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path: root/drivers/media/usb/dvb-usb-v2/mxl111sf-gpio.c
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Diffstat (limited to 'drivers/media/usb/dvb-usb-v2/mxl111sf-gpio.c')
-rw-r--r--drivers/media/usb/dvb-usb-v2/mxl111sf-gpio.c744
1 files changed, 744 insertions, 0 deletions
diff --git a/drivers/media/usb/dvb-usb-v2/mxl111sf-gpio.c b/drivers/media/usb/dvb-usb-v2/mxl111sf-gpio.c
new file mode 100644
index 0000000000..ef489c566b
--- /dev/null
+++ b/drivers/media/usb/dvb-usb-v2/mxl111sf-gpio.c
@@ -0,0 +1,744 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * mxl111sf-gpio.c - driver for the MaxLinear MXL111SF
+ *
+ * Copyright (C) 2010-2014 Michael Krufky <mkrufky@linuxtv.org>
+ */
+
+#include "mxl111sf-gpio.h"
+#include "mxl111sf-i2c.h"
+#include "mxl111sf.h"
+
+/* ------------------------------------------------------------------------- */
+
+#define MXL_GPIO_MUX_REG_0 0x84
+#define MXL_GPIO_MUX_REG_1 0x89
+#define MXL_GPIO_MUX_REG_2 0x82
+
+#define MXL_GPIO_DIR_INPUT 0
+#define MXL_GPIO_DIR_OUTPUT 1
+
+
+static int mxl111sf_set_gpo_state(struct mxl111sf_state *state, u8 pin, u8 val)
+{
+ int ret;
+ u8 tmp;
+
+ mxl_debug_adv("(%d, %d)", pin, val);
+
+ if ((pin > 0) && (pin < 8)) {
+ ret = mxl111sf_read_reg(state, 0x19, &tmp);
+ if (mxl_fail(ret))
+ goto fail;
+ tmp &= ~(1 << (pin - 1));
+ tmp |= (val << (pin - 1));
+ ret = mxl111sf_write_reg(state, 0x19, tmp);
+ if (mxl_fail(ret))
+ goto fail;
+ } else if (pin <= 10) {
+ if (pin == 0)
+ pin += 7;
+ ret = mxl111sf_read_reg(state, 0x30, &tmp);
+ if (mxl_fail(ret))
+ goto fail;
+ tmp &= ~(1 << (pin - 3));
+ tmp |= (val << (pin - 3));
+ ret = mxl111sf_write_reg(state, 0x30, tmp);
+ if (mxl_fail(ret))
+ goto fail;
+ } else
+ ret = -EINVAL;
+fail:
+ return ret;
+}
+
+static int mxl111sf_get_gpi_state(struct mxl111sf_state *state, u8 pin, u8 *val)
+{
+ int ret;
+ u8 tmp;
+
+ mxl_debug("(0x%02x)", pin);
+
+ *val = 0;
+
+ switch (pin) {
+ case 0:
+ case 1:
+ case 2:
+ case 3:
+ ret = mxl111sf_read_reg(state, 0x23, &tmp);
+ if (mxl_fail(ret))
+ goto fail;
+ *val = (tmp >> (pin + 4)) & 0x01;
+ break;
+ case 4:
+ case 5:
+ case 6:
+ case 7:
+ ret = mxl111sf_read_reg(state, 0x2f, &tmp);
+ if (mxl_fail(ret))
+ goto fail;
+ *val = (tmp >> pin) & 0x01;
+ break;
+ case 8:
+ case 9:
+ case 10:
+ ret = mxl111sf_read_reg(state, 0x22, &tmp);
+ if (mxl_fail(ret))
+ goto fail;
+ *val = (tmp >> (pin - 3)) & 0x01;
+ break;
+ default:
+ return -EINVAL; /* invalid pin */
+ }
+fail:
+ return ret;
+}
+
+struct mxl_gpio_cfg {
