diff options
Diffstat (limited to 'drivers/staging/msm/mddihost.c')
| -rw-r--r-- | drivers/staging/msm/mddihost.c | 377 |
1 files changed, 377 insertions, 0 deletions
diff --git a/drivers/staging/msm/mddihost.c b/drivers/staging/msm/mddihost.c new file mode 100644 index 00000000000..c6c1ee4eda0 --- /dev/null +++ b/drivers/staging/msm/mddihost.c @@ -0,0 +1,377 @@ +/* Copyright (c) 2008-2009, Code Aurora Forum. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/delay.h> +#include <linux/mm.h> +#include <linux/fb.h> +#include <linux/init.h> +#include <linux/ioport.h> +#include <linux/device.h> +#include <linux/dma-mapping.h> + +#include "msm_fb.h" +#include "mddihost.h" +#include "mddihosti.h" + +#include <linux/clk.h> +#include <mach/clk.h> + +struct semaphore mddi_host_mutex; + +struct clk *mddi_io_clk; +static boolean mddi_host_powered = FALSE; +static boolean mddi_host_initialized = FALSE; +extern uint32 *mddi_reg_read_value_ptr; + +mddi_lcd_func_type mddi_lcd; + +extern mddi_client_capability_type mddi_client_capability_pkt; + +#ifdef FEATURE_MDDI_HITACHI +extern void mddi_hitachi_window_adjust(uint16 x1, + uint16 x2, uint16 y1, uint16 y2); +#endif + +extern void mddi_toshiba_lcd_init(void); + +#ifdef FEATURE_MDDI_S6D0142 +extern void mddi_s6d0142_lcd_init(void); +extern void mddi_s6d0142_window_adjust(uint16 x1, + uint16 x2, + uint16 y1, + uint16 y2, + mddi_llist_done_cb_type done_cb); +#endif + +void mddi_init(void) +{ + if (mddi_host_initialized) + return; + + mddi_host_initialized = TRUE; + + init_MUTEX(&mddi_host_mutex); + + if (!mddi_host_powered) { + down(&mddi_host_mutex); + mddi_host_init(MDDI_HOST_PRIM); + mddi_host_powered = TRUE; + up(&mddi_host_mutex); + mdelay(10); + } +} + +int mddi_host_register_read(uint32 reg_addr, + uint32 *reg_value_ptr, boolean wait, mddi_host_type host) { + mddi_linked_list_type *curr_llist_ptr; + mddi_register_access_packet_type *regacc_pkt_ptr; + uint16 curr_llist_idx; + int ret = 0; + + if (in_interrupt()) + MDDI_MSG_CRIT("Called from ISR context\n"); + + if (!mddi_host_powered) { + MDDI_MSG_ERR("MDDI powered down!\n"); + mddi_init(); + } + + down(&mddi_host_mutex); + + mddi_reg_read_value_ptr = reg_value_ptr; + curr_llist_idx = mddi_get_reg_read_llist_item(host, TRUE); + if (curr_llist_idx == UNASSIGNED_INDEX) { + up(&mddi_host_mutex); + + /* need to change this to some sort of wait */ + MDDI_MSG_ERR("Attempting to queue up more than 1 reg read\n"); + return -EINVAL; + } + + curr_llist_ptr = &llist_extern[host][curr_llist_idx]; + curr_llist_ptr->link_controller_flags = 0x11; + curr_llist_ptr->packet_header_count = 14; + curr_llist_ptr->packet_data_count = 0; + + curr_llist_ptr->next_packet_pointer = NULL; + curr_llist_ptr->packet_data_pointer = NULL; + curr_llist_ptr->reserved = 0; + + regacc_pkt_ptr = &curr_llist_ptr->packet_header.register_pkt; + + regacc_pkt_ptr->packet_length = curr_llist_ptr->packet_header_count; + regacc_pkt_ptr->packet_type = 146; /* register access packet */ + regacc_pkt_ptr->bClient_ID = 0; + regacc_pkt_ptr->read_write_info = 0x8001; + regacc_pkt_ptr->register_address = reg_addr; + + /* now adjust pointers */ + mddi_queue_forward_packets(curr_llist_idx, curr_llist_idx, wait, + NULL, host); + /* need to check if we can write the pointer or not */ + + up(&mddi_host_mutex); + + if (wait) { + int wait_ret; + + mddi_linked_list_notify_type *llist_notify_ptr; + llist_notify_ptr = &llist_extern_notify[host][curr_llist_idx]; + wait_ret = wait_for_completion_timeout( + &(llist_notify_ptr->done_comp), 5 * HZ); + + if (wait_ret <= 0) + ret = -EBUSY; + + if (wait_ret < 0) + printk(KERN_ERR "%s: failed to wait for completion!