fbdev: bf537-lq035: new Blackfin Sharp LQ035 framebuffer driver
For LCDs hooked up to BF537-STAMP boards. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Michael Hennerich
Paul Mundt
parent
fe040be2fd
commit
dbcc465a3c
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@ -643,6 +643,20 @@ config FB_BFIN_LQ035Q1
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To compile this driver as a module, choose M here: the
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module will be called bfin-lq035q1-fb.
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config FB_BF537_LQ035
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tristate "SHARP LQ035 TFT LCD (BF537 STAMP)"
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depends on FB && (BF534 || BF536 || BF537) && I2C_BLACKFIN_TWI
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select FB_CFB_FILLRECT
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select FB_CFB_COPYAREA
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select FB_CFB_IMAGEBLIT
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select BFIN_GPTIMERS
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help
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This is the framebuffer device for a SHARP LQ035Q7DB03 TFT LCD
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attached to a BF537.
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To compile this driver as a module, choose M here: the
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module will be called bf537-lq035.
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config FB_STI
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tristate "HP STI frame buffer device support"
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depends on FB && PARISC
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@ -144,6 +144,7 @@ obj-$(CONFIG_FB_VESA) += vesafb.o
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obj-$(CONFIG_FB_EFI) += efifb.o
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obj-$(CONFIG_FB_VGA16) += vga16fb.o
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obj-$(CONFIG_FB_OF) += offb.o
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obj-$(CONFIG_FB_BF537_LQ035) += bf537-lq035.o
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obj-$(CONFIG_FB_BF54X_LQ043) += bf54x-lq043fb.o
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obj-$(CONFIG_FB_BFIN_LQ035Q1) += bfin-lq035q1-fb.o
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obj-$(CONFIG_FB_BFIN_T350MCQB) += bfin-t350mcqb-fb.o
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914
drivers/video/bf537-lq035.c
Normal file
914
drivers/video/bf537-lq035.c
Normal file
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@ -0,0 +1,914 @@
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/*
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* Analog Devices Blackfin(BF537 STAMP) + SHARP TFT LCD.
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* http://docs.blackfin.uclinux.org/doku.php?id=hw:cards:tft-lcd
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*
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* Copyright 2006-2010 Analog Devices Inc.
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* Licensed under the GPL-2.
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/string.h>
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#include <linux/mm.h>
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#include <linux/delay.h>
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#include <linux/fb.h>
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#include <linux/ioport.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/gpio.h>
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#include <linux/interrupt.h>
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#include <linux/sched.h>
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#include <linux/timer.h>
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#include <linux/device.h>
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#include <linux/backlight.h>
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#include <linux/lcd.h>
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#include <linux/i2c.h>
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#include <linux/spinlock.h>
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#include <linux/dma-mapping.h>
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#include <linux/slab.h>
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#include <linux/platform_device.h>
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#include <asm/blackfin.h>
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#include <asm/irq.h>
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#include <asm/dpmc.h>
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#include <asm/dma.h>
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#include <asm/portmux.h>
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#define NO_BL 1
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#define MAX_BRIGHENESS 95
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#define MIN_BRIGHENESS 5
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#define NBR_PALETTE 256
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static const unsigned short ppi_pins[] = {
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P_PPI0_CLK, P_PPI0_D0, P_PPI0_D1, P_PPI0_D2, P_PPI0_D3,
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P_PPI0_D4, P_PPI0_D5, P_PPI0_D6, P_PPI0_D7,
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P_PPI0_D8, P_PPI0_D9, P_PPI0_D10, P_PPI0_D11,
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P_PPI0_D12, P_PPI0_D13, P_PPI0_D14, P_PPI0_D15, 0
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};
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static unsigned char *fb_buffer; /* RGB Buffer */
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static unsigned long *dma_desc_table;
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static int t_conf_done, lq035_open_cnt;
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static DEFINE_SPINLOCK(bfin_lq035_lock);
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static int landscape;
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module_param(landscape, int, 0);
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MODULE_PARM_DESC(landscape,
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"LANDSCAPE use 320x240 instead of Native 240x320 Resolution");
