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path: root/drivers/staging/wilc1000/linux_wlan_spi.c
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Diffstat (limited to 'drivers/staging/wilc1000/linux_wlan_spi.c')
-rw-r--r--drivers/staging/wilc1000/linux_wlan_spi.c409
1 files changed, 0 insertions, 409 deletions
diff --git a/drivers/staging/wilc1000/linux_wlan_spi.c b/drivers/staging/wilc1000/linux_wlan_spi.c
deleted file mode 100644
index 039d06192d6b..000000000000
--- a/drivers/staging/wilc1000/linux_wlan_spi.c
+++ /dev/null
@@ -1,409 +0,0 @@
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/fs.h>
-#include <linux/slab.h>
-#include <linux/types.h>
-#include <linux/cdev.h>
-#include <linux/uaccess.h>
-#include <linux/device.h>
-#include <linux/spi/spi.h>
-
-#include "linux_wlan_common.h"
-#include "linux_wlan_spi.h"
-
-#define USE_SPI_DMA 0 /* johnny add */
-
-#ifdef WILC_ASIC_A0
- #if defined(PLAT_PANDA_ES_OMAP4460)
- #define MIN_SPEED 12000000
- #define MAX_SPEED 24000000
- #elif defined(PLAT_WMS8304)
- #define MIN_SPEED 12000000
- #define MAX_SPEED 24000000 /* 4000000 */
- #elif defined(CUSTOMER_PLATFORM)
-/*
- TODO : define Clock speed under 48M.
- *
- * ex)
- * #define MIN_SPEED 24000000
- * #define MAX_SPEED 48000000
- */
- #else
- #define MIN_SPEED 24000000
- #define MAX_SPEED 48000000
- #endif
-#else /* WILC_ASIC_A0 */
-/* Limit clk to 6MHz on FPGA. */
- #define MIN_SPEED 6000000
- #define MAX_SPEED 6000000
-#endif /* WILC_ASIC_A0 */
-
-static u32 SPEED = MIN_SPEED;
-
-struct spi_device *wilc_spi_dev;
-void linux_spi_deinit(void *vp);
-
-static int __init wilc_bus_probe(struct spi_device *spi)
-{
-
- PRINT_D(BUS_DBG, "spiModalias: %s\n", spi->modalias);
- PRINT_D(BUS_DBG, "spiMax-Speed: %d\n", spi->max_speed_hz);
- wilc_spi_dev = spi;
-
- printk("Driver Initializing success\n");
- return 0;
-}
-
-static int __exit wilc_bus_remove(struct spi_device *spi)
-{
-
- return 0;
-}
-
-#ifdef CONFIG_OF
-static const struct of_device_id wilc1000_of_match[] = {
- { .compatible = "atmel,wilc_spi", },
- {}
-};
-MODULE_DEVICE_TABLE(of, wilc1000_of_match);
-#endif
-
-struct spi_driver wilc_bus __refdata = {
- .driver = {
- .name = MODALIAS,
-#ifdef CONFIG_OF
- .of_match_table = wilc1000_of_match,
-#endif
- },
- .probe = wilc_bus_probe,
- .remove = __exit_p(wilc_bus_remove),
-};
-
-
-void linux_spi_deinit(void *vp)
-{
-
- spi_unregister_driver(&wilc_bus);
-
- SPEED = MIN_SPEED;
- PRINT_ER("@@@@@@@@@@@@ restore SPI speed to %d @@@@@@@@@\n", SPEED);
-
-}
-
-
-
-int linux_spi_init(void *vp)
-{
- int ret = 1;
- static int called;
-
-
- if (called == 0) {
- called++;
- ret = spi_register_driver(&wilc_bus);
- }
-
- /* change return value to match WILC interface */
- (ret < 0) ? (ret = 0) : (ret = 1);
-
- return ret;
-}
-
-#if defined(PLAT_WMS8304)
-#define TXRX_PHASE_SIZE (4096)
-#endif
-
-#if defined(TXRX_PHASE_SIZE)
-
-int linux_spi_write(u8 *b, u32 len)
-{
- int ret;
-