+ u8 pin;
+ u8 dir;
+ u8 val;
+};
+
+static int mxl111sf_config_gpio_pins(struct mxl111sf_state *state,
+ struct mxl_gpio_cfg *gpio_cfg)
+{
+ int ret;
+ u8 tmp;
+
+ mxl_debug_adv("(%d, %d)", gpio_cfg->pin, gpio_cfg->dir);
+
+ switch (gpio_cfg->pin) {
+ case 0:
+ case 1:
+ case 2:
+ case 3:
+ ret = mxl111sf_read_reg(state, MXL_GPIO_MUX_REG_0, &tmp);
+ if (mxl_fail(ret))
+ goto fail;
+ tmp &= ~(1 << (gpio_cfg->pin + 4));
+ tmp |= (gpio_cfg->dir << (gpio_cfg->pin + 4));
+ ret = mxl111sf_write_reg(state, MXL_GPIO_MUX_REG_0, tmp);
+ if (mxl_fail(ret))
+ goto fail;
+ break;
+ case 4:
+ case 5:
+ case 6:
+ case 7:
+ ret = mxl111sf_read_reg(state, MXL_GPIO_MUX_REG_1, &tmp);
+ if (mxl_fail(ret))
+ goto fail;
+ tmp &= ~(1 << gpio_cfg->pin);
+ tmp |= (gpio_cfg->dir << gpio_cfg->pin);
+ ret = mxl111sf_write_reg(state, MXL_GPIO_MUX_REG_1, tmp);
+ if (mxl_fail(ret))
+ goto fail;
+ break;
+ case 8:
+ case 9:
+ case 10:
+ ret = mxl111sf_read_reg(state, MXL_GPIO_MUX_REG_2, &tmp);
+ if (mxl_fail(ret))
+ goto fail;
+ tmp &= ~(1 << (gpio_cfg->pin - 3));
+ tmp |= (gpio_cfg->dir << (gpio_cfg->pin - 3));
+ ret = mxl111sf_write_reg(state, MXL_GPIO_MUX_REG_2, tmp);
+ if (mxl_fail(ret))
+ goto fail;
+ break;
+ default:
+ return -EINVAL; /* invalid pin */
+ }
+
+ ret = (MXL_GPIO_DIR_OUTPUT == gpio_cfg->dir) ?
+ mxl111sf_set_gpo_state(state,
+ gpio_cfg->pin, gpio_cfg->val) :
+ mxl111sf_get_gpi_state(state,
+ gpio_cfg->pin, &gpio_cfg->val);
+ mxl_fail(ret);
+fail:
+ return ret;
+}
+
+static int mxl111sf_hw_do_set_gpio(struct mxl111sf_state *state,
+ int gpio, int direction, int val)
+{
+ struct mxl_gpio_cfg gpio_config = {
+ .pin = gpio,
+ .dir = direction,
+ .val = val,
+ };
+
+ mxl_debug("(%d, %d, %d)", gpio, direction, val);
+
+ return mxl111sf_config_gpio_pins(state, &gpio_config);
+}
+
+/* ------------------------------------------------------------------------- */
+
+#define PIN_MUX_MPEG_MODE_MASK 0x40 /* 0x17 <6> */
+#define PIN_MUX_MPEG_PAR_EN_MASK 0x01 /* 0x18 <0> */
+#define PIN_MUX_MPEG_SER_EN_MASK 0x02 /* 0x18 <1> */
+#define PIN_MUX_MPG_IN_MUX_MASK 0x80 /* 0x3D <7> */
+#define PIN_MUX_BT656_ENABLE_MASK 0x04 /* 0x12 <2> */
+#define PIN_MUX_I2S_ENABLE_MASK 0x40 /* 0x15 <6> */
+#define PIN_MUX_SPI_MODE_MASK 0x10 /* 0x3D <4> */
+#define PIN_MUX_MCLK_EN_CTRL_MASK 0x10 /* 0x82 <4> */
+#define PIN_MUX_MPSYN_EN_CTRL_MASK 0x20 /* 0x82 <5> */
+#define PIN_MUX_MDVAL_EN_CTRL_MASK 0x40 /* 0x82 <6> */
+#define PIN_MUX_MPERR_EN_CTRL_MASK 0x80 /* 0x82 <7> */
+#define PIN_MUX_MDAT_EN_0_MASK 0x10 /* 0x84 <4> */
+#define PIN_MUX_MDAT_EN_1_MASK 0x20 /* 0x84 <5> */