\n", + __func__); + else if (!wait_ret) + printk(KERN_ERR "%s: Timed out waiting!\n", __func__); + } + + MDDI_MSG_DEBUG("Reg Read value=0x%x\n", *reg_value_ptr); + + return ret; +} /* mddi_host_register_read */ + +int mddi_host_register_write(uint32 reg_addr, + uint32 reg_val, enum mddi_data_packet_size_type packet_size, + boolean wait, mddi_llist_done_cb_type done_cb, mddi_host_type host) { + mddi_linked_list_type *curr_llist_ptr; + mddi_linked_list_type *curr_llist_dma_ptr; + mddi_register_access_packet_type *regacc_pkt_ptr; + uint16 curr_llist_idx; + int ret = 0; + + if (in_interrupt()) + MDDI_MSG_CRIT("Called from ISR context\n"); + + if (!mddi_host_powered) { + MDDI_MSG_ERR("MDDI powered down!\n"); + mddi_init(); + } + + down(&mddi_host_mutex); + + curr_llist_idx = mddi_get_next_free_llist_item(host, TRUE); + curr_llist_ptr = &llist_extern[host][curr_llist_idx]; + curr_llist_dma_ptr = &llist_dma_extern[host][curr_llist_idx]; + + curr_llist_ptr->link_controller_flags = 1; + curr_llist_ptr->packet_header_count = 14; + curr_llist_ptr->packet_data_count = 4; + + curr_llist_ptr->next_packet_pointer = NULL; + curr_llist_ptr->reserved = 0; + + regacc_pkt_ptr = &curr_llist_ptr->packet_header.register_pkt; + + regacc_pkt_ptr->packet_length = curr_llist_ptr->packet_header_count + + (uint16)packet_size; + regacc_pkt_ptr->packet_type = 146; /* register access packet */ + regacc_pkt_ptr->bClient_ID = 0; + regacc_pkt_ptr->read_write_info = 0x0001; + regacc_pkt_ptr->register_address = reg_addr; + regacc_pkt_ptr->register_data_list = reg_val; + + MDDI_MSG_DEBUG("Reg Access write reg=0x%x, value=0x%x\n", + regacc_pkt_ptr->register_address, + regacc_pkt_ptr->register_data_list); + + regacc_pkt_ptr = &curr_llist_dma_ptr->packet_header.register_pkt; + curr_llist_ptr->packet_data_pointer = + (void *)(®acc_pkt_ptr->register_data_list); + + /* now adjust pointers */ + mddi_queue_forward_packets(curr_llist_idx, curr_llist_idx, wait, + done_cb, host); + + up(&mddi_host_mutex); + + if (wait) { + int wait_ret; + + mddi_linked_list_notify_type *llist_notify_ptr; + llist_notify_ptr = &llist_extern_notify[host][curr_llist_idx]; + wait_ret = wait_for_completion_timeout( + &(llist_notify_ptr->done_comp), 5 * HZ); + + if (wait_ret <= 0) + ret = -EBUSY; + + if (wait_ret < 0) + printk(KERN_ERR "%s: failed to wait for completion!\n", + __func__); + else if (!wait_ret) + printk(KERN_ERR "%s: Timed out waiting!\n", __func__); + } + + return ret; +} /* mddi_host_register_write */ + +boolean mddi_host_register_read_int + (uint32 reg_addr, uint32 *reg_value_ptr, mddi_host_type host) { + mddi_linked_list_type *curr_llist_ptr; + mddi_register_access_packet_type *regacc_pkt_ptr; + uint16 curr_llist_idx; + + if (!in_interrupt()) + MDDI_MSG_CRIT("Called from TASK context\n"); + + if (!mddi_host_powered) { + MDDI_MSG_ERR("MDDI powered down!