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static int bgr;
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module_param(bgr, int, 0);
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MODULE_PARM_DESC(bgr,
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"BGR use 16-bit BGR-565 instead of RGB-565");
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static int nocursor = 1;
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module_param(nocursor, int, 0644);
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MODULE_PARM_DESC(nocursor, "cursor enable/disable");
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static unsigned long current_brightness; /* backlight */
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/* AD5280 vcomm */
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static unsigned char vcomm_value = 150;
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static struct i2c_client *ad5280_client;
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static void set_vcomm(void)
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{
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int nr;
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if (!ad5280_client)
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return;
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nr = i2c_smbus_write_byte_data(ad5280_client, 0x00, vcomm_value);
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if (nr)
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pr_err("i2c_smbus_write_byte_data fail: %d\n", nr);
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}
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static int __devinit ad5280_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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int ret;
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if (!i2c_check_functionality(client->adapter,
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I2C_FUNC_SMBUS_BYTE_DATA)) {
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dev_err(&client->dev, "SMBUS Byte Data not Supported\n");
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return -EIO;
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}
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ret = i2c_smbus_write_byte_data(client, 0x00, vcomm_value);
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if (ret) {
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dev_err(&client->dev, "write fail: %d\n", ret);
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return ret;
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}
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ad5280_client = client;
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return 0;
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}
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static int __devexit ad5280_remove(struct i2c_client *client)
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{
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ad5280_client = NULL;
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return 0;
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}
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static const struct i2c_device_id ad5280_id[] = {
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{"bf537-lq035-ad5280", 0},
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{}
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};
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MODULE_DEVICE_TABLE(i2c, ad5280_id);
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static struct i2c_driver ad5280_driver = {
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.driver = {
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.name = "bf537-lq035-ad5280",
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},
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.probe = ad5280_probe,
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.remove = __devexit_p(ad5280_remove),
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.id_table = ad5280_id,
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};
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#ifdef CONFIG_PNAV10
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#define MOD GPIO_PH13
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#define bfin_write_TIMER_LP_CONFIG bfin_write_TIMER0_CONFIG
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#define bfin_write_TIMER_LP_WIDTH bfin_write_TIMER0_WIDTH
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#define bfin_write_TIMER_LP_PERIOD bfin_write_TIMER0_PERIOD
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#define bfin_read_TIMER_LP_COUNTER bfin_read_TIMER0_COUNTER
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#define TIMDIS_LP TIMDIS0
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#define TIMEN_LP TIMEN0
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#define bfin_write_TIMER_SPS_CONFIG bfin_write_TIMER1_CONFIG
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#define bfin_write_TIMER_SPS_WIDTH bfin_write_TIMER1_WIDTH
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#define bfin_write_TIMER_SPS_PERIOD bfin_write_TIMER1_PERIOD
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#define TIMDIS_SPS TIMDIS1
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#define TIMEN_SPS TIMEN1
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#define bfin_write_TIMER_SP_CONFIG bfin_write_TIMER5_CONFIG
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#define bfin_write_TIMER_SP_WIDTH bfin_write_TIMER5_WIDTH
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#define bfin_write_TIMER_SP_PERIOD bfin_write_TIMER5_PERIOD
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#define TIMDIS_SP TIMDIS5
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#define TIMEN_SP TIMEN5
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#define bfin_write_TIMER_PS_CLS_CONFIG bfin_write_TIMER2_CONFIG
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#define bfin_write_TIMER_PS_CLS_WIDTH bfin_write_TIMER2_WIDTH
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#define bfin_write_TIMER_PS_CLS_PERIOD bfin_write_TIMER2_PERIOD
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#define TIMDIS_PS_CLS TIMDIS2
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#define TIMEN_PS_CLS TIMEN2
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#define bfin_write_TIMER_REV_CONFIG bfin_write_TIMER3_CONFIG