+#define PIN_MUX_MDAT_EN_2_MASK 0x40 /* 0x84 <6> */
+#define PIN_MUX_MDAT_EN_3_MASK 0x80 /* 0x84 <7> */
+#define PIN_MUX_MDAT_EN_4_MASK 0x10 /* 0x89 <4> */
+#define PIN_MUX_MDAT_EN_5_MASK 0x20 /* 0x89 <5> */
+#define PIN_MUX_MDAT_EN_6_MASK 0x40 /* 0x89 <6> */
+#define PIN_MUX_MDAT_EN_7_MASK 0x80 /* 0x89 <7> */
+
+int mxl111sf_config_pin_mux_modes(struct mxl111sf_state *state,
+ enum mxl111sf_mux_config pin_mux_config)
+{
+ u8 r12, r15, r17, r18, r3D, r82, r84, r89;
+ int ret;
+
+ mxl_debug("(%d)", pin_mux_config);
+
+ ret = mxl111sf_read_reg(state, 0x17, &r17);
+ if (mxl_fail(ret))
+ goto fail;
+ ret = mxl111sf_read_reg(state, 0x18, &r18);
+ if (mxl_fail(ret))
+ goto fail;
+ ret = mxl111sf_read_reg(state, 0x12, &r12);
+ if (mxl_fail(ret))
+ goto fail;
+ ret = mxl111sf_read_reg(state, 0x15, &r15);
+ if (mxl_fail(ret))
+ goto fail;
+ ret = mxl111sf_read_reg(state, 0x82, &r82);
+ if (mxl_fail(ret))
+ goto fail;
+ ret = mxl111sf_read_reg(state, 0x84, &r84);
+ if (mxl_fail(ret))
+ goto fail;
+ ret = mxl111sf_read_reg(state, 0x89, &r89);
+ if (mxl_fail(ret))
+ goto fail;
+ ret = mxl111sf_read_reg(state, 0x3D, &r3D);
+ if (mxl_fail(ret))
+ goto fail;
+
+ switch (pin_mux_config) {
+ case PIN_MUX_TS_OUT_PARALLEL:
+ /* mpeg_mode = 1 */
+ r17 |= PIN_MUX_MPEG_MODE_MASK;
+ /* mpeg_par_en = 1 */
+ r18 |= PIN_MUX_MPEG_PAR_EN_MASK;
+ /* mpeg_ser_en = 0 */
+ r18 &= ~PIN_MUX_MPEG_SER_EN_MASK;
+ /* mpg_in_mux = 0 */
+ r3D &= ~PIN_MUX_MPG_IN_MUX_MASK;
+ /* bt656_enable = 0 */
+ r12 &= ~PIN_MUX_BT656_ENABLE_MASK;
+ /* i2s_enable = 0 */
+ r15 &= ~PIN_MUX_I2S_ENABLE_MASK;
+ /* spi_mode = 0 */
+ r3D &= ~PIN_MUX_SPI_MODE_MASK;
+ /* mclk_en_ctrl = 1 */
+ r82 |= PIN_MUX_MCLK_EN_CTRL_MASK;
+ /* mperr_en_ctrl = 1 */
+ r82 |= PIN_MUX_MPERR_EN_CTRL_MASK;
+ /* mdval_en_ctrl = 1 */
+ r82 |= PIN_MUX_MDVAL_EN_CTRL_MASK;
+ /* mpsyn_en_ctrl = 1 */
+ r82 |= PIN_MUX_MPSYN_EN_CTRL_MASK;
+ /* mdat_en_ctrl[3:0] = 0xF */
+ r84 |= 0xF0;
+ /* mdat_en_ctrl[7:4] = 0xF */
+ r89 |= 0xF0;
+ break;
+ case PIN_MUX_TS_OUT_SERIAL:
+ /* mpeg_mode = 1 */
+ r17 |= PIN_MUX_MPEG_MODE_MASK;
+ /* mpeg_par_en = 0 */
+ r18 &= ~PIN_MUX_MPEG_PAR_EN_MASK;
+ /* mpeg_ser_en = 1 */
+ r18 |= PIN_MUX_MPEG_SER_EN_MASK;
+ /* mpg_in_mux = 0 */
+ r3D &= ~PIN_MUX_MPG_IN_MUX_MASK;
+ /* bt656_enable = 0 */
+ r12 &= ~PIN_MUX_BT656_ENABLE_MASK;
+ /* i2s_enable = 0 */
+ r15 &= ~PIN_MUX_I2S_ENABLE_MASK;
+ /* spi_mode = 0 */
+ r3D &= ~PIN_MUX_SPI_MODE_MASK;
+ /* mclk_en_ctrl = 1 */
+ r82 |= PIN_MUX_MCLK_EN_CTRL_MASK;
+ /* mperr_en_ctrl = 1 */
+ r82 |= PIN_MUX_MPERR_EN_CTRL_MASK;
