acb0cd65ca
Make driver generic for multiple ILI displays. The adopted strategy is to share all driver code except register initialization, which has been found to have some specific registers/values depending on the controller. The driver has been adjusted to support multiple compatibles. Signed-off-by: Gerard Marull-Paretas <gerard@teslabs.com>
74 lines
2.4 KiB
C
74 lines
2.4 KiB
C
/*
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* Copyright (c) 2020 Teslabs Engineering S.L.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef ZEPHYR_DRIVERS_DISPLAY_DISPLAY_ILI9340_H_
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#define ZEPHYR_DRIVERS_DISPLAY_DISPLAY_ILI9340_H_
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#include <device.h>
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/* Commands/registers. */
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#define ILI9340_GAMSET 0x26
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#define ILI9340_FRMCTR1 0xB1
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#define ILI9340_DISCTRL 0xB6
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#define ILI9340_PWCTRL1 0xC0
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#define ILI9340_PWCTRL2 0xC1
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#define ILI9340_VMCTRL1 0xC5
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#define ILI9340_VMCTRL2 0xC7
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#define ILI9340_PGAMCTRL 0xE0
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#define ILI9340_NGAMCTRL 0xE1
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/* Commands/registers length. */
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#define ILI9340_GAMSET_LEN 1U
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#define ILI9340_FRMCTR1_LEN 2U
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#define ILI9340_DISCTRL_LEN 3U
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#define ILI9340_PWCTRL1_LEN 2U
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#define ILI9340_PWCTRL2_LEN 1U
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#define ILI9340_VMCTRL1_LEN 2U
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#define ILI9340_VMCTRL2_LEN 1U
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#define ILI9340_PGAMCTRL_LEN 15U
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#define ILI9340_NGAMCTRL_LEN 15U
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/** X resolution (pixels). */
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#define ILI9340_X_RES 240U
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/** Y resolution (pixels). */
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#define ILI9340_Y_RES 320U
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/** ILI9340 registers to be initialized. */
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struct ili9340_regs {
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uint8_t gamset[ILI9340_GAMSET_LEN];
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uint8_t frmctr1[ILI9340_FRMCTR1_LEN];
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uint8_t disctrl[ILI9340_DISCTRL_LEN];
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uint8_t pwctrl1[ILI9340_PWCTRL1_LEN];
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uint8_t pwctrl2[ILI9340_PWCTRL2_LEN];
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uint8_t vmctrl1[ILI9340_VMCTRL1_LEN];
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uint8_t vmctrl2[ILI9340_VMCTRL2_LEN];
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uint8_t pgamctrl[ILI9340_PGAMCTRL_LEN];
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uint8_t ngamctrl[ILI9340_NGAMCTRL_LEN];
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};
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/* Initializer macro for ILI9340 registers. */
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#define ILI9340_REGS_INIT(n) \
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static const struct ili9340_regs ili9xxx_regs_##n = { \
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.gamset = DT_PROP(DT_INST(n, ilitek_ili9340), gamset), \
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.frmctr1 = DT_PROP(DT_INST(n, ilitek_ili9340), frmctr1), \
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.disctrl = DT_PROP(DT_INST(n, ilitek_ili9340), disctrl), \
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.pwctrl1 = DT_PROP(DT_INST(n, ilitek_ili9340), pwctrl1), \
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.pwctrl2 = DT_PROP(DT_INST(n, ilitek_ili9340), pwctrl2), \
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.vmctrl1 = DT_PROP(DT_INST(n, ilitek_ili9340), vmctrl1), \
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.vmctrl2 = DT_PROP(DT_INST(n, ilitek_ili9340), vmctrl2), \
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.pgamctrl = DT_PROP(DT_INST(n, ilitek_ili9340), pgamctrl), \
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.ngamctrl = DT_PROP(DT_INST(n, ilitek_ili9340), ngamctrl), \
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}
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/**
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* @brief Initialize ILI9340 registers with DT values.
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*
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* @param dev ILI9340 device instance
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* @return 0 on success, errno otherwise.
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*/
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int ili9340_regs_init(const struct device *dev);
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#endif /* ZEPHYR_DRIVERS_DISPLAY_DISPLAY_ILI9340_H_ */
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