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#define bfin_write_TIMER_REV_WIDTH bfin_write_TIMER3_WIDTH
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#define bfin_write_TIMER_REV_PERIOD bfin_write_TIMER3_PERIOD
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#define TIMDIS_REV TIMDIS3
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#define TIMEN_REV TIMEN3
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#define bfin_read_TIMER_REV_COUNTER bfin_read_TIMER3_COUNTER
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#define FREQ_PPI_CLK (5*1024*1024) /* PPI_CLK 5MHz */
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#define TIMERS {P_TMR0, P_TMR1, P_TMR2, P_TMR3, P_TMR5, 0}
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#else
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#define UD GPIO_PF13 /* Up / Down */
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#define MOD GPIO_PF10
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#define LBR GPIO_PF14 /* Left Right */
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#define bfin_write_TIMER_LP_CONFIG bfin_write_TIMER6_CONFIG
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#define bfin_write_TIMER_LP_WIDTH bfin_write_TIMER6_WIDTH
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#define bfin_write_TIMER_LP_PERIOD bfin_write_TIMER6_PERIOD
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#define bfin_read_TIMER_LP_COUNTER bfin_read_TIMER6_COUNTER
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#define TIMDIS_LP TIMDIS6
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#define TIMEN_LP TIMEN6
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#define bfin_write_TIMER_SPS_CONFIG bfin_write_TIMER1_CONFIG
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#define bfin_write_TIMER_SPS_WIDTH bfin_write_TIMER1_WIDTH
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#define bfin_write_TIMER_SPS_PERIOD bfin_write_TIMER1_PERIOD
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#define TIMDIS_SPS TIMDIS1
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#define TIMEN_SPS TIMEN1
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#define bfin_write_TIMER_SP_CONFIG bfin_write_TIMER0_CONFIG
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#define bfin_write_TIMER_SP_WIDTH bfin_write_TIMER0_WIDTH
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#define bfin_write_TIMER_SP_PERIOD bfin_write_TIMER0_PERIOD
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#define TIMDIS_SP TIMDIS0
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#define TIMEN_SP TIMEN0
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#define bfin_write_TIMER_PS_CLS_CONFIG bfin_write_TIMER7_CONFIG
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#define bfin_write_TIMER_PS_CLS_WIDTH bfin_write_TIMER7_WIDTH
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#define bfin_write_TIMER_PS_CLS_PERIOD bfin_write_TIMER7_PERIOD
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#define TIMDIS_PS_CLS TIMDIS7
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#define TIMEN_PS_CLS TIMEN7
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#define bfin_write_TIMER_REV_CONFIG bfin_write_TIMER5_CONFIG
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#define bfin_write_TIMER_REV_WIDTH bfin_write_TIMER5_WIDTH
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#define bfin_write_TIMER_REV_PERIOD bfin_write_TIMER5_PERIOD
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#define TIMDIS_REV TIMDIS5
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#define TIMEN_REV TIMEN5
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#define bfin_read_TIMER_REV_COUNTER bfin_read_TIMER5_COUNTER
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#define FREQ_PPI_CLK (6*1000*1000) /* PPI_CLK 6MHz */
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#define TIMERS {P_TMR0, P_TMR1, P_TMR5, P_TMR6, P_TMR7, 0}
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#endif
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#define LCD_X_RES 240 /* Horizontal Resolution */
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#define LCD_Y_RES 320 /* Vertical Resolution */
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#define LCD_BBP 16 /* Bit Per Pixel */
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/* the LCD and the DMA start counting differently;
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* since one starts at 0 and the other starts at 1,
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* we have a difference of 1 between START_LINES
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* and U_LINES.
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*/
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#define START_LINES 8 /* lines for field flyback or field blanking signal */
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#define U_LINES 9 /* number of undisplayed blanking lines */
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#define FRAMES_PER_SEC (60)
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#define DCLKS_PER_FRAME (FREQ_PPI_CLK/FRAMES_PER_SEC)
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#define DCLKS_PER_LINE (DCLKS_PER_FRAME/(LCD_Y_RES+U_LINES))
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#define PPI_CONFIG_VALUE (PORT_DIR|XFR_TYPE|DLEN_16|POLS)
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#define PPI_DELAY_VALUE (0)
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#define TIMER_CONFIG (PWM_OUT|PERIOD_CNT|TIN_SEL|CLK_SEL)
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#define ACTIVE_VIDEO_MEM_OFFSET (LCD_X_RES*START_LINES*(LCD_BBP/8))
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#define ACTIVE_VIDEO_MEM_SIZE (LCD_Y_RES*LCD_X_RES*(LCD_BBP/8))
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#define TOTAL_VIDEO_MEM_SIZE ((LCD_Y_RES+U_LINES)*LCD_X_RES*(LCD_BBP/8))
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#define TOTAL_DMA_DESC_SIZE (2 * sizeof(u32) * (LCD_Y_RES + U_LINES))
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static void start_timers(void) /* CHECK with HW */
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{
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unsigned long flags;
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local_irq_save(flags);
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bfin_write_TIMER_ENABLE(TIMEN_REV);
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SSYNC();
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while (bfin_read_TIMER_REV_COUNTER() <= 11)