- if (len > 0 && b != NULL) {
- int i = 0;
- int blk = len / TXRX_PHASE_SIZE;
- int remainder = len % TXRX_PHASE_SIZE;
-
- char *r_buffer = kzalloc(TXRX_PHASE_SIZE, GFP_KERNEL);
- if (!r_buffer)
- return -ENOMEM;
-
- if (blk) {
- while (i < blk) {
- struct spi_message msg;
- struct spi_transfer tr = {
- .tx_buf = b + (i * TXRX_PHASE_SIZE),
- .len = TXRX_PHASE_SIZE,
- .speed_hz = SPEED,
- .bits_per_word = 8,
- .delay_usecs = 0,
- };
-
- tr.rx_buf = r_buffer;
-
- memset(&msg, 0, sizeof(msg));
- spi_message_init(&msg);
- msg.spi = wilc_spi_dev;
- msg.is_dma_mapped = USE_SPI_DMA;
-
- spi_message_add_tail(&tr, &msg);
- ret = spi_sync(wilc_spi_dev, &msg);
- if (ret < 0) {
- PRINT_ER("SPI transaction failed\n");
- }
- i++;
-
- }
- }
- if (remainder) {
- struct spi_message msg;
- struct spi_transfer tr = {
- .tx_buf = b + (blk * TXRX_PHASE_SIZE),
- .len = remainder,
- .speed_hz = SPEED,
- .bits_per_word = 8,
- .delay_usecs = 0,
- };
- tr.rx_buf = r_buffer;
-
- memset(&msg, 0, sizeof(msg));
- spi_message_init(&msg);
- msg.spi = wilc_spi_dev;
- msg.is_dma_mapped = USE_SPI_DMA; /* rachel */
-
- spi_message_add_tail(&tr, &msg);
- ret = spi_sync(wilc_spi_dev, &msg);
- if (ret < 0) {
- PRINT_ER("SPI transaction failed\n");
- }
- }
- kfree(r_buffer);
- } else {
- PRINT_ER("can't write data with the following length: %d\n", len);
- PRINT_ER("FAILED due to NULL buffer or ZERO length check the following length: %d\n", len);
- ret = -1;
- }
-
- /* change return value to match WILC interface */
- (ret < 0) ? (ret = 0) : (ret = 1);
-
- return ret;
-
-}
-
-#else
-int linux_spi_write(u8 *b, u32 len)
-{
-
- int ret;
- struct spi_message msg;
-
- if (len > 0 && b != NULL) {
- struct spi_transfer tr = {
- .tx_buf = b,
- .len = len,
- .speed_hz = SPEED,
- .delay_usecs = 0,
- };
- char *r_buffer = kzalloc(len, GFP_KERNEL);
- if (!r_buffer)
- return -ENOMEM;
-
- tr.rx_buf = r_buffer;
- PRINT_D(BUS_DBG, "Request writing %d bytes\n", len);
-
- memset(&msg, 0, sizeof(msg));
- spi_message_init(&msg);
-/* [[johnny add */
- msg.spi = wilc_spi_dev;
- msg.is_dma_mapped = USE_SPI_DMA;
-/* ]] */
- spi_message_add_tail(&tr, &msg);
-
- ret = spi_sync(wilc_spi_dev, &msg);
- if (ret < 0) {
- PRINT_ER("SPI transaction failed\n");
- }
-
- kfree(r_buffer);
- } else {
- PRINT_ER("can't write data with the following length: %d\n", len);
- PRINT_ER("FAILED due to NULL buffer or ZERO length check the following length: %d\n", len);
- ret = -1;
- }
-
- /* change return value to match WILC interface */
- (ret < 0) ? (ret = 0) : (ret = 1);
-
-
- return ret;
-}
-
-#endif
-
-#if defined(TXRX_PHASE_SIZE)
-
-int linux_spi_read(u8 *rb, u32 rlen)
-{
- int ret;
-
- if (rlen > 0) {
- int i = 0;
-
- int blk = rlen / TXRX_PHASE_SIZE;
- int remainder = rlen % TXRX_PHASE_SIZE;
-
- char *t_buffer = kzalloc(TXRX_PHASE_SIZE, GFP_KERNEL);
- if (!t_buffer)
- return -ENOMEM;
-
- if (blk) {
- while (i < blk) {
- struct spi_message msg;
- struct spi_transfer tr = {