+ /* mdval_en_ctrl = 1 */
+ r82 |= PIN_MUX_MDVAL_EN_CTRL_MASK;
+ /* mpsyn_en_ctrl = 1 */
+ r82 |= PIN_MUX_MPSYN_EN_CTRL_MASK;
+ /* mdat_en_ctrl[3:0] = 0xF */
+ r84 |= 0xF0;
+ /* mdat_en_ctrl[7:4] = 0xF */
+ r89 |= 0xF0;
+ break;
+ case PIN_MUX_GPIO_MODE:
+ /* mpeg_mode = 0 */
+ r17 &= ~PIN_MUX_MPEG_MODE_MASK;
+ /* mpeg_par_en = 0 */
+ r18 &= ~PIN_MUX_MPEG_PAR_EN_MASK;
+ /* mpeg_ser_en = 0 */
+ r18 &= ~PIN_MUX_MPEG_SER_EN_MASK;
+ /* mpg_in_mux = 0 */
+ r3D &= ~PIN_MUX_MPG_IN_MUX_MASK;
+ /* bt656_enable = 0 */
+ r12 &= ~PIN_MUX_BT656_ENABLE_MASK;
+ /* i2s_enable = 0 */
+ r15 &= ~PIN_MUX_I2S_ENABLE_MASK;
+ /* spi_mode = 0 */
+ r3D &= ~PIN_MUX_SPI_MODE_MASK;
+ /* mclk_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MCLK_EN_CTRL_MASK;
+ /* mperr_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MPERR_EN_CTRL_MASK;
+ /* mdval_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MDVAL_EN_CTRL_MASK;
+ /* mpsyn_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MPSYN_EN_CTRL_MASK;
+ /* mdat_en_ctrl[3:0] = 0x0 */
+ r84 &= 0x0F;
+ /* mdat_en_ctrl[7:4] = 0x0 */
+ r89 &= 0x0F;
+ break;
+ case PIN_MUX_TS_SERIAL_IN_MODE_0:
+ /* mpeg_mode = 0 */
+ r17 &= ~PIN_MUX_MPEG_MODE_MASK;
+ /* mpeg_par_en = 0 */
+ r18 &= ~PIN_MUX_MPEG_PAR_EN_MASK;
+ /* mpeg_ser_en = 1 */
+ r18 |= PIN_MUX_MPEG_SER_EN_MASK;
+ /* mpg_in_mux = 0 */
+ r3D &= ~PIN_MUX_MPG_IN_MUX_MASK;
+ /* bt656_enable = 0 */
+ r12 &= ~PIN_MUX_BT656_ENABLE_MASK;
+ /* i2s_enable = 0 */
+ r15 &= ~PIN_MUX_I2S_ENABLE_MASK;
+ /* spi_mode = 0 */
+ r3D &= ~PIN_MUX_SPI_MODE_MASK;
+ /* mclk_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MCLK_EN_CTRL_MASK;
+ /* mperr_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MPERR_EN_CTRL_MASK;
+ /* mdval_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MDVAL_EN_CTRL_MASK;
+ /* mpsyn_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MPSYN_EN_CTRL_MASK;
+ /* mdat_en_ctrl[3:0] = 0x0 */
+ r84 &= 0x0F;
+ /* mdat_en_ctrl[7:4] = 0x0 */
+ r89 &= 0x0F;
+ break;
+ case PIN_MUX_TS_SERIAL_IN_MODE_1:
+ /* mpeg_mode = 0 */
+ r17 &= ~PIN_MUX_MPEG_MODE_MASK;
+ /* mpeg_par_en = 0 */
+ r18 &= ~PIN_MUX_MPEG_PAR_EN_MASK;
+ /* mpeg_ser_en = 1 */
+ r18 |= PIN_MUX_MPEG_SER_EN_MASK;
+ /* mpg_in_mux = 1 */
+ r3D |= PIN_MUX_MPG_IN_MUX_MASK;
+ /* bt656_enable = 0 */
+ r12 &= ~PIN_MUX_BT656_ENABLE_MASK;
+ /* i2s_enable = 0 */
+ r15 &= ~PIN_MUX_I2S_ENABLE_MASK;
+ /* spi_mode = 0 */
+ r3D &= ~PIN_MUX_SPI_MODE_MASK;
+ /* mclk_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MCLK_EN_CTRL_MASK;
+ /* mperr_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MPERR_EN_CTRL_MASK;