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continue;
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bfin_write_TIMER_ENABLE(TIMEN_LP);
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SSYNC();
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while (bfin_read_TIMER_LP_COUNTER() < 3)
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continue;
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bfin_write_TIMER_ENABLE(TIMEN_SP|TIMEN_SPS|TIMEN_PS_CLS);
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SSYNC();
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t_conf_done = 1;
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local_irq_restore(flags);
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}
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static void config_timers(void)
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{
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/* Stop timers */
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bfin_write_TIMER_DISABLE(TIMDIS_SP|TIMDIS_SPS|TIMDIS_REV|
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TIMDIS_LP|TIMDIS_PS_CLS);
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SSYNC();
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/* LP, timer 6 */
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bfin_write_TIMER_LP_CONFIG(TIMER_CONFIG|PULSE_HI);
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bfin_write_TIMER_LP_WIDTH(1);
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bfin_write_TIMER_LP_PERIOD(DCLKS_PER_LINE);
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SSYNC();
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/* SPS, timer 1 */
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bfin_write_TIMER_SPS_CONFIG(TIMER_CONFIG|PULSE_HI);
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bfin_write_TIMER_SPS_WIDTH(DCLKS_PER_LINE*2);
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bfin_write_TIMER_SPS_PERIOD((DCLKS_PER_LINE * (LCD_Y_RES+U_LINES)));
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SSYNC();
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/* SP, timer 0 */
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bfin_write_TIMER_SP_CONFIG(TIMER_CONFIG|PULSE_HI);
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bfin_write_TIMER_SP_WIDTH(1);
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bfin_write_TIMER_SP_PERIOD(DCLKS_PER_LINE);
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SSYNC();
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/* PS & CLS, timer 7 */
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bfin_write_TIMER_PS_CLS_CONFIG(TIMER_CONFIG);
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bfin_write_TIMER_PS_CLS_WIDTH(LCD_X_RES + START_LINES);
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bfin_write_TIMER_PS_CLS_PERIOD(DCLKS_PER_LINE);
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SSYNC();
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#ifdef NO_BL
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/* REV, timer 5 */
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bfin_write_TIMER_REV_CONFIG(TIMER_CONFIG|PULSE_HI);
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bfin_write_TIMER_REV_WIDTH(DCLKS_PER_LINE);
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bfin_write_TIMER_REV_PERIOD(DCLKS_PER_LINE*2);
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SSYNC();
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#endif
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}
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static void config_ppi(void)
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{
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bfin_write_PPI_DELAY(PPI_DELAY_VALUE);
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bfin_write_PPI_COUNT(LCD_X_RES-1);
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/* 0x10 -> PORT_CFG -> 2 or 3 frame syncs */
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bfin_write_PPI_CONTROL((PPI_CONFIG_VALUE|0x10) & (~POLS));
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}
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static int config_dma(void)
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{
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u32 i;
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if (landscape) {
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for (i = 0; i < U_LINES; ++i) {
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/* blanking lines point to first line of fb_buffer */
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dma_desc_table[2*i] = (unsigned long)&dma_desc_table[2*i+2];
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dma_desc_table[2*i+1] = (unsigned long)fb_buffer;
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}
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for (i = U_LINES; i < U_LINES + LCD_Y_RES; ++i) {
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/* visible lines */
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dma_desc_table[2*i] = (unsigned long)&dma_desc_table[2*i+2];
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dma_desc_table[2*i+1] = (unsigned long)fb_buffer +
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(LCD_Y_RES+U_LINES-1-i)*2;
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}
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/* last descriptor points to first */
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dma_desc_table[2*(LCD_Y_RES+U_LINES-1)] = (unsigned long)&dma_desc_table[0];
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set_dma_x_count(CH_PPI, LCD_X_RES);
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set_dma_x_modify(CH_PPI, LCD_Y_RES * (LCD_BBP / 8));
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set_dma_y_count(CH_PPI, 0);
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set_dma_y_modify(CH_PPI, 0);
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set_dma_next_desc_addr(CH_PPI, (void *)dma_desc_table[0]);
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set_dma_config(CH_PPI, DMAFLOW_LARGE | NDSIZE_4 | WDSIZE_16);
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} else {
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set_dma_config(CH_PPI, set_bfin_dma_config(DIR_READ,
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DMA_FLOW_AUTO,
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INTR_DISABLE,