- .rx_buf = rb + (i * TXRX_PHASE_SIZE),
- .len = TXRX_PHASE_SIZE,
- .speed_hz = SPEED,
- .bits_per_word = 8,
- .delay_usecs = 0,
- };
- tr.tx_buf = t_buffer;
-
- memset(&msg, 0, sizeof(msg));
- spi_message_init(&msg);
- msg.spi = wilc_spi_dev;
- msg.is_dma_mapped = USE_SPI_DMA;
-
- spi_message_add_tail(&tr, &msg);
- ret = spi_sync(wilc_spi_dev, &msg);
- if (ret < 0) {
- PRINT_ER("SPI transaction failed\n");
- }
- i++;
- }
- }
- if (remainder) {
- struct spi_message msg;
- struct spi_transfer tr = {
- .rx_buf = rb + (blk * TXRX_PHASE_SIZE),
- .len = remainder,
- .speed_hz = SPEED,
- .bits_per_word = 8,
- .delay_usecs = 0,
- };
- tr.tx_buf = t_buffer;
-
- memset(&msg, 0, sizeof(msg));
- spi_message_init(&msg);
- msg.spi = wilc_spi_dev;
- msg.is_dma_mapped = USE_SPI_DMA; /* rachel */
-
- spi_message_add_tail(&tr, &msg);
- ret = spi_sync(wilc_spi_dev, &msg);
- if (ret < 0) {
- PRINT_ER("SPI transaction failed\n");
- }
- }
-
- kfree(t_buffer);
- } else {
- PRINT_ER("can't read data with the following length: %u\n", rlen);
- ret = -1;
- }
- /* change return value to match WILC interface */
- (ret < 0) ? (ret = 0) : (ret = 1);
-
- return ret;
-}
-
-#else
-int linux_spi_read(u8 *rb, u32 rlen)
-{
-
- int ret;
-
- if (rlen > 0) {
- struct spi_message msg;
- struct spi_transfer tr = {
- .rx_buf = rb,
- .len = rlen,
- .speed_hz = SPEED,
- .delay_usecs = 0,
-
- };
- char *t_buffer = kzalloc(rlen, GFP_KERNEL);
- if (!t_buffer)
- return -ENOMEM;
-
- tr.tx_buf = t_buffer;
-
- memset(&msg, 0, sizeof(msg));
- spi_message_init(&msg);
-/* [[ johnny add */
- msg.spi = wilc_spi_dev;
- msg.is_dma_mapped = USE_SPI_DMA;
-/* ]] */
- spi_message_add_tail(&tr, &msg);
-
- ret = spi_sync(wilc_spi_dev, &msg);
- if (ret < 0) {
- PRINT_ER("SPI transaction failed\n");
- }
- kfree(t_buffer);
- } else {
- PRINT_ER("can't read data with the following length: %u\n", rlen);
- ret = -1;
- }
- /* change return value to match WILC interface */
- (ret < 0) ? (ret = 0) : (ret = 1);
-
- return ret;
-}
-
-#endif
-
-int linux_spi_write_read(u8 *wb, u8 *rb, u32 rlen)
-{
-
- int ret;
-
- if (rlen > 0) {
- struct spi_message msg;
- struct spi_transfer tr = {
- .rx_buf = rb,
- .tx_buf = wb,
- .len = rlen,
- .speed_hz = SPEED,
- .bits_per_word = 8,
- .delay_usecs = 0,
-
- };
-
- memset(&msg, 0, sizeof(msg));
- spi_message_init(&msg);
- msg.spi = wilc_spi_dev;
- msg.is_dma_mapped = USE_SPI_DMA;
-
- spi_message_add_tail(&tr, &msg);
- ret = spi_sync(wilc_spi_dev, &msg);
- if (ret < 0) {
- PRINT_ER("SPI transaction failed\n");
- }
- } else {
- PRINT_ER("can't read data with the following length: %u\n", rlen);
- ret = -1;
- }
- /* change return value to match WILC interface */
- (ret < 0) ? (ret = 0) : (ret = 1);
-
- return ret;
-}
-
-int linux_spi_set_max_speed(void)
-{
- SPEED = MAX_SPEED;
-
- PRINT_INFO(BUS_DBG, "@@@@@@@@@@@@ change SPI speed to %d @@@@@@@@@\n", SPEED);
- return 1;
-}
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