X-Git-Url: http://git.rohieb.name/openwrt.git/blobdiff_plain/49662300d85d67ae95f60752f3391fa17aae5ea8..3a242b3d5130f55bb857dd319da895b19159e513:/target/linux/s3c24xx/files-2.6.30/drivers/mfd/glamo/glamo-spi-gpio.c diff --git a/target/linux/s3c24xx/files-2.6.30/drivers/mfd/glamo/glamo-spi-gpio.c b/target/linux/s3c24xx/files-2.6.30/drivers/mfd/glamo/glamo-spi-gpio.c deleted file mode 100644 index 6316b85d0..000000000 --- a/target/linux/s3c24xx/files-2.6.30/drivers/mfd/glamo/glamo-spi-gpio.c +++ /dev/null @@ -1,278 +0,0 @@ -/* - * Copyright (C) 2007 Openmoko, Inc. - * Author: Harald Welte - * - * Smedia Glamo GPIO based SPI driver - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This driver currently only implements a minimum subset of the hardware - * features, esp. those features that are required to drive the jbt6k74 - * LCM controller asic in the TD028TTEC1 LCM. - * -*/ - -#define DEBUG - -#include -#include -#include -#include -#include -#include - -#include -#include -#include - -#include - -#include - -#include "glamo-core.h" -#include "glamo-regs.h" - -struct glamo_spigpio { - struct spi_bitbang bitbang; - struct spi_master *master; - struct glamo_spigpio_platform_data *info; -}; - -static inline struct glamo_spigpio *to_sg(struct spi_device *spi) -{ - return dev_get_drvdata(&spi->master->dev); -} - -static inline void setsck(struct spi_device *dev, int on) -{ - struct glamo_spigpio *sg = to_sg(dev); - glamo_gpio_setpin(sg->info->core, sg->info->pin_clk, on ? 1 : 0); -} - -static inline void setmosi(struct spi_device *dev, int on) -{ - struct glamo_spigpio *sg = to_sg(dev); - glamo_gpio_setpin(sg->info->core, sg->info->pin_mosi, on ? 1 : 0); -} - -static inline u32 getmiso(struct spi_device *dev) -{ - struct glamo_spigpio *sg = to_sg(dev); - if (sg->info->pin_miso) - return glamo_gpio_getpin(sg->info->core, sg->info->pin_miso) ? 1 : 0; - else - return 0; -} - -#define spidelay(x) ndelay(x) - -#define EXPAND_BITBANG_TXRX -#include - -static u32 glamo_spigpio_txrx_mode0(struct spi_device *spi, - unsigned nsecs, u32 word, u8 bits) -{ - return bitbang_txrx_be_cpha0(spi, nsecs, 0, word, bits); -} - -static u32 glamo_spigpio_txrx_mode1(struct spi_device *spi, - unsigned nsecs, u32 word, u8 bits) -{ - return bitbang_txrx_be_cpha1(spi, nsecs, 0, word, bits); -} - -static u32 glamo_spigpio_txrx_mode2(struct spi_device *spi, - unsigned nsecs, u32 word, u8 bits) -{ - return bitbang_txrx_be_cpha0(spi, nsecs, 1, word, bits); -} - -static u32 glamo_spigpio_txrx_mode3(struct spi_device *spi, - unsigned nsecs, u32 word, u8 bits) -{ - return bitbang_txrx_be_cpha1(spi, nsecs, 1, word, bits); -} - - -#if 0 -static int glamo_spigpio_setupxfer(struct spi_device *spi, - struct spi_transfer *t) -{ - struct glamo_spi *gs = to_sg(spi); - unsigned int bpw; - - bpw = t ? t->bits_per_word : spi->bits_per_word; - - if (bpw != 9 && bpw != 8) { - dev_err(&spi->dev, "invalid bits-per-word (%d)\n", bpw); - return -EINVAL; - } - - return 0; -} -#endif - -static void glamo_spigpio_chipsel(struct spi_device *spi, int value) -{ - struct glamo_spigpio *gs = to_sg(spi); -#if 0 - dev_dbg(&spi->dev, "chipsel %d: spi=%p, gs=%p, info=%p, handle=%p\n", - value, spi, gs, gs->info, gs->info->glamo); -#endif - glamo_gpio_setpin(gs->info->core, gs->info->pin_cs, value ? 