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DIMENSION_2D,
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DATA_SIZE_16,
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DMA_NOSYNC_KEEP_DMA_BUF));
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set_dma_x_count(CH_PPI, LCD_X_RES);
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set_dma_x_modify(CH_PPI, LCD_BBP / 8);
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set_dma_y_count(CH_PPI, LCD_Y_RES+U_LINES);
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set_dma_y_modify(CH_PPI, LCD_BBP / 8);
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set_dma_start_addr(CH_PPI, (unsigned long) fb_buffer);
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}
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return 0;
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}
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static int __devinit request_ports(void)
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{
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u16 tmr_req[] = TIMERS;
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/*
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UD: PF13
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MOD: PF10
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LBR: PF14
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||||
PPI_CLK: PF15
|
||||
*/
|
||||
|
||||
if (peripheral_request_list(ppi_pins, KBUILD_MODNAME)) {
|
||||
pr_err("requesting PPI peripheral failed\n");
|
||||
return -EBUSY;
|
||||
}
|
||||
|
||||
if (peripheral_request_list(tmr_req, KBUILD_MODNAME)) {
|
||||
peripheral_free_list(ppi_pins);
|
||||
pr_err("requesting timer peripheral failed\n");
|
||||
return -EBUSY;
|
||||
}
|
||||
|
||||
#if (defined(UD) && defined(LBR))
|
||||
if (gpio_request(UD, KBUILD_MODNAME)) {
|
||||
pr_err("requesting GPIO %d failed\n", UD);
|
||||
return -EBUSY;
|
||||
}
|
||||
|
||||
if (gpio_request(LBR, KBUILD_MODNAME)) {
|
||||
pr_err("requesting GPIO %d failed\n", LBR);
|
||||
gpio_free(UD);
|
||||
return -EBUSY;
|
||||
}
|
||||
|
||||
gpio_direction_output(UD, 0);
|
||||
gpio_direction_output(LBR, 1);
|
||||
|
||||
#endif
|
||||
|
||||
if (gpio_request(MOD, KBUILD_MODNAME)) {
|
||||
pr_err("requesting GPIO %d failed\n", MOD);
|
||||
#if (defined(UD) && defined(LBR))
|
||||
gpio_free(LBR);
|
||||
gpio_free(UD);
|
||||
#endif
|
||||
return -EBUSY;
|
||||
}
|
||||
|
||||
gpio_direction_output(MOD, 1);
|
||||
|
||||
SSYNC();
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void free_ports(void)
|
||||
{
|
||||
u16 tmr_req[] = TIMERS;
|
||||
|
||||
peripheral_free_list(ppi_pins);
|
||||
peripheral_free_list(tmr_req);
|
||||
|
||||
#if defined(UD) && defined(LBR)
|
||||
gpio_free(LBR);
|
||||
gpio_free(UD);
|
||||
#endif
|
||||
gpio_free(MOD);
|
||||
}
|
||||
|
||||
static struct fb_info bfin_lq035_fb;
|
||||
|
||||
static struct fb_var_screeninfo bfin_lq035_fb_defined = {
|
||||
.bits_per_pixel = LCD_BBP,
|
||||
.activate = FB_ACTIVATE_TEST,
|
||||
.xres = LCD_X_RES, /*default portrait mode RGB*/
|
||||
.yres = LCD_Y_RES,
|
||||
.xres_virtual = LCD_X_RES,
|
||||
.yres_virtual = LCD_Y_RES,
|
||||
.height = -1,
|
||||
.width = -1,
|
||||
.left_margin = 0,
|
||||
.right_margin = 0,
|
||||
.upper_margin = 0,
|
||||
.lower_margin = 0,
|
||||
.red = {11, 5, 0},
|
||||
.green = {5, 6, 0},
|
||||
.blue = {0, 5, 0},
|
||||
.transp = {0, 0, 0},
|
||||
};
|
||||
|
||||
static struct fb_fix_screeninfo bfin_lq035_fb_fix __devinitdata = {
|
||||
.id = KBUILD_MODNAME,
|
||||
.smem_len = ACTIVE_VIDEO_MEM_SIZE,
|
||||
.type = FB_TYPE_PACKED_PIXELS,
|
||||
.visual = FB_VISUAL_TRUECOLOR,
|
||||
.xpanstep = 0,
|
||||
.ypanstep = 0,
|
||||
.line_length = LCD_X_RES*(LCD_BBP/8),
|
||||
.accel = FB_ACCEL_NONE,
|
||||
};
|
||||
|
||||
|
||||
static int bfin_lq035_fb_open(struct fb_info *info, int user)
|
||||
{
|
||||
unsigned long flags;
|
||||
|
||||
spin_lock_irqsave(&bfin_lq035_lock, flags);
|
||||
lq035_open_cnt++;
|
||||
spin_unlock_irqrestore(&bfin_lq035_lock, flags);
|
||||
|
||||
if (lq035_open_cnt <= 1) {
|
||||
bfin_write_PPI_CONTROL(0);
|
||||
SSYNC();
|
||||
|
||||
set_vcomm();
|
||||
config_dma();
|
||||
config_ppi();
|
||||
|
||||
/* start dma */
|
||||
enable_dma(CH_PPI);
|
||||
SSYNC();
|
||||
bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() | PORT_EN);
|
||||
SSYNC();
|
||||
|
||||
if (!t_conf_done) {
|
||||
config_timers();
|
||||
start_timers();
|
||||
}
|
||||
/* gpio_set_value(MOD,1); */
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int bfin_lq035_fb_release(struct fb_info *info, int user)
|
||||
{
|
||||
unsigned long flags;
|
||||
|
||||
spin_lock_irqsave(&bfin_lq035_lock, flags);
|
||||
lq035_open_cnt--;
|
||||
spin_unlock_irqrestore(&bfin_lq035_lock, flags);
|
||||
|
||||
|
||||
if (lq035_open_cnt <= 0) {
|
||||
|
||||
bfin_write_PPI_CONTROL(0);
|
||||
SSYNC();
|
||||
|
||||
disable_dma(CH_PPI);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static int bfin_lq035_fb_check_var(struct fb_var_screeninfo *var,
|
||||
struct fb_info *info)
|
||||
{
|
||||
switch (var->bits_per_pixel) {
|
||||
case 16:/* DIRECTCOLOUR, 64k */
|
||||
var->red.offset = info->var.red.offset;
|
||||
var->green.offset = info->var.green.offset;
|
||||
var->blue.offset = info->var.blue.offset;
|
||||
var->red.length = info->var.red.length;
|
||||
var->green.length = info->var.green.length;
|
||||
var->blue.length = info->var.blue.length;
|
||||
var->transp.offset = 0;
|
||||
var->transp.length = 0;
|
||||
var->transp.msb_right = 0;
|
||||
var->red.msb_right = 0;
|
||||
var->green.msb_right = 0;
|
||||
var->blue.msb_right = 0;
|
||||
break;
|
||||
default:
|
||||
pr_debug("%s: depth not supported: %u BPP\n", __func__,
|
||||
var->bits_per_pixel);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (info->var.xres != var->xres ||
|
||||
info->var.yres != var->yres ||
|
||||
info->var.xres_virtual != var->xres_virtual ||
|
||||
info->var.yres_virtual != var->yres_virtual) {
|
||||
pr_debug("%s: Resolution not supported: X%u x Y%u\n",
|
||||
__func__, var->xres, var->yres);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/*
|
||||
* Memory limit
|
||||
*/
|
||||
|
||||
if ((info->fix.line_length * var->yres_virtual) > info->fix.smem_len) {
|
||||
pr_debug("%s: Memory Limit requested yres_virtual = %u\n",
|
||||
__func__, var->yres_virtual);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* fb_rotate
|
||||
* Rotate the display of this angle. This doesn't seems to be used by the core,
|
||||
* but as our hardware supports it, so why not implementing it...