+ /* mdval_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MDVAL_EN_CTRL_MASK;
+ /* mpsyn_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MPSYN_EN_CTRL_MASK;
+ /* mdat_en_ctrl[3:0] = 0x0 */
+ r84 &= 0x0F;
+ /* mdat_en_ctrl[7:4] = 0x0 */
+ r89 &= 0x0F;
+ break;
+ case PIN_MUX_TS_SPI_IN_MODE_1:
+ /* mpeg_mode = 0 */
+ r17 &= ~PIN_MUX_MPEG_MODE_MASK;
+ /* mpeg_par_en = 0 */
+ r18 &= ~PIN_MUX_MPEG_PAR_EN_MASK;
+ /* mpeg_ser_en = 1 */
+ r18 |= PIN_MUX_MPEG_SER_EN_MASK;
+ /* mpg_in_mux = 1 */
+ r3D |= PIN_MUX_MPG_IN_MUX_MASK;
+ /* bt656_enable = 0 */
+ r12 &= ~PIN_MUX_BT656_ENABLE_MASK;
+ /* i2s_enable = 1 */
+ r15 |= PIN_MUX_I2S_ENABLE_MASK;
+ /* spi_mode = 1 */
+ r3D |= PIN_MUX_SPI_MODE_MASK;
+ /* mclk_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MCLK_EN_CTRL_MASK;
+ /* mperr_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MPERR_EN_CTRL_MASK;
+ /* mdval_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MDVAL_EN_CTRL_MASK;
+ /* mpsyn_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MPSYN_EN_CTRL_MASK;
+ /* mdat_en_ctrl[3:0] = 0x0 */
+ r84 &= 0x0F;
+ /* mdat_en_ctrl[7:4] = 0x0 */
+ r89 &= 0x0F;
+ break;
+ case PIN_MUX_TS_SPI_IN_MODE_0:
+ /* mpeg_mode = 0 */
+ r17 &= ~PIN_MUX_MPEG_MODE_MASK;
+ /* mpeg_par_en = 0 */
+ r18 &= ~PIN_MUX_MPEG_PAR_EN_MASK;
+ /* mpeg_ser_en = 1 */
+ r18 |= PIN_MUX_MPEG_SER_EN_MASK;
+ /* mpg_in_mux = 0 */
+ r3D &= ~PIN_MUX_MPG_IN_MUX_MASK;
+ /* bt656_enable = 0 */
+ r12 &= ~PIN_MUX_BT656_ENABLE_MASK;
+ /* i2s_enable = 1 */
+ r15 |= PIN_MUX_I2S_ENABLE_MASK;
+ /* spi_mode = 1 */
+ r3D |= PIN_MUX_SPI_MODE_MASK;
+ /* mclk_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MCLK_EN_CTRL_MASK;
+ /* mperr_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MPERR_EN_CTRL_MASK;
+ /* mdval_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MDVAL_EN_CTRL_MASK;
+ /* mpsyn_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MPSYN_EN_CTRL_MASK;
+ /* mdat_en_ctrl[3:0] = 0x0 */
+ r84 &= 0x0F;
+ /* mdat_en_ctrl[7:4] = 0x0 */
+ r89 &= 0x0F;
+ break;
+ case PIN_MUX_TS_PARALLEL_IN:
+ /* mpeg_mode = 0 */
+ r17 &= ~PIN_MUX_MPEG_MODE_MASK;
+ /* mpeg_par_en = 1 */
+ r18 |= PIN_MUX_MPEG_PAR_EN_MASK;
+ /* mpeg_ser_en = 0 */
+ r18 &= ~PIN_MUX_MPEG_SER_EN_MASK;
+ /* mpg_in_mux = 0 */
+ r3D &= ~PIN_MUX_MPG_IN_MUX_MASK;
+ /* bt656_enable = 0 */
+ r12 &= ~PIN_MUX_BT656_ENABLE_MASK;
+ /* i2s_enable = 0 */
+ r15 &= ~PIN_MUX_I2S_ENABLE_MASK;
+ /* spi_mode = 0 */
+ r3D &= ~PIN_MUX_SPI_MODE_MASK;
+ /* mclk_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MCLK_EN_CTRL_MASK;
