diff options
Diffstat (limited to 'drivers/mxc/ipu3/ipu_ic.c')
-rw-r--r-- | drivers/mxc/ipu3/ipu_ic.c | 550 |
1 files changed, 550 insertions, 0 deletions
diff --git a/drivers/mxc/ipu3/ipu_ic.c b/drivers/mxc/ipu3/ipu_ic.c new file mode 100644 index 000000000000..197f98e2c63f --- /dev/null +++ b/drivers/mxc/ipu3/ipu_ic.c @@ -0,0 +1,550 @@ +/* + * Copyright 2005-2008 Freescale Semiconductor, Inc. All Rights Reserved. + */ + +/* + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +/* + * @file ipu_ic.c + * + * @brief IPU IC functions + * + * @ingroup IPU + */ +#include <linux/types.h> +#include <linux/init.h> +#include <linux/errno.h> +#include <linux/spinlock.h> +#include <asm/io.h> +#include <asm/arch/ipu.h> + +#include "ipu_prv.h" +#include "ipu_regs.h" +#include "ipu_param_mem.h" + +enum { + IC_TASK_VIEWFINDER, + IC_TASK_ENCODER, + IC_TASK_POST_PROCESSOR +}; + +static void _init_csc(uint8_t ic_task, ipu_color_space_t in_format, + ipu_color_space_t out_format); +static bool _calc_resize_coeffs(uint32_t inSize, uint32_t outSize, + uint32_t *resizeCoeff, + uint32_t *downsizeCoeff); + +void _ipu_ic_enable_task(ipu_channel_t channel) +{ + uint32_t ic_conf; + + ic_conf = __raw_readl(IC_CONF); + switch (channel) { + case MEM_PRP_VF_MEM: + ic_conf |= IC_CONF_PRPVF_EN; + break; + case MEM_ROT_VF_MEM: + ic_conf |= IC_CONF_PRPVF_ROT_EN; + break; + case MEM_PRP_ENC_MEM: + ic_conf |= IC_CONF_PRPENC_EN; + break; + case MEM_ROT_ENC_MEM: + ic_conf |= IC_CONF_PRPENC_ROT_EN; + break; + case MEM_PP_MEM: + ic_conf |= IC_CONF_PP_EN; + break; + case MEM_ROT_PP_MEM: + ic_conf |= IC_CONF_PP_ROT_EN; + break; + default: + break; + } + __raw_writel(ic_conf, IC_CONF); +} + +void _ipu_ic_disable_task(ipu_channel_t channel) +{ + uint32_t ic_conf; + + ic_conf = __raw_readl(IC_CONF); + switch (channel) { + case MEM_PRP_VF_MEM: + ic_conf &= ~IC_CONF_PRPVF_EN; + break; + case MEM_ROT_VF_MEM: + ic_conf &= ~IC_CONF_PRPVF_ROT_EN; + break; + case MEM_PRP_ENC_MEM: + ic_conf &= ~IC_CONF_PRPENC_EN; + break; + case MEM_ROT_ENC_MEM: + ic_conf &= ~IC_CONF_PRPENC_ROT_EN; + break; + case MEM_PP_MEM: + ic_conf &= ~IC_CONF_PP_EN; + break; + case MEM_ROT_PP_MEM: + ic_conf &= ~IC_CONF_PP_ROT_EN; + break; + default: + break; + } + __raw_writel(ic_conf, IC_CONF); +} + +void _ipu_ic_init_prpvf(ipu_channel_params_t *params, bool src_is_csi) +{ + uint32_t reg, ic_conf; + uint32_t downsizeCoeff, resizeCoeff; + ipu_color_space_t in_fmt, out_fmt; + + /* Setup vertical resizing */ + _calc_resize_coeffs(params->mem_prp_vf_mem.in_height, + params->mem_prp_vf_mem.out_height, + &resizeCoeff, &downsizeCoeff); + reg = (downsizeCoeff << 30) | (resizeCoeff << 16); + + /* Setup horizontal resizing */ + _calc_resize_coeffs(params->mem_prp_vf_mem.in_width, + params->mem_prp_vf_mem.out_width, + &resizeCoeff, &downsizeCoeff); + reg |= (downsizeCoeff << 14) | resizeCoeff; + + __raw_writel(reg, IC_PRP_VF_RSC); + + ic_conf = __raw_readl(IC_CONF); + + /* Setup color space