|
||||
*/
|
||||
static void bfin_lq035_fb_rotate(struct fb_info *fbi, int angle)
|
||||
{
|
||||
pr_debug("%s: %p %d", __func__, fbi, angle);
|
||||
#if (defined(UD) && defined(LBR))
|
||||
switch (angle) {
|
||||
|
||||
case 180:
|
||||
gpio_set_value(LBR, 0);
|
||||
gpio_set_value(UD, 1);
|
||||
break;
|
||||
default:
|
||||
gpio_set_value(LBR, 1);
|
||||
gpio_set_value(UD, 0);
|
||||
break;
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
static int bfin_lq035_fb_cursor(struct fb_info *info, struct fb_cursor *cursor)
|
||||
{
|
||||
if (nocursor)
|
||||
return 0;
|
||||
else
|
||||
return -EINVAL; /* just to force soft_cursor() call */
|
||||
}
|
||||
|
||||
static int bfin_lq035_fb_setcolreg(u_int regno, u_int red, u_int green,
|
||||
u_int blue, u_int transp,
|
||||
struct fb_info *info)
|
||||
{
|
||||
if (regno >= NBR_PALETTE)
|
||||
return -EINVAL;
|
||||
|
||||
if (info->var.grayscale)
|
||||
/* grayscale = 0.30*R + 0.59*G + 0.11*B */
|
||||
red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
|
||||
|
||||
if (info->fix.visual == FB_VISUAL_TRUECOLOR) {
|
||||
|
||||
u32 value;
|
||||
/* Place color in the pseudopalette */
|
||||
if (regno > 16)
|
||||
return -EINVAL;
|
||||
|
||||
red >>= (16 - info->var.red.length);
|
||||
green >>= (16 - info->var.green.length);
|
||||
blue >>= (16 - info->var.blue.length);
|
||||
|
||||
value = (red << info->var.red.offset) |
|
||||
(green << info->var.green.offset)|
|
||||
(blue << info->var.blue.offset);
|
||||
value &= 0xFFFF;
|
||||
|
||||
((u32 *) (info->pseudo_palette))[regno] = value;
|
||||
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct fb_ops bfin_lq035_fb_ops = {
|
||||
.owner = THIS_MODULE,
|
||||
.fb_open = bfin_lq035_fb_open,
|
||||
.fb_release = bfin_lq035_fb_release,
|
||||
.fb_check_var = bfin_lq035_fb_check_var,
|
||||
.fb_rotate = bfin_lq035_fb_rotate,
|
||||
.fb_fillrect = cfb_fillrect,
|
||||
.fb_copyarea = cfb_copyarea,
|
||||
.fb_imageblit = cfb_imageblit,
|
||||
.fb_cursor = bfin_lq035_fb_cursor,
|
||||
.fb_setcolreg = bfin_lq035_fb_setcolreg,
|
||||
};
|
||||
|
||||
static int bl_get_brightness(struct backlight_device *bd)
|
||||
{
|
||||
return current_brightness;
|
||||
}
|
||||
|
||||
static const struct backlight_ops bfin_lq035fb_bl_ops = {
|
||||
.get_brightness = bl_get_brightness,
|
||||
};
|
||||
|
||||
static struct backlight_device *bl_dev;
|
||||
|
||||
static int bfin_lcd_get_power(struct lcd_device *dev)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int bfin_lcd_set_power(struct lcd_device *dev, int power)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int bfin_lcd_get_contrast(struct lcd_device *dev)
|
||||
{
|
||||
return (int)vcomm_value;
|
||||
}
|
||||
|
||||
static int bfin_lcd_set_contrast(struct lcd_device *dev, int contrast)
|
||||
{
|
||||
if (contrast > 255)
|
||||
contrast = 255;
|
||||
if (contrast < 0)
|
||||
contrast = 0;
|
||||
|
||||
vcomm_value = (unsigned char)contrast;
|
||||
set_vcomm();
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int bfin_lcd_check_fb(struct lcd_device *lcd, struct fb_info *fi)
|
||||
{
|
||||
if (!fi || (fi == &bfin_lq035_fb))
|
||||
return 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct lcd_ops bfin_lcd_ops = {
|
||||
.get_power = bfin_lcd_get_power,
|
||||
.set_power = bfin_lcd_set_power,
|
||||
.get_contrast = bfin_lcd_get_contrast,
|
||||
.set_contrast = bfin_lcd_set_contrast,