+ /* mperr_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MPERR_EN_CTRL_MASK;
+ /* mdval_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MDVAL_EN_CTRL_MASK;
+ /* mpsyn_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MPSYN_EN_CTRL_MASK;
+ /* mdat_en_ctrl[3:0] = 0x0 */
+ r84 &= 0x0F;
+ /* mdat_en_ctrl[7:4] = 0x0 */
+ r89 &= 0x0F;
+ break;
+ case PIN_MUX_BT656_I2S_MODE:
+ /* mpeg_mode = 0 */
+ r17 &= ~PIN_MUX_MPEG_MODE_MASK;
+ /* mpeg_par_en = 0 */
+ r18 &= ~PIN_MUX_MPEG_PAR_EN_MASK;
+ /* mpeg_ser_en = 0 */
+ r18 &= ~PIN_MUX_MPEG_SER_EN_MASK;
+ /* mpg_in_mux = 0 */
+ r3D &= ~PIN_MUX_MPG_IN_MUX_MASK;
+ /* bt656_enable = 1 */
+ r12 |= PIN_MUX_BT656_ENABLE_MASK;
+ /* i2s_enable = 1 */
+ r15 |= PIN_MUX_I2S_ENABLE_MASK;
+ /* spi_mode = 0 */
+ r3D &= ~PIN_MUX_SPI_MODE_MASK;
+ /* mclk_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MCLK_EN_CTRL_MASK;
+ /* mperr_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MPERR_EN_CTRL_MASK;
+ /* mdval_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MDVAL_EN_CTRL_MASK;
+ /* mpsyn_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MPSYN_EN_CTRL_MASK;
+ /* mdat_en_ctrl[3:0] = 0x0 */
+ r84 &= 0x0F;
+ /* mdat_en_ctrl[7:4] = 0x0 */
+ r89 &= 0x0F;
+ break;
+ case PIN_MUX_DEFAULT:
+ default:
+ /* mpeg_mode = 1 */
+ r17 |= PIN_MUX_MPEG_MODE_MASK;
+ /* mpeg_par_en = 0 */
+ r18 &= ~PIN_MUX_MPEG_PAR_EN_MASK;
+ /* mpeg_ser_en = 0 */
+ r18 &= ~PIN_MUX_MPEG_SER_EN_MASK;
+ /* mpg_in_mux = 0 */
+ r3D &= ~PIN_MUX_MPG_IN_MUX_MASK;
+ /* bt656_enable = 0 */
+ r12 &= ~PIN_MUX_BT656_ENABLE_MASK;
+ /* i2s_enable = 0 */
+ r15 &= ~PIN_MUX_I2S_ENABLE_MASK;
+ /* spi_mode = 0 */
+ r3D &= ~PIN_MUX_SPI_MODE_MASK;
+ /* mclk_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MCLK_EN_CTRL_MASK;
+ /* mperr_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MPERR_EN_CTRL_MASK;
+ /* mdval_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MDVAL_EN_CTRL_MASK;
+ /* mpsyn_en_ctrl = 0 */
+ r82 &= ~PIN_MUX_MPSYN_EN_CTRL_MASK;
+ /* mdat_en_ctrl[3:0] = 0x0 */
+ r84 &= 0x0F;
+ /* mdat_en_ctrl[7:4] = 0x0 */
+ r89 &= 0x0F;
+ break;
+ }
+
+ ret = mxl111sf_write_reg(state, 0x17, r17);
+ if (mxl_fail(ret))
+ goto fail;
+ ret = mxl111sf_write_reg(state, 0x18, r18);
+ if (mxl_fail(ret))
+ goto fail;
+ ret = mxl111sf_write_reg(state, 0x12, r12);
+ if (mxl_fail(ret))
+ goto fail;
+ ret = mxl111sf_write_reg(state, 0x15, r15);
+ if (mxl_fail(ret))
+ goto fail;
+ ret = mxl111sf_write_reg(state, 0x82, r82);
+ if (mxl_fail(ret))
+ goto fail;
+ ret = mxl111sf_write_reg(state, 0x84, r84);
