. return err;
  127. }
  128. /* Output 32 kHz clock on or off */
  129. err = palmas_i2c_write_u8(TWL603X_CHIP_P1, CLK32KGAUDIO_CTRL, c32k);
  130. if (err)
  131. printf("twl603x: could not turn CLK32KGAUDIO %s: err = %d\n",
  132. c32k ? "on" : "off", err);
  133. return err;
  134. }
  135. #endif
  136. #ifdef CONFIG_PALMAS_USB_SS_PWR
  137. /**
  138. * @brief palmas_enable_ss_ldo - Configure EVM board specific configurations
  139. * for the USB Super speed SMPS10 regulator.
  140. *
  141. * @return 0
  142. */
  143. int palmas_enable_ss_ldo(void)
  144. {
  145. /* Enable smps10 regulator */
  146. return palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS10_CTRL,
  147. SMPS10_MODE_ACTIVE_D);
  148. }
  149. #endif
  150. /*
  151. * Enable/disable back-up battery (or super cap) charging on TWL6035/37.
  152. * Please use defined BB_xxx values.
  153. */
  154. int twl603x_enable_bb_charge(u8 bb_fields)
  155. {
  156. u8 val = bb_fields & 0x0f;
  157. int err;
  158. val |= (VRTC_EN_SLP | VRTC_EN_OFF | VRTC_PWEN);
  159. err = palmas_i2c_write_u8(TWL603X_CHIP_P1, BB_VRTC_CTRL, val);
  160. if (err)
  161. printf("twl603x: could not set BB_VRTC_CTRL to 0x%02x: err = %d\n",
  162. val, err);
  163. return err;
  164. }
  165. #ifdef CONFIG_DM_I2C
  166. int palmas_i2c_write_u8(u8 chip_no, u8 reg, u8 val)
  167. {
  168. struct udevice *dev;
  169. int ret;
  170. ret = i2c_get_chip_for_busnum(0, chip_no, 1, &dev);
  171. if (ret) {
  172. pr_err("unable to get I2C bus. ret %d\n", ret);
  173. return ret;
  174. }
  175. ret = dm_i2c_reg_write(dev, reg, val);
  176. if (ret) {
  177. pr_err("writing to palmas failed. ret %d\n", ret);
  178. return ret;
  179. }
  180. return 0;
  181. }
  182. int palmas_i2c_read_u8(u8 chip_no, u8 reg, u8 *valp)
  183. {
  184. struct udevice *dev;
  185. int ret;
  186. ret = i2c_get_chip_for_busnum(0, chip_no, 1, &dev);
  187. if (ret) {
  188. pr_err("unable to get I2C bus. ret %d\n", ret);
  189. return ret;
  190. }
  191. ret = dm_i2c_reg_read(dev, reg);
  192. if (ret < 0) {
  193. pr_err("reading from palmas failed. ret %d\n", ret);
  194. return ret;
  195. }
  196. *valp = (u8)ret;
  197. return 0;
  198. }
  199. #endif