|
||||
.check_fb = bfin_lcd_check_fb,
|
||||
};
|
||||
|
||||
static struct lcd_device *lcd_dev;
|
||||
|
||||
static int __devinit bfin_lq035_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct backlight_properties props;
|
||||
dma_addr_t dma_handle;
|
||||
|
||||
if (request_dma(CH_PPI, KBUILD_MODNAME)) {
|
||||
pr_err("couldn't request PPI DMA\n");
|
||||
return -EFAULT;
|
||||
}
|
||||
|
||||
if (request_ports()) {
|
||||
pr_err("couldn't request gpio port\n");
|
||||
free_dma(CH_PPI);
|
||||
return -EFAULT;
|
||||
}
|
||||
|
||||
fb_buffer = dma_alloc_coherent(NULL, TOTAL_VIDEO_MEM_SIZE,
|
||||
&dma_handle, GFP_KERNEL);
|
||||
if (fb_buffer == NULL) {
|
||||
pr_err("couldn't allocate dma buffer\n");
|
||||
free_dma(CH_PPI);
|
||||
free_ports();
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
if (L1_DATA_A_LENGTH)
|
||||
dma_desc_table = l1_data_sram_zalloc(TOTAL_DMA_DESC_SIZE);
|
||||
else
|
||||
dma_desc_table = dma_alloc_coherent(NULL, TOTAL_DMA_DESC_SIZE,
|
||||
&dma_handle, 0);
|
||||
|
||||
if (dma_desc_table == NULL) {
|
||||
pr_err("couldn't allocate dma descriptor\n");
|
||||
free_dma(CH_PPI);
|
||||
free_ports();
|
||||
dma_free_coherent(NULL, TOTAL_VIDEO_MEM_SIZE, fb_buffer, 0);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
bfin_lq035_fb.screen_base = (void *)fb_buffer;
|
||||
bfin_lq035_fb_fix.smem_start = (int)fb_buffer;
|
||||
if (landscape) {
|
||||
bfin_lq035_fb_defined.xres = LCD_Y_RES;
|
||||
bfin_lq035_fb_defined.yres = LCD_X_RES;
|
||||
bfin_lq035_fb_defined.xres_virtual = LCD_Y_RES;
|
||||
bfin_lq035_fb_defined.yres_virtual = LCD_X_RES;
|
||||
|
||||
bfin_lq035_fb_fix.line_length = LCD_Y_RES*(LCD_BBP/8);
|
||||
} else {
|
||||
bfin_lq035_fb.screen_base += ACTIVE_VIDEO_MEM_OFFSET;
|
||||
bfin_lq035_fb_fix.smem_start += ACTIVE_VIDEO_MEM_OFFSET;
|
||||
}
|
||||
|
||||
bfin_lq035_fb_defined.green.msb_right = 0;
|
||||
bfin_lq035_fb_defined.red.msb_right = 0;
|
||||
bfin_lq035_fb_defined.blue.msb_right = 0;
|
||||
bfin_lq035_fb_defined.green.offset = 5;
|
||||
bfin_lq035_fb_defined.green.length = 6;
|
||||
bfin_lq035_fb_defined.red.length = 5;
|
||||
bfin_lq035_fb_defined.blue.length = 5;
|
||||
|
||||
if (bgr) {
|
||||
bfin_lq035_fb_defined.red.offset = 0;
|
||||
bfin_lq035_fb_defined.blue.offset = 11;
|
||||
} else {
|
||||
bfin_lq035_fb_defined.red.offset = 11;
|
||||
bfin_lq035_fb_defined.blue.offset = 0;
|
||||
}
|
||||
|
||||
bfin_lq035_fb.fbops = &bfin_lq035_fb_ops;
|
||||
bfin_lq035_fb.var = bfin_lq035_fb_defined;
|
||||
|
||||
bfin_lq035_fb.fix = bfin_lq035_fb_fix;
|
||||
bfin_lq035_fb.flags = FBINFO_DEFAULT;
|
||||
|
||||
|
||||
bfin_lq035_fb.pseudo_palette = kzalloc(sizeof(u32) * 16, GFP_KERNEL);
|
||||
if (bfin_lq035_fb.pseudo_palette == NULL) {
|
||||
pr_err("failed to allocate pseudo_palette\n");
|
||||
free_dma(CH_PPI);
|
||||
free_ports();
|
||||
dma_free_coherent(NULL, TOTAL_VIDEO_MEM_SIZE, fb_buffer, 0);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
if (fb_alloc_cmap(&bfin_lq035_fb.cmap, NBR_PALETTE, 0) < 0) {
|
||||
pr_err("failed to allocate colormap (%d entries)\n",
|
||||
NBR_PALETTE);
|
||||
free_dma(CH_PPI);
|
||||
free_ports();
|
||||
dma_free_coherent(NULL, TOTAL_VIDEO_MEM_SIZE, fb_buffer, 0);
|
||||
kfree(bfin_lq035_fb.pseudo_palette);
|
||||
return -EFAULT;
|
||||
}
|
||||
|
||||
if (register_framebuffer(&bfin_lq035_fb) < 0) {
|
||||