+ if (mxl_fail(ret))
+ goto fail;
+ ret = mxl111sf_write_reg(state, 0x89, r89);
+ if (mxl_fail(ret))
+ goto fail;
+ ret = mxl111sf_write_reg(state, 0x3D, r3D);
+ if (mxl_fail(ret))
+ goto fail;
+fail:
+ return ret;
+}
+
+/* ------------------------------------------------------------------------- */
+
+static int mxl111sf_hw_set_gpio(struct mxl111sf_state *state, int gpio, int val)
+{
+ return mxl111sf_hw_do_set_gpio(state, gpio, MXL_GPIO_DIR_OUTPUT, val);
+}
+
+static int mxl111sf_hw_gpio_initialize(struct mxl111sf_state *state)
+{
+ u8 gpioval = 0x07; /* write protect enabled, signal LEDs off */
+ int i, ret;
+
+ mxl_debug("()");
+
+ for (i = 3; i < 8; i++) {
+ ret = mxl111sf_hw_set_gpio(state, i, (gpioval >> i) & 0x01);
+ if (mxl_fail(ret))
+ break;
+ }
+
+ return ret;
+}
+
+#define PCA9534_I2C_ADDR (0x40 >> 1)
+static int pca9534_set_gpio(struct mxl111sf_state *state, int gpio, int val)
+{
+ u8 w[2] = { 1, 0 };
+ u8 r = 0;
+ struct i2c_msg msg[] = {
+ { .addr = PCA9534_I2C_ADDR,
+ .flags = 0, .buf = w, .len = 1 },
+ { .addr = PCA9534_I2C_ADDR,
+ .flags = I2C_M_RD, .buf = &r, .len = 1 },
+ };
+
+ mxl_debug("(%d, %d)", gpio, val);
+
+ /* read current GPIO levels from flip-flop */
+ i2c_transfer(&state->d->i2c_adap, msg, 2);
+
+ /* prepare write buffer with current GPIO levels */
+ msg[0].len = 2;
+#if 0
+ w[0] = 1;
+#endif
+ w[1] = r;
+
+ /* clear the desired GPIO */
+ w[1] &= ~(1 << gpio);
+
+ /* set the desired GPIO value */
+ w[1] |= ((val ? 1 : 0) << gpio);
+
+ /* write new GPIO levels to flip-flop */
+ i2c_transfer(&state->d->i2c_adap, &msg[0], 1);
+
+ return 0;
+}
+
+static int pca9534_init_port_expander(struct mxl111sf_state *state)
+{
+ u8 w[2] = { 1, 0x07 }; /* write protect enabled, signal LEDs off */
+
+ struct i2c_msg msg = {
+ .addr = PCA9534_I2C_ADDR,
+ .flags = 0, .buf = w, .len = 2
+ };
+
+ mxl_debug("()");
+
+ i2c_transfer(&state->d->i2c_adap, &msg, 1);
+
+ /* configure all pins as outputs */
+ w[0] = 3;
+ w[1] = 0;
+
+ i2c_transfer(&state->d->i2c_adap, &msg, 1);
+
+ return 0;
+}
+
+int mxl111sf_set_gpio(struct mxl111sf_state *state, int gpio, int val)
+{
+ mxl_debug("(%d, %d)", gpio, val);
+
+ switch (state->gpio_port_expander) {
+ default:
+ mxl_printk(KERN_ERR,
+ "gpio_port_expander undefined, assuming PCA9534");
+ fallthrough;
+ case mxl111sf_PCA9534:
+ return pca9534_set_gpio(state, gpio, val);
+ case mxl111sf_gpio_hw:
+ return mxl111sf_hw_set_gpio(state, gpio, val);
+ }
+}
+
+static int mxl111sf_probe_port_expander(struct mxl111sf_state *state)
+{
+ int ret;
+ u8 w = 1;
+ u8 r = 0;