0 : 1); -} - - -static int glamo_spigpio_probe(struct platform_device *pdev) -{ - struct spi_master *master; - struct glamo_spigpio *sp; - int ret; - - master = spi_alloc_master(&pdev->dev, sizeof(struct glamo_spigpio)); - if (master == NULL) { - dev_err(&pdev->dev, "failed to allocate spi master\n"); - ret = -ENOMEM; - goto err; - } - - sp = spi_master_get_devdata(master); - platform_set_drvdata(pdev, sp); - sp->info = pdev->dev.platform_data; - if (!sp->info) { - dev_err(&pdev->dev, "can't operate without platform data\n"); - ret = -EIO; - goto err_no_pdev; - } - - master->num_chipselect = 1; - master->bus_num = 2; /* FIXME: use dynamic number */ - - sp->master = spi_master_get(master); - - sp->bitbang.master = sp->master; - sp->bitbang.chipselect = glamo_spigpio_chipsel; - sp->bitbang.txrx_word[SPI_MODE_0] = glamo_spigpio_txrx_mode0; - sp->bitbang.txrx_word[SPI_MODE_1] = glamo_spigpio_txrx_mode1; - sp->bitbang.txrx_word[SPI_MODE_2] = glamo_spigpio_txrx_mode2; - sp->bitbang.txrx_word[SPI_MODE_3] = glamo_spigpio_txrx_mode3; - - /* set state of spi pins */ - glamo_gpio_setpin(sp->info->core, sp->info->pin_clk, 0); - glamo_gpio_setpin(sp->info->core, sp->info->pin_mosi, 0); - glamo_gpio_setpin(sp->info->core, sp->info->pin_cs, 1); - - glamo_gpio_cfgpin(sp->info->core, sp->info->pin_clk); - glamo_gpio_cfgpin(sp->info->core, sp->info->pin_mosi); - glamo_gpio_cfgpin(sp->info->core, sp->info->pin_cs); - if (sp->info->pin_miso) - glamo_gpio_cfgpin(sp->info->core, sp->info->pin_miso); - - /* bring the LCM panel out of reset if it isn't already */ - - glamo_gpio_setpin(sp->info->core, GLAMO_GPIO4, 1); - glamo_gpio_cfgpin(sp->info->core, GLAMO_GPIO4_OUTPUT); - msleep(90); - -#if 0 - sp->dev = &pdev->dev; - - sp->bitbang.setup_transfer = glamo_spi_setupxfer; - sp->bitbang.txrx_bufs = glamo_spi_txrx; - sp->bitbang.master->setup = glamo_spi_setup; -#endif - - dev_set_drvdata(&sp->master->dev, sp); - - ret = spi_bitbang_start(&sp->bitbang); - if (ret) - goto err_no_bitbang; - - return 0; - -err_no_bitbang: - platform_set_drvdata(pdev, NULL); -err_no_pdev: - spi_master_put(sp->bitbang.master); -err: - return ret; - -} - -static int glamo_spigpio_remove(struct platform_device *pdev) -{ - struct glamo_spigpio *sp = platform_get_drvdata(pdev); - - spi_bitbang_stop(&sp->bitbang); - spi_master_put(sp->bitbang.master); - - return 0; -} - - -#ifdef CONFIG_PM -/*static int glamo_spigpio_suspend(struct device *dev) -{ - return 0; -}*/ - -static int glamo_spigpio_resume(struct device *dev) -{ - struct glamo_spigpio *sp = dev_get_drvdata(dev); - - if (!sp) - return 0; - - /* set state of spi pins */ - glamo_gpio_setpin(sp->info->core, sp->info->pin_clk, 0); - glamo_gpio_setpin(sp->info->core, sp->info->pin_mosi, 0); - glamo_gpio_setpin(sp->info->core, sp->info->pin_cs, 1); - - glamo_gpio_cfgpin(sp->info->core, sp->info->pin_clk); - glamo_gpio_cfgpin(sp->info->core, sp->info->pin_mosi); - glamo_gpio_cfgpin(sp->info->core, sp->info->pin_cs); - if (sp->info->pin_miso) - glamo_gpio_cfgpin(sp->info->core, sp->info->pin_miso); - - return 0; -} - -static struct dev_pm_ops glamo_spigpio_pm_ops = { -/* .suspend = glamo_spiogpio_suspend,*/ - .resume_noirq = glamo_spigpio_resume, -}; - -#define GLAMO_SPIGPIO_PM_OPS (&glamo_spigpio_pm_ops) - -#else -#define GLAMO_SPIGPIO_PM_OPS NULL -#endif - -static struct platform_driver glamo_spi_drv = { - .probe = glamo_spigpio_probe, - .remove = glamo_spigpio_remove, - .driver = { - .name = "glamo-spi-gpio", - .owner = THIS_MODULE, - .pm = GLAMO_SPIGPIO_PM_OPS, - }, -}; - -static int __init glamo_spi_init(void) -{ - return platform_driver_register(&glamo_spi_drv); -} - -static void __exit glamo_spi_exit(void) -{ - platform_driver_unregister(&glamo_spi_drv); -} - -module_init(glamo_spi_init); -module_exit(glamo_spi_exit); - -MODULE_DESCRIPTION("Smedia Glamo 336x/337x LCM serial command SPI Driver"); -MODULE_AUTHOR("Harald Welte ") -MODULE_LICENSE("GPL");