pr_err("unable to register framebuffer\n");
|
||||
free_dma(CH_PPI);
|
||||
free_ports();
|
||||
dma_free_coherent(NULL, TOTAL_VIDEO_MEM_SIZE, fb_buffer, 0);
|
||||
fb_buffer = NULL;
|
||||
kfree(bfin_lq035_fb.pseudo_palette);
|
||||
fb_dealloc_cmap(&bfin_lq035_fb.cmap);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
i2c_add_driver(&ad5280_driver);
|
||||
|
||||
memset(&props, 0, sizeof(props));
|
||||
props.max_brightness = MAX_BRIGHENESS;
|
||||
bl_dev = backlight_device_register("bf537-bl", NULL, NULL,
|
||||
&bfin_lq035fb_bl_ops, &props);
|
||||
|
||||
lcd_dev = lcd_device_register(KBUILD_MODNAME, &pdev->dev, NULL,
|
||||
&bfin_lcd_ops);
|
||||
lcd_dev->props.max_contrast = 255,
|
||||
|
||||
pr_info("initialized");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __devexit bfin_lq035_remove(struct platform_device *pdev)
|
||||
{
|
||||
if (fb_buffer != NULL)
|
||||
dma_free_coherent(NULL, TOTAL_VIDEO_MEM_SIZE, fb_buffer, 0);
|
||||
|
||||
if (L1_DATA_A_LENGTH)
|
||||
l1_data_sram_free(dma_desc_table);
|
||||
else
|
||||
dma_free_coherent(NULL, TOTAL_DMA_DESC_SIZE, NULL, 0);
|
||||
|
||||
bfin_write_TIMER_DISABLE(TIMEN_SP|TIMEN_SPS|TIMEN_PS_CLS|
|
||||
TIMEN_LP|TIMEN_REV);
|
||||
t_conf_done = 0;
|
||||
|
||||
free_dma(CH_PPI);
|
||||
|
||||
|
||||
kfree(bfin_lq035_fb.pseudo_palette);
|
||||
fb_dealloc_cmap(&bfin_lq035_fb.cmap);
|
||||
|
||||
|
||||
lcd_device_unregister(lcd_dev);
|
||||
backlight_device_unregister(bl_dev);
|
||||
|
||||
unregister_framebuffer(&bfin_lq035_fb);
|
||||
i2c_del_driver(&ad5280_driver);
|
||||
|
||||
free_ports();
|
||||
|
||||
pr_info("unregistered LCD driver\n");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_PM
|
||||
static int bfin_lq035_suspend(struct platform_device *pdev, pm_message_t state)
|
||||
{
|
||||
if (lq035_open_cnt > 0) {
|
||||
bfin_write_PPI_CONTROL(0);
|
||||
SSYNC();
|
||||
disable_dma(CH_PPI);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int bfin_lq035_resume(struct platform_device *pdev)
|
||||
{
|
||||
if (lq035_open_cnt > 0) {
|
||||
bfin_write_PPI_CONTROL(0);
|
||||
SSYNC();
|
||||
|
||||
config_dma();
|
||||
config_ppi();
|
||||
|
||||
enable_dma(CH_PPI);
|
||||
bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() | PORT_EN);
|
||||
SSYNC();
|
||||
|
||||
config_timers();
|
||||
start_timers();
|
||||
} else {
|
||||
t_conf_done = 0;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
#else
|
||||
# define bfin_lq035_suspend NULL
|
||||
# define bfin_lq035_resume NULL
|
||||
#endif
|
||||
|
||||
static struct platform_driver bfin_lq035_driver = {
|
||||
.probe = bfin_lq035_probe,
|
||||
.remove = __devexit_p(bfin_lq035_remove),
|
||||
.suspend = bfin_lq035_suspend,
|
||||
.resume = bfin_lq035_resume,
|
||||
.driver = {
|
||||
.name = KBUILD_MODNAME,
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
};
|
||||
|
||||
static int __init bfin_lq035_driver_init(void)
|
||||
{
|
||||
request_module("i2c-bfin-twi");
|
||||
return platform_driver_register(&bfin_lq035_driver);
|
||||
}
|
||||
module_init(bfin_lq035_driver_init);
|
||||
|
||||
static void __exit bfin_lq035_driver_cleanup(void)
|
||||
{
|
||||
platform_driver_unregister(&bfin_lq035_driver);
|
||||
}
|
||||
module_exit(bfin_lq035_driver_cleanup);
|
||||
|
||||
MODULE_DESCRIPTION("SHARP LQ035Q7DB03 TFT LCD Driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
Loading…
Reference in New Issue
Block a user