\n"); + return FALSE; + } + + if (down_trylock(&mddi_host_mutex) != 0) + return FALSE; + + mddi_reg_read_value_ptr = reg_value_ptr; + curr_llist_idx = mddi_get_reg_read_llist_item(host, FALSE); + if (curr_llist_idx == UNASSIGNED_INDEX) { + up(&mddi_host_mutex); + return FALSE; + } + + curr_llist_ptr = &llist_extern[host][curr_llist_idx]; + curr_llist_ptr->link_controller_flags = 0x11; + curr_llist_ptr->packet_header_count = 14; + curr_llist_ptr->packet_data_count = 0; + + curr_llist_ptr->next_packet_pointer = NULL; + curr_llist_ptr->packet_data_pointer = NULL; + curr_llist_ptr->reserved = 0; + + regacc_pkt_ptr = &curr_llist_ptr->packet_header.register_pkt; + + regacc_pkt_ptr->packet_length = curr_llist_ptr->packet_header_count; + regacc_pkt_ptr->packet_type = 146; /* register access packet */ + regacc_pkt_ptr->bClient_ID = 0; + regacc_pkt_ptr->read_write_info = 0x8001; + regacc_pkt_ptr->register_address = reg_addr; + + /* now adjust pointers */ + mddi_queue_forward_packets(curr_llist_idx, curr_llist_idx, FALSE, + NULL, host); + /* need to check if we can write the pointer or not */ + + up(&mddi_host_mutex); + + return TRUE; + +} /* mddi_host_register_read */ + +boolean mddi_host_register_write_int + (uint32 reg_addr, + uint32 reg_val, mddi_llist_done_cb_type done_cb, mddi_host_type host) { + mddi_linked_list_type *curr_llist_ptr; + mddi_linked_list_type *curr_llist_dma_ptr; + mddi_register_access_packet_type *regacc_pkt_ptr; + uint16 curr_llist_idx; + + if (!in_interrupt()) + MDDI_MSG_CRIT("Called from TASK context\n"); + + if (!mddi_host_powered) { + MDDI_MSG_ERR("MDDI powered down!\n"); + return FALSE; + } + + if (down_trylock(&mddi_host_mutex) != 0) + return FALSE; + + curr_llist_idx = mddi_get_next_free_llist_item(host, FALSE); + if (curr_llist_idx == UNASSIGNED_INDEX) { + up(&mddi_host_mutex); + return FALSE; + } + + curr_llist_ptr = &llist_extern[host][curr_llist_idx]; + curr_llist_dma_ptr = &llist_dma_extern[host][curr_llist_idx]; + + curr_llist_ptr->link_controller_flags = 1; + curr_llist_ptr->packet_header_count = 14; + curr_llist_ptr->packet_data_count = 4; + + curr_llist_ptr->next_packet_pointer = NULL; + curr_llist_ptr->reserved = 0; + + regacc_pkt_ptr = &curr_llist_ptr->packet_header.register_pkt; + + regacc_pkt_ptr->packet_length = curr_llist_ptr->packet_header_count + 4; + regacc_pkt_ptr->packet_type = 146; /* register access packet */ + regacc_pkt_ptr->bClient_ID = 0; + regacc_pkt_ptr->read_write_info = 0x0001; + regacc_pkt_ptr->register_address = reg_addr; + regacc_pkt_ptr->register_data_list = reg_val; + + regacc_pkt_ptr = &curr_llist_dma_ptr->packet_header.register_pkt; + curr_llist_ptr->packet_data_pointer = + (void *)(&(regacc_pkt_ptr->register_data_list)); + + /* now adjust pointers */ + mddi_queue_forward_packets(curr_llist_idx, curr_llist_idx, FALSE, + done_cb, host); + up(&mddi_host_mutex); + + return TRUE; + +} /* mddi_host_register_write */ + +void mddi_wait(uint16 time_ms) +{ + mdelay(time_ms); +} + +void mddi_client_lcd_vsync_detected(boolean detected) +{ + if (mddi_lcd.vsync_detected) + (*mddi_lcd.vsync_detected) (detected); +} + +/* extended version of function includes done callback */ +void mddi_window_adjust_ext(struct msm_fb_data_type *mfd, + uint16 x1, + uint16 x2, + uint16 y1, + uint16 y2, mddi_llist_done_cb_type done_cb) +{ +#ifdef FEATURE_MDDI_HITACHI + if (mfd->panel.id == HITACHI) + mddi_hitachi_window_adjust(x1, x2, y1, y2); +#elif defined(FEATURE_MDDI_S6D0142) + if (mfd->panel.id == MDDI_LCD_S6D0142) + mddi_s6d0142_window_adjust(x1, x2, y1, y2, done_cb); +#else + /* Do nothing then... except avoid lint/compiler warnings */ + (void)x1; + (void)x2; + (void)y1; + (void)y2; + (void)done_cb; +#endif +} + +void mddi_window_adjust(struct msm_fb_data_type *mfd, + uint16 x1, uint16 x2, uint16 y1, uint16 y2) +{ + mddi_window_adjust_ext(mfd, x1, x2, y1, y2, NULL); +} |