+ struct i2c_msg msg[] = {
+ { .flags = 0, .buf = &w, .len = 1 },
+ { .flags = I2C_M_RD, .buf = &r, .len = 1 },
+ };
+
+ mxl_debug("()");
+
+ msg[0].addr = 0x70 >> 1;
+ msg[1].addr = 0x70 >> 1;
+
+ /* read current GPIO levels from flip-flop */
+ ret = i2c_transfer(&state->d->i2c_adap, msg, 2);
+ if (ret == 2) {
+ state->port_expander_addr = msg[0].addr;
+ state->gpio_port_expander = mxl111sf_PCA9534;
+ mxl_debug("found port expander at 0x%02x",
+ state->port_expander_addr);
+ return 0;
+ }
+
+ msg[0].addr = 0x40 >> 1;
+ msg[1].addr = 0x40 >> 1;
+
+ ret = i2c_transfer(&state->d->i2c_adap, msg, 2);
+ if (ret == 2) {
+ state->port_expander_addr = msg[0].addr;
+ state->gpio_port_expander = mxl111sf_PCA9534;
+ mxl_debug("found port expander at 0x%02x",
+ state->port_expander_addr);
+ return 0;
+ }
+ state->port_expander_addr = 0xff;
+ state->gpio_port_expander = mxl111sf_gpio_hw;
+ mxl_debug("using hardware gpio");
+ return 0;
+}
+
+int mxl111sf_init_port_expander(struct mxl111sf_state *state)
+{
+ mxl_debug("()");
+
+ if (0x00 == state->port_expander_addr)
+ mxl111sf_probe_port_expander(state);
+
+ switch (state->gpio_port_expander) {
+ default:
+ mxl_printk(KERN_ERR,
+ "gpio_port_expander undefined, assuming PCA9534");
+ fallthrough;
+ case mxl111sf_PCA9534:
+ return pca9534_init_port_expander(state);
+ case mxl111sf_gpio_hw:
+ return mxl111sf_hw_gpio_initialize(state);
+ }
+}
+
+/* ------------------------------------------------------------------------ */
+
+int mxl111sf_gpio_mode_switch(struct mxl111sf_state *state, unsigned int mode)
+{
+/* GPO:
+ * 3 - ATSC/MH# | 1 = ATSC transport, 0 = MH transport | default 0
+ * 4 - ATSC_RST## | 1 = ATSC enable, 0 = ATSC Reset | default 0
+ * 5 - ATSC_EN | 1 = ATSC power enable, 0 = ATSC power off | default 0
+ * 6 - MH_RESET# | 1 = MH enable, 0 = MH Reset | default 0
+ * 7 - MH_EN | 1 = MH power enable, 0 = MH power off | default 0
+ */
+ mxl_debug("(%d)", mode);
+
+ switch (mode) {
+ case MXL111SF_GPIO_MOD_MH:
+ mxl111sf_set_gpio(state, 4, 0);
+ mxl111sf_set_gpio(state, 5, 0);
+ msleep(50);
+ mxl111sf_set_gpio(state, 7, 1);
+ msleep(50);
+ mxl111sf_set_gpio(state, 6, 1);
+ msleep(50);
+
+ mxl111sf_set_gpio(state, 3, 0);
+ break;
+ case MXL111SF_GPIO_MOD_ATSC:
+ mxl111sf_set_gpio(state, 6, 0);
+ mxl111sf_set_gpio(state, 7, 0);
+ msleep(50);
+ mxl111sf_set_gpio(state, 5, 1);
+ msleep(50);
+ mxl111sf_set_gpio(state, 4, 1);
+ msleep(50);
+ mxl111sf_set_gpio(state, 3, 1);
+ break;
+ default: /* DVBT / STANDBY */
+ mxl111sf_init_port_expander(state);
+ break;
+ }
+ return 0;
+}