conversion */ + in_fmt = format_to_colorspace(params->mem_prp_vf_mem.in_pixel_fmt); + out_fmt = format_to_colorspace(params->mem_prp_vf_mem.out_pixel_fmt); + if (in_fmt == RGB) { + if ((out_fmt == YCbCr) || (out_fmt == YUV)) { + /* Enable RGB->YCBCR CSC */ + _init_csc(IC_TASK_VIEWFINDER, RGB, out_fmt); + ic_conf |= IC_CONF_PRPVF_CSC1; + } + } + if ((in_fmt == YCbCr) || (in_fmt == YUV)) { + if (out_fmt == RGB) { + /* Enable YCBCR->RGB CSC */ + _init_csc(IC_TASK_VIEWFINDER, YCbCr, RGB); + ic_conf |= IC_CONF_PRPVF_CSC1; + } else { + /* TODO: Support YUV<->YCbCr conversion? */ + } + } + + if (params->mem_prp_vf_mem.graphics_combine_en) { + ic_conf |= IC_CONF_PRPVF_CMB; + + /* need transparent CSC1 conversion */ + _init_csc(IC_TASK_POST_PROCESSOR, RGB, RGB); + ic_conf |= IC_CONF_PRPVF_CSC1; /* Enable RGB->RGB CSC */ + + if (params->mem_prp_vf_mem.global_alpha_en) + ic_conf |= IC_CONF_IC_GLB_LOC_A; + else + ic_conf &= ~IC_CONF_IC_GLB_LOC_A; + + if (params->mem_prp_vf_mem.key_color_en) + ic_conf |= IC_CONF_KEY_COLOR_EN; + else + ic_conf &= ~IC_CONF_KEY_COLOR_EN; + } else { + ic_conf &= ~IC_CONF_PP_CMB; + } + + __raw_writel(ic_conf, IC_CONF); +} + +void _ipu_ic_uninit_prpvf(void) +{ + uint32_t reg; + + reg = __raw_readl(IC_CONF); + reg &= ~(IC_CONF_PRPVF_EN | IC_CONF_PRPVF_CMB | + IC_CONF_PRPVF_CSC2 | IC_CONF_PRPVF_CSC1); + __raw_writel(reg, IC_CONF); +} + +void _ipu_ic_init_rotate_vf(ipu_channel_params_t *params) +{ +} + +void _ipu_ic_uninit_rotate_vf(void) +{ + uint32_t reg; + reg = __raw_readl(IC_CONF); + reg &= ~IC_CONF_PRPVF_ROT_EN; + __raw_writel(reg, IC_CONF); +} + +void _ipu_ic_init_prpenc(ipu_channel_params_t *params, bool src_is_csi) +{ + uint32_t reg, ic_conf; + uint32_t downsizeCoeff, resizeCoeff; + ipu_color_space_t in_fmt, out_fmt; + + /* Setup vertical resizing */ + _calc_resize_coeffs(params->mem_prp_enc_mem.in_height, + params->mem_prp_enc_mem.out_height, + &resizeCoeff, &downsizeCoeff); + reg = (downsizeCoeff << 30) | (resizeCoeff << 16); + + /* Setup horizontal resizing */ + _calc_resize_coeffs(params->mem_prp_enc_mem.in_width, + params->mem_prp_enc_mem.out_width, + &resizeCoeff, &downsizeCoeff); + reg |= (downsizeCoeff << 14) | resizeCoeff; + + __raw_writel(reg, IC_PRP_ENC_RSC); + + ic_conf = __raw_readl(IC_CONF); + + /* Setup color space conversion */ + in_fmt = format_to_colorspace(params->mem_prp_enc_mem.in_pixel_fmt); + out_fmt = format_to_colorspace(params->mem_prp_enc_mem.out_pixel_fmt); + if (in_fmt == RGB) { + if ((out_fmt == YCbCr) || (out_fmt == YUV)) { + /* Enable RGB->YCBCR CSC */ + _init_csc(IC_TASK_ENCODER, RGB, out_fmt); + ic_conf |= IC_CONF_PRPENC_CSC1; + } + } + if ((in_fmt == YCbCr) || (in_fmt == YUV)) { + if (out_fmt == RGB) { + /* Enable YCBCR->RGB CSC */ + _init_csc(IC_TASK_ENCODER, YCbCr, RGB); + ic_conf |= IC_CONF_PRPENC_CSC1; + } else { + /* TODO: Support YUV<->YCbCr conversion? */ + } + } + + if (src_is_csi) + ic_conf &= ~IC_CONF_RWS_EN; + else + ic_conf |= IC_CONF_RWS_EN; + + __raw_writel(ic_conf, IC_CONF); +} + +void _ipu_ic_uninit_prpenc(void) +{ + uint32_t reg; + + reg = __raw_readl(IC_CONF); + reg &= ~(IC_CONF_PRPENC_EN | IC_CONF_PRPENC_CSC1); + __raw_writel(reg, IC_CONF); +} + +void _ipu_ic_init_rotate_enc(ipu_channel_params_t *params) +{ +} + +void _ipu_ic_uninit_rotate_enc(void) +{ + uint32_t reg; + + reg = __raw_readl(IC_CONF); + reg &= ~(IC_CONF_PRPENC_ROT_EN); + __raw_writel(reg, IC_CONF); +} + +void _ipu_ic_init_pp(ipu_channel_params_t *params) +{ + uint32_t reg, ic_conf; + uint32_t downsizeCoeff, resizeCoeff; + ipu_color_space_t in_fmt, out_fmt; + + /* Setup vertical resizing */ + _calc_resize_coeffs(params->mem_pp_mem.in_height, + params->mem_pp_mem.out_height, + &resizeCoeff, &downsizeCoeff); + reg = (downsizeCoeff << 30) | (resizeCoeff << 16); + + /* Setup horizontal resizing */ + _calc_resize_coeffs(params->mem_pp_mem.in_width, + params->mem_pp_mem.out_width, + &resizeCoeff, &downsizeCoeff); + reg |= (downsizeCoeff << 14) | resizeCoeff; + + __raw_writel(reg, IC_PP_RSC); + + ic_conf = __raw_readl(IC_CONF); + + /* Setup color space conversion */ + in_fmt = format_to_colorspace(params->mem_pp_mem.in_pixel_fmt); + out_fmt = format_to_colorspace(params->mem_pp_mem.out_pixel_fmt); + if (in_fmt == RGB) { + if ((out_fmt == YCbCr) || (out_fmt == YUV)) { + /* Enable RGB->YCBCR CSC */ + _init_csc(IC_TASK_POST_PROCESSOR, RGB, out_fmt); + ic_conf |= IC_CONF_PP_CSC2; + } + } + if ((in_fmt == YCbCr) || (in_fmt == YUV)) { + if (out_fmt == RGB) { + /* Enable YCBCR->RGB CSC */ + _init_csc(IC_TASK_POST_PROCESSOR, YCbCr, RGB); + ic_conf |= IC_CONF_PP_CSC1; + } else { + /* TODO: Support YUV<->YCbCr conversion? */ + } + } + + if (params->mem_pp_mem.graphics_combine_en) { + ic_conf |= IC_CONF_PP_CMB; + + /* need transparent CSC1 conversion */ + _init_csc(IC_TASK_POST_PROCESSOR, RGB, RGB); + ic_conf |= IC_CONF_PP_CSC1; /* Enable RGB->RGB CSC */ + + if (params->mem_pp_mem.global_alpha_en) + ic_conf |= IC_CONF_IC_GLB_LOC_A; + else + ic_conf &= ~IC_CONF_IC_GLB_LOC_A; + + if (params->mem_pp_mem.key_color_en) + ic_conf |= IC_CONF_KEY_COLOR_EN; + else + ic_conf &= ~IC_CONF_KEY_COLOR_EN; + } else { + ic_conf &= ~IC_CONF_PP_CMB; + } + + __raw_writel(ic_conf, IC_CONF); +} + +void _ipu_ic_uninit_pp(void) +{ + uint32_t reg; + + reg = __raw_readl(IC_CONF); + reg &= ~(IC_CONF_PP_EN | IC_CONF_PP_CSC1 | IC_CONF_PP_CSC2 | + IC_CONF_PP_CMB); + __raw_writel(reg, IC_CONF); +} + +void _ipu_ic_init_rotate_pp(ipu_channel_params_t *params) +{ +} + +void _ipu_ic_uninit_rotate_pp(void) +{ + uint32_t reg; + reg = __raw_readl(IC_CONF); + reg &= ~IC_CONF_PP_ROT_EN; + __raw_writel(reg, IC_CONF); +} + +int _ipu_ic_idma_init(int dma_chan, uint16_t width, uint16_t height, + int burst_size, ipu_rotate_mode_t rot) +{ + u32 ic_idmac_1, ic_idmac_2, ic_idmac_3; + u32 temp_rot = bitrev8(rot) >> 5; + + if ((burst_size != 8) && (burst_size != 16)) { + dev_dbg(g_ipu_dev, "Illegal burst length for IC\n"); + return -EINVAL; + } + + width--; + height--; + + ic_idmac_1 = __raw_readl(IC_IDMAC_1); + ic_idmac_2 = __raw_readl(IC_IDMAC_2); + ic_idmac_3 = __raw_readl(IC_IDMAC_3); + if (dma_chan == 22) { /* PP output - CB2 */ + if (burst_size == 16) + ic_idmac_1 |= IC_IDMAC_1_CB2_BURST_16; + else + ic_idmac_1 &= ~IC_IDMAC_1_CB2_BURST_16; + + ic_idmac_2 &= ~IC_IDMAC_2_PP_HEIGHT_MASK; + ic_idmac_2 |= height << IC_IDMAC_2_PP_HEIGHT_OFFSET; + + ic_idmac_3 &= ~IC_IDMAC_3_PP_WIDTH_MASK; + ic_idmac_3 |= width << IC_IDMAC_3_PP_WIDTH_OFFSET; + + } else if (dma_chan == 11) { /* PP Input - CB5 */ + if (burst_size == 16) + ic_idmac_1 |= IC_IDMAC_1_CB5_BURST_16; + else + ic_idmac_1 &= ~IC_IDMAC_1_CB5_BURST_16; + } else if (dma_chan == 47) { /* PP Rot input */ + ic_idmac_1 &= ~IC_IDMAC_1_PP_ROT_MASK; + ic_idmac_1 |= temp_rot << IC_IDMAC_1_PP_ROT_OFFSET; + } + __raw_writel(ic_idmac_1, IC_IDMAC_1); + __raw_writel(ic_idmac_2, IC_IDMAC_2); + __raw_writel(ic_idmac_3, IC_IDMAC_3); + + return 0; +} + +static void _init_csc(uint8_t ic_task, ipu_color_space_t in_format, + ipu_color_space_t out_format) +{ + +/* Y = R * .299 + G * .587 + B * .114; + U = R * -.169 + G * -.332 + B * .500 + 128.; + V = R * .500 + G * -.419 + B * -.0813 + 128.;*/ + static const uint32_t rgb2ycbcr_coeff[4][3] = { + {0x004D, 0x0096, 0x001D}, + {0x01D5, 0x01AB, 0x0080}, + {0x0080, 0x0195, 0x01EB}, + {0x0000, 0x0200, 0x0200}, /* A0, A1, A2 */ + }; + + /* transparent RGB->RGB matrix for combining + */ + static const uint32_t rgb2rgb_coeff[4][3] = { + {0x0080, 0x0000, 0x0000}, + {0x0000, 0x0080, 0x0000}, + {0x0000, 0x0000, 0x0080}, + {0x0000, 0x0000, 0x0000}, /* A0, A1, A2 */ + }; + +/* R = (1.164 * (Y - 16)) + (1.596 * (Cr - 128)); + G = (1.164 * (Y - 16)) - (0.392 * (Cb - 128)) - (0.813 * (Cr - 128)); + B = (1.164 * (Y - 16)) + (2.017 * (Cb - 128); */ + static const uint32_t ycbcr2rgb_coeff[4][3] = { + {149, 0, 204}, + {149, 462, 408}, + {149, 255, 0}, + {8192 - 446, 266, 8192 - 554}, /* A0, A1, A2 */ + }; + + uint32_t param; + uint32_t *base = NULL; + + if (ic_task == IC_TASK_VIEWFINDER) { + base = ipu_tpmem_base + 0x2008 / 4; + } else if (ic_task == IC_TASK_ENCODER) { + base = ipu_tpmem_base + 0x4028 / 4; + } else if (ic_task == IC_TASK_POST_PROCESSOR) { + base = ipu_tpmem_base + 0x6060 / 4; + } else { + BUG(); + } + + if ((in_format == YCbCr) && (out_format == RGB)) { + /* Init CSC1 (YCbCr->RGB) */ + param = (ycbcr2rgb_coeff[3][0] << 27) | + (ycbcr2rgb_coeff[0][0] << 18) | + (ycbcr2rgb_coeff[1][1] << 9) | ycbcr2rgb_coeff[2][2]; + __raw_writel(param, base++); + /* scale = 2, sat = 0 */ + param = (ycbcr2rgb_coeff[3][0] >> 5) | (2L << (40 - 32)); + __raw_writel(param, base++); + + param = (ycbcr2rgb_coeff[3][1] << 27) | + (ycbcr2rgb_coeff[0][1] << 18) | + (ycbcr2rgb_coeff[1][0] << 9) | ycbcr2rgb_coeff[2][0]; + __raw_writel(param, base++); + param = (ycbcr2rgb_coeff[3][1] >> 5); + __raw_writel(param, base++); + + param = (ycbcr2rgb_coeff[3][2] << 27) | + (ycbcr2rgb_coeff[0][2] << 18) | + (ycbcr2rgb_coeff[1][2] << 9) | ycbcr2rgb_coeff[2][1]; + __raw_writel(param, base++); + param = (ycbcr2rgb_coeff[3][2] >> 5); + __raw_writel(param, base++); + } else if ((in_format == RGB) && (out_format == YCbCr)) { + /* Init CSC1 (RGB->YCbCr) */ + param = (rgb2ycbcr_coeff[3][0] << 27) | + (rgb2ycbcr_coeff[0][0] << 18) | + (rgb2ycbcr_coeff[1][1] << 9) | rgb2ycbcr_coeff[2][2]; + __raw_writel(param, base++); + /* scale = 1, sat = 0 */ + param = (rgb2ycbcr_coeff[3][0] >> 5) | (1UL << 8); + __raw_writel(param, base++); + + param = (rgb2ycbcr_coeff[3][1] << 27) | + (rgb2ycbcr_coeff[0][1] << 18) | + (rgb2ycbcr_coeff[1][0] << 9) | rgb2ycbcr_coeff[2][0]; + __raw_writel(param, base++); + param = (rgb2ycbcr_coeff[3][1] >> 5); + __raw_writel(param, base++); + + param = (rgb2ycbcr_coeff[3][2] << 27) | + (rgb2ycbcr_coeff[0][2] << 18) | + (rgb2ycbcr_coeff[1][2] << 9) | rgb2ycbcr_coeff[2][1]; + __raw_writel(param, base++); + param = (rgb2ycbcr_coeff[3][2] >> 5); + __raw_writel(param, base++); + } else if ((in_format == RGB) && (out_format == RGB)) { + /* Init CSC1 */ + param = + (rgb2rgb_coeff[3][0] << 27) | (rgb2rgb_coeff[0][0] << 18) | + (rgb2rgb_coeff[1][1] << 9) | rgb2rgb_coeff[2][2]; + __raw_writel(param, base++); + /* scale = 2, sat = 0 */ + param = (rgb2rgb_coeff[3][0] >> 5) | (2UL << 8); + __raw_writel(param, base++); + + param = + (rgb2rgb_coeff[3][1] << 27) | (rgb2rgb_coeff[0][1] << 18) | + (rgb2rgb_coeff[1][0] << 9) | rgb2rgb_coeff[2][0]; + __raw_writel(param, base++); + param = (rgb2rgb_coeff[3][1] >> 5); + __raw_writel(param, base++); + + param = + (rgb2rgb_coeff[3][2] << 27) | (rgb2rgb_coeff[0][2] << 18) | + (rgb2rgb_coeff[1][2] << 9) | rgb2rgb_coeff[2][1]; + __raw_writel(param, base++); + param = (rgb2rgb_coeff[3][2] >> 5); + __raw_writel(param, base++); + } else { + dev_err(g_ipu_dev, "Unsupported color space conversion\n"); + } +} + +static bool _calc_resize_coeffs(uint32_t inSize, uint32_t outSize, + uint32_t *resizeCoeff, + uint32_t *downsizeCoeff) +{ + uint32_t tempSize; + uint32_t tempDownsize; + + /* Cannot downsize more than 8:1 */ + if ((outSize << 3) < inSize) + return false; + + /* compute downsizing coefficient */ + tempDownsize = 0; + tempSize = inSize; + while ((tempSize >= outSize * 2) && (tempDownsize < 2)) { + tempSize >>= 1; + tempDownsize++; + } + *downsizeCoeff = tempDownsize; + + /* compute resizing coefficient using the following equation: + resizeCoeff = M*(SI -1)/(SO - 1) + where M = 2^13, SI - input size, SO - output size */ + *resizeCoeff = (8192L * (tempSize - 1)) / (outSize - 1); + if (*resizeCoeff >= 16384L) { + dev_err(g_ipu_dev, "Warning! Overflow on resize coeff.\n"); + *resizeCoeff = 0x3FFF; + } + + dev_dbg(g_ipu_dev, "resizing from %u -> %u pixels, " + "downsize=%u, resize=%u.%lu (reg=%u)\n", inSize, outSize, + *downsizeCoeff, (*resizeCoeff >= 8192L) ? 1 : 0, + ((*resizeCoeff & 0x1FFF) * 10000L) / 8192L, *resizeCoeff